JPH0599566A - Boiler SO-2 / CO-2 simultaneous removal device - Google Patents
Boiler SO-2 / CO-2 simultaneous removal deviceInfo
- Publication number
- JPH0599566A JPH0599566A JP3289102A JP28910291A JPH0599566A JP H0599566 A JPH0599566 A JP H0599566A JP 3289102 A JP3289102 A JP 3289102A JP 28910291 A JP28910291 A JP 28910291A JP H0599566 A JPH0599566 A JP H0599566A
- Authority
- JP
- Japan
- Prior art keywords
- furnace
- boiler
- exhaust gas
- heat transfer
- flue
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000809 air pollutant Substances 0.000 abstract description 6
- 231100001243 air pollutant Toxicity 0.000 abstract description 6
- 238000001816 cooling Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 34
- 238000000926 separation method Methods 0.000 description 8
- 238000002485 combustion reaction Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 150000003464 sulfur compounds Chemical class 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/40—Capture or disposal of greenhouse gases of CO2
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/32—Direct CO2 mitigation
Landscapes
- Chimneys And Flues (AREA)
- Treating Waste Gases (AREA)
- Separation By Low-Temperature Treatments (AREA)
Abstract
(57)【要約】
【目的】 大気汚染物質の発生量を削減する。
【構成】 火炉１と後部伝熱部２とを備えたボイラにお
いて、後部伝熱部２出側に接続された煙道８の延設途中
にＳＯ2／ＣＯ2液化設備１３を設け、該ＳＯ2／ＣＯ2液
化設備１３で排ガスを加圧冷却して、ＳＯ2とＣＯ2とを
液化除去することにより、大気汚染物質の発生量を削減
する。
(57) [Summary] [Purpose] To reduce the amount of air pollutants generated. [Structure] In a boiler equipped with a furnace 1 and a rear heat transfer section 2, an SO 2 / CO 2 liquefaction facility 13 is provided in the middle of extension of a flue 8 connected to an outlet side of the rear heat transfer section 2. The amount of air pollutants generated is reduced by liquefying and removing SO 2 and CO 2 by pressure-cooling the exhaust gas in the 2 / CO 2 liquefaction facility 13.
Description
【０００１】[0001]
【産業上の利用分野】本発明は、公害防止に有用なボイ
ラのＳＯ2／ＣＯ2同時除去装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a boiler SO 2 / CO 2 simultaneous removal apparatus useful for pollution prevention.
【０００２】[0002]
【従来の技術】図３は従来の排ガス再循環式ボイラの一
例の概略を表す側面図である。１は火炉、２は後部伝熱
部、３は図示していない押込みファンにより供給される
空気を前記火炉１へ導くための風道である。前記後部伝
熱部２は過熱器４、節炭器５などで形成された熱交換部
６を有し、該熱交換部６の下方で煙突７へ通じる煙道８
と排ガス再循環経路９とに分岐されており、該排ガス再
循環経路９はガス再循環ダクト１０とガス再循環ファン
１１とで構成され、火炉１の下部に風道３を介して接続
している。なお、矢印ａは排ガスの流れ方向を示す。2. Description of the Related Art FIG. 3 is a side view schematically showing an example of a conventional exhaust gas recirculation boiler. Reference numeral 1 is a furnace, 2 is a rear heat transfer section, and 3 is an air passage for guiding air supplied by a pushing fan (not shown) to the furnace 1. The rear heat transfer part 2 has a heat exchange part 6 formed of a superheater 4, a economizer 5, etc., and a flue 8 leading to a chimney 7 below the heat exchange part 6.
And an exhaust gas recirculation route 9 which is composed of a gas recirculation duct 10 and a gas recirculation fan 11 and is connected to the lower part of the furnace 1 via a wind passage 3. There is. The arrow a indicates the flow direction of the exhaust gas.
【０００３】火炉１から後部伝熱部２へ流入した排ガス
は、後部伝熱部２を通過するときに過熱器４において飽
和蒸気を加熱し、節炭器５において給水を予熱するな
ど、熱交換部６において熱交換される。余熱を回収され
た排ガスの一部をガス再循環ファン１１により吸引しガ
ス再循環ダクト１０を介して火炉１内へ再循環させ、火
炎ピーク温度の低下などによりＮＯxの抑制を図り、残
りの排ガスは煙道８を介して煙突７から外部へ排出す
る。Exhaust gas flowing from the furnace 1 into the rear heat transfer section 2 heats saturated steam in the superheater 4 when passing through the rear heat transfer section 2 and preheats feed water in the economizer 5, for example. Heat is exchanged in the part 6. Part of the exhaust gas from which the residual heat is recovered is sucked by the gas recirculation fan 11 and recirculated into the furnace 1 through the gas recirculation duct 10, and NO x is suppressed by reducing the flame peak temperature, etc. The exhaust gas is discharged to the outside from the chimney 7 through the flue 8.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、前述の
排ガス再循環式ボイラでは、燃料中に含まれている硫黄
により、人体に悪影響を与えるばかりではなく酸性雨を
もたらし森林破壊などを引き起す亜硫酸ガス（以下ＳＯ
2と記す）などの硫黄化合物が燃料の燃焼により発生
し、また地球温暖化現象の主因といわれている炭酸ガス
（以下ＣＯ2と記す）なども燃料の燃焼により発生し、
これらの大気を汚染する物質が排ガスに含まれて排出さ
れるため、該大気汚染物質を削減することが急務である
という問題がある。However, in the above-mentioned exhaust gas recirculation type boiler, the sulfur contained in the fuel not only adversely affects the human body but also causes acid rain to cause deforestation, etc. (Hereinafter SO
Sulfur compounds such as 2 ) are generated by the combustion of fuel, and carbon dioxide (hereinafter referred to as CO 2 ) which is said to be the main cause of the global warming phenomenon is also generated by the combustion of the fuel.
Since these substances polluting the atmosphere are contained in exhaust gas and discharged, there is a problem that it is urgent to reduce the air pollutants.
【０００５】本発明は、前述の実情に鑑み、前記大気汚
染物質の発生量を削減し得るボイラのＳＯ2／ＣＯ2同時
除去装置を提供することを目的としてなしたものであ
る。The present invention has been made in view of the above circumstances, and an object thereof is to provide a SO 2 / CO 2 simultaneous removal apparatus for a boiler which can reduce the amount of the air pollutants generated.
【０００６】[0006]
【課題を解決するための手段】請求項１の発明は、火炉
と後部伝熱部とを備えたボイラの前記後部伝熱部のガス
出側に接続された煙道の延設途中にＳＯ2／ＣＯ2液化設
備を設けた構成としている。According to a first aspect of the present invention, SO 2 is provided during extension of a flue connected to a gas outlet side of the rear heat transfer section of a boiler having a furnace and a rear heat transfer section. / CO 2 liquefaction facility is provided.
【０００７】請求項２の発明は、火炉の燃焼用空気入側
に接続された風道の途中に空気中のＯ2を分離して火炉
へ供給可能なＯ2分離設備を設け、前記煙道のＳＯ2／Ｃ
Ｏ2液化設備入側と火炉との間にガス再循環ダクトを接
続した構成としている。According to a second aspect of the present invention, an O 2 separation facility capable of separating O 2 in the air and supplying the separated O 2 to the furnace is provided in the middle of the air passage connected to the combustion air inlet side of the furnace. SO 2 / C
A gas recirculation duct is connected between the inlet side of the O 2 liquefaction facility and the furnace.
【０００８】[0008]
【作用】従って、請求項１の発明では、煙道に設けたＳ
Ｏ2／ＣＯ2液化設備により排ガスを加圧冷却することに
より、排ガス中のＳＯ2とＣＯ2とを液化して排ガス中か
ら分離する。Therefore, according to the first aspect of the invention, the S provided on the flue
By pressurizing and cooling the exhaust gas with the O 2 / CO 2 liquefaction facility, SO 2 and CO 2 in the exhaust gas are liquefied and separated from the exhaust gas.
【０００９】また、請求項２の発明では火炉にＯ2分離
設備でＮ2を除去されたＯ2を供給するのでＮＯxの発生
が防止される。Further, generation of the NO x can be prevented since the supplying O 2 removed the N 2 with O 2 separation equipment to the furnace in the invention of claim 2.
【００１０】[0010]
【実施例】以下、本発明の実施例を図面を参照しつつ説
明する。Embodiments of the present invention will be described below with reference to the drawings.
【００１１】図１は本発明のボイラのＳＯ2／ＣＯ2同時
除去装置の概略を表す側面図、図２は液化ガスの蒸気圧
曲線図である。基本的構成は図３に示す従来の排ガス再
循環式ボイラと略同様であり、図中、図３に示すものと
同じものには同じ符号が付してある。FIG. 1 is a side view showing an outline of the SO 2 / CO 2 simultaneous removal apparatus for a boiler of the present invention, and FIG. 2 is a vapor pressure curve diagram of liquefied gas. The basic structure is substantially the same as that of the conventional exhaust gas recirculation type boiler shown in FIG. 3, and in the figure, the same parts as those shown in FIG.
