WO2003012007A1 - Apparatus for the pyrolysis of waste material - Google Patents
Apparatus for the pyrolysis of waste material Download PDFInfo
- Publication number
- WO2003012007A1 WO2003012007A1 PCT/GB2002/003514 GB0203514W WO03012007A1 WO 2003012007 A1 WO2003012007 A1 WO 2003012007A1 GB 0203514 W GB0203514 W GB 0203514W WO 03012007 A1 WO03012007 A1 WO 03012007A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- chamber
- pyrolysis
- gases
- waste material
- afterburner
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
- F23G5/14—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion
- F23G5/16—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion in a separate combustion chamber
- F23G5/165—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion in a separate combustion chamber arranged at a different level
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B19/00—Heating of coke ovens by electrical means
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
- F23G5/027—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment pyrolising or gasifying stage
- F23G5/0276—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment pyrolising or gasifying stage using direct heating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
- F23G5/04—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment drying
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2206/00—Waste heat recuperation
- F23G2206/10—Waste heat recuperation reintroducing the heat in the same process, e.g. for predrying
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2900/00—Special features of, or arrangements for incinerators
- F23G2900/00001—Exhaust gas recirculation
-
- 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
- Y02E20/12—Heat utilisation in combustion or incineration of waste
Definitions
- the waste material may be domestic waste material, industrial waste material, natural waste material, or combinations of such materials.
- the different types of apparatus usually have a pyrolysis chamber, and a feed chamber for feeding the waste material to the pyrolysis chamber.
- a generator is usually employed which is for generating electricity and which is run by gases produced from the pyrolysis chamber.
- it is necessary to keep the oxygen level within the pyrolysis chamber below a level that will support the burning of the waste material. It is also necessary to eliminate the possibility of oxygen entering the pyrolysis chamber through the feed chamber.
- the required oxygen level within the pyrolysis chamber and the elimination of the oxygen seeping into the pyrolysis chamber through the feed system are obtained by purging with an inert gas such for example as nitrogen or carbon dioxide.
- the apparatus is often operated into a continuous manner, the amount of inert gas consumed is very substantial. If the inert gas is nitrogen, then a nitrogen plant is usually required on site. If the inert gas is carbon dioxide, then provision needs to be made for the bulk delivery of the required amounts of carbon dioxide. The provision of the inert gas is thus awkward and expensive. Thus, whilst the purging of the apparatus is an important part of the pyrolysis of the waste material, care has to be taken with the purging because the purging costs a substantial amount of money and can render the apparatus uneconomic.
- apparatus for the pyrolysis of waste material which apparatus comprises a pyrolysis chamber, a feed chamber for feeding the waste material to the pyrolysis chamber, a generator which is for generating electricity and which is run by gases produced from the pyrolysis chamber, an afterburner which burns exhaust gases from the generator, and purging means which utilizes the exhaust gases from the afterburner and/or other purging gases and feeds the gases to the feed chamber thereby to prevent unwanted oxygen from the air entering the pyrolysis chamber via the feed chamber.
- the apparatus of the present invention may be one in which the purging means also feeds the exhaust gases from the afterburner to the pyrolysis chamber. This can help to give good control over the required level of oxygen in the pyrolysis chamber, in order to ensure that this level is kept below that which will support the burning of the waste material.
- the purging means may also feed the exhaust gases from the afterburner to a first discharge chamber connected to the pyrolysis chamber. This again may help to reduce the amount of unwanted oxygen from the air within the apparatus.
- the other purging gases may be from additional sources such for example as exhaust gases from engines, turbines, generators or the like. These additional sources may or may not be powered by the apparatus of the present invention.
- the apparatus may include a second discharge chamber which receives gases from the first discharge chamber.
- the purging means comprises a system of conduits and a pump for pumping the exhaust gases from the afterburner along the conduits.
- the apparatus may include drive means which is positioned upstream of the feed chamber and which is for drying the waste material which is fed to the feed chamber.
- the apparatus of the present invention is able to run cheaply and efficiently without the need for the bulk provision of inert gases such for example as the above mentioned on-site nitrogen plant when nitrogen is the inert gas.
- the provision in the apparatus of the present invention of the afterburner and the purging means does not add greatly to the overall expense of the apparatus, and it is appreciably less than providing an on site nitrogen producing plant, or for providing the bulk delivery of carbon dioxide.
- apparatus 2 for the pyrolysis of waste material.
- the apparatus 2 comprises a pyrolysis chamber 4 and a feed chamber 6 for feeding the waste material to the pyrolysis chamber 4.
- a generator 8 is for generating electricity and it is run by gases produced from the pyrolysis chamber 4.
- the apparatus 2 includes an afterburner 10 which burns exhaust gases from the generator 8. These exhaust gases are provided along a conduit 12.
- the apparatus 2 also includes purging means 14 which utilizes the exhaust gases from the afterburner 10 and which feeds these exhaust gases to the feed chamber 6. This prevents unwanted oxygen from the air entering the pyrolysis chamber 4 via the feed chamber 6.
- the purging means 14 receives the exhaust gases from the afterburner 10 via a conduit 16.
- the feed of the exhaust gases from the afterburner 10 to the feed chamber 6 is along a conduit 18.
- the purging means 14 also feeds the exhaust gases from the afterburner 10 to the pyrolysis chamber 4. This is effected via a conduit 20 which branches off from the conduit 18 as shown.
- the purging means 14 also feeds the exhaust gases from the
- the afterburner 10 to a first discharge chamber 22.
- the first discharge chamber 22 is connected to the pyrolysis chamber 4 as shown.
- the feed to the first discharge chamber 22 is effected along a conduit 24 which branches off from the conduit 18 as shown.
- the first discharge chamber 22 is connected to a second discharge chamber 26 as shown.
- the second discharge chamber 26 has an outlet pipe 28 for venting gases to the atmosphere.
- the purging means 14 comprises a pump 30 and a system of conduits including the conduits 16, 18, 20, 24.
- Conduits 32, 34 feed the exhaust gases fed to the feed chamber 6 via the conduit 13, back to the conduit 12 and thus back to the afterburner 10 for further burning prior to further recirculation via the purging means 14.
- Gases from the second discharge chamber 26 are fed via a conduit 36 and the conduit 34 back to the conduit 12 and the afterburner 10.
- the apparatus 2 includes drier means 38 which is positioned upstream of the feed chamber 6 and which is connected to the feed chamber 6 by a conduit 40.
- the drier means 38 dries the waste material which is fed to the feed chamber 6.
- the apparatus 2 is able to operate in an efficient and convenient manner, and also one which is environmentally friendly.
- the apparatus may comprise hopper means for receiving the waste material, a pyrolysis chamber, a main feed auger which drives the waste material from the hopper means in to the pyrolysis chamber, scrubber means for cleaning gases from the apparatus, and purging means for purging the apparatus of air to ensure that the apparatus has insufficient oxygen from the air for the waste material to catch fire in the pyrolysis chamber, the purging means being such that it causes gases from the apparatus to be fed back into the apparatus through the hopper means.
- the apparatus then has insufficient oxygen from the air for the waste material in the pyrolysis chamber to catch fire.
- the gases can be used to dry out the waste material in the hopper means. This improves processing time and it also helps to cool the gases.
- the waste material is able to act as a filter for the gases and is thus able to remove some of the carbon and heavy contaminants from the gases.
- the scrubber means When the gases are then passed to the scrubber means, they are then cleaner than they would have been if they had not been passed through the hopper means. This in turns means that the scrubber means does not need servicing so frequently, and this in turn saves on cleaning fluids and overall maintenance time. It will thus be seen that the apparatus of the second embodiment of the invention provides a considerable number of advantages, all of which can go on together to enable the provision of apparatus which is able to be produced and to run in an economic manner.
- the apparatus may be one in which the hopper means comprises an upper hopper and a lower hopper, and in which the main feed auger drives the waste material from the lower hopper into the pyrolysis chamber.
- the apparatus may be one in which the upper hopper has an upper sealed door and a lower sealed door, and in which the lower sealed door is aligned with an opening in a top part of the lower feed hopper.
- the apparatus may include a first air lock system, the first air lock system being positioned upstream of the hopper means.
- the first air lock system acts to stop unwanted air entering the apparatus through the hopper means.
- the apparatus may include a rake assembly for drawing the waste material across the pyrolysis chamber. Other means for drawing the waste material along the pyrolysis chamber may be employed if desired.
- the pyrolysis chamber is preferably electrically heated. Other means for heating the pyrolysis chamber may be employed. Where the pyrolysis chamber is electrically heated, then this is preferably done by electrically heated ceramic means.
- the apparatus may be one in which heated gases produced in the pyrolysis chamber are removed from the hopper means and/or through the rear of the pyrolysis chamber.
- the apparatus may include a receiving hopper for receiving residual waste material from the pyrolysis chamber.
- the receiving hopper is preferably positioned at a rear end of the processing chamber.
- the apparatus may include a second air lock system, the second air lock system being positioned down stream of the receiving hopper.
