WO1995024593A1 - Vanne de permutation, appareil de combustion a recuperation et echangeur de chaleur de recuperation utilisant ce dispositif - Google Patents
Vanne de permutation, appareil de combustion a recuperation et echangeur de chaleur de recuperation utilisant ce dispositif Download PDFInfo
- Publication number
- WO1995024593A1 WO1995024593A1 PCT/JP1995/000409 JP9500409W WO9524593A1 WO 1995024593 A1 WO1995024593 A1 WO 1995024593A1 JP 9500409 W JP9500409 W JP 9500409W WO 9524593 A1 WO9524593 A1 WO 9524593A1
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- WIPO (PCT)
- Prior art keywords
- valve
- gas
- fixed
- switching
- holes
- Prior art date
Links
- 230000001172 regenerating effect Effects 0.000 title claims description 43
- 238000002485 combustion reaction Methods 0.000 title claims description 38
- 239000000463 material Substances 0.000 claims abstract description 117
- 239000003054 catalyst Substances 0.000 claims abstract description 95
- 238000005192 partition Methods 0.000 claims abstract description 85
- 239000000126 substance Substances 0.000 claims abstract description 39
- 238000005338 heat storage Methods 0.000 claims description 59
- 239000011232 storage material Substances 0.000 claims description 59
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- 238000004891 communication Methods 0.000 claims description 51
- 238000010438 heat treatment Methods 0.000 claims description 31
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- 238000007084 catalytic combustion reaction Methods 0.000 description 16
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- 230000000694 effects Effects 0.000 description 10
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
- F23G7/07—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases in which combustion takes place in the presence of catalytic material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
- F23G7/061—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating
- F23G7/065—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel
- F23G7/066—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel preheating the waste gas by the heat of the combustion, e.g. recuperation type incinerator
- F23G7/068—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel preheating the waste gas by the heat of the combustion, e.g. recuperation type incinerator using regenerative heat recovery means
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/86493—Multi-way valve unit
- Y10T137/86863—Rotary valve unit
Definitions
- the present invention relates to a switching valve that switches and guides a fluid, for example, a gas, a regenerative combustion device using the switching valve, an operation method thereof, and a regenerative heat exchanger using the switching valve.
- FIG. 22 The prior art in which this fuel amount is reduced and the recovery efficiency is greatly improved is shown in Figure 22.
- First, second, and third towers 1, 2, and 3 filled with mature materials such as ceramics are provided, and at the top of each tower, there are provided panners 4 and 5 at about 80 (TC).
- the gas to be treated containing malodorous substances is led to a line 6, which is connected to the lower part of each tower 1, 2.3 through a valve 7, 'S.9, and a valve 10, 0, 1 1, Gas purified through 1 2 is discharged from line 13.
- the gas to be treated from the pipe 6 rises from the lower part of the second column 2 through, for example, a valve 8 and exchanges heat, and the odorous substances are oxidized and decomposed by the burner 5, and the heat storage material of the third column 3 ⁇ Heat is stored by heating 14, and the converted gas is discharged from the pipe 13 via the valve 12 and released to the atmosphere.
- the switching operation of the valve is performed by the timer, and the air for purging is supplied to the lower part of the second tower 2 from the pipe 15 to guide the odorous scum in the second tower 2 to the first tower 1, and then
- the gas to be treated is led from the pipe 6 to the lower part of the third tower 3 ′ via the valve 9, heated by the heating material 14, and the odorous substances are oxidized and decomposed by the parner 4,
- the ripening material inside is heated and ripened, and the purified gas is led to line 13 O 95/24593.
- the air for purging is further supplied to the lower part of the third tower 3 from the pipe 15 and guided to the second tower 2 through the wrench 5, and the gas to be treated is passed from the pipe 6 through the valve 7 through the pipe 7.
- the gas supplied to the lower part of the first tower 1 is heated by the heat storage material, the odorous substances are oxidized and decomposed by the parner 4, and the gas purified through the valve 11 from the second tower 2 together with the purge air is sent to the pipeline. Emitted from 13 In this way, the gas to be treated rises in the first to third towers 1, 2, and 3 in order of time by the timer to ripen the ripened material 14 and is heated by the burners 4, 5. The gas descends down the first, second and third towers 1, 2, 3 to radiate heat and heat the aging material 14, thus greatly improving the heat recovery efficiency.
- the problem with the prior art shown in FIG. 22 is that a total of three large towers 1, 2, 3 are required to perform the above-described purging. Before switching from the ripening process of the gas to be treated to the heat radiation process, it is necessary to purge the undecomposed odorous gas remaining in the towers 1, 2, and 3. The amount of air required for this purge is In the prior art shown in FIG. 22, a tower having the same volume as the tower performing the ripening and heat release is required, but the equipment cost is high. In addition, a larger site area is required. Also, a total of six switching valves 7, 8, 9; 10, 11 and 12 and three switching valves for purging are required, and the structure is complicated and expensive.
- the switching operation of the valves 7, 8, 9: 10, 11 and 12 is a so-called semi-batch operation, and the switching operation is performed, for example, about every two minutes. That is common. ⁇
- the required amount of heat storage material is determined by this switching time, and the required amount of heat storage material is about 1 Z 2 every 1 minute, compared to the amount of heat storage material required for switching operation every 2 minutes. Yes, the required amount of aging material is about 1 Z4 at the time of switching operation every 30 seconds, but in the prior art shown in FIG. 22, the operation of valves 7, 8, 9; It takes time and a lot of time to purge a large amount of air, so it is difficult to shorten the switching time of the valves 7, 8, 9; 10, 11, and 12. As described above, there is a problem that the required amount of the heat storage material increases.
- the switching valve 18 is switched, and the gas to be treated from the pipe 17 is heated from the switching valve 18 through the space 24 by the heat storage material 23, heated by the immersion device 22, and heated by the heating material 2 1
- the heat is released to the radiator to be matured, and is discharged from the space 20 through the switching valve 18 and the pipe 25. Such an operation is repeatedly performed.
- FIG. 23 Another prior art solution to this problem is shown in FIG.
- parts similar to and corresponding to the prior art shown in FIG. 23 described above are denoted by the same reference numerals.
- switching valves 27 and 28 are further provided, and a purge valve is further provided.
- a tank 30 is provided for communicating with the atmosphere.
- the gas to be treated containing a malodorous substance is heated from a pipe 17 through a switching valve 18 to a space 20 of a housing 19 by a maturation material 21 and further heated by an electric heater 22. Then, heat is stored through the aging material 23, and the purified gas is discharged from the switching valve 18 and the pipe 25 through the valve 27. At this time, the switching valve 28 is closed. Next, immediately after switching the switching valve 18, the switching valve 27 is closed, the switching valve 28 is opened, the switching valve 18 is opened from the pipeline 17, and the space 20 is moved from the space 24 of the housing 19 to the space 20.
- the exhaust gas After passing through the switching valves 18 and 28, the exhaust gas is stored in the tank 30.After storing the amount required for purging, the switching valve 28 is closed, the switching valve 27 is opened, and the exhaust gas is discharged. The air is exhausted via the switching valve 27. The air containing the odorous gas immediately after the switching stored in the tank 30 is then flowed through a small amount through the pipeline 31 to the pipeline 17 to be mixed with the gas to be treated and processed. I have.
- FIG. 24 also requires a large tower tank 30 for purging, and also requires a switching valve 18 and a switching valve 27, 28 for switching. There is also a problem that time is required and a large amount of mature material is required. Such a problem is similar to that of the prior art described with reference to FIG. 22 described above.
- the segment of the heat storage material to be heated by heating the gas to be treated is lowered by the switching valve so that the clean gas is lowered.
- the switching valve so that the clean gas is lowered.
- An object of the present invention is to provide a regenerative combustion device capable of greatly increasing the heat recovery efficiency, reducing the fuel reaction rate by lowering the oxidation reaction degree, and further reducing the size. And a method of operating the same, and a regenerative heat exchanger.
- Another object of the present invention is to provide a switching valve that can be suitably used in such a regenerative combustion device and an anoretic heat exchanger. Disclosure of the invention
- the present invention provides: (a) a valve box 6 4 having a pair of parts j @ 65, 66 in the axial direction, and connecting ports 61, 62 provided in each of the rooms 65, 66,
- a plurality of fixed valve holes 82 are fixed to one end of the valve box 64 in the axial direction and are spaced around the axis in the circumferential direction.
- valve body 67 housed in the valve box 64 and rotated around the axis, the valve body 67 being positioned around the axis at a position facing one of the chambers 66 on the one end side of the valve box 64 in the axial direction.
- the first and second moving valve holes 86, 87; 88, 89 are formed at intervals in the circumferential direction, and the first and second moving valve holes 86 » 87: 88, 88, A third moving valve hole 90 is formed on one side between 89,
- a partition space 70a, 70b, 71c, 92 provided in the one room 66 forms a guide space 91 that communicates the other room 65 with the first moving valve hole 86.87. Then, the guide space 91 is partitioned from the one room 66, and the one room 66 is communicated with the second moving valve holes 88, 89,
- a communication passage 1 1 1 communicating with the third moving valve hole 90 is formed by the auxiliary partition wall 110, and is fixed to the other between the first and second moving valve holes 86. 87: 88, 89 along the circumferential direction.
