DK0617199T3 - Katalysator til nitrogenoxid-formindskelse i udstødsgassen fra en forbrændingsmotor - Google Patents

Katalysator til nitrogenoxid-formindskelse i udstødsgassen fra en forbrændingsmotor

Info

Publication number
DK0617199T3
DK0617199T3 DK94103916.6T DK94103916T DK0617199T3 DK 0617199 T3 DK0617199 T3 DK 0617199T3 DK 94103916 T DK94103916 T DK 94103916T DK 0617199 T3 DK0617199 T3 DK 0617199T3
Authority
DK
Denmark
Prior art keywords
internal combustion
catalyst
exhaust gas
combustion engine
ammonia
Prior art date
Application number
DK94103916.6T
Other languages
English (en)
Inventor
Helmut Dr Schmelz
Original Assignee
Siemens Ag
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 Siemens Ag filed Critical Siemens Ag
Application granted granted Critical
Publication of DK0617199T3 publication Critical patent/DK0617199T3/da

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10Exhaust 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
    • F01N3/18Exhaust 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
    • F01N3/20Exhaust 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
    • F01N3/2066Selective catalytic reduction [SCR]
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/92Chemical or biological purification of waste gases of engine exhaust gases
    • B01D53/94Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
    • B01D53/9404Removing only nitrogen compounds
    • B01D53/9409Nitrogen oxides
    • B01D53/9413Processes characterised by a specific catalyst
    • B01D53/9418Processes characterised by a specific catalyst for removing nitrogen oxides by selective catalytic reduction [SCR] using a reducing agent in a lean exhaust gas
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/92Chemical or biological purification of waste gases of engine exhaust gases
    • B01D53/94Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
    • B01D53/9404Removing only nitrogen compounds
    • B01D53/9409Nitrogen oxides
    • B01D53/9431Processes characterised by a specific device
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00Exhaust 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
    • F01N13/009Exhaust 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00Exhaust 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
    • F01N13/009Exhaust 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
    • F01N13/0097Exhaust 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10Exhaust 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
    • F01N3/24Exhaust 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 constructional aspects of converting apparatus
    • F01N3/28Construction of catalytic reactors
    • F01N3/2803Construction of catalytic reactors characterised by structure, by material or by manufacturing of catalyst support
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10Exhaust 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
    • F01N3/24Exhaust 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 constructional aspects of converting apparatus
    • F01N3/28Construction of catalytic reactors
    • F01N3/2803Construction of catalytic reactors characterised by structure, by material or by manufacturing of catalyst support
    • F01N3/2807Metal other than sintered metal
    • F01N3/281Metallic honeycomb monoliths made of stacked or rolled sheets, foils or plates
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10Exhaust 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
    • F01N3/24Exhaust 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 constructional aspects of converting apparatus
    • F01N3/28Construction of catalytic reactors
    • F01N3/2803Construction of catalytic reactors characterised by structure, by material or by manufacturing of catalyst support
    • F01N3/2825Ceramics
    • F01N3/2828Ceramic multi-channel monoliths, e.g. honeycombs
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2251/00Reactants
    • B01D2251/20Reductants
    • B01D2251/206Ammonium compounds
    • B01D2251/2067Urea
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2255/00Catalysts
    • B01D2255/20Metals or compounds thereof
    • B01D2255/207Transition metals
    • B01D2255/20707Titanium
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2255/00Catalysts
    • B01D2255/20Metals or compounds thereof
    • B01D2255/207Transition metals
    • B01D2255/20723Vanadium
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2255/00Catalysts
    • B01D2255/20Metals or compounds thereof
    • B01D2255/207Transition metals
    • B01D2255/20769Molybdenum
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2255/00Catalysts
    • B01D2255/20Metals or compounds thereof
    • B01D2255/207Transition metals
    • B01D2255/20776Tungsten
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2255/00Catalysts
    • B01D2255/90Physical characteristics of catalysts
    • B01D2255/911NH3-storage component incorporated in the catalyst
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2258/00Sources of waste gases
    • B01D2258/01Engine exhaust gases
    • B01D2258/012Diesel engines and lean burn gasoline engines
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2570/00Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
    • F01N2570/14Nitrogen oxides
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2610/00Adding substances to exhaust gases
    • F01N2610/02Adding substances to exhaust gases the substance being ammonia or urea
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B3/00Engines characterised by air compression and subsequent fuel addition
    • F02B3/06Engines characterised by air compression and subsequent fuel addition with compression ignition
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/10Internal combustion engine [ICE] based vehicles
    • Y02T10/12Improving ICE efficiencies

