WO1999056858A3 - Procede et dispositif pour la reduction catalytique des oxydes d'azote - Google Patents

Procede et dispositif pour la reduction catalytique des oxydes d'azote Download PDF

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Publication number
WO1999056858A3
WO1999056858A3 PCT/DE1999/001223 DE9901223W WO9956858A3 WO 1999056858 A3 WO1999056858 A3 WO 1999056858A3 DE 9901223 W DE9901223 W DE 9901223W WO 9956858 A3 WO9956858 A3 WO 9956858A3
Authority
WO
WIPO (PCT)
Prior art keywords
nitrogen oxide
catalytic reduction
urea
ammonia
reacting
Prior art date
Application number
PCT/DE1999/001223
Other languages
German (de)
English (en)
Other versions
WO1999056858A2 (fr
Inventor
Guenther Pajonk
Lothar Hofmann
Manfred Weigl
Gerhard Wissler
Original Assignee
Siemens Ag
Guenther Pajonk
Lothar Hofmann
Manfred Weigl
Gerhard Wissler
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, Guenther Pajonk, Lothar Hofmann, Manfred Weigl, Gerhard Wissler filed Critical Siemens Ag
Publication of WO1999056858A2 publication Critical patent/WO1999056858A2/fr
Publication of WO1999056858A3 publication Critical patent/WO1999056858A3/fr

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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
    • F01N3/2066—Selective catalytic reduction [SCR]
    • 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
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B01D53/8621—Removing nitrogen compounds
    • B01D53/8625—Nitrogen oxides
    • B01D53/8631—Processes characterised by a specific device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/20—Reductants
    • B01D2251/206—Ammonium compounds
    • B01D2251/2067—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
    • F01N2610/02—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
    • F01N2610/12—Adding substances to exhaust gases the substance being in solid form, e.g. pellets or powder
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Environmental & Geological Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Analytical Chemistry (AREA)
  • Biomedical Technology (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Treating Waste Gases (AREA)

Abstract

L'invention concerne un procédé de réduction catalytique des oxydes d'azote contenus dans un courant de gaz d'échappement (4), par réaction avec de l'ammoniac. Par action d'une substance (7), de l'ammoniac est libéré à partir d'urée (11), déjà à des températures inférieures à 200 °C. L'invention concerne également un dispositif correspondant.
PCT/DE1999/001223 1998-04-30 1999-04-23 Procede et dispositif pour la reduction catalytique des oxydes d'azote WO1999056858A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19819523 1998-04-30
DE19819523.0 1998-04-30

Publications (2)

Publication Number Publication Date
WO1999056858A2 WO1999056858A2 (fr) 1999-11-11
WO1999056858A3 true WO1999056858A3 (fr) 2000-01-06

Family

ID=7866403

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1999/001223 WO1999056858A2 (fr) 1998-04-30 1999-04-23 Procede et dispositif pour la reduction catalytique des oxydes d'azote

Country Status (1)

Country Link
WO (1) WO1999056858A2 (fr)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10251472A1 (de) 2002-11-06 2004-05-19 Robert Bosch Gmbh Verfahren zur Nachbehandlung von Abgasen und Anordnung hierzu
DE102004034568A1 (de) * 2004-07-17 2006-02-16 Daimlerchrysler Ag Reduktionsmittelzugabesystem sowie Verfahren zur Aufbereitung und Zugabe eines Reduktionsmittels zu einer Abgasleitung einer Brennkraftmaschine
JP4681284B2 (ja) * 2004-11-18 2011-05-11 日野自動車株式会社 排気浄化装置
EP1989411A1 (fr) * 2006-03-01 2008-11-12 Johnson Matthey Public Limited Company Réacteur pour conversion d'un précurseur d'ammoniac
DE102006023146A1 (de) 2006-05-16 2007-11-22 Emitec Gesellschaft Für Emissionstechnologie Mbh Verfahren und Vorrichtung zum Bereitstellen eines gasförmigen Stoffgemisches
DE102006023147A1 (de) * 2006-05-16 2008-01-10 Emitec Gesellschaft Für Emissionstechnologie Mbh Verfahren und Vorrichtung zum Bereitstellen eines gasförmigen Stoffgemisches
EP1992397B1 (fr) * 2007-05-16 2011-09-07 Amminex A/S Procédé et dispositif de stockage sécurisé et utilisation de matériaux de stockage d'ammoniac volatile
CN101778798A (zh) * 2007-08-24 2010-07-14 鲍尔斯潘公司 用于从尿素生产碳酸铵的方法和装置
DE102009013260A1 (de) * 2009-03-14 2010-09-16 Bayerische Motoren Werke Aktiengesellschaft Vorrichtung zur selektiven katalytischen NOx-Reduktion in sauerstoffhaltigem Abgas
CN102859135B (zh) 2010-03-05 2014-12-31 丰田自动车株式会社 内燃机的排气净化装置
WO2013095214A1 (fr) * 2011-12-23 2013-06-27 Volvo Lastvagnar Ab Système de post-traitement d'échappement et procédé pour le fonctionnement du système
EP2881558B1 (fr) * 2013-12-05 2016-09-14 Inergy Automotive Systems Research (Société Anonyme) Procédé et système pour purifier les gaz d'échappement d'un moteur à combustion
EP2927452B1 (fr) * 2014-04-01 2018-06-13 Plastic Omnium Advanced Innovation and Research Système de décomposition à bord d'un véhicule et son utilisation
EP2926886A1 (fr) * 2014-04-01 2015-10-07 Inergy Automotive Systems Research (Société Anonyme) Système comprenant une unité de décomposition pour utilisation à bord d'un véhicule
EP3194739A1 (fr) * 2014-07-18 2017-07-26 Plastic Omnium Advanced Innovation and Research Système générant de l'ammoniac destiné à être utilisé dans un véhicule
EP2975233B1 (fr) * 2014-07-18 2018-06-06 Plastic Omnium Advanced Innovation and Research Système de génération de précurseur d'ammoniac destiné à être utilisé dans un véhicule
EP3165732A1 (fr) * 2015-11-09 2017-05-10 Plastic Omnium Advanced Innovation and Research Procédé pour activer/désactiver un catalyseur biologique utilisé dans un système de conversion embarqué sur un véhicule
DE102017100246A1 (de) * 2016-11-14 2018-05-17 Eberspächer Exhaust Technology GmbH & Co. KG Reaktionsmittelabgabeanordnung
GB2552040B (en) 2016-12-01 2018-08-01 Univ Loughborough Process for reducing nitrogen oxides
US10683787B2 (en) 2018-11-08 2020-06-16 Faurecia Emissions Control Technologies, Usa, Llc Automotive exhaust aftertreatment system having onboard ammonia reactor with hybrid heating
US10767529B2 (en) 2018-11-08 2020-09-08 Faurecia Emissions Control Technologies, Usa, Llc Automotive exhaust aftertreatment system having onboard ammonia reactor with heated doser
US10876454B2 (en) 2018-11-08 2020-12-29 Faurecia Emissions Control Technologies, Usa, Llc Automotive exhaust aftertreatment system with multi-reductant injection and doser controls
US11193413B2 (en) 2019-12-12 2021-12-07 Faurecia Emissions Control Technologies, Usa, Llc Exhaust aftertreatment system with virtual temperature determination and control
US11319853B2 (en) 2020-03-31 2022-05-03 Faurecia Emissions Control Technologies, Usa, Llc Automotive exhaust aftertreatment system with doser
US11022014B1 (en) 2020-04-28 2021-06-01 Faurecia Emissions Control Technologies, Usa, Llc Exhaust aftertreatment system with heated flash-boiling doser
US11092054B1 (en) 2020-04-29 2021-08-17 Faurecia Emissions Control Technologies, Usa, Llc Flash-boiling doser with thermal transfer helix
US11511239B2 (en) 2020-04-29 2022-11-29 Faurecia Emissions Control Technologies, Usa, Llc Heated flash-boiling doser with integrated helix
US11384667B2 (en) 2020-05-29 2022-07-12 Faurecia Emissions Control Technologies, Usa, Llc Exhaust aftertreatment system with heated dosing control
US11225894B1 (en) 2020-06-30 2022-01-18 Faurecia Emissions Control Technologies, Usa, Llc Exhaust aftertreatment system with thermally controlled reagent doser

