[go: up one dir, main page]

CA2375456A1 - Procedes et compositions assurant une reduction des emissions de nox d'un moteur par reduction catalytique selective - Google Patents

Procedes et compositions assurant une reduction des emissions de nox d'un moteur par reduction catalytique selective Download PDF

Info

Publication number
CA2375456A1
CA2375456A1 CA002375456A CA2375456A CA2375456A1 CA 2375456 A1 CA2375456 A1 CA 2375456A1 CA 002375456 A CA002375456 A CA 002375456A CA 2375456 A CA2375456 A CA 2375456A CA 2375456 A1 CA2375456 A1 CA 2375456A1
Authority
CA
Canada
Prior art keywords
reagent
reducing
engine
control
nox
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.)
Abandoned
Application number
CA002375456A
Other languages
English (en)
Inventor
Rodney Howard Banks
Leonard Dubin
Theodore J. Tarabulski
Meijan Linda Lin
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.)
Individual
Original Assignee
Clean Diesel Technologies 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 Clean Diesel Technologies Inc filed Critical Clean Diesel Technologies Inc
Publication of CA2375456A1 publication Critical patent/CA2375456A1/fr
Abandoned legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
    • G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
    • G01N21/64—Fluorescence; Phosphorescence
    • G01N21/6428—Measuring fluorescence of fluorescent products of reactions or of fluorochrome labelled reactive substances, e.g. measuring quenching effects, using measuring "optrodes"
    • G01N21/643—Measuring fluorescence of fluorescent products of reactions or of fluorochrome labelled reactive substances, e.g. measuring quenching effects, using measuring "optrodes" non-biological material
    • 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
    • B01D53/9431—Processes characterised by a specific device
    • 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
    • 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
    • F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus
    • 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]
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/0004—Gaseous mixtures, e.g. polluted air
    • G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
    • G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
    • G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
    • G01N33/0037—NOx
    • 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
    • F01N2550/00—Monitoring or diagnosing the deterioration of exhaust systems
    • F01N2550/05—Systems for adding substances into exhaust
    • 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
    • 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
    • F01N2610/14—Arrangements for the supply of substances, e.g. conduits
    • F01N2610/1473—Overflow or return means for the substances, e.g. conduits or valves for the return path
    • 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
    • F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
    • F01N2900/06—Parameters used for exhaust control or diagnosing
    • F01N2900/18—Parameters used for exhaust control or diagnosing said parameters being related to the system for adding a substance into the exhaust
    • F01N2900/1806—Properties of reducing agent or dosing system
    • 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
    • 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
    • Y02T10/40—Engine management systems

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Analytical Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Immunology (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Pathology (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • General Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Optics & Photonics (AREA)
  • Molecular Biology (AREA)
  • Toxicology (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Treating Waste Gases (AREA)
  • Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)

Abstract

L'invention concerne un système de réduction catalytique sélective fiable permettant de réduire les émissions de NO¿x? d'un moteur (10) thermique à mélange pauvre, lequel système utilise un réactif de marquage chimique pour assurer un usage correct de l'urée ou de tout autre agent (30) de réduction des NO¿x?. Un détecteur (52) de la qualité du réactif permet de détecter le réactif de marquage et d'authentifier le réactif (30) de réduction des NO¿x?. Ce détecteur (52) peut être utilisé, de préférence, pour déterminer la vitesse d'alimentation de manière à assurer une vitesse d'alimentation en agent de réduction des NO¿x? adéquate, et à prévenir ainsi tout sous-dosage ou surdosage. Le détecteur permet également de signaler toute interruption de l'alimentation due au fait que le réservoir soit vide ou que la ligne d'alimentation soit obturée.
CA002375456A 1999-06-09 2000-06-06 Procedes et compositions assurant une reduction des emissions de nox d'un moteur par reduction catalytique selective Abandoned CA2375456A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US32880999A 1999-06-09 1999-06-09
US09/328,809 1999-06-09
PCT/US2000/040111 WO2000075643A1 (fr) 1999-06-09 2000-06-06 Procedes et compositions assurant une reduction des emissions de nox d'un moteur par reduction catalytique selective