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Biomedical Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Ceramic Engineering (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Catalysts (AREA)
DK94103916.6T 1993-03-26 1994-03-14 Katalysator til nitrogenoxid-formindskelse i udstødsgassen fra en forbrændingsmotor DK0617199T3 (da)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4309891 1993-03-26

Publications (1)

Publication Number Publication Date
DK0617199T3 true DK0617199T3 (da) 1996-07-01

Family

ID=6483953

Family Applications (1)

Application Number Title Priority Date Filing Date
DK94103916.6T DK0617199T3 (da) 1993-03-26 1994-03-14 Katalysator til nitrogenoxid-formindskelse i udstødsgassen fra en forbrændingsmotor

Country Status (7)

Country Link
US (1) US5833932A (da)
EP (1) EP0617199B1 (da)
JP (1) JPH06343877A (da)
AT (1) ATE133752T1 (da)
DE (1) DE59400100D1 (da)
DK (1) DK0617199T3 (da)
ES (1) ES2083301T3 (da)

Families Citing this family (52)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3904493A1 (de) * 1989-02-15 1990-08-16 Deere & Co Antriebsvorrichtung fuer mindestens zwei radpaare
US5943858A (en) * 1995-05-19 1999-08-31 Siemens Aktiengesellschaft Premixing chamber for an exhaust gas purification system
DE19531028A1 (de) * 1995-08-23 1997-02-27 Siemens Ag Verfahren zur Abgasreinigung und Abgas-Reinigungseinrichtung für einen Verbrennungsmotor
DK57996A (da) * 1996-05-15 1997-11-16 Silentor As Lyddæmper
US6399034B1 (en) 1997-05-14 2002-06-04 Hjs Fahrzeugtechnik Gmbh & Co. Process for reducing nitrogen oxides on SCR catalyst
DE19816323C1 (de) * 1998-04-11 1999-10-14 Dornier Gmbh Verfahren zur katalytischen Reduktion von Stickoxiden unter Zugabe von Reduktionsmitteln in motorischen Abgasen
DE19816482C2 (de) * 1998-04-14 2001-11-29 Siemens Ag Plattenkatalysator
JP2001303934A (ja) * 1998-06-23 2001-10-31 Toyota Motor Corp 内燃機関の排気浄化装置
EP1165946B1 (en) * 1998-11-13 2005-10-12 Engelhard Corporation Catalyst and method for reducing exhaust gas emissions
DE19919472C2 (de) * 1999-04-29 2001-04-19 Bosch Gmbh Robert Vorrichtung und Verfahren zur Detektion von Ammoniak
FR2797198B1 (fr) * 1999-08-04 2002-05-03 Tami Ind Membrane pour filtration tangentielle et son procede de fabrication
US6266955B1 (en) 1999-08-20 2001-07-31 Caterpillar Inc. Diagnostic system for an emissions control on an engine
US6314722B1 (en) 1999-10-06 2001-11-13 Matros Technologies, Inc. Method and apparatus for emission control
US6311484B1 (en) 2000-02-22 2001-11-06 Engelhard Corporation System for reducing NOx transient emission
US6919047B1 (en) * 2000-10-10 2005-07-19 Corning Incorporated Reduction of nitrogen oxides in diesel exhaust gases and fuel injection system
US6415602B1 (en) 2000-10-16 2002-07-09 Engelhard Corporation Control system for mobile NOx SCR applications
US6601385B2 (en) * 2001-10-17 2003-08-05 Fleetguard, Inc. Impactor for selective catalytic reduction system
US6449947B1 (en) * 2001-10-17 2002-09-17 Fleetguard, Inc. Low pressure injection and turbulent mixing in selective catalytic reduction system
JP3951774B2 (ja) * 2002-03-29 2007-08-01 三菱ふそうトラック・バス株式会社 内燃機関のNОx浄化装置
US7093427B2 (en) * 2002-11-21 2006-08-22 Ford Global Technologies, Llc Exhaust gas aftertreatment systems
JP4152833B2 (ja) * 2003-07-30 2008-09-17 日産ディーゼル工業株式会社 エンジンの排気浄化装置
US7117669B2 (en) * 2004-05-05 2006-10-10 Eaton Corporation Temperature swing adsorption and selective catalytic reduction NOx removal system
US6996975B2 (en) * 2004-06-25 2006-02-14 Eaton Corporation Multistage reductant injection strategy for slipless, high efficiency selective catalytic reduction