- a first moving valve hole characterized in that the first moving valve hole comprises a valve element 7 having a switching member 138 that extends in the circumferential direction so that at least one of the valve holes 82 can be switched separately.
- 86 and 87 may be formed continuously in the circumferential direction, and the second moving valve holes 88 and 89 may be formed continuously in the circumferential direction.
- the moving valve holes 86 and 87 are cut off only for reinforcement, and similarly, the second moving valve holes 88 and 89 are cut off only for reinforcement. It may be formed.
- valve element 67 is
- a rotation shaft 68 rotated around the axis
- a moving valve member which is vertically fixed to the rotating shaft 68 at the one end side in the axial direction of the valve box 64 and has first, second and third moving valve holes 86, 87: 88, 89: 90.
- a fixed valve member which is fixed to the valve box 64 so as to face the moving valve member 69 and overlaps the first, second and third moving valve holes 86, 87; 88. 89: 90 to form a fixed valve hole 82. 71,
- the present invention provides a valve body 67 having a rotating shaft 68 that is rotated around the axis, and the rotating shaft 68 has a shaft hole 106 formed therein.
- the communication passage 1 1 1 communicates with the shaft hole 106
- the rotary shaft 68 is provided with a rotary pipe stay 107 connected to the shaft hole 106.
- valve body 67 has a moving valve member 69 perpendicular to the axis.
- First, second and third moving valve holes 86, 87; 88, 89; 90 are formed,
- the switching portion 138 is formed;
- Sealing materials 97, 98, 101, 102 extending in the radial direction between the first, second and third moving valve holes 86, 87; 88, 89, 90 and slidingly contacting the opposed surface of the fixed valve material 71. Is provided.
- the present invention provides a pair of sealing members 97, 98 on both sides of the third moving valve hole 90 in the circumferential direction, wherein the first angle in the circumferential direction is 1,
- Each fixed valve hole 82 is formed with a second angle ⁇ 92 in the circumferential direction
- the distance between adjacent fixed valve holes is formed by a third angle 3 in the circumferential direction
- the present invention is characterized in that ⁇ > 2.
- the present invention further provides a pair of auxiliary seal members 99, 100 on both circumferential sides of each of the seal members 97, 98,
- the present invention also provides a seal member provided between the first and second moving valve holes 86, 87; 88, 89 along the circumferential direction in the seal portions 97, 98, 101. 102. 101 and 102 are arranged at an angle ⁇ 4 in the switching unit 138,
- the present invention also provides (a) a housing 52,
- valve box 64 having a pair of chambers 65, 66 in the axial ⁇ direction, and connection ports 61, 62 provided in each section,
- a plurality of fixed valve holes 82 are formed at one end in the axial direction of the valve box 64 and are spaced around the axis in the circumferential direction, and a plurality of passages 84, Passage forming means 7 1, 52, 55 forming 1 1 3 to 120;
- valve rest 67 which is contained in the valve box 64 and is rotated around the axis
- First and second moving valve holes 86.87: 88.89 which are circumferentially spaced around the axis at a position facing one of the chambers 66 of the one end portion of the valve box 64 in the axial direction. Is formed, and a third moving valve hole 90 is formed at one of the first and second moving valve holes 86, 87; 88, 89 along the circumferential direction,
- the partition space 70a, 70b.71c, 92 provided in the one room 66 ⁇ guides the other space 65 to the first moving valve holes 86,87. 1, the guide space 91 is partitioned from the one room 66, the one room 66 is communicated with the second moving valve holes 88, 89,
- a communication passage 111 communicating with the third moving valve hole 90 is formed by the auxiliary partition wall 110, and the other is located between the second moving valve holes 86, 87; 88, 89 along the circumferential direction.
- the gas to be treated is supplied to one of the rooms 65 or the other.
- a clean purge gas is supplied to the communication path 1 1 1 in the same flow direction as the gas to be treated.
- valve body 67 is provided with a rotary drive source in the direction in which the purging gas is switched and passed through the plurality of passages 84, 113 to 120 through which the gas to be treated flows.
- a regenerative combustion device characterized in that it is turned to zero by a gas.
- a ripening means 59 is provided in the space above the housing, and a space partition 56 fixed to the upper part of the housing to form the space 57 is provided,
- the communication hole 58 is characterized by being formed by a perforated plate which is disposed above the catalyst 54 at an interval from an upper portion thereof and has a large number of apertures dispersed therein.
- a pretreatment material 141 for removing a substance contained in the gas to be treated and degrading the catalyst 54 is interposed between the heat storage material 53 and the catalyst 54,
- Catalyst 5 4 the honeycomb as a base material, characterized by a specific heat use and about 0, lkcal / e C.
- the present invention is characterized in that the pretreatment material 141 is made of a corrugated base material, and the present invention is characterized in that the gas to be treated is included between the heat storage material 53 and the catalyst 54.
- the present invention is characterized in that a means for controlling the heating means 59 is provided such that the temperature of the pretreatment material 141 becomes 250 or more.
- valve element 67 is
- a rotating shaft 68 rotated around the axis
- the first, second and third moving valve holes 86, 87: 88, 89, 90 are fixed to the rotating shaft 68 vertically at the one end measurement in the axial direction of the valve box 64. Having a moving valve member 69 formed,
- a fixed valve hole 82 is formed in the valve box 64 so as to face the movable valve member 69 and overlap the first, second and third movable valve holes 86, 87: 88, 89; 90.
- valve element 67 has a rotation shaft 68 that is rotated around the axis, and the rotation shaft 68 has a shaft hole 106 formed therein.
- the communication passage 1 1 1 communicates with the shaft hole 106
- the rotary shaft 68 is provided with a rotary pipe joint 107 connected to the shaft hole 106.
- valve body 67 has a moving valve member 69 perpendicular to the axis.
- the first, second and third moving valve holes 86, 87: 88, 89; 90 are formed,
- the switching portion 138 is formed;
- Sealing materials 97, 98, 101, 102 extending in the radial direction between the first, second and third moving valve holes 86, 87; 88, 89; 90 and slidingly contacting the opposing surface of the fixed valve material 71. Is provided.
- the present invention also provides a first circumferential angle of the pair of sealing materials 97 and 98 on both sides of the third moving valve hole 9 ⁇ in the circumferential direction is set to ⁇ 1,
- Each fixed valve hole 82 is formed by a second angle ⁇ 2 in the circumferential direction
- the distance between adjacent fixed valve holes is circumferentially formed by a third angle ⁇ 93,
- the present invention is characterized in that ⁇ 3> ⁇ 2.
- the present invention further provides a pair of folding seals 99, 100 on both circumferential sides of each of the sealing materials 97, 98,
- a seal member provided between the first and second moving valve holes 86, 87; 88, 89 along the circumferential direction of the seal portions 97, 98, 101, 102. 101, 102 are arranged at an angle ⁇ 4 in the switching capital 138,
- the present invention relates to (a) a regenerative combustion device
- the heat storage material 53 and the catalyst 54 extend vertically in the housing 52 and are separated from each other at circumferential intervals so as to form passages 84, 113-120, and a common space at the top of the housing.
- valve box 64 having a pair of chambers 65 and 66 in the axial direction, and connection ports 61 and 62 respectively provided in each chamber;
- a plurality of fixed valve holes 82 are fixed to one end of the valve box 64 in the axial direction, and are spaced from each other in the circumferential direction around the axis, and a plurality of passages 84, Passage forming means 71.52, 55 forming 1 13-120;
- valve element 67 housed in a valve box 64 and rotated around the axis
- the first and second moving valve holes 86, 87; 88, 89 are spaced circumferentially around the axis at a position facing one of the chambers 66 at one end of the valve box 64 in the axial direction. Is formed, and a third moving valve hole 90 is formed at one side between the first and second moving valve holes 86, 87: 88, 89 along the circumferential direction.
- a partition space 70a, 70b, 71c, 92 provided in the one room 66 ⁇ forms a guide space 91 that communicates the other room 65 with the first moving valve holes 86,87.
- the guide space 91 is partitioned from the one room 66, and the one room 66 communicates with the second moving valve holes 88, 89, O 95/24593
- the communication passage 1 1 1 communicating with the third moving valve hole 90 is formed by the auxiliary partition 1 10 .'The other between the first and second moving valve holes 86, 87: 88, 89 along the circumferential direction.
- a switching valve 51 having a switching element 138 having a switching member 138 that expands in a circumferential direction so that at least one of the fixed valve holes 82 can be closed;
- the gas to be treated is supplied to either the one or the other room 65, and guides the purified gas from any of the remaining rooms 66,
- valve element 67 is rotated by the rotary drive source in a direction in which the purge gas is switched and flows through the passages 84 and 113 to 120 through which the gas to be processed flows,
- Heating means is provided in the space above the housing,
- a communication hole 58 is formed to individually arrest each of the passages 84, 1 13 to 120 partitioned by the partition plate 55,
- the communication hole 58 is provided with a regenerative combustion device formed by a perforated plate having a large number of holes dispersed therein, which is disposed above the catalyst 54 at a distance from the upper part of the catalyst 54, and
- the present invention also provides (a) a housing 52;
- valve box 64 having a pair of chambers 65, 66 in the axial direction, and connecting chambers 61, 62 provided in each room
- a plurality of fixed valve holes 82 are formed at one end in the axial direction of the valve box 64 and are circumferentially spaced around the axis, and the passages 84, 1 13 are provided for each fixed valve hole 82.
- the first and second moving valve holes 86, 87, 88, 89 are circumferentially spaced around the axis at a position facing one of the chambers 66 on the one end side in the axial direction of the valve box 64. And a third moving valve hole 90 is formed in one of the first and second moving valve holes 86, 87; 88, 89 along the circumferential direction.
- a partition space 70a, 70b, 71c, 92 provided in the above-mentioned room 66 forms a guide space 91 that communicates the other room 65 with the first moving valve holes 86, 87. Then, the guide space 91 is partitioned from the one room 66, and the one Roya 66 communicates with the second moving valve holes 88, 89,
- a communication passage 1 1 1 communicating with the third moving valve hole 90 is formed by the auxiliary partition wall 110, and is fixed to the other between the first and second moving valve holes 86, 87 and 88, 89 along the circumferential direction.
- the low-temperature gas is supplied to the remaining room 66 g of either the first or second switching valve 51 g, and the remaining room 66 of the first or second other switching valve 51 is supplied.
- a heat type heat exchanger characterized by being guided to
- the valve box has a pair of chambers 65 and 66 formed in the axial direction.
- a fluid such as a gas to be treated
- the valve is opened.
- the passages 84, 1 for each fixed valve hole 82.
- Fluid such as, for example, clean gas from a passage provided in communication with the other fixed valve hole 82 passes through the second moving valve hole 88 ′, 89 of the moving valve member 69 from the other fixed valve hole 82.
- the valve body 67 has a third moving valve hole 90 formed at one of the first and second moving valve holes 86, 87: 88, 89 along the circumferential direction.
- a communication passage 111 communicating with the third moving valve hole 90 via the auxiliary partition 110 is formed, so that a fluid such as air for purging guided to the shaft hole 106 via the rotary pipe curtain 107 can be assisted. It can flow from the communication passage 111 formed by the partition wall 110, through the third moving valve hole 90, and through the fixed valve hole 82 of the passage forming means 71, 52, 55.
- the third moving valve hole 90 is formed in one of the first and second moving valve holes 86, 87; 88, 89 along the circumferential direction as described above,
- a switching portion 138 is formed so as to expand in the circumferential direction to form a plurality of fixed valve holes 82. At least one of them is configured to be able to close, so that during the rotation of the valve body 67, the switching part 138 of the valve body 67 hermetically closes the fixed valve hole 82 in a short time.
- the first moving valve hole 86 is provided in the passages 84, 113 to 120 that individually communicate with the closed fixed valve hole 82.
- 87 flows through, for example, the gas to be treated, or purifies, for example, through second moving valve holes 88, 89 Fluid such as gas flows, and thus the fluid such as gas flows almost always through the plurality of passages 84, 113 to 120 formed in the passage forming means 71, 52, 55, Passing passages 84, 113-120 are eliminated, and operating efficiency is improved.
- This is particularly advantageous when the present study is carried out in connection with a bodily burner and a regenerative heat exchanger as described below in connection with the passage forming means 71, 52, 55. .
- the second angle in the circumferential direction of the fixed valve hole 82 in the switching valve 51 O 95/24593 degrees 52 is less than or equal to the first angle ⁇ 1 in the circumferential direction of the sealing materials 97 and 98 on both sides of the third moving valve hole 90 in the circumferential direction, and the circumferential direction of the adjacent fixed valve holes 82
- the third angle ⁇ 3 or less which is the interval between the two, makes it possible to reduce the mixing of the three components such as the gas to be treated, the air for purging and the cleaned gas to zero or sufficiently small.
- the first angle is set to be not more than ⁇ 3, whereby two fixed valve holes 82 adjacent to both circumferentially one of the number of raft fixed valve holes 82 communicating with the third moving valve hole 90 are formed. Thus, airtightness is achieved without the one fixed valve hole 90 communicating undesirably.
- the second angle 2 is selected to be less than the third angle 3, that is, the porosity of the fixed valve member 71 is set to less than 50%, and the leakage of the three gases is more reliably prevented. Can be.
- the angle 05 in the circumferential direction of the pair of auxiliary sealing materials 99, 100 arranged on both sides in the circumferential direction further than the pair of sealing materials 97, 98 arranged on both sides of the third moving valve hole 90. Is set to be equal to or greater than the circumferential angle 02 of the fixed valve hole 82 and ( ⁇ 92 + ⁇ 3) or less, whereby both of the one moving valve hole 82 communicating with the third moving valve hole 90 are set. It is possible to more reliably prevent the one third moving valve hole 90 from passing through the two fixed valve holes 82 adjacent to the lavatory, and it is possible to further improve the airtightness.
- the switching portion 138 allows one of the fixed valve holes 82a to be highly airtight and the first and the second valve holes 82a to be adjacent to the switching member 138.
- the airtightness can be achieved without communicating with the second moving valve holes 87 and 88.
- the angle 04 of the sealing materials 101 and 102 of the switching portion 138 to be approximately equal to the angle ⁇ 92 of the fixed valve hole 82a, one fixed valve hole 82a closed by the switching portion 138 is formed into a valve body.
- the valve is closed for a very short time, so that the passages 84, 113 to 120 for each fixed valve hole 82, 82a almost always have the first, second, and It becomes possible to communicate with the third moving valve holes 86, 87; 88, 89; 90, so that the operating efficiency of each of the passages 84, 113 to 120 can be improved.
- a switching section 138 which is a switching zone as described above is further described. And sealing materials 101 and 102 for the Mutual leakage of the three gases can be more reliably prevented.
- the above-mentioned switching valve is provided at a lower portion of a housing containing an oxidized material, and a catalyst for catalytically burning and decomposing a malodorous substance of a gas to be treated in an upper portion of a heat storage material in the housing.
- a catalyst for catalytically burning and decomposing a malodorous substance of a gas to be treated in an upper portion of a heat storage material in the housing In the housing, passages 84, 113-120 containing a heat storage material and a catalyst are formed for each fixed valve hole of the fixed valve member by a partition plate 55, and thus rotated. By rotating the shaft, the gas to be treated containing a malodorous component is supplied to the other room 65 of the valve box. The heat heated by the heat storage material is absorbed by the gas to be treated, and the catalyst causes malodor.
- the substance is oxidatively decomposed, more preferably heated by a heating means, for example, a wrench or an electric heater, to ensure oxidative decomposition, and the high-temperature purified gas is led to the heat storage material to heat the ripened material. And the purified gas is cooled down.
- a heating means for example, a wrench or an electric heater
- the purge gas is flooded in the same flow direction as the gas to be treated (for example, upward in the embodiment described later), and the valve element 67 is rotated by the rotary driving sources 79, 8.
- the direction of rotation is determined by the direction in which the purging gas is switched and passed through the passages 84, 113 to 120 through which the gas to be treated flows. Therefore, in a state where the gas to be treated is flowing through the passages 84, 113 to 120, the purge gas is then supplied in the same flow direction as the gas to be treated.
- the gas to be treated flows through the switched passages 84, 113 to 120 without remaining, and the gas to be treated in the passages 84, 113 to 120 is purified. It is surely prevented from being mixed into the exhaust gas.
- the rotation direction of the valve body 67 is the above-described rotation.
- the direction is opposite to the direction, and in any rotational direction, after the gas to be treated is passed through the passages 84, 113 to 120, the purge gas is switched and passed, Then, the rotation direction of the valve body 67 is determined so that the oxidized gas flows through. ⁇
- the high-temperature gas does not come into contact with the switching valve, so that the production of the switching valve is easy. .
- air for purge is supplied from the shaft hole 106 through the rotary pipe joint 107 and the communication passage 111 through the communication passage 111, and thus the heat storage material and the catalyst in which the gas to be treated remains are removed.
- the gas to be treated in the communication path including the gas can be purged with a small amount of gas such as purge air to be purified. Therefore, the circumferential area of the third moving valve hole for purging may be small, and by this, the amount of heat storage material can be reduced, and the excellent effect that the structure can be downsized can be achieved.
- a space partition 56 is fixed to the upper part of the housing 52 to form the space 57 common to a plurality of passages 84, 113 to 120.