Publications (1)

Publication Number Publication Date
CA2375456A1 true CA2375456A1 (fr) 2000-12-14

Family

ID=23282541

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002375456A Abandoned CA2375456A1 (fr) 1999-06-09 2000-06-06 Procedes et compositions assurant une reduction des emissions de nox d'un moteur par reduction catalytique selective

Country Status (5)

Country Link
EP (1) EP1200815A1 (fr)
JP (1) JP2003529011A (fr)
AU (1) AU6402100A (fr)
CA (1) CA2375456A1 (fr)
WO (1) WO2000075643A1 (fr)

Families Citing this family (46)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10139142A1 (de) * 2001-08-09 2003-02-20 Bosch Gmbh Robert Abgasbehandlungseinheit und Messvorrichtung zur Ermittlung einer Konzentration einer Harnstoff-Wasser-Lösung
US6810661B2 (en) 2002-08-09 2004-11-02 Ford Global Technologies, Llc Method and system for freeze protecting liquid NOx reductants for vehicle application
DE10237165B4 (de) 2002-08-14 2015-05-13 Robert Bosch Gmbh Vorrichtung und Verfahren zur Abgasbehandlung einer Verbrennungseinrichtung sowie deren Verwendung
JP3751962B2 (ja) * 2003-09-05 2006-03-08 日産ディーゼル工業株式会社 エンジンの排気浄化装置
JP3718209B2 (ja) * 2003-10-03 2005-11-24 日産ディーゼル工業株式会社 エンジンの排気浄化装置
CN100416054C (zh) * 2003-10-22 2008-09-03 日产柴油机车工业株式会社 发动机控制装置和发动机运转方法
JP4326976B2 (ja) * 2003-10-22 2009-09-09 日産ディーゼル工業株式会社 エンジンの排気浄化装置
US7776265B2 (en) * 2004-03-18 2010-08-17 Cummins Filtration Ip, Inc. System for diagnosing reagent solution quality
ES2366911T3 (es) * 2004-05-13 2011-10-26 Nissan Diesel Motor Co., Ltd. Estructura de recipiente para agente reductor.
JP3687918B1 (ja) 2004-05-13 2005-08-24 日産ディーゼル工業株式会社 還元剤容器の構造
US7067319B2 (en) * 2004-06-24 2006-06-27 Cummins, Inc. System for diagnosing reagent solution quality and emissions catalyst degradation
JP3686668B1 (ja) 2004-10-29 2005-08-24 日産ディーゼル工業株式会社 還元剤容器の構造
JP3686672B1 (ja) 2004-12-24 2005-08-24 日産ディーゼル工業株式会社 エンジンの排気浄化装置
DE102005002318A1 (de) * 2005-01-17 2006-07-27 Robert Bosch Gmbh Abgasnachbehandlungsverfahren und Vorrichtung hierzu
EP1917424B1 (fr) 2005-08-24 2014-03-05 Johnson Matthey PLC Système de marquage
GB0608980D0 (en) * 2006-05-08 2006-06-14 Johnson Matthey Plc Tagging System
JP4799358B2 (ja) * 2006-10-12 2011-10-26 Ｕｄトラックス株式会社 エンジンの排気浄化装置
FR2912932B1 (fr) * 2007-02-23 2011-06-10 Total France Solution aqueuse pour traitement des gaz d'echappement des moteurs diesel
US7930878B2 (en) 2007-02-27 2011-04-26 Ford Global Technologies, Llc Method and apparatus for rapidly thawing frozen NOx reductant
EP2538048B1 (fr) * 2007-03-30 2015-03-04 Continental Automotive Systems US, Inc. Unité de distribution d'agent réducteur pour réduction catalytique sélective
WO2010077188A1 (fr) * 2008-12-29 2010-07-08 Volvo Lastvagnar Ab Dispositif de mesure du niveau d'urée
FR2946750B1 (fr) * 2009-06-12 2011-07-29 Peugeot Citroen Automobiles Sa Procede de controle d'une solution chimique comprenant un agent reducteur.
JP2011094540A (ja) * 2009-10-30 2011-05-12 Toyota Industries Corp 内燃機関における排気ガス浄化装置
DE102009055716A1 (de) * 2009-11-26 2011-06-01 Continental Automotive Gmbh Reduktionsmitteltank mit einem Tankentnahmesystem
GB2476317B (en) * 2009-12-21 2014-02-12 Wema System As Quality sensor apparatus
US9511353B2 (en) 2013-03-15 2016-12-06 Clean Diesel Technologies, Inc. (Cdti) Firing (calcination) process and method related to metallic substrates coated with ZPGM catalyst
US9511350B2 (en) 2013-05-10 2016-12-06 Clean Diesel Technologies, Inc. (Cdti) ZPGM Diesel Oxidation Catalysts and methods of making and using same
US9511355B2 (en) 2013-11-26 2016-12-06 Clean Diesel Technologies, Inc. (Cdti) System and methods for using synergized PGM as a three-way catalyst