US7213395B2 (en) * 2004-07-14 2007-05-08 Eaton Corporation Hybrid catalyst system for exhaust emissions reduction
US7178328B2 (en) * 2004-12-20 2007-02-20 General Motors Corporation System for controlling the urea supply to SCR catalysts
DE102005017402A1 (de) * 2005-04-15 2006-10-19 Emitec Gesellschaft Für Emissionstechnologie Mbh Verfahren und Vorrichtung zur dosierten Bereitstellung eines, insbesondere als Feststoff vorliegenden, Reduktionsmittels für Abgassysteme
FR2890108B1 (fr) * 2005-08-29 2007-10-05 Peugeot Citroen Automobiles Sa Ligne d'echappement et de purification des gaz d'echappement d'un moteur de vehicule automobile et vehicule comportant une telle ligne
DE102005048117A1 (de) 2005-10-06 2007-04-12 Emitec Gesellschaft Für Emissionstechnologie Mbh Verfahren und Vorrichtung zur Reduktion des Stickoxidanteils im Abgas einer Verbrennungskraftmaschine
JP4432917B2 (ja) 2006-03-06 2010-03-17 トヨタ自動車株式会社 内燃機関の排気浄化装置
US20080202097A1 (en) * 2007-02-28 2008-08-28 Caterpillar Inc. Engine exhaust treatment system
US8209956B2 (en) * 2007-07-31 2012-07-03 Caterpillar Inc. SCR emissions control system
US8001769B2 (en) * 2007-08-20 2011-08-23 Caterpillar Inc. Control of SCR system having a filtering device
US7992380B2 (en) * 2007-08-23 2011-08-09 Caterpillar Inc. Emission control system implementing reduction agent injection
US8713917B2 (en) * 2007-08-30 2014-05-06 GM Global Technology Operations LLC Method for reducing NH3 release from SCR catalysts during thermal transients
US7856807B2 (en) * 2008-03-17 2010-12-28 Cummins Filtration Ip, Inc. Flow reversal chambers for increased residence time
US7613561B1 (en) * 2008-04-24 2009-11-03 Honeywell International Inc Measurement of NO and NO2 for control of selective catalytic reduction
WO2010014217A1 (en) * 2008-07-29 2010-02-04 Rafael Espinoza Pillow panel reactor and process
WO2010131369A1 (ja) * 2009-05-15 2010-11-18 トヨタ自動車株式会社 排出ガス浄化触媒及びその製造方法
DE112010003455T5 (de) * 2009-08-28 2012-07-26 Honda Motor Co., Ltd. Abgasreinigungsvorrichtung für elnen Verbrennungsmotor
US20110064633A1 (en) * 2009-09-14 2011-03-17 Ford Global Technologies, Llc Multi-Functional Catalyst Block and Method of Using the Same
DE102010053751A1 (de) * 2010-10-28 2012-05-03 Oerlikon Trading Ag, Trübbach Molybdänmonoxidschichten und deren Herstellung mittels PVD
DE102013003112B4 (de) * 2013-02-25 2017-06-14 Umicore Ag & Co. Kg SCR-Katalysator mit verbessertem NOx-Umsatz
JP6470734B2 (ja) 2013-03-14 2019-02-13 ビーエーエスエフ コーポレーション 選択的接触還元触媒システム
MX2015011354A (es) 2013-03-14 2016-01-15 Basf Corp Sistema de catalizadores para reduccion catalitica selectiva.
US9797286B2 (en) 2013-10-30 2017-10-24 GM Global Technology Operations LLC SCR filter washcoat thickness efficiency compensation system
US9133747B2 (en) 2013-10-30 2015-09-15 Gm Global Technoogy Operations Llc Selective catalyst reduction filter washcoat thickness ammonia compensation system
US10626772B2 (en) 2014-07-18 2020-04-21 Cummins Inc. SCR exhaust aftertreatment apparatus, system and methods including multiple washcoat formulations
WO2016011366A1 (en) * 2014-07-18 2016-01-21 Cummins Inc. Scr exhaust aftertreatment apparatuses, systems and methods including multiple washcoat formulations
JP7171164B2 (ja) * 2017-04-14 2022-11-15 三菱重工業株式会社 燃焼排ガス処理方法、燃焼排ガス処理装置およびそれのメンテナンス方法
US11426709B2 (en) 2018-08-28 2022-08-30 Umicore Ag & Co. Kg Catalyst for use in the selective catalytic reduction (SCR) of nitrogen oxides
EP3730210A1 (en) * 2019-04-26 2020-10-28 Umicore Ag & Co. Kg Catalyst ceramic candle filter for combined particulate removal and the selective catalytic reduction (scr) of nitrogen-oxides
CN109763883B (zh) * 2019-02-11 2021-03-12 无锡威孚力达催化净化器有限责任公司 一种scr系统氨气泄露的检测方法、装置及系统

