GB1453456A - Converters for purifying exhaust gases - Google Patents
Converters for purifying exhaust gasesInfo
- Publication number
- GB1453456A GB1453456A GB5293773A GB5293773A GB1453456A GB 1453456 A GB1453456 A GB 1453456A GB 5293773 A GB5293773 A GB 5293773A GB 5293773 A GB5293773 A GB 5293773A GB 1453456 A GB1453456 A GB 1453456A
- Authority
- GB
- United Kingdom
- Prior art keywords
- adl
- apl
- aal
- exhaust gas
- ncl
- 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.)
- Expired
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
- B01D53/9404—Removing only nitrogen compounds
- B01D53/9409—Nitrogen oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
- B01D53/9404—Removing only nitrogen compounds
- B01D53/9436—Ammonia
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
- B01D53/9459—Removing one or more of nitrogen oxides, carbon monoxide, or hydrocarbons by multiple successive catalytic functions; systems with more than one different function, e.g. zone coated catalysts
- B01D53/9463—Removing one or more of nitrogen oxides, carbon monoxide, or hydrocarbons by multiple successive catalytic functions; systems with more than one different function, e.g. zone coated catalysts with catalysts positioned on one brick
- B01D53/9468—Removing one or more of nitrogen oxides, carbon monoxide, or hydrocarbons by multiple successive catalytic functions; systems with more than one different function, e.g. zone coated catalysts with catalysts positioned on one brick in different layers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/009—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/009—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series
- F01N13/0097—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series the purifying devices are arranged in a single housing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/10—Noble metals or compounds thereof
- B01D2255/102—Platinum group metals
- B01D2255/1021—Platinum
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/10—Noble metals or compounds thereof
- B01D2255/102—Platinum group metals
- B01D2255/1026—Ruthenium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/207—Transition metals
- B01D2255/20753—Nickel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
- F01N2570/14—Nitrogen oxides
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B1/00—Engines characterised by fuel-air mixture compression
- F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
- F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Biomedical Technology (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Toxicology (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Exhaust Gas After Treatment (AREA)
- Catalysts (AREA)
Abstract
1453456 Catalytic converter for engine exhaust gases TOYOTA CHUO KENKYUSHO KK 14 Nov 1973 [14 Nov 1972] 52937/73 Headings B1E and B1F [Also in Division C1] A converter for use in purifying exhaust gas is comprised of (a) an ammonia-producing producing layer (APL) consisting of a catalyst which reduces nitrogen oxide present in exhaust gas to ammonia, (b) an ammonia-decomposing layer (ADL) consisting of a catalyst which decomposes ammonia to nitrogen and hydrogen and (c) means for directing a flow of exhaust gas, first through the APL and then through the ADL. The converter may also include (d) a nitrogen oxide-converting layer (NCL) consisting of a catalyst which converts nitrogen oxides in the exhaust gas into nitrogen and oxygen, (e) an atmosphere-adjusting layer (AAL) which increases or decreases the oxygen content of the exhaust gas to make it slightly reductive and (f) an oxidising layer (OL) which comprises a catalyst to oxidise inflammable components in the exhaust gas. The exhaust gas may be passed through the various layers in the following combinations: (1) -> APL -> ADL (2) -> NCL -> APL -> ADL (3) -> AAL ->APL -> ADL (4) -> APL -> AAL ->ADL (5) -> OL ->AAL ->APL -> ADL (6) -> OL ->APL -> AAL ->ADL (7) ->AAL ->NCL ->APL ->ADL (8) -> OL ->AAL ->NCL -> APL ->ADL The catalysts used in the various layers include the following: APL-Pt, Pt-Rh, Pd, CoO, reduced material derived from CoO or MnO 2 , etc. ADL-sintered NiO, NiO-MgO-CuO, etc. NCL - sintered NiO-MgO-CuO, etc. AAL - sintered CuO, etc. OL - MnO 2 -CoO, etc. The converter may comprise (a) a cylinder containing a series of porous plates which divide the cylinder into a series of axially-disposed compartments or (b) a series of cylinder pieces equipped with porous end plates linked together end-to-end whereby a multi chamber catalyst converter is formed.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11460472A JPS5518539B2 (en) | 1972-11-14 | 1972-11-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1453456A true GB1453456A (en) | 1976-10-20 |
Family
ID=14641999
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5293773A Expired GB1453456A (en) | 1972-11-14 | 1973-11-14 | Converters for purifying exhaust gases |
Country Status (2)
Country | Link |
---|---|
JP (1) | JPS5518539B2 (en) |
GB (1) | GB1453456A (en) |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2393145A1 (en) * | 1977-05-31 | 1978-12-29 | Caterpillar Tractor Co | CATALYTIC PROCESS AND DEVICE FOR EXHAUST GAS TREATMENT |
EP0701858A1 (en) * | 1994-09-13 | 1996-03-20 | Toyota Jidosha Kabushiki Kaisha | An exhaust gas purification device for an engine |