US9771534B2 (en) 2013-06-06 2017-09-26 Clean Diesel Technologies, Inc. (Cdti) Diesel exhaust treatment systems and methods
US9545626B2 (en) 2013-07-12 2017-01-17 Clean Diesel Technologies, Inc. Optimization of Zero-PGM washcoat and overcoat loadings on metallic substrate
CN103499671B (zh) * 2013-09-29 2015-07-15 国家电网公司 一种现场测试火电厂scr系统脱硝催化剂活性的方法
US9511358B2 (en) 2013-11-26 2016-12-06 Clean Diesel Technologies, Inc. Spinel compositions and applications thereof
JP5807116B2 (ja) 2014-02-18 2015-11-10 株式会社小松製作所 作業車両及び作業車両用表示装置
WO2015188134A1 (fr) 2014-06-06 2015-12-10 Clean Diesel Technologies, Inc. Catalyseurs à rhodium-fer
US9731279B2 (en) 2014-10-30 2017-08-15 Clean Diesel Technologies, Inc. Thermal stability of copper-manganese spinel as Zero PGM catalyst for TWC application
US9700841B2 (en) 2015-03-13 2017-07-11 Byd Company Limited Synergized PGM close-coupled catalysts for TWC applications
US9951706B2 (en) 2015-04-21 2018-04-24 Clean Diesel Technologies, Inc. Calibration strategies to improve spinel mixed metal oxides catalytic converters
SE541255C2 (en) * 2015-10-28 2019-05-14 Scania Cv Ab Method and system for diagnosing an aftertreatment system
US10533472B2 (en) 2016-05-12 2020-01-14 Cdti Advanced Materials, Inc. Application of synergized-PGM with ultra-low PGM loadings as close-coupled three-way catalysts for internal combustion engines
CN107843688A (zh) * 2016-09-19 2018-03-27 中国石油化工股份有限公司 一种用于尿素水溶液的示踪剂及其应用
CN106526701B (zh) * 2016-11-28 2019-03-26 河南心连心化肥有限公司 硫氰酸铵作为车用尿素示踪剂的添加装置和方法及应用
US9861964B1 (en) 2016-12-13 2018-01-09 Clean Diesel Technologies, Inc. Enhanced catalytic activity at the stoichiometric condition of zero-PGM catalysts for TWC applications
US10265684B2 (en) 2017-05-04 2019-04-23 Cdti Advanced Materials, Inc. Highly active and thermally stable coated gasoline particulate filters
US11732628B1 (en) 2020-08-12 2023-08-22 Old World Industries, Llc Diesel exhaust fluid
FR3137680B1 (fr) 2022-07-07 2025-10-03 Sas Diframa Solution concentrée de préservation de l’intégrité et du bon fonctionnement des dispositifs de post-traitement des gaz d’échappement recourant à l’emploi de l’urée technique en solution.
CN115267041B (zh) * 2022-09-26 2023-01-17 承德建龙特殊钢有限公司 后置式脱硝催化剂生命周期诊断装置及方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5441713A (en) * 1988-04-29 1995-08-15 Nalco Fuel Tech Hardness suppression in urea solutions
US5277135A (en) * 1992-11-23 1994-01-11 Nalco Chemical Company Controlling concentration of chemical treatment for flue gas reduction of the oxides of nitrogen
AU2434597A (en) * 1996-04-02 1997-10-22 Clean Diesel Technologies, Inc. Method and apparatus for reducing harmful emissions from a diesel engine by urea injection scr
US5809774A (en) * 1996-11-19 1998-09-22 Clean Diesel Technologies, Inc. System for fueling and feeding chemicals to internal combustion engines for NOx reduction
US5976475A (en) * 1997-04-02 1999-11-02 Clean Diesel Technologies, Inc. Reducing NOx emissions from an engine by temperature-controlled urea injection for selective catalytic reduction
US6063350A (en) * 1997-04-02 2000-05-16 Clean Diesel Technologies, Inc. Reducing nox emissions from an engine by temperature-controlled urea injection for selective catalytic reduction
US5809775A (en) * 1997-04-02 1998-09-22 Clean Diesel Technologies, Inc. Reducing NOx emissions from an engine by selective catalytic reduction utilizing solid reagents
US5968464A (en) * 1997-05-12 1999-10-19 Clean Diesel Technologies, Inc. Urea pyrolysis chamber and process for reducing lean-burn engine NOx emissions by selective catalytic reduction