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992002291A1 (fr) * 1990-08-01 1992-02-20 Nalco Fuel Tech Gmbh Procede d'hydrolyse de l'uree dans une canalisation
EP0487886A1 (fr) * 1990-11-29 1992-06-03 MAN Nutzfahrzeuge Aktiengesellschaft Procédé et installation pour la réduction catalytique sélective de NOx des gaz d'échappement contenant de l'oxygène
EP0555746A1 (fr) * 1992-02-10 1993-08-18 Man Nutzfahrzeuge Ag Dispositif pour la réduction catalytique de NOx
EP0577853A1 (fr) * 1992-05-08 1994-01-12 Siemens Aktiengesellschaft Dispositif pour la dénitration des gaz d'échappement des moteurs à combustion interne
DE4425420A1 (de) * 1994-07-19 1995-07-27 Daimler Benz Ag Verfahren zur Verminderung des Gehaltes an Stickstoffoxiden in den Abgasen von Verbrennungskraftmaschinen
WO1997036676A1 (fr) * 1996-04-02 1997-10-09 Clean Diesel Technologies, Inc. Procede et appareil de reduction des emissions nocives provenant d'un moteur diesel par reduction catalytique selective (scr) d'injection d'uree
US5693300A (en) * 1990-09-14 1997-12-02 Noxtech, Inc. Process and apparatus for removing NOx from gas streams
US5827490A (en) * 1991-09-27 1998-10-27 Noell, Inc. Method for converting urea to ammonia

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992002291A1 (fr) * 1990-08-01 1992-02-20 Nalco Fuel Tech Gmbh Procede d'hydrolyse de l'uree dans une canalisation
US5693300A (en) * 1990-09-14 1997-12-02 Noxtech, Inc. Process and apparatus for removing NOx from gas streams
EP0487886A1 (fr) * 1990-11-29 1992-06-03 MAN Nutzfahrzeuge Aktiengesellschaft Procédé et installation pour la réduction catalytique sélective de NOx des gaz d'échappement contenant de l'oxygène
US5827490A (en) * 1991-09-27 1998-10-27 Noell, Inc. Method for converting urea to ammonia
EP0555746A1 (fr) * 1992-02-10 1993-08-18 Man Nutzfahrzeuge Ag Dispositif pour la réduction catalytique de NOx
EP0577853A1 (fr) * 1992-05-08 1994-01-12 Siemens Aktiengesellschaft Dispositif pour la dénitration des gaz d'échappement des moteurs à combustion interne
DE4425420A1 (de) * 1994-07-19 1995-07-27 Daimler Benz Ag Verfahren zur Verminderung des Gehaltes an Stickstoffoxiden in den Abgasen von Verbrennungskraftmaschinen
WO1997036676A1 (fr) * 1996-04-02 1997-10-09 Clean Diesel Technologies, Inc. Procede et appareil de reduction des emissions nocives provenant d'un moteur diesel par reduction catalytique selective (scr) d'injection d'uree

Also Published As

Publication number Publication date
WO1999056858A2 (fr) 1999-11-11

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