- the space 57 is provided with the heating means as described above, and the space partition 56 is individually communicated with each of the passages 84, 113-120, which are partitioned by the partition 55.
- a communication hole 58 is formed, whereby the gas to be treated and the air for purging, which have risen among the passages 84, 113 to 120, are surely guided to the space 57.
- the gas to be treated and the purge air are prevented from short-circuiting like the purified gas and flowing through a short path, and the purified gas discharged from the space 57 is prevented.
- the communication holes 58 are arranged above the catalyst 54 at an interval from the upper part, and are realized by a perforated plate such as a punched metal, and a large number of holes are dispersed.
- This causes an appropriate pressure loss when the gas to be treated and the gas for purging flow to the common space 57, and the gas to be treated and the gas for purging are generated in the space 57 °.
- the flow velocity is about 5 to 20 m / sec, and the distribution of the flow velocity is almost uniform and equal for each of the large number of openings, whereby the mixing of the gas in the space 57 is reduced. Sufficiently performed, mixing and heating of gas by ripening means and oxidative decomposition of odorous components are surely performed.
- the air velocity of the gas to be treated and the gas for purging into the space 57 is less than about 5 m and Z sec, the mixing of the gas in the space 57 becomes rapidly insufficient, so that from the space 57, The variation in the distribution of gas temperatures when exhausted as purified gas becomes large, that is, the temperature difference between the maximum temperature and the minimum temperature of the gas exhausted from the space 57 becomes too large.
- the wind speed exceeds about 20 mZ sec, the pressure loss in the large number of communication holes 58 becomes too large, and the power of the fan for pumping the gas to be treated and the purge gas becomes large. It will be connected.
- a pretreatment material is interposed between the heat storage material and the catalyst to remove substances that degrade the catalyst contained in the gas to be treated by oxidation or the like
- the catalyst has a structure in which a honeycomb substrate i.e. carrier, pretreatment material specific heat of about 0. 1 kca 1 Z e C . L or less (where, L stands for L iter) select this, is this Therefore the heating means
- the temperature in the provided space 57 is maintained at, for example, about 350 ° C.
- the temperature of the pretreatment material and the catalyst that come into contact with the gas to be treated and the gas for purging It can be maintained at a temperature for good operation, for example, 250 ° C. or higher, preferably 30 CTC or higher.
- a catalyst based on a honeycomb that is, a honeycomb catalyst, has a capacity velocity S V (
- Space Velocity is 4 000, and the specific heat of the pre-treated material is about 0.1 kca 1 / e C ⁇ L. Can be reduced. Therefore, it is possible to prevent the gas which has been heated from the space 57 heated by the heating means from being absorbed by the catalyst and the pretreatment material to lower the temperature, and the action of the catalyst and the pretreatment material is sufficient.
- the material to be treated can be processed while maintaining the temperature at or above the temperature suitable for achieving the above conditions.
- the catalyst is made of a foamed metal as a base material
- the pretreated material is a pretreated material having a corrugated or honeycomb structure as a base material.
- the catalyst used as the base material has an SV value of 600,000. As described above, a catalyst having a larger SV value requires a smaller amount of filling and has a smaller heat transfer effect.
- the temperature of the processing material can be increased by the gas liquefied from the space 57 to process the gas to be processed.
- the heating means is controlled by the control means, and the amount of heat generated by the heating means is such that the fuel supplied to the heating means is so controlled that the temperature of the pretreatment material becomes 25 O'C or more.
- the flow rate or electric power of the gas is controlled, whereby the gas to be treated sufficiently removes the catalyst-deteriorating substance by the pretreatment material, and the catalyst can be heated and oxidized.
- a pair of switching valves are provided above and below the housing containing the storage material, thereby realizing a parallel-flow or counter-current-type trickle heat exchange.
- the switching valve of the present invention can be implemented in a wide range of applications, as well as regenerative combustion devices and bodily heat exchangers.
- FIG. 1 is a simplified longitudinal sectional view showing the overall ellipse of the regenerative catalytic combustion device 50.
- FIG. 2 is a diagram showing the vicinity of the switching valve 51 in the regenerative catalytic combustion device 50 according to one embodiment of the present invention.
- FIG. 3 is a simplified perspective view showing the internal structure of the regenerative catalytic combustion device 50, and
- FIG. 4 is a horizontal sectional view taken along line IV-IV in FIG. 5 is a simplified perspective view showing a part of the structure of the valve element 67,
- FIG. 6 is a plan view of the valve elements 7 and the like, and
- FIG. 7 is a bottom view of the valve element 67.
- 8 is a cross-sectional view of the sealing material 97.
- FIG. 1 is a simplified longitudinal sectional view showing the overall ellipse of the regenerative catalytic combustion device 50.
- FIG. 2 is a diagram showing the vicinity of the switching valve 51 in the regenerative catalytic combustion device 50
- FIG. 9 is a cross-sectional view of a part of the valve element 67 viewed from IX—IX in FIG. 2, and FIG. 10 is a cutaway of the housing 52 in FIG.
- FIG. 11 is a simplified cross-sectional view taken along the plane line X—X.
- FIG. 11 shows the movement of the moving valve member 69 and the fixed valve member 71 1 in the circumferential direction for explaining the operation of the switching valve 51.
- FIG. 12 is a cross-sectional view showing a structure including a sealing material 124 according to another embodiment of the present invention.
- FIG. 13 is a cross-sectional view taken along a line XIII-XIII of FIG.
- FIG. 14 is a circumferential development of a partition 56 for a space 57, and FIG.
- FIG. 15 is a partition corresponding to FIG. 14 of another embodiment of the present invention.
- FIG. 5 is a simplified circumferential development diagram of FIG. 6, and FIG. 16 is a graph showing the relationship between the wind speed and the pressure loss that are connected to the communication hole 58, and FIG. 17 is a graph showing the relationship between the wind speed and the wind speed of the communication hole 58.
- FIG. 18 is a graph showing the relationship between the temperature difference between the highest temperature and the lowest temperature in the distribution of the purified gas discharged from the space 57, and FIG. 18 shows the temperature of the organic solvent contained in the gas to be treated;
- FIG. 19 is a graph showing the relationship between the temperature rise ⁇ ⁇ and the corresponding temperature increase ⁇ ⁇ , and FIG.
- FIG. 19 is a graph showing the heat exchange efficiency ⁇ of the regenerative catalytic combustion device 50.
- FIG. 20 is a perspective view showing the shape of the pellet, the shape of the honeycomb, and the shape of the foam metal of the catalyst 54.
- FIG. 21 is a simplified heat storage type heat exchanger 128 of another embodiment of the present invention.
- FIG. 22 is a partially cutaway perspective view of the prior art
- FIG. 23 is a cross sectional view of another prior art
- FIG. 24 is a cross sectional view of the prior art shown in FIG. It is sectional drawing which shows the other prior art which improved the technique.
- FIG. 1 is a cross-sectional view schematically showing the overall shape of a regenerative catalytic combustion device 50 according to an embodiment of the present invention.
- FIG. 2 is a switching valve 5 near the lower portion of the regenerative catalytic combustion device 50.
- 1 is a cross-sectional view, and FIG. 3 simplifies the ellipse inside the regenerative catalytic combustion device 50.
- an S-heating material 53 such as ceramic grains or Raschig rings is housed in a generally right-cylindrical housing 52 extending vertically, and an upper portion of the heat storage material 53 is provided.
- a catalyst 54 for thermally decomposing malodorous components of the gas to be treated is provided.
- a pretreatment material 141 for removing substances that degrade the catalyst contained in the gas to be treated by oxidation or the like is interposed.
- the catalyst 54 is a base.
- the material may have a structure in which platinum or palladium is covered on the surface, and the pretreatment material may be alumina or zeolite.
- a plurality of passages extending vertically and partitioning the heat storage material 53 and the catalyst 54 at equal intervals in the circumferential direction to form a passage 84 extending vertically (see FIG. 4 described later) are formed.
- a total of eight partition plates 55 are provided.
- the upper part of the partition plate 55 is formed in a combustion chamber 57, which is formed by, for example, a hollow inverted truncated cone-shaped partition wall 56 attached to the upper part of the housing 52 and is a space common to the passage 84. However, they are fixed so as to communicate with each other through the through holes 58.
- a bottom plate 139 that forms the bottom of the space 57 is provided below the partition wall 56.
- an electric heater or a panner 59 is provided as a heating means, and the burner 59 burns gas or liquid fuel.
- a hollow cylindrical body 0 is fixed to the lower part of the partition wall 56. ⁇
- the gas to be treated containing odorous substances is supplied from the connection port 61 of the switching valve 51 provided at the lower part of the housing 52, and the purified gas is led out from the connection port 62.
- a substantially straight cylindrical valve box 64 coaxial with a vertical rotation axis 63 extending vertically is provided in the switching valve 51.
- a pair of chambers 65 and 66 communicating with the connection ports 61 and 62 are formed in the valve box 64.
