WO1999056858A3 - Method and device for catalytic reduction of nitrogen oxide - Google Patents

Method and device for catalytic reduction of nitrogen oxide Download PDF

Info

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)
French (fr)
Other versions
WO1999056858A2 (en
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/en
Publication of WO1999056858A3 publication Critical patent/WO1999056858A3/en

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
    • 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

Abstract

The invention relates to a method for catalytic reduction of nitrogen oxide in a waste gas flow (4) by reaction with ammonium. Ammonia is released from urea (11) starting at temperatures below 200 °C by reacting a substance (7).
PCT/DE1999/001223 1998-04-30 1999-04-23 Method and device for catalytic reduction of nitrogen oxide WO1999056858A2 (en)

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 (en) 1999-11-11
WO1999056858A3 true WO1999056858A3 (en) 2000-01-06

Family

ID=7866403

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1999/001223 WO1999056858A2 (en) 1998-04-30 1999-04-23 Method and device for catalytic reduction of nitrogen oxide

Country Status (1)

Country Link
WO (1) WO1999056858A2 (en)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10251472A1 (en) * 2002-11-06 2004-05-19 Robert Bosch Gmbh Reduction of automotive nitrous oxide emissions during cold start comprises supplementary injection of ammonia from holding reservoir
DE102004034568A1 (en) * 2004-07-17 2006-02-16 Daimlerchrysler Ag Reductant addition system and method for processing and adding a reducing agent to an exhaust pipe of an internal combustion engine
JP4681284B2 (en) * 2004-11-18 2011-05-11 日野自動車株式会社 Exhaust purification device
EP1989411A1 (en) * 2006-03-01 2008-11-12 Johnson Matthey Public Limited Company Ammonia precursor conversion reactor
DE102006023146A1 (en) 2006-05-16 2007-11-22 Emitec Gesellschaft Für Emissionstechnologie Mbh Method and device for providing a gaseous substance mixture
DE102006023147A1 (en) * 2006-05-16 2008-01-10 Emitec Gesellschaft Für Emissionstechnologie Mbh Method and device for providing a gaseous substance mixture
EP1992397B1 (en) * 2007-05-16 2011-09-07 Amminex A/S Method and device for safe storage and use of volatile ammonia storage materials
CA2697369A1 (en) * 2007-08-24 2009-03-05 Powerspan Corp Method and apparatus for producing ammonium carbonate from urea
DE102009013260A1 (en) * 2009-03-14 2010-09-16 Bayerische Motoren Werke Aktiengesellschaft Device for selective catalytic nitrogen oxide reduction in waste gases containing oxygen, of internal combustion engine of motor vehicle, has heater heating fluid line upstream to injection position up to sediments decomposition temperature
US8677736B2 (en) 2010-03-05 2014-03-25 Toyota Jidosha Kabushiki Kaisha Exhaust gas purification apparatus of an internal combustion engine
WO2013095214A1 (en) * 2011-12-23 2013-06-27 Volvo Lastvagnar Ab Exhaust aftertreatment system and method for operating the system
EP2881558B1 (en) 2013-12-05 2016-09-14 Inergy Automotive Systems Research (Société Anonyme) Method and system for purifying the exhaust gases of a combustion engine
EP2926886A1 (en) * 2014-04-01 2015-10-07 Inergy Automotive Systems Research (Société Anonyme) System comprising a decomposition unit for use on board of a vehicle
EP2927452B1 (en) * 2014-04-01 2018-06-13 Plastic Omnium Advanced Innovation and Research Decomposition system on board of a vehicle and the use thereof
WO2016009083A1 (en) * 2014-07-18 2016-01-21 Plastic Omnium Advanced Innovation And Research S.A. Ammonia generating system for use in a vehicle
EP2975233B1 (en) * 2014-07-18 2018-06-06 Plastic Omnium Advanced Innovation and Research Ammonia precursor generating system for use in a vehicle
EP3165732A1 (en) * 2015-11-09 2017-05-10 Plastic Omnium Advanced Innovation and Research A method for activating/deactivating a biological catalyst used in a conversion system on board a vehicle
DE102017100246A1 (en) * 2016-11-14 2018-05-17 Eberspächer Exhaust Technology GmbH & Co. KG Reagent dispensing assembly
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
US11511239B2 (en) 2020-04-29 2022-11-29 Faurecia Emissions Control Technologies, Usa, Llc Heated flash-boiling doser with integrated helix
US11092054B1 (en) 2020-04-29 2021-08-17 Faurecia Emissions Control Technologies, Usa, Llc Flash-boiling doser with thermal transfer 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 (en) * 1990-08-01 1992-02-20 Nalco Fuel Tech Gmbh Process for the in-line hydrolysis of urea
EP0487886A1 (en) * 1990-11-29 1992-06-03 MAN Nutzfahrzeuge Aktiengesellschaft Process and device for selective catalytic NOx reduction in exhaust gases containing oxygen
EP0555746A1 (en) * 1992-02-10 1993-08-18 Man Nutzfahrzeuge Ag Device for catalytic NOx reduction
EP0577853A1 (en) * 1992-05-08 1994-01-12 Siemens Aktiengesellschaft Denitration device for exhaust gases of internal combustion motors
DE4425420A1 (en) * 1994-07-19 1995-07-27 Daimler Benz Ag Denitrification of engine exhaust gas with ammonia generated as required
WO1997036676A1 (en) * 1996-04-02 1997-10-09 Clean Diesel Technologies, Inc. Method and apparatus for reducing harmful emissions from a diesel engine by urea injection scr
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 (en) * 1990-08-01 1992-02-20 Nalco Fuel Tech Gmbh Process for the in-line hydrolysis of urea
US5693300A (en) * 1990-09-14 1997-12-02 Noxtech, Inc. Process and apparatus for removing NOx from gas streams
EP0487886A1 (en) * 1990-11-29 1992-06-03 MAN Nutzfahrzeuge Aktiengesellschaft Process and device for selective catalytic NOx reduction in exhaust gases containing oxygen
US5827490A (en) * 1991-09-27 1998-10-27 Noell, Inc. Method for converting urea to ammonia
EP0555746A1 (en) * 1992-02-10 1993-08-18 Man Nutzfahrzeuge Ag Device for catalytic NOx reduction
EP0577853A1 (en) * 1992-05-08 1994-01-12 Siemens Aktiengesellschaft Denitration device for exhaust gases of internal combustion motors
DE4425420A1 (en) * 1994-07-19 1995-07-27 Daimler Benz Ag Denitrification of engine exhaust gas with ammonia generated as required
WO1997036676A1 (en) * 1996-04-02 1997-10-09 Clean Diesel Technologies, Inc. Method and apparatus for reducing harmful emissions from a diesel engine by urea injection scr