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3768982A (en) * 1971-06-22 1973-10-30 Ford Motor Co Catalytic converter with electrically preheated catalyst
IT1070099B (it) * 1975-09-23 1985-03-25 Degussa Catalizzatore supportato monolitico e disposizione di catalizzatori supportati monolitici per la depurazione dei gas di scarico di motori a combustione
GB1586530A (en) * 1977-05-31 1981-03-18 Caterpillar Tractor Co Two-stage catalysts of engine exhaust
JPS5413815A (en) * 1977-07-02 1979-02-01 Nippon Soken Inc Caralytic converter for exhaust gas
US4390355A (en) * 1982-02-02 1983-06-28 General Motors Corporation Wall-flow monolith filter
JPS6118438A (ja) * 1984-07-04 1986-01-27 Toyota Motor Corp モノリス触媒の製造方法
DE8438260U1 (de) * 1984-12-29 1985-04-11 Süddeutsche Kühlerfabrik Julius Fr. Behr GmbH & Co KG, 7000 Stuttgart Traegermatrix, insbesondere fuer einen katalytischen reaktor zur abgasreinigung
DE3531809A1 (de) * 1985-09-06 1987-03-26 Kraftwerk Union Ag Katalysatormaterial zur reduktion von stickoxiden
DE3531810A1 (de) * 1985-09-06 1987-03-19 Kraftwerk Union Ag Katalysatormaterial zur reduktion von stickoxiden
DE3536315A1 (de) * 1985-10-11 1987-04-16 Sueddeutsche Kuehler Behr Katalysatoranordnung zur reinigung von abgasen, insbesondere einer brennkraftmaschine
JPS6318123A (ja) * 1986-07-10 1988-01-26 Fuji Heavy Ind Ltd 触媒コンバ−タ
DE3813312A1 (de) * 1988-04-20 1989-11-02 Siemens Ag Plattenfoermiger katalysator zur verminderung der stickoxide in rauchgasen und verfahren zu seiner herstellung
DE3826137A1 (de) * 1988-08-01 1990-02-08 Siemens Ag Denox-platten-katalysator und verfahren zu seiner herstellung
DE3830045C2 (de) * 1988-09-03 1993-09-30 Bayer Ag Verfahren zur Reduktion von in Abgasen enthaltenen Stickoxiden mittels eines zeolithhaltigen Katalysators
JPH04118053A (ja) * 1989-12-29 1992-04-20 Tokyo Roki Kk エンジンの排気ガス浄化用触媒
JPH03258326A (ja) * 1990-03-07 1991-11-18 Babcock Hitachi Kk 排ガス脱硝装置および排ガス脱硝方法
US5229080A (en) * 1990-06-29 1993-07-20 Ngk Insulators, Ltd. Resistance adjusting type heater and catalytic converter
DE4024942A1 (de) * 1990-08-06 1992-02-13 Emitec Emissionstechnologie Monolithischer metallischer wabenkoerper mit variierender kanalzahl
DE4025174A1 (de) * 1990-08-08 1992-02-13 Siemens Ag Arsenresistenter mischoxidkatalysator und verfahren zu seiner herstellung
US5270277A (en) * 1990-08-08 1993-12-14 Siemens Aktiengesellschaft Arsenic-resistant catalyst and method for producing the same
DE4025587A1 (de) * 1990-08-11 1992-02-13 Basf Ag Verfahren zur herstellung von katalysatoren
DE4032085A1 (de) * 1990-10-10 1992-04-16 Didier Werke Ag Katalysatoranordnung zur reduktion von stickoxiden