- a valve body 67 which is driven to rotate around an axis 63, is housed in the valve box 64.
- the valve body 67 is basically composed of a rotating shaft 68 and a disk-shaped moving valve.
- a fixed valve member 71 having a member 69 and a partition wall 70 and being a constituent element of the switching valve 51 is fixed to a lower mirror 72 of the housing 52.
- the rotating shaft 68 is supported by a bearing 74 capable of receiving a thrust force at the end 73 of the valve box 64, and is also fixed integrally with the end plate 72 in the housing 52.
- the rotating shaft 68 is fixed to a sprocket wheel 77, a chain 78 is wound around the sprocket wheel 79, and the sprocket wheel 79 is rotationally driven by a driving source 80.
- FIG. 4 is a cross-sectional view taken along section line IV—IV in FIG.
- the fixed valve member 7 1 A plurality of fixed valve holes 82 are formed in the circumferential direction (8 in the embodiment) and equally spaced at an angle of 2, for example, a total of eight fixed valve holes 82.
- the space between adjacent fixed valve holes 82 is formed at a third angle 3 in the circumferential direction.
- the partition plate 55 is circumferentially provided on the upper surface of the fixed valve member 71 between the fixed valve holes 82.
- the passages 84 are fixed at intervals and thus formed into the housing 52 so as to form eight equally-divided vertically extending passages 84, and each passage 84 individually communicates with the fixed valve hole 82.
- FIG. 5 is a simplified perspective view of the valve element 67
- FIG. 6 is a plan view of the valve element 67
- FIG. 7 is a bottom view of the valve element 67.
- moving valve member 69 has a circular shape, and is vertically fixed to rotating shaft 68 at a position facing room 66.
- first moving valve holes 86, 87 and second moving valve holes 88, 89 are formed in the circumferential direction around the axis 63, and these first and second moving valve holes 86, 87 are formed.
- the third moving valve hole 90 is formed by first and second moving valve holes 86, along the circumferential direction of the valve body 67.
- a switching portion 138 is formed on one side between the first and second moving valve holes 87 and 88 along the circumferential direction.
- the gas to be treated rises and flows through the first moving valve holes 86 and 87 as shown by reference numeral 142 as described later, and the second moving valve holes 88 and 89 have the reference numeral 143.
- the purified gas is flowed downward as indicated by, and clean purging air is raised in the third moving valve hole 90 as indicated by reference numeral 144.
- the switching unit 138 separates at least one of the fixed valve holes 82 (one in this embodiment) along the circumferential direction between the first and second movable valve holes 87 and 88. It extends in the circumferential direction so that it can be switched, the angle of which is indicated by the reference number ⁇ 94 between the seals 101, 102 in the figure.
- the switching unit 138 is for switching between the upward flow and the downward flow of the gas, as will be described later in connection with the operation described below, and in the above-described plurality of passages 84, 113 to 120,
- the gas is constantly rising or falling, and only momentarily becomes the state shown in Fig. 11 (1).
- the gas flow direction Instantaneously switches from falling to rising.
- the partition wall 70 is composed of an arc-shaped partition wall 70a and plate-shaped partition walls 70b, 70c, 70d, 70e, and may be collectively indicated by reference numeral 70.
- the partition 70 a has a shape substantially elliptical in a part of a hollow truncated cone, and the upper part is fixed to the lower surface of the moving valve member 69, and similarly, the partition 70 b, 70 c is also fixed to the lower surface of the moving valve member 69, and the partition walls 70b and 70c are fixed to the outer peripheral surface of the rotating shaft 68 along the axial direction, thus forming the chamber 65 into the first moving valve holes 86 and 87.
- a guide space 91 communicating with the vehicle is formed.
- the guide space 91 ' is airtightly partitioned from the other room 66 by the partition walls 70a, 70b, 7Oc.
- the partition walls 70 d and 70 e are used for reinforcing the moving valve member 69.
- Another partition 92 is fixed below the partition 70a, and a communication hole 93 that connects the guide space 91 to the room 65 is formed in the partition 92.
- the partition wall 92 also separates the rooms 65 and 66 outside the guide space 91.
- a short tube portion 94 is fixed to the outer periphery of the partition wall 92, and a seal material 96 is provided between the outer periphery of the short tube portion 94 and the partition wall 95 formed in the valve box 64, thereby achieving airtightness. Is done.
- annular inner seal member 104a and an annular outer seal member 104b are provided concentrically around the axis 63 on the upper part of the moving valve member 69, and furthermore, seal members 97, 98 extending in the radial direction, and an auxiliary seal are provided. Materials 99 and 100 are provided, and seal materials 101 and 102 are provided.
- the seal member 97 has a moving valve member 69 having a closed hole 103 formed therein, and the seal member 97 is embedded and fixed therein. The upper portion of the seal member 97 resiliently slides on the lower surface of the fixed valve member 71 to achieve airtightness.
- the sealing member 97 may be, for example, an O-ring, or may have another configuration.
- the above-mentioned auxiliary seal members 99, 100 are provided on both sides in the circumferential direction of the seal members 97, 98 at an angle 05, respectively.
- sealing materials 101 and 102 are provided symmetrically with respect to the axis 63 with respect to the sealing materials 97 and 98.
- the circumferential angle 4 of the sealing materials 101 and 102 is 22.5 in this embodiment. It is.
- the rotary shaft 68 is formed with a shaft hole 106 along the axis 63, A rotary pipe joint .107 is connected to its lower part. Purge air is pressure-fed to the rotating pipe 107 via a pipe 108.
- the connection hole 109 on the upper part of the rotating shaft 68 communicates with the third moving valve hole 90 by a communication passage 111 formed by the auxiliary partition 110.
- FIG. 9 is a cross-sectional view showing a part of the valve element 67 as viewed from a section line IX-IX in FIG.
- the auxiliary partition wall 110 is fixed across the partition wall 70c and the lower surface of the moving valve member 69, and the communication passage 111 connects the third moving valve hole 90 to the shaft hole 106. It communicates through the opening 109.
- FIG. 10 is a horizontal cross-sectional view of the lower portion of the housing 52 as viewed from the section line XX of FIG. No., housing 5
- Each of the areas 11 3 to 120 formed by the eight passages 8 4 partitioned by the partition 5 5 in the partition 5 5 has the heat storage material 5 3 and the catalyst
- the gas to be treated ascends by absorbing the heat stored in the heat storage material 53 and rises in the area 113 to 115 by the movement of the switching valve 51.
- area 117-119 the odorous components are oxidized and decomposed and the purified gas descends, and the heat is released to the heat storage material 53 to store heat.
- the area 120 is airtight.
- the so-called switching zone 120 works to achieve For example, when the valve body 67 of the switching valve 51 rotates in the direction of the arrow 121, a certain area 115 in the housing 52 is processed as shown by the arrow 133. Period during which the gas rises (see Fig. 11 (1) below)-Period during which the gas is purged by air (see Fig. 11 (4))-The period is switched in the order in which the purged gas falls.
- the gas to be treated containing the evil substance rises, and the gas to be treated remaining in the region 115 supplied has been purged.
- the inside of 15 is purified, and after that, the purified gas after oxidative decomposition of malodorous substances is led, so that the processing gas containing malodorous substances is prevented from entering the room 66 and the connection port 62. Can come off.
- FIG. 11 is a circumferential development of the movable valve member 69 and the fixed valve member 71 in the switching valve 51.
- the region 1 16 which is one of the regions 113 to 120 which is the passage 84 divided by the partition plate 55 in the housing 52, includes: The purge air is raised through the third moving valve hole 90 and the fixed valve hole 82.
- One of a plurality (8 in this embodiment) of fixed valve holes 82, a reference numeral 8 2a The fixed valve hole 82a is sealed by the seal materials 101 and 102, and the gas to be treated and the purified gas do not flow into the switching zone region 120.
- the area 116 is supplied with purging air.
- the sealing materials 97 and 98 are formed as shown in FIG. 11 (3). Makes contact with the portion 123 of the fixed valve member 71 adjacent to the fixed valve hole 82 through which the purge air has flowed, and the region 116 is in a state in which the purified gas can flow down.
- the purge region moves to the region 115 where the target gas has risen.
- the purified gas does not leak from the region 115 where the gas to be treated has risen directly to the region 117 where the gas to be treated falls. This is the same in the switching zone 120 by the action of the sealing materials 101 and 102.
- the gas to be treated is supplied to one of the chambers 65, and the purified gas is guided to and discharged from the other room 66.
- the processing target gas may be supplied to the room 66, and the purified gas may be guided from the room 65 and discharged.
- One of the important configurations of the present invention is that, by the action of the switching valve 51, in the area 120 which is the switching zone in FIG. At the next moment after the state of FIG. 11 (3) where the processing gas is raised and the gas to be processed is rising, the oxidized gas is lowered. Immediately before FIG. 11 (1), the purified gas is lowered from the region 120 through the second moving valve hole 88, and after the gas flow is instantaneously shut off in the state of FIG. 11 (1), As shown in Fig. 11 (2), the processing target is raised as shown in Fig. 11. Therefore, during rotation of the valve element 67 of the switching valve 51, a region 113 to 1, which is a total of eight passages 84 in the housing 52, is provided.