Also Published As

Publication number Publication date
EP1200815A1 (fr) 2002-05-02
AU6402100A (en) 2000-12-28
WO2000075643A1 (fr) 2000-12-14
WO2000075643A9 (fr) 2002-08-01
JP2003529011A (ja) 2003-09-30

Similar Documents

Publication Publication Date Title
CA2375456A1 (fr) Procedes et compositions assurant une reduction des emissions de nox d'un moteur par reduction catalytique selective
US6063350A (en) Reducing nox emissions from an engine by temperature-controlled urea injection for selective catalytic reduction
KR100535784B1 (ko) 온도가 조절된 우레아 분사에 의해 엔진으로부터 ＮＯｘ 배출을 감소시키는 방법
US6361754B1 (en) Reducing no emissions from an engine by on-demand generation of ammonia for selective catalytic reduction
US5968464A (en) Urea pyrolysis chamber and process for reducing lean-burn engine NOx emissions by selective catalytic reduction
US5924280A (en) Reducing NOx emissions from an engine while maximizing fuel economy
US5809775A (en) Reducing NOx emissions from an engine by selective catalytic reduction utilizing solid reagents
WO1998028070A1 (fr) Procede et dispositif pour reduire les emissions toxiques d'un moteur a gaz pauvre par reduction catalytique selective a injection d'uree
CN102301104B (zh) 废气净化装置
US6266955B1 (en) Diagnostic system for an emissions control on an engine
US5277135A (en) Controlling concentration of chemical treatment for flue gas reduction of the oxides of nitrogen
KR20040075369A (ko) 산업용 연소 설비를 이용한 폐액의 소각 처리 방법 및혼합 액체
WO1997036676A1 (fr) Procede et appareil de reduction des emissions nocives provenant d'un moteur diesel par reduction catalytique selective (scr) d'injection d'uree
US9395272B2 (en) Method of detecting nitrogen compounds contained in exhaust gases, notably of internal-combustion engines
RU2573547C2 (ru) Система последующей обработки отработавших газов с добавлением активирующего материала в восстановитель, вводимый в каталитический нейтрализатор
DE29825250U1 (de) Verminderung von NOx-Emissionen aus einem Motor durch temperaturgeführte Harnstoffeinspritzung
KR100610926B1 (ko) Ｏｂｄ 임계 촉매 제작용 에이징 장치
US20060198779A1 (en) Selective non-catalytic reduction of NOx
WO1995004211A1 (fr) PROCEDE DE REDUCTION DES EMISSIONS DE NOx DE MOTEURS DIESEL
Rudzki et al. Assessment of Current and Future Air Pollutant Emission Reduction Technologies for Marine Diesel Engines
Tamaldin Experimental Investigation of Emissions from a Light Duty Diesel Engine Utilizing Urea Spray SCR System
Fogarty et al. [3] PI Marine Diesel Engine Lubricant Development–Environmental Impacts

Legal Events

Date Code Title Description
FZDE Discontinued