GB1453456A - Converters for purifying exhaust gases - Google Patents

Converters for purifying exhaust gases

Info

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
Application number
GB5293773A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyota Central R&D Labs Inc
Original Assignee
Toyota Central R&D Labs Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toyota Central R&D Labs Inc filed Critical Toyota Central R&D Labs Inc
Publication of GB1453456A publication Critical patent/GB1453456A/en
Expired legal-status Critical Current

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.
GB5293773A 1972-11-14 1973-11-14 Converters for purifying exhaust gases Expired GB1453456A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5532891B2 (en) * 1972-08-25 1980-08-27

Cited By (21)

* Cited by examiner, † Cited by third party
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