- the second air lock system is able to act to prevent air entering the apparatus through the receiving hopper.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Gasification And Melting Of Waste (AREA)
- Incineration Of Waste (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0118760.8 | 2001-08-01 | ||
GB0118760A GB0118760D0 (en) | 2001-08-01 | 2001-08-01 | Apparatus for the pyrolysis of waste material |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003012007A1 true WO2003012007A1 (en) | 2003-02-13 |
Family
ID=9919619
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB2002/003514 WO2003012007A1 (en) | 2001-08-01 | 2002-07-31 | Apparatus for the pyrolysis of waste material |
Country Status (2)
Country | Link |
---|---|
GB (1) | GB0118760D0 (en) |
WO (1) | WO2003012007A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008126040A2 (en) * | 2007-04-12 | 2008-10-23 | Energy & Environment Consulting, S. L. | Method for treating plastics, in particular waste plastics, and use of hydrocarbons coming from the catalytic pyrolysis of said waste plastics |
WO2014016799A2 (en) * | 2012-07-27 | 2014-01-30 | The State Of Israel, Ministry Of Agriculture & Rural Development, Agricultural Research Organization (Aro) (Volcani Center) | Harvester with pyrolysis for bio-fuel crops |
WO2015104400A1 (en) * | 2014-01-10 | 2015-07-16 | Manik Ventures Limited | A pyrolysis chamber for treating domestic refuse and dwelling equipped with such a chamber |
US20230111010A1 (en) * | 2020-03-18 | 2023-04-13 | Co-Energy Ltd. | A system and method for pyrolysis of plastics |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4235676A (en) * | 1977-09-16 | 1980-11-25 | Deco Industries, Inc. | Apparatus for obtaining hydrocarbons from rubber tires and from industrial and residential waste |
US5072675A (en) * | 1991-04-15 | 1991-12-17 | Fowler Benjamin P | Apparatus and method for the destruction of waste |
US5523060A (en) * | 1995-03-21 | 1996-06-04 | Hogan; Jim S. | Apparatus for retorting material |
US6149773A (en) * | 1992-06-09 | 2000-11-21 | Waste Gas Technology Limited | Generation of electricity from waste material |
-
2001
- 2001-08-01 GB GB0118760A patent/GB0118760D0/en not_active Ceased
-
2002
- 2002-07-31 WO PCT/GB2002/003514 patent/WO2003012007A1/en not_active Application Discontinuation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4235676A (en) * | 1977-09-16 | 1980-11-25 | Deco Industries, Inc. | Apparatus for obtaining hydrocarbons from rubber tires and from industrial and residential waste |
US5072675A (en) * | 1991-04-15 | 1991-12-17 | Fowler Benjamin P | Apparatus and method for the destruction of waste |
US6149773A (en) * | 1992-06-09 | 2000-11-21 | Waste Gas Technology Limited | Generation of electricity from waste material |
US5523060A (en) * | 1995-03-21 | 1996-06-04 | Hogan; Jim S. | Apparatus for retorting material |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008126040A2 (en) * | 2007-04-12 | 2008-10-23 | Energy & Environment Consulting, S. L. | Method for treating plastics, in particular waste plastics, and use of hydrocarbons coming from the catalytic pyrolysis of said waste plastics |
WO2008126040A3 (en) * | 2007-04-12 | 2009-01-29 | Energy & Environment Consultin | Method for treating plastics, in particular waste plastics, and use of hydrocarbons coming from the catalytic pyrolysis of said waste plastics |
ES2334293A1 (en) * | 2007-04-12 | 2010-03-08 | ENERGY & ENVIRONMENT CONSULTING, S.L. | Method for treating plastics, in particular waste plastics, and use of hydrocarbons coming from the catalytic pyrolysis of said waste plastics |
ES2334293B1 (en) * | 2007-04-12 | 2011-05-13 | ENERGY & ENVIRONMENT CONSULTING, S.L. | PROCEDURE FOR THE TREATMENT OF PLASTICS, ESPECIALLY OF PLASTIC WASTE, AND USE OF HYDROCARBONS FROM CATALYTIC PIROLISIS OF SUCH PLASTIC RESIDUES. |
WO2014016799A2 (en) * | 2012-07-27 | 2014-01-30 | The State Of Israel, Ministry Of Agriculture & Rural Development, Agricultural Research Organization (Aro) (Volcani Center) | Harvester with pyrolysis for bio-fuel crops |
WO2014016799A3 (en) * | 2012-07-27 | 2014-03-20 | The State Of Israel, Ministry Of Agriculture & Rural Development, Agricultural Research Organization (Aro) (Volcani Center) | Harvester with pyrolysis for bio-fuel crops |
WO2015104400A1 (en) * | 2014-01-10 | 2015-07-16 | Manik Ventures Limited | A pyrolysis chamber for treating domestic refuse and dwelling equipped with such a chamber |
CN106061633A (en) * | 2014-01-10 | 2016-10-26 | 马尼克投资有限公司 | A pyrolysis chamber for treating domestic refuse and dwelling equipped with such a chamber |
EP3124129A1 (en) * | 2014-01-10 | 2017-02-01 | Manik Ventures Limited | Pyrolysis chamber for treating domestic refuse. |
EP3385004A1 (en) * | 2014-01-10 | 2018-10-10 | Manik Ventures Limited | A pyrolysis chamber for treating domestic refuse and dwelling equipped with such a chamber |
CN106061633B (en) * | 2014-01-10 | 2020-02-07 | 马尼克投资有限公司 | Pyrolysis chamber for treating household waste and dwelling equipped with such a chamber |
US11485912B2 (en) | 2014-01-10 | 2022-11-01 | Manik Ventures Limited | Disposal of refuse |
US20230111010A1 (en) * | 2020-03-18 | 2023-04-13 | Co-Energy Ltd. | A system and method for pyrolysis of plastics |
US12234409B2 (en) * | 2020-03-18 | 2025-02-25 | Co-Energy Ltd. | System and method for pyrolysis of plastics |
Also Published As
Publication number | Publication date |
---|---|
GB0118760D0 (en) | 2001-09-26 |
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