WO1997017532A1 (en) * | 1995-11-09 | 1997-05-15 | Toyota Jidosha Kabushiki Kaisha | Method and device for purifying exhaust gas of engine |
WO1997019262A1 (en) * | 1995-11-17 | 1997-05-29 | Toyota Jidosha Kabushiki Kaisha | Method and device for purifying exhaust gas of engine |
EP0796983A1 (en) * | 1996-03-22 | 1997-09-24 | Toyota Jidosha Kabushiki Kaisha | Device for purifying exhaust gas of engine |
EP0861972A1 (en) * | 1995-11-17 | 1998-09-02 | Toyota Jidosha Kabushiki Kaisha | Exhaust emission control device for internal combustion engines |
EP0878609A3 (en) * | 1997-05-12 | 2000-03-08 | Toyota Jidosha Kabushiki Kaisha | An exhaust gas purification device for an internal combustion engine |
US6345496B1 (en) | 1995-11-09 | 2002-02-12 | Toyota Jidosha Kabushiki Kaisha | Method and device for purifying exhaust gas of an engine |
FR2839340A1 (en) * | 2002-05-03 | 2003-11-07 | Bosch Gmbh Robert | Internal combustion engine has exhaust gas cleaner that generates fuel with the aid of hydrogen |
WO2007107078A1 (en) | 2006-03-20 | 2007-09-27 | Xiongliang Wu | Exhaust infrared putitying device and its method of diesel engine |
CN113842921A (en) * | 2021-10-27 | 2021-12-28 | 合肥神舟催化净化器股份有限公司 | Ammonia oxidation catalyst for diesel engine based on ternary metal oxide, preparation method and application |
EP4066923A1 (en) | 2021-03-30 | 2022-10-05 | UMICORE AG & Co. KG | Catalyst for the abatement of ammonia from the exhaust of gasoline internal combustion engines |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57192393U (en) * | 1981-05-30 | 1982-12-06 | ||
JP2841411B2 (en) * | 1989-01-27 | 1998-12-24 | 日本鋼管株式会社 | How to get hydrogen from ammonia |
US5783160A (en) * | 1995-01-27 | 1998-07-21 | Toyota Jidosha Kabushiki Kaisha | Method for purifying combustion exhaust gas |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5532891B2 (en) * | 1972-08-25 | 1980-08-27 |
-
1972
- 1972-11-14 JP JP11460472A patent/JPS5518539B2/ja not_active Expired
-
1973
- 1973-11-14 GB GB5293773A patent/GB1453456A/en not_active Expired
Cited By (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2393145A1 (en) * | 1977-05-31 | 1978-12-29 | Caterpillar Tractor Co | CATALYTIC PROCESS AND DEVICE FOR EXHAUST GAS TREATMENT |
US5746052A (en) * | 1994-09-13 | 1998-05-05 | Toyota Jidosha Kabushiki Kaisha | Exhaust gas purification device for an engine |
EP0701858A1 (en) * | 1994-09-13 | 1996-03-20 | Toyota Jidosha Kabushiki Kaisha | An exhaust gas purification device for an engine |
US6345496B1 (en) | 1995-11-09 | 2002-02-12 | Toyota Jidosha Kabushiki Kaisha | Method and device for purifying exhaust gas of an engine |
WO1997017532A1 (en) * | 1995-11-09 | 1997-05-15 | Toyota Jidosha Kabushiki Kaisha | Method and device for purifying exhaust gas of engine |
EP0861972A4 (en) * | 1995-11-17 | 2004-08-04 | Toyota Motor Co Ltd | Exhaust emission control device for internal combustion engines |
WO1997019262A1 (en) * | 1995-11-17 | 1997-05-29 | Toyota Jidosha Kabushiki Kaisha | Method and device for purifying exhaust gas of engine |
EP0861972A1 (en) * | 1995-11-17 | 1998-09-02 | Toyota Jidosha Kabushiki Kaisha | Exhaust emission control device for internal combustion engines |
US6047542A (en) * | 1995-11-17 | 2000-04-11 | Toyota Jidosha Kabushiki Kaisha | Method and device for purifying exhaust gas of engine |
US5964088A (en) * | 1996-03-22 | 1999-10-12 | Toyota Jidosha Kabushiki Kaisha | Device for purifying exhaust gas of engine |
EP0796983A1 (en) * | 1996-03-22 | 1997-09-24 | Toyota Jidosha Kabushiki Kaisha | Device for purifying exhaust gas of engine |
EP0878609A3 (en) * | 1997-05-12 | 2000-03-08 | Toyota Jidosha Kabushiki Kaisha | An exhaust gas purification device for an internal combustion engine |
FR2839340A1 (en) * | 2002-05-03 | 2003-11-07 | Bosch Gmbh Robert | Internal combustion engine has exhaust gas cleaner that generates fuel with the aid of hydrogen |
US6871491B2 (en) | 2002-05-03 | 2005-03-29 | Robert Bosch Gmbh | Combustion system having an emission control device |
WO2007107078A1 (en) | 2006-03-20 | 2007-09-27 | Xiongliang Wu | Exhaust infrared putitying device and its method of diesel engine |
EP2034146A1 (en) * | 2006-03-20 | 2009-03-11 | Wu, Xiongliang | Exhaust infrared putitying device and its method of diesel engine |
EP2034146A4 (en) * | 2006-03-20 | 2010-05-05 | Xiongliang Wu | Exhaust infrared putitying device and its method of diesel engine |
EP4066923A1 (en) | 2021-03-30 | 2022-10-05 | UMICORE AG & Co. KG | Catalyst for the abatement of ammonia from the exhaust of gasoline internal combustion engines |
WO2022207589A1 (en) | 2021-03-30 | 2022-10-06 | Umicore Ag & Co. Kg | Catalyst for the abatement of ammonia from the exhaust of gasoline internal combustion engines |
CN113842921A (en) * | 2021-10-27 | 2021-12-28 | 合肥神舟催化净化器股份有限公司 | Ammonia oxidation catalyst for diesel engine based on ternary metal oxide, preparation method and application |
CN113842921B (en) * | 2021-10-27 | 2023-11-24 | 合肥神舟催化净化器股份有限公司 | Ammonia oxidation catalyst for diesel engine based on ternary metal oxide, preparation method and application |
Also Published As
Publication number | Publication date |
---|---|
JPS5518539B2 (en) | 1980-05-20 |
JPS4971313A (en) | 1974-07-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |