JP4357742B2 - Ｎｈ３の適切な添加により排ガス中の窒素酸化物含有量を低減させる方法および装置 - Google Patents

Ｎｈ３の適切な添加により排ガス中の窒素酸化物含有量を低減させる方法および装置 Download PDF

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Publication number
JP4357742B2
JP4357742B2 JP2000545633A JP2000545633A JP4357742B2 JP 4357742 B2 JP4357742 B2 JP 4357742B2 JP 2000545633 A JP2000545633 A JP 2000545633A JP 2000545633 A JP2000545633 A JP 2000545633A JP 4357742 B2 JP4357742 B2 JP 4357742B2
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catalyst
ammonia
nox
temperature
preset temperature
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Expired - Lifetime
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JP2000545633A
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Japanese (ja)
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JP2002513110A (ja
JP2002513110A5 (enExample
Inventor
ガイ、リチャード、チャーンドラー
ラジ、ラオ、ラジャラム
クラウス、フリードリッヒ、ゲールスマン
バレリー、アン、セルフ
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Johnson Matthey PLC
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Johnson Matthey PLC
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    • 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
    • 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
    • B01D53/9495—Controlling the catalytic process
    • 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
    • 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
    • F01N3/206—Adding periodically or continuously substances to exhaust gases for promoting purification, e.g. catalytic material in liquid form, NOx reducing agents
    • F01N3/2066—Selective catalytic reduction [SCR]
    • 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
    • F01N2570/18—Ammonia
    • 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
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
    • 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
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Toxicology (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Catalysts (AREA)
JP2000545633A 1998-04-28 1999-04-20 Ｎｈ３の適切な添加により排ガス中の窒素酸化物含有量を低減させる方法および装置 Expired - Lifetime JP4357742B2 (ja)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GBGB9808876.8A GB9808876D0 (en) 1998-04-28 1998-04-28 Combatting air pollution
GB9808876.8 1998-04-28
PCT/GB1999/001205 WO1999055446A1 (en) 1998-04-28 1999-04-20 Process and apparatus for reducing the nitrogen oxide content in exhaust gases by the controlled addition of nh3

Publications (3)

Publication Number Publication Date
JP2002513110A JP2002513110A (ja) 2002-05-08
JP2002513110A5 JP2002513110A5 (enExample) 2006-06-22
JP4357742B2 true JP4357742B2 (ja) 2009-11-04

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JP2000545633A Expired - Lifetime JP4357742B2 (ja) 1998-04-28 1999-04-20 Ｎｈ３の適切な添加により排ガス中の窒素酸化物含有量を低減させる方法および装置

Country Status (12)

Country Link
US (1) US6713030B1 (enExample)
EP (1) EP1083979B1 (enExample)
JP (1) JP4357742B2 (enExample)
KR (1) KR100604131B1 (enExample)
CN (1) CN1201854C (enExample)
AU (1) AU741813B2 (enExample)
CA (1) CA2329994C (enExample)
DE (1) DE69918435T2 (enExample)
GB (1) GB9808876D0 (enExample)
PL (1) PL343689A1 (enExample)
TW (1) TW469163B (enExample)
WO (1) WO1999055446A1 (enExample)

Families Citing this family (59)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001303934A (ja) * 1998-06-23 2001-10-31 Toyota Motor Corp 内燃機関の排気浄化装置
DE10100420A1 (de) * 2001-01-08 2002-07-11 Bosch Gmbh Robert Verfahren und Vorrichtung zur Steuerung eines Abgasnachbehandlungssystems
DE10112444A1 (de) * 2001-03-13 2002-10-02 Krupp Uhde Gmbh Verfahren zur Verringerung des Gehalts von N¶2¶O und NO¶x¶ in Gasen
US6742326B2 (en) 2001-08-09 2004-06-01 Ford Global Technologies, Llc High efficiency conversion of nitrogen oxides in an exhaust aftertreatment device at low temperature
US6698191B2 (en) 2001-08-09 2004-03-02 Ford Global Technologies, Llc High efficiency conversion of nitrogen oxides in an exhaust aftertreatment device at low temperature
US6928359B2 (en) 2001-08-09 2005-08-09 Ford Global Technologies, Llc High efficiency conversion of nitrogen oxides in an exhaust aftertreatment device at low temperature
US7264785B2 (en) 2001-12-20 2007-09-04 Johnson Matthey Public Limited Company Selective catalytic reduction
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
GB0220645D0 (en) 2002-09-05 2002-10-16 Johnson Matthey Plc Exhaust system for a lean burn ic engine
WO2005005797A2 (en) * 2003-06-12 2005-01-20 Donaldson Company, Inc. Method of dispensing fuel into transient flow of an exhaust system
DE102004018648A1 (de) * 2004-04-16 2005-11-10 Hte Ag The High Throughput Experimentation Company Verfahren zur Reduktion von Stickoxiden mit einem Abgasnachbehandlungssystem
US7117669B2 (en) * 2004-05-05 2006-10-10 Eaton Corporation Temperature swing adsorption and selective catalytic reduction NOx removal system
US20050247050A1 (en) * 2004-05-05 2005-11-10 Eaton Corporation Adsorption based ammonia storage and regeneration system
US7213395B2 (en) * 2004-07-14 2007-05-08 Eaton Corporation Hybrid catalyst system for exhaust emissions reduction
JP4267535B2 (ja) 2004-07-23 2009-05-27 日野自動車株式会社 排気浄化装置のＮＯｘ低減率測定方法
US7644577B2 (en) * 2004-10-29 2010-01-12 Philip Morris Usa, Inc. Reducing agent metering system for reducing NOx in lean burn internal combustion engines
WO2006066043A1 (en) * 2004-12-15 2006-06-22 Donaldson Company, Inc. Control for an engine exhaust treatment system
US7178328B2 (en) * 2004-12-20 2007-02-20 General Motors Corporation System for controlling the urea supply to SCR catalysts
US7585490B2 (en) * 2005-04-15 2009-09-08 University Of Iowa Research Foundation Synthesis and use of nanocrystalline zeolites
US8115373B2 (en) 2005-07-06 2012-02-14 Rochester Institute Of Technology Self-regenerating particulate trap systems for emissions and methods thereof
US7485272B2 (en) * 2005-11-30 2009-02-03 Caterpillar Inc. Multi-stage system for selective catalytic reduction
US20100166628A1 (en) 2006-02-15 2010-07-01 Nicola Soeger Catalyst for reducing nitrogen-containing pollutants from the exhaust gases of diesel engines
CN100425325C (zh) * 2006-06-26 2008-10-15 马春强 一种高尘复合scr烟气脱硝工艺及脱硝催化反应装置
JP5082361B2 (ja) 2006-09-27 2012-11-28 東ソー株式会社 ＳＣＲ触媒用β型ゼオライト及びそれを用いた窒素酸化物の浄化方法
ATE500879T1 (de) * 2006-12-23 2011-03-15 Alzchem Trostberg Gmbh Verwendung von wässrigen guanidiniumformiat- lösungen zur selektiven katalytischen reduktion von stickoxiden in abgasen von fahrzeugen
MX2009011443A (es) 2007-04-26 2010-01-18 Johnson Matthey Plc Catalizadores de reduccion catalitica selectiva de metal de transicion/zeolita.
US8001769B2 (en) 2007-08-20 2011-08-23 Caterpillar Inc. Control of SCR system having a filtering device
DE102008010330A1 (de) * 2008-02-21 2009-09-03 Süd-Chemie AG SCR-Katalysator mit Ammoniak-Speicherfunktion
US8141340B2 (en) 2008-04-30 2012-03-27 Cummins Ip, Inc Apparatus, system, and method for determining the degradation of an SCR catalyst
WO2009135071A2 (en) * 2008-04-30 2009-11-05 Cummins Ip, Inc. Apparatus, system, and method for reducing nox emissions from an engine system
US8161730B2 (en) 2008-04-30 2012-04-24 Cummins Ip, Inc. Apparatus, system, and method for reducing NOx emissions on an SCR catalyst
US8181450B2 (en) 2008-04-30 2012-05-22 Cummins IP. Inc. Apparatus, system, and method for reducing NOx emissions on an SCR catalyst using ammonia storage and slip control
US8109079B2 (en) 2008-04-30 2012-02-07 Cummins Ip, Inc. Apparatus, system, and method for controlling ammonia slip from an SCR catalyst
US8256208B2 (en) * 2008-04-30 2012-09-04 Cummins Ip, Inc. Apparatus, system, and method for reducing NOx emissions on an SCR catalyst
US8074445B2 (en) 2008-04-30 2011-12-13 Cummins Ip, Inc. Apparatus, system, and method for reducing NOx emissions on an SCR catalyst
US8505278B2 (en) * 2009-04-30 2013-08-13 Cummins Ip, Inc. Engine system properties controller
US8281572B2 (en) 2008-04-30 2012-10-09 Cummins Ip, Inc. Apparatus, system, and method for reducing NOx emissions from an engine system
US8201394B2 (en) * 2008-04-30 2012-06-19 Cummins Ip, Inc. Apparatus, system, and method for NOx signal correction in feedback controls of an SCR system
DE202009019007U1 (de) * 2008-05-07 2015-04-22 Umicore Ag & Co. Kg SCR-Katalysator zur Verminderung von Stickoxiden in Kohlenwasserstoff-haltigen Abgasen
US8071037B2 (en) * 2008-06-25 2011-12-06 Cummins Filtration Ip, Inc. Catalytic devices for converting urea to ammonia
US7858060B2 (en) * 2008-07-30 2010-12-28 Gm Global Technology Operations, Inc Current storage estimation for selective catalytic reduction catalysts
US8061126B2 (en) * 2008-07-30 2011-11-22 GM Global Technology Operations LLC Nitrogen oxide estimation downstream of a selective catalytic reduction catalyst
WO2010065963A2 (en) 2008-12-05 2010-06-10 Cummins Ip, Inc. Apparatus, system, and method for estimating an nox conversion efficiency of a selective catalytic reduction catalyst
US8356471B2 (en) * 2008-12-05 2013-01-22 Cummins Ip, Inc. Apparatus, system, and method for controlling reductant dosing in an SCR catalyst system
RU2546666C2 (ru) * 2009-04-17 2015-04-10 Джонсон Мэттей Паблик Лимитед Компани Катализаторы восстановления оксидов азота из нанесенной на мелкопористое молекулярное сито меди, стойкие к старению при колебаниях состава бедной/богатой смеси
US8491845B2 (en) * 2009-09-10 2013-07-23 Cummins Ip, Inc. Low temperature selective catalytic reduction catalyst and associated systems and methods
US8671666B2 (en) 2010-03-11 2014-03-18 Cummins Inc. System and apparatus for enhancing exhaust aftertreatment startup emissions control
JP5119289B2 (ja) 2010-04-06 2013-01-16 トヨタ自動車株式会社 内燃機関の排気浄化装置
US8733083B2 (en) 2010-04-26 2014-05-27 Cummins Filtration Ip, Inc. SCR catalyst ammonia surface coverage estimation and control
JP5002040B2 (ja) * 2010-07-07 2012-08-15 トヨタ自動車株式会社 内燃機関の排気浄化装置
US8987161B2 (en) 2010-08-13 2015-03-24 Ut-Battelle, Llc Zeolite-based SCR catalysts and their use in diesel engine emission treatment
CN102266702A (zh) * 2011-06-03 2011-12-07 清华大学 一种捕集工业废气中氨气的方法和设备及其应用
DE102015209988A1 (de) 2014-06-02 2015-12-03 Johnson Matthey Public Limited Company Beschichtete Artikel mit hohen KNOx/KSOx-Verhältnissen für die selektive katalytische Reduktion
KR20180022720A (ko) * 2015-07-03 2018-03-06 할도르 토프쉐 에이/에스 촉매 산화 반응에서 온도 제어를 위한 방법 및 시스템
CN108786457A (zh) * 2017-05-02 2018-11-13 中国石油化工股份有限公司 烟气脱硝方法及脱硝反应器
CN108786439A (zh) * 2017-05-02 2018-11-13 中国石油化工股份有限公司 一种烟气脱硝方法及脱硝反应器
BR112021022142A2 (pt) 2019-05-09 2022-01-04 Cummins Emission Solutions Inc Disposição de válvula para catalisador com acoplamento curto de fluxo dividido
US11732628B1 (en) 2020-08-12 2023-08-22 Old World Industries, Llc Diesel exhaust fluid
WO2024142568A1 (ja) * 2022-12-26 2024-07-04 株式会社クボタ 排気ガス浄化システム

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3825206A1 (de) 1988-07-25 1990-02-01 Degussa Verfahren zur katalytischen entstickung von abgasen mittels eines reduktionsmittels
DE4117143C2 (de) 1991-05-25 1995-04-20 Daimler Benz Ag Verfahren zur selektiven katalytischen Reduktion von Stickoxiden in Abgasen aus Kraftfahrzeugdieselmotoren
DE4217552C1 (enExample) 1992-05-27 1993-08-19 Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De
DE4315278A1 (de) * 1993-05-07 1994-11-10 Siemens Ag Verfahren und Einrichtung zur Dosierung eines Reduktionsmittels in ein stickoxidhaltiges Abgas
JP3568566B2 (ja) 1993-11-24 2004-09-22 バブコック日立株式会社 二酸化窒素と一酸化窒素を含有する排ガス用脱硝装置の使用方法
US5482692A (en) * 1994-07-07 1996-01-09 Mobil Oil Corporation Selective catalytic reduction of nitrogen oxides using a ferrocene impregnated zeolite catalyst
ATE169841T1 (de) 1994-08-10 1998-09-15 Siemens Ag Verfahren zur katalytischen umsetzung von im abgas eines verbrennungsmotors enthaltenen stickoxiden
JPH09133032A (ja) 1995-11-10 1997-05-20 Toyota Motor Corp 内燃機関の排気浄化装置

Also Published As

Publication number Publication date
PL343689A1 (en) 2001-08-27
KR20010043138A (ko) 2001-05-25
JP2002513110A (ja) 2002-05-08
DE69918435T2 (de) 2005-08-18
AU3616499A (en) 1999-11-16
DE69918435D1 (de) 2004-08-05
CN1306455A (zh) 2001-08-01
CA2329994A1 (en) 1999-11-04
CA2329994C (en) 2007-07-10
EP1083979B1 (en) 2004-06-30
US6713030B1 (en) 2004-03-30
EP1083979A1 (en) 2001-03-21
GB9808876D0 (en) 1998-06-24
KR100604131B1 (ko) 2006-07-25
AU741813B2 (en) 2001-12-13
WO1999055446A1 (en) 1999-11-04
CN1201854C (zh) 2005-05-18
TW469163B (en) 2001-12-21

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