【００１２】本実施例の煙道８の延設途中には、排ガス
中のＳＯ2とＣＯ2とを分離し別途処理するため、排ガス
を加圧冷却してＳＯ2とＣＯ2とを液化し得るＳＯ2／Ｃ
Ｏ2液化設備１３が設けられている。During the extension of the flue 8 of this embodiment, SO 2 and CO 2 in the exhaust gas are separated and treated separately. Therefore, the exhaust gas is pressurized and cooled to liquefy SO 2 and CO 2. Get SO 2 / C
An O 2 liquefaction facility 13 is provided.
【００１３】また、風道３の延設途中には、空気中の酸
素（以下Ｏ2と記す）を分離して該Ｏ2を火炉１内へ送給
するため、Ｏ2分離設備１２が設けられており、該Ｏ2分
離設備１２と火炉１との間の前記風道３に、排ガスの一
部を火炉１内へ循環させるガス再循環ダクト１０の先端
を接続している。An O 2 separation facility 12 is provided during the extension of the air duct 3 to separate oxygen (hereinafter referred to as O 2 ) in the air and send the O 2 into the furnace 1. The tip of a gas recirculation duct 10 for circulating a part of the exhaust gas into the furnace 1 is connected to the air passage 3 between the O 2 separation facility 12 and the furnace 1.
【００１４】而して、風道３を介してＯ2分離設備１２
に供給される空気を前記Ｏ2分離設備１２で処理するこ
とにより、Ｏ2を分離して火炉１へ送給し、窒素（以下
Ｎ2と記す）などは大気中へ放出する。Thus, the O 2 separation facility 12 is provided through the wind passage 3.
By treating the air supplied to the furnace with the O 2 separation facility 12, O 2 is separated and sent to the furnace 1, and nitrogen (hereinafter referred to as N 2 ) and the like are released into the atmosphere.
【００１５】ガス再循環ファン１１により吸引され、ガ
ス再循環ダクト１０を介して風道３の先端部へ導かれ、
風道３内で前記Ｏ2と混合しつつ火炉１へ供給される一
部の排ガスを除いた他の排ガスは、煙道８を通って煙突
７へ導かれる間に煙道８に設けたＳＯ2／ＣＯ2液化設備
１３で、図２に示す圧力と温度との条件に適合するよう
加圧冷却（例えば、圧力２Ｋｇ／ｃｍ2下では２８０゜
ＫでＳＯ2が液化し、２０５゜ＫでＣＯ2が液化する）さ
れることにより、ＳＯ2とＣＯ2とが液化分離し、これら
の液化分離したＳＯ2、ＣＯ2は投棄などの手段により別
途に処分する。It is sucked by the gas recirculation fan 11 and guided to the tip of the air passage 3 through the gas recirculation duct 10.
Exhaust gas other than a part of the exhaust gas supplied to the furnace 1 while being mixed with the O 2 in the air duct 3 passes through the flue 8 and is guided to the chimney 7. in 2 / CO 2 liquefaction plant 13, pressurized cooling to meet the conditions of pressure and temperature shown in FIG. 2 (e.g., in 2 under pressure 2Kg / cm sO 2 is liquefied at 280 ° K, 205 ° K When CO 2 is liquefied), SO 2 and CO 2 are liquefied and separated, and these liquefied and separated SO 2 and CO 2 are separately disposed by means such as discarding.
【００１６】即ち煙道８を流れる排ガスは、ＳＯ2／Ｃ
Ｏ2液化設備１３を通過することによって大気を汚染す
るＳＯ2やＣＯ2が除去され、従って煙突７よりは極めて
清浄な排ガスが排出され、大気汚染物質の発生量を大幅
に削減できる。That is, the exhaust gas flowing through the flue 8 is SO 2 / C
By passing through the O 2 liquefaction facility 13, SO 2 and CO 2 which pollute the atmosphere are removed, so that an extremely clean exhaust gas is discharged from the chimney 7, and the amount of air pollutants generated can be greatly reduced.
【００１７】なお、本発明は前述の実施例にのみ限定さ
れるものではなく、本発明の要旨を逸脱しない範囲内に
おいて種々変更を加え得ることは勿論である。The present invention is not limited to the above-mentioned embodiments, and it goes without saying that various modifications can be made without departing from the gist of the present invention.