- the region where the gas to be treated and the purified gas are not passed through for purging is substantially only one region 116 in FIG.
- the time required to use the heat storage material 53, the catalyst 54, and the pretreatment material 141 becomes longer, and Efficiency will be improved.
- the porosity of the fixed valve member 71 may be set to less than 50% so as to prevent gas leakage more reliably.
- the angle 6 of the auxiliary sealing material 99, 100 is
- the angle of the pair of sealing materials 101, 102 provided on both circumferentially opposite sides of the switching unit 138 is
- the single fixed valve hole 82a can be reliably hermetically closed.
- a seal made of a material such as ceramic is used in place of the seal material 97 described in connection with the above-mentioned item 8, especially when a high-temperature gas is used.
- An elastic force may be applied to the member 124 by using a spring 125, and the sealing member 124 may slide on the lower surface of the fixed valve member 1 to achieve airtightness.
- the seal member 124 and the spring 125 are fitted into a recess 126 formed above the moving valve member 69.
- Such a configuration shown in FIG. 12 can be similarly implemented with respect to all the remaining sealing materials 104a, 104b, 98 to 102.
- FIG. 13 is a simplified horizontal cross-sectional view taken along the line XIII-XIII of FIG.
- the upper part of the partition 55 is air-tightly fixed to the partition wall 56, and is also air-tightly fixed to the cylindrical body 60 connected thereunder.
- the lower part of the partition 55 is a fixed valve as shown in FIG. It is airtightly fixed to the member 84.
- Partition wall 56 is housing 52 It is fixed airtight to the upper end plate.
- the partition wall 56 is formed with a communication hole 58 that individually communicates with each of the passages 84, 113 to 120 partitioned by the partition plate 55.
- FIG. 14 is a circumferential development view of a part of the partition wall 56.
- the communication holes 58 are realized by a large number of openings formed in a perforated plate 143 such as a so-called punching metal (the openings 58 are arranged in a dispersed manner.
- the communication holes 58 are formed from the upper surface of the bottom 139. It is formed above at a distance h1 above and dispersed above as described above.
- the through hole 58 may be circular as shown in FIG. In another embodiment shown in Figure ii, it may be elongate in the circumferential direction, as indicated by reference numeral 144, so to speak oval, or other shapes.
- These communication holes 58 and 144 are provided at a distance h 1 from above the bottom plate 139 as described above, and are formed at a distance approximately equal to the distance h 1 from above the catalyst 54. Therefore, the gas to be treated enters the room 65 from the connection port 61 as described above, rises in the housing 52, and can reliably enter the space 57 ⁇ through the communication hole 58, and is purified to the room 66 side. Short pass that is mixed with gas is surely prevented.
- the operating conditions are determined so that the gas velocity of the gas to be processed, which is blown into the room 57 through the communication hole 58, is, for example, about 5 to about 2 Om / sec.
- the inner diameter and number are determined, and the supplied flow rate of the gas to be treated is determined. This range of wind speeds is for temperature equalization due to gas mixing in the room 50. This will be described in more detail with reference to FIGS. 16 and 17. ⁇ The experimental results of the present inventors in FIGS. 16 and 17 show that the inside diameter of the housing 52 is 1.2 m ⁇ i>, an air flow 20 Nm 3 / min of gas, the space 56, the remains are kept constant to 350 e C by PANA 59 or an electric heater.
- the communication hole 58 is set to a wind speed of about 2 OmZsec or less.
- FIG. 17 shows the relationship between the wind speed when the purified gas descends from the space 57 through the communication hole 58 and the maximum temperature and the minimum temperature of the distributed temperature of the gas immediately before being discharged in the space 57. It is a graph which shows a check with a difference. If you increase the wind speed, The gas in 57 is sufficiently mixed to reduce the temperature difference, resulting in a uniform temperature distribution.On the other hand, as described with reference to FIG. 16 described above, the pressure loss sharply increases. . When the purified gas is exhausted from the space 57 through the through hole 58 and the wind speed is too low, the pressure loss is sufficiently small, but on the other hand, the temperature difference in the temperature distribution of the purified gas is low.
- the wind speed of the processing gas blown into the space 57 is set to about 5 mZsec or more.
- the temperature of the gas to be treated is shown in FIG. 18 by the heat of combustion of the organic solvent contained in the gas to be treated.
- the reaction temperature in a steady state is generally about 300 to 350 ° C.
- the heat-resistant temperature of the catalyst 54 and the pretreatment material 141 is about 550 ° C. is there.
- the performance of a regenerative catalytic combustion device is represented by the heat exchange efficiency ⁇ defined in Equation 1.
- ⁇ (tc 2 *-tcl) / (thl -tcl) (1)
- t is the temperature of the force
- subscripts c and h represent the low temperature side and the high temperature side, respectively.
- 2 represent inlet and outlet.
- t c 2 * is the average outlet temperature of the low-temperature gas.
- FIG. 19 is a graph showing the heat exchange efficiency of the storage type catalytic combustion device 50.
- the value of the heat exchange efficiency ⁇ is based on the assumption that the specific heat and heat transfer coefficient of the gas are constant irrespective of time and position, and that there is no loss due to leakage and carry over.
- NTU in the figure. Is a modified, non-dimensional number called the NTU or Ovre-all Number of Transfer Unit. It is defined by Equation 2.
- NTU 0 W7 [ (1 hA) c + (1 / hA) h ] 7) where h is the heat transfer coefficient [kcai m 2 ⁇ H r ⁇ . C] and A are heat transfer areas [m 2 ].
- H r is an abbreviation for Ho ur.
- Wc is the water equivalent of one of the gases, ie, the gas to be treated or the gas after purification, and Wr is the water equivalent of the ripening material 53, which is given by Equations 3 and 4, respectively.
- Wr n-Mr-cr [kc1 / ° C ⁇ Hr]-"(4)
- n is the rotation speed of the valve element 67 of the switching valve 51, and therefore the switching speed [rpHr]
- G and cp is the weight flow rate of one gas [kgr] and the specific heat at constant pressure [kca 1 / kgf. ° C]
- Mr and cr are the total weight of the maturation material 53: kg ⁇ ] and the specific heat.
- Table 1 shows the operating conditions 1 to 4 of the regenerative catalytic combustion device 50.
- the temperature difference is ⁇ ⁇ ⁇ ⁇ -28 ° C.
- Such an operation is shown as operation status 1 in Table 1.
- the present inventor paid attention to the fact that the water exchange ratio WrZWc was changed to change the heat exchange efficiency, and changed the water equivalent ratio Wr / Wc by changing the switching speed n of the switching valve 51.
- the temperature of the organic solvent increased, the heat exchange efficiency was reduced, and the catalyst 54 and the pretreatment material 141 were successfully prevented from being abnormally heated.
- the switching speed n of the switching valve 51 was reduced, and the temperature of the catalyst 54 was reduced to about 55 It has been suppressed to CTC.
- the combustion chamber 57 is provided with temperature detecting means 131 and 132 for detecting the temperature of the purified waste.
- the output of the one temperature detecting means 131 is given to one control circuit 134 of the control means 133, and the output of the control circuit 134 controls the opening / closing operation or flow rate of the flow control valve 129.
- the output of the other temperature detection means 13 2 is given to a control circuit 13 5 provided in the control means 13 3, which controls the rotation speed of the motor 80, Accordingly, the rotation speed of the valve element 67, that is, the switching speed of the switching valve 51 is set to a speed corresponding to the detected temperature.
- a switching valve 51 having the above-described configuration not only the switching valve 51 having the above-described configuration but also a switching valve having another configuration may be used.
- a raft partitioned by the partition plate 55 by an on-off valve It may be a switching valve configured to switch each number of passages. Other configurations may be used.
- the gas to be treated is partially removed in the circumferential direction of the heat storage material. After passing in the axial direction, it is pre-ripened by the chur heat material, burned by the catalyst, and additionally burnt the organic solvent by the wrench. Then, the remaining part in the circumferential direction is further moved in the axial direction by using the catalyst.
- a method is known in which the heat storage material is passed through, heated, and then discharged.
- the temperature after the organic solvent of the gas to be treated is burned by the catalyst is, for example, about
- the passage formed by the partition plate is sequentially switched in the circumferential direction to guide the gas, thereby realizing the regenerative catalytic combustion device.
- the switching operation of the switching valve without moving, it becomes possible to purify the M processing gas containing the organic solvent which is a malodorous substance.
- the switching speed is reduced, and conversely, when the temperature of the space is low, the switching speed is increased.
- the water equivalent ratio Wr / Wc to, for example, less than 5, it becomes possible to greatly change the thermal efficiency in accordance with the switching speed, and thus it is possible to continuously operate for a long time without causing heat loss.
- the switching speed of the switching valve is reduced, and as a result, the water equivalent W of the heat storage material is reduced.
- the ratio Wr / Wc between r and the water contact Wc of the gas to be treated is reduced to reduce the heat exchange efficiency. Therefore, the temperature in the common space can be reduced, and the temperature in the space can be kept below the heat-resistant temperature of the catalyst 53 and the pretreatment material 141, thereby enabling continuous operation.
- the heat exchange efficiency of the ripened material is reduced by the switching valve. It is possible to make a large change according to the switching speed, so that even if the portability of the organic solvent contained in the gas to be treated changes over a wide range, such a gas to be treated can be easily purified. .
- a heating means is provided in the common space, and when the temperature is lower than a predetermined first temperature, for example, less than 300 ° C., the heating temperature is operated to change the gas to be treated. To ensure that the organic solvent is oxidized and burned. If the temperature exceeds the first temperature, the heating means is stopped, and the organic solvent contained in the gas to be treated is purified by self-combustion.
- a predetermined second temperature for example, less than 450 ° C.
- the switching speed of the switching valve is maintained at a predetermined constant value, and at or above the second temperature, the detected temperature of the common space becomes lower. As the temperature increases, the switching speed is reduced to a low value less than the predetermined value, and is kept below the heat resistance, for example, a constant temperature.
- the heating means operates below the first predetermined temperature to heat the organic solvent to assure oxidation decomposition, but above the first temperature, stops the heating means and wastes fuel or power. And at the same time, the rise in the temperature of the space is suppressed. 95/24593 at a constant value, and above the second temperature, as the detected temperature increases, the switching speed decreases to the above-mentioned predetermined value, the value of the non-groove, and thus the temperature of the space decreases the catalyst maturity resistance. To prevent deterioration of the catalyst 53 and the pretreatment material 141.
- the temperature of such a common space is detected by the temperature detecting means, and the control means changes and controls the switching speed of the switching valve, thereby enabling automatic continuous operation. .
- Oxidation recovery temperature and complete decomposition temperature of the odorous substances contained in the gas to be treated supplied from the boiler 61 are different depending on the odorous substances, and especially the odorous substances are ester acetate and tar. Sometimes high temperatures. Therefore, in order to oxidize and decompose these odorous substances, the temperature of the pretreatment material 141 and the catalyst 54 in contact with the gas to be treated must be 250 ° C. or higher, preferably 300 ° C. I need more.
- the catalyst 54 and the pretreatment material 141 which are heated by heat exchange by the gas from the space 57, have a heat exchange effect, and the catalyst 54 and the pretreatment material 141 are compared with the heat storage material 53.
- the catalyst 54 and the pretreatment material 11 are 250, preferably 300 as described above. In order to maintain the temperature at or above C, it is necessary to make the heat transfer element of the catalyst 54 and the pretreatment material 141 small as much as possible and increase the heat transfer element of the maturation material 53.
- the filling amount (Liter) above a certain level with respect to the air flow of the gas to be treated, Of catalyst 5 4 and pretreatment material 1 4 1 Volume velocity of SV (Space 95/24593
- the shape of the pellet in Table 2 is granular as shown in Figure 20 (1), and the shape of the honeycomb is the cross-section of a number of passages through which gas flows, as shown in Figure 20 (2).
- the shape of the foamed metal is a porous shape formed by combining a large number of metal linear bodies.
- the metal may be, for example, iron or another metal.
- a catalyst with a higher S "value, as described above, requires less loading, and therefore has less ripening action, and therefore, from space 57 This is advantageous in that the temperature drop when flowing the purified gas through the catalyst 54 and the pretreatment material 141 is reduced, and the catalyst 54 is formed of a pellet, a honeycomb, or a base having an oval shape formed of a foamed metal. Platinum or para Peretz Bok shape and honeycomb structures having. Catalyst 54 configuration coated with um, for example made of ceramic, to obtain a honeycomb shape can be by connexion produced extrusion.
- the base material having a corrugated shape of the pretreatment material 141 was bent in a zigzag shape.
- 95/24593 refers to a configuration in which a thin plate made of ceramic and a flat plate made of, for example, ceramic are arranged and fixed in their thickness direction.
- the honeycomb shape of the base material of the pretreatment material 141 can be manufactured by, for example, extrusion of ceramics, similarly to the honeycomb shape of the catalyst 54 described above. Can be manufactured.
- the specific heat, specific gravity and heat capacity of each shape of the pretreatment material 141 are as shown in Table 2 above.
- the switching time of the kiln-type combustion device 50 is 30 seconds, that is, each passage 84, 113 to 120 contacts the gas to be treated for 30 seconds, and thereafter, For 30 seconds, it is switched in contact with the gaseous gas from the space 57.
- the heat storage material 53 uses Interlock Saddles (trade name) Intalox Saddles 21 kg.
- the water application ratio W r / W c of the heat storage material 53 is set to 12 and the results of experiments conducted by the present inventors. Are as shown in Table 3.
- the temperature t57 indicates the temperature in the space 57.
- an electric heater is used as a heating means, and the temperature t57 is maintained at 350 ° C.
- the lower temperature tc3 of the pretreatment material 141 is kept at least at least 250, and the temperature of the pretreatment material 141 and the catalyst 54 is maintained.
- the effects were sufficiently achieved in Examples 1, 2 and 3.On the other hand, the temperatures tc 3 of less than 25 CTC were obtained in Comparative Examples 1 and 2.
- Comparative Example 3 That is, in Example 1, the catalyst 54 had a honeycomb-based shape, and the pretreatment material 141 was about 0.1 kca 1 / liter or less as is apparent from Table 2 described above.
- the pretreatment material 141 a base material having a corrugated shape is used. Also touch When the shape of the 5/24593 medium 54 is a foamed metal, the viscosity tc3 is 250 even if the pretreatment material 141 is any of a corrugated shape and a honeycomb shape. We were able to keep it above C.
- FIG. 21 is a simplified cross-sectional view of a regenerative heat exchanger 128 of another embodiment of the present invention.
- 'A switching valve 51 is provided at the lower part of the housing 1 29 storing the heat storage material.
- a switching valve 51 g in which the switching valve 51 is arranged upside down is arranged. It is constructed symmetrically about the symmetry plane 1 3 1.
- the parts corresponding to the switching valve 51 of the switching valve 51 g are indicated by the same reference numerals with the suffix g added.
- the high-temperature gas is supplied from the pipeline 61, is guided into the housing 127, heats the heat storage material 130, matures the heat storage material 130, and is discharged from the connection part 61g.
- the valve bodies 67 and 67 g are synchronously linked, and are integrally driven to rotate by the motors 80 and S 0 g. Gas to be ripened is supplied from the connection port, heated by the heat-stored mature wood 130, and discharged from the connection section 62. Thus, countercurrent heat exchange between high-gas and low-gas is carried out through the maturation material 130.
- the housings 129 are circumferentially partitioned at equal intervals by a partition similarly to the above-described embodiment, and other configurations are the same as those of the above-described embodiment.
- the shaft holes 106 and 106 g, the auxiliary partition walls 110 and 110 g, and the rotating pipe joints 107 and 107 can be omitted.
- the present invention can be implemented not only in conjunction with regenerative catalytic combustion devices and regenerative heat exchangers, but also in a wide variety of other applications.
- the catalyst 54 and the pretreatment material 141 may be omitted. As another embodiment, only the pretreatment material 141 may be omitted.
- the flow directions of the gas to be treated and the clean gas may be opposite to those in the above-described embodiment.
- the Ryu body flowing into each of the pair of chambers formed in the valve box is formed into a passage for each fixed valve hole formed by passage forming means including a partition plate on the fixed valve member side. It is possible to continuously rotate and switch to flow.
- a third moving valve hole is formed on one side along the circumferential direction of the first and second moving valve holes, and a gas between the first and second moving valve holes is formed by a purge gas or the like. Unwanted mixing such as 95/24593 can be prevented.
- a switching member extending in the circumferential direction is provided between the first and second moving valve holes along the circumferential direction so as to close at least one of the fixed valve holes.
- fluid such as gas is smoothly switched to the passage for each fixed valve hole communicating with the first and second moving valve holes, so that a large number of passages are formed in all the passages. Fluid can flow, and an excellent effect of high operation efficiency is achieved.
- the valve element of the switching valve is driven to rotate without moving the bodily heat material, thereby enabling the fluid such as the gas to be treated containing malodorous substances to be removed. Continuous operation becomes possible.
- all the advantages of the rotary regenerative combustion device described with reference to FIGS. 25 and 26 can be fully exhibited, that is, the purge portion is minimized and the configuration is compact.
- the amount of ripening material can be greatly reduced, which also enables the structure to be downsized.
- the configuration of the switching valve is simple, and high-temperature gas does not flow, so that the adverse effect of ripening can be eliminated.
- the present invention it is not necessary to rotationally drive a large-weight heating material, and it is sufficient to rotationally drive a valve body having a stirrer amount, so that the configuration can be simplified, the configuration can be reduced, and the installation cost can be reduced. Can be reduced. The same effect can be obtained when the switching valve is connected to the regenerative heat exchanger.
- the present invention it is possible to prevent the temperature of the pretreatment material for removing the catalyst and the substance that degrades the catalyst from being excessively lowered, and to sufficiently exert the functions of the catalyst and the pretreatment material. Become.
- a communication hole formed of a perforated plate, which is a large number of openings, is provided facing the space in which the heating means is provided, whereby the gas is sufficiently mixed in the space, and
- the purge gas is separated by the partition 55 in the housing 52.
- the partition 55 in the housing 52 since only a single passage 84, 11 13 to 120 can be passed through the passage 95/24593, the remaining passage 84.1 13 to 120 is passed for passage of the gas to be treated.
- the purge gas is supplied to the single passages 84, 113 to 120 as described above, the configuration of the switching valve 51 can be simplified. Further, since the purge gas is supplied only to the single passage 84, 113 to 120, there is also an effect that the required flow rate of the purge gas can be reduced. Further, the purge gas is, for example, clean room-temperature air, and the heat storage material 53 is undesirably formed by forming a single passage 84, 113 to 120 through which the purge gas passes. It is also possible to prevent the temperature from being lowered by cooling.
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Incineration Of Waste (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/545,867 US6000929A (en) | 1994-03-11 | 1995-03-10 | Rotary distribution valve, and regenerative combustion apparatus and regenerative heat exchanger using same |
DE69513901T DE69513901T2 (de) | 1994-03-11 | 1995-03-10 | Umschaltventil, und dieses verwendende regenerative verbrennungsvorrichtung und regenerativer wärmetauscher |
EP95910798A EP0697562B1 (en) | 1994-03-11 | 1995-03-10 | Change-over valve, and regenerative combustion apparatus and regenerative heat exchanger using same |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6/41590 | 1994-03-11 | ||
JP4159094 | 1994-03-11 | ||
JP9770194 | 1994-05-11 | ||
JP6/97701 | 1994-05-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1995024593A1 true WO1995024593A1 (fr) | 1995-09-14 |
Family
ID=26381236
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1995/000409 WO1995024593A1 (fr) | 1994-03-11 | 1995-03-10 | Vanne de permutation, appareil de combustion a recuperation et echangeur de chaleur de recuperation utilisant ce dispositif |
Country Status (4)
Country | Link |
---|---|
US (1) | US6000929A (ja) |
EP (1) | EP0697562B1 (ja) |
DE (1) | DE69513901T2 (ja) |
WO (1) | WO1995024593A1 (ja) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0719984A3 (en) * | 1994-12-27 | 1997-05-14 | Eisenmann Corp | Improved regenerative thermal combustion device |
JPH10238741A (ja) * | 1997-02-27 | 1998-09-08 | Trinity Ind Corp | 触媒燃焼式蓄熱排ガス処理装置 |
JP2001012717A (ja) * | 1999-06-30 | 2001-01-19 | Ngk Insulators Ltd | 燃焼脱臭炉 |
JP2003170024A (ja) * | 2001-12-05 | 2003-06-17 | Babcock Hitachi Kk | 蓄熱式触媒燃焼法による排ガス浄化方法 |
JP2006300399A (ja) * | 2005-04-20 | 2006-11-02 | Kondo Unyu-Kiko Co Ltd | 回転式蓄熱燃焼型脱臭装置 |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5967771A (en) * | 1997-04-01 | 1999-10-19 | Engelhard Corporation | Rotary regenerative oxidizer |
US5871347A (en) * | 1997-04-01 | 1999-02-16 | Engelhard Corporation | Rotary regenerative oxidizer |
US5871349A (en) * | 1997-10-16 | 1999-02-16 | Smith Engineering Company | Rotary valve thermal oxidizer |
FR2783900B1 (fr) * | 1998-09-29 | 2001-01-05 | Pillard Chauffage | Incinerateur thermique regeneratif de composes organiques volatile a travers des lits de materiau |
US6261092B1 (en) | 2000-05-17 | 2001-07-17 | Megtec Systems, Inc. | Switching valve |
MXPA03005172A (es) * | 2000-12-13 | 2003-09-22 | Megtec Sys Inc | Determinacion de requerimientos de combustible complementario y control instantaneo del mismo que involucra oxidacion termica regenerativa. |
US6749815B2 (en) | 2001-05-04 | 2004-06-15 | Megtec Systems, Inc. | Switching valve seal |
US7325562B2 (en) | 2002-05-07 | 2008-02-05 | Meggec Systems, Inc. | Heated seal air for valve and regenerative thermal oxidizer containing same |
US6669472B1 (en) | 2002-08-28 | 2003-12-30 | Megtec Systems, Inc. | Dual lift system |
US7150446B1 (en) | 2002-08-28 | 2006-12-19 | Megtec Systems, Inc. | Dual lift system |
DE102006058696B4 (de) * | 2006-12-13 | 2008-12-18 | Eisenmann Anlagenbau Gmbh & Co. Kg | Vorrichtung zur regenerativen Nachverbrennung von klebrigen Schadstoffpartikeln in Abgas und Verfahren zum Betreiben einer solchen |
KR101030289B1 (ko) * | 2009-09-10 | 2011-04-19 | 한국에너지기술연구원 | 풀타임 축열연소식 단일 라디안트 튜브 버너 |
DE102012218776A1 (de) * | 2012-10-15 | 2014-04-17 | Dürr Systems GmbH | Anlage für das thermische Behandeln von gasförmigem Medium |
CN103574625B (zh) * | 2013-10-11 | 2017-01-25 | 李庆彪 | 催化燃烧炉 |
GB201505421D0 (en) * | 2015-03-30 | 2015-05-13 | Ge Healthcare Bio Sciences Ab | A rotary valve and a chromatography system |
DE102018121199A1 (de) * | 2018-08-30 | 2020-03-05 | Ostfalia Hochschule Für Angewandte Wissenschaften - Hochschule Braunschweig/Wolfenbüttel | Regenerator mit einem intermittierend rotierenden Strömungsschieber |
CN113531568A (zh) * | 2021-07-21 | 2021-10-22 | 安徽工业大学 | 一种旋转式蓄热催化氧化反应器 |
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JPS63180779A (ja) * | 1987-01-21 | 1988-07-25 | Matsushita Refrig Co | 冷凍サイクル用四方弁 |
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GB791222A (en) * | 1954-12-21 | 1958-02-26 | Cie Gen De Constr De Fours | Improvements in heat exchanger apparatus |
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JPS51102278A (en) * | 1975-03-06 | 1976-09-09 | Ikegai Iron Works Ltd | nc kosakukikainogentenfutsukihoho oyobi gentenfutsukisochi |
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DE4301748C2 (de) * | 1993-01-23 | 1995-07-27 | Ltg Lufttechnische Gmbh | Regenerativ-Reaktor |
US5562442A (en) * | 1994-12-27 | 1996-10-08 | Eisenmann Corporation | Regenerative thermal oxidizer |
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- 1995-03-10 EP EP95910798A patent/EP0697562B1/en not_active Expired - Lifetime
- 1995-03-10 WO PCT/JP1995/000409 patent/WO1995024593A1/ja active IP Right Grant
- 1995-03-10 DE DE69513901T patent/DE69513901T2/de not_active Expired - Fee Related
- 1995-03-10 US US08/545,867 patent/US6000929A/en not_active Expired - Fee Related
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JPS51102278U (ja) * | 1976-02-13 | 1976-08-17 | ||
JPS63180779A (ja) * | 1987-01-21 | 1988-07-25 | Matsushita Refrig Co | 冷凍サイクル用四方弁 |
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Title |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0719984A3 (en) * | 1994-12-27 | 1997-05-14 | Eisenmann Corp | Improved regenerative thermal combustion device |
JPH10238741A (ja) * | 1997-02-27 | 1998-09-08 | Trinity Ind Corp | 触媒燃焼式蓄熱排ガス処理装置 |
JP2001012717A (ja) * | 1999-06-30 | 2001-01-19 | Ngk Insulators Ltd | 燃焼脱臭炉 |
JP2003170024A (ja) * | 2001-12-05 | 2003-06-17 | Babcock Hitachi Kk | 蓄熱式触媒燃焼法による排ガス浄化方法 |
JP2006300399A (ja) * | 2005-04-20 | 2006-11-02 | Kondo Unyu-Kiko Co Ltd | 回転式蓄熱燃焼型脱臭装置 |
Also Published As
Publication number | Publication date |
---|---|
DE69513901T2 (de) | 2000-05-31 |
DE69513901D1 (de) | 2000-01-20 |
EP0697562B1 (en) | 1999-12-15 |
EP0697562A4 (en) | 1996-08-14 |
EP0697562A1 (en) | 1996-02-21 |
US6000929A (en) | 1999-12-14 |
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