Also Published As

Publication number Publication date
EP0617199A1 (de) 1994-09-28
ATE133752T1 (de) 1996-02-15
JPH06343877A (ja) 1994-12-20
EP0617199B1 (de) 1996-01-31
US5833932A (en) 1998-11-10
ES2083301T3 (es) 1996-04-01
DE59400100D1 (de) 1996-03-14

Similar Documents

Publication Publication Date Title
DK0617199T3 (da) Katalysator til nitrogenoxid-formindskelse i udstødsgassen fra en forbrændingsmotor
US7498010B2 (en) Catalytic reduction of NOx
KR100642701B1 (ko) 향상된 NOx 환원을 위한 단계식 환원제 주입
US6293096B1 (en) Multiple stage aftertreatment system
ATE169841T1 (de) Verfahren zur katalytischen umsetzung von im abgas eines verbrennungsmotors enthaltenen stickoxiden
FR2691645B1 (fr) Dispositif de post-traitement de gaz d'échappement pour des gaz d'échappement de moteurs à combustion interne, comportant un catalyseur pour réduction catalytique sélective d'oxydes d'azote.
WO2005047663A3 (en) Emissions treatment system with nsr and scr catalysts
CA2257949A1 (en) Exhaust gas purification apparatus of internal combustion engine and catalyst for purifying exhaust gas of internal combustion engine
KR890007783A (ko) 산화 구리를 사용하는 황화수소 억제용 촉매계
EP1329604A3 (en) Exhaust gas purifying device for internal combustion engine
EP1174598A3 (en) A device for purifying the exhaust gas of an internal combustion engine
ATE311241T1 (de) Katalysatorsystem zur abgasreinigung von dieselmotoren
US4448756A (en) Process for treatment of exhaust gases
EP0886041A3 (en) System for exhaust gas purification
DK0636052T3 (da) Indretning til rensning af afgangsgasser
DE50002798D1 (de) Abgasreinigungsvorrichtung mit NOx-Speicherkatalysator und Vorkatalysator
DE59810361D1 (de) Katalysator und abgasleitung zur reinigung eines abgases aus einem mit luftüberschuss betriebenen verbrennungsmotor
Lambert et al. Application of organic freeze-point depressants in aqueous urea solutions: Effect on NOx reduction
JP2598528Y2 (ja) ディーゼルエンジンの排気浄化装置
JPH0673316U (ja) ディーゼルエンジンの排気浄化装置
KR19980051022A (ko) 바이패스 보조 촉매 변환장치
JPH06229236A (ja) 内燃機関の排気浄化装置
Venkanna et al. S I engine pollution control through low-cost palletized catalytic converter-some observations.
JPH0673313U (ja) ディーゼルエンジンの排気浄化装置
KR960034672A (ko) 린-버언(Lean-burn) 엔진을 가능케 하는 3-베드(bed) 촉매 컨버어터(catalytic converter)