【００１８】[0018]
【発明の効果】本発明のボイラのＳＯ2／ＣＯ2同時除去
装置によれば、煙道の延設途中に設けたＳＯ2／ＣＯ2液
化設備により排ガスを加圧冷却することにより排ガス中
に含まれているＳＯ2とＣＯ2とを液化して分離し得るよ
う形成したので、大気汚染物質の発生量を削減し得て公
害防止に有用であるという優れた効果を奏し得られ、ま
たＯ2分離設備を設けて分離したＯ2を火炉へ送給するよ
う構成することによりＳＯ2／ＣＯ2液化設備の規模を縮
小し且つ所要動力を低減し得る効果を奏し得る。According to the SO 2 / CO 2 simultaneous removal apparatus of the boiler of the present invention, the exhaust gas is pressurized and cooled by the SO 2 / CO 2 liquefaction facility installed in the middle of the extension of the flue gas, so that Since the contained SO 2 and CO 2 were formed so as to be liquefied and separable, it is possible to reduce the amount of generated air pollutants, and to exert an excellent effect of being effective in preventing pollution. By providing a 2 separation facility and feeding the separated O 2 to the furnace, it is possible to reduce the scale of the SO 2 / CO 2 liquefaction facility and reduce the required power.
【図１】本発明のボイラのＳＯ2／ＣＯ2同時除去装置の
概略を表す側面図である。FIG. 1 is a side view showing an outline of a SO 2 / CO 2 simultaneous removal apparatus for a boiler of the present invention.
【図２】図１のボイラのＳＯ2／ＣＯ2同時除去装置に関
連する液化ガスの蒸気圧曲線図である。FIG. 2 is a vapor pressure curve diagram of a liquefied gas related to the SO 2 / CO 2 simultaneous removal apparatus of the boiler of FIG.
【図３】従来の排ガス再循環式ボイラの一例の概略を表
す側面図である。FIG. 3 is a side view schematically showing an example of a conventional exhaust gas recirculation type boiler.
１ 火炉 ２ 後部伝熱部 ３ 風道 ７ 煙突 ８ 煙道 １０ ガス再循環ダクト １１ ガス再循環ファン １２ Ｏ2分離設備 １３ ＳＯ2／ＣＯ2液化設備1 Furnace 2 Rear Heat Transfer Section 3 Airway 7 Chimney 8 Flue 10 Gas Recirculation Duct 11 Gas Recirculation Fan 12 O 2 Separation Equipment 13 SO 2 / CO 2 Liquefaction Equipment
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｆ２３Ｊ 15/00 Ｚ 6850−3Ｋ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 5 Identification code Internal reference number FI Technical display area F23J 15/00 Z 6850-3K
Claims (2)
記後部伝熱部のガス出側に接続された煙道の延設途中に
ＳＯ2／ＣＯ2液化設備を設けたことを特徴とするボイラ
のＳＯ2／ＣＯ2同時除去装置。1. A SO 2 / CO 2 liquefaction facility is provided on the way of extension of a flue connected to a gas outlet side of the rear heat transfer section of a boiler having a furnace and a rear heat transfer section. SO 2 / CO 2 simultaneous removal device for the boiler.
の途中に空気中のＯ2を分離して火炉へ供給可能なＯ2分
離設備を設け、前記煙道のＳＯ2／ＣＯ2液化設備入側と
火炉との間にガス再循環ダクトを接続した請求項１記載
のボイラのＳＯ2／ＣＯ2同時除去装置。 2. An O 2 separation facility capable of separating O 2 in the air and supplying the separated O 2 to the furnace is provided in the middle of the air passage connected to the combustion air inlet side of the furnace, and SO 2 / CO of the flue is provided. The simultaneous SO 2 / CO 2 removal device for a boiler according to claim 1, wherein a gas recirculation duct is connected between the inlet side of the two- liquefaction facility and the furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3289102A JPH0599566A (en) | 1991-10-08 | 1991-10-08 | Boiler SO-2 / CO-2 simultaneous removal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3289102A JPH0599566A (en) | 1991-10-08 | 1991-10-08 | Boiler SO-2 / CO-2 simultaneous removal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0599566A true JPH0599566A (en) | 1993-04-20 |
Family
ID=17738820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3289102A Pending JPH0599566A (en) | 1991-10-08 | 1991-10-08 | Boiler SO-2 / CO-2 simultaneous removal device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0599566A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009005424A1 (en) * | 2007-06-29 | 2009-01-08 | Millicore Ab | Improved pleural drainage device and valve for such |
-
1991
- 1991-10-08 JP JP3289102A patent/JPH0599566A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009005424A1 (en) * | 2007-06-29 | 2009-01-08 | Millicore Ab | Improved pleural drainage device and valve for such |
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