Also Published As

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

Similar Documents

Publication Publication Date Title
WO1999056858A3 (en) Method and device for catalytic reduction of nitrogen oxide
CA2312652A1 (en) Reduction of toxic substances in waste gas emissions
EP1027919A3 (en) Apparatus and method for treating exhaust gases from a diesel engine using nitrogen oxide absorbent
WO2002072245A3 (en) Selective catalytic reduction of n2o and catalyst therefor
EP0652500A3 (en) A device and method for dosing reagent in a fluid
DK0835160T3 (en) Method and apparatus for catalytic purification of flue gas from a combustion plant
DE50005352D1 (en) DEVICE AND METHOD FOR NICKELING EXHAUST GAS FROM AN INTERNAL COMBUSTION ENGINE
WO1997007876A3 (en) Method and device for decomposing oxides of nitrogen in the exhaust gases from an internal-combustion engine
EP0935055A3 (en) Device for purifying oxygen rich exhaust gas
DK0738179T3 (en) Process for treating a nitric oxide-containing gas using a cerium-containing zeolite
HU911575D0 (en) Process for denitrification of exhaust gases extracting nitric acid by the same process
CA2206236A1 (en) Removal of nitrogen oxides from gas streams
WO1999030811A8 (en) Method for reducing nitrogen oxides in exhaust gases containing oxygen, especially exhaust gases from internal combustion engines
EP1112774A3 (en) Catalyst body
WO2002068096A3 (en) Radial flow gas phase reactor and method for reducing the nitrogen oxide content of a gas
WO2000007699A3 (en) Method and device for removing nitrogen oxides from exhaust gases
KR970058770A (en) Removal method of nitrogen oxide using manganese ore
WO2004096703A3 (en) Ammonia oxidation process
JPS5479160A (en) Denitration method for exhaust gas
GB2272172B (en) Catalyst and catalytic reduction
PL2011559T3 (en) Method of purifying combustion fumes containing nitrogen oxides
DK1194214T3 (en) Method and apparatus for introducing a gaseous reducing agent of a nitric oxide into a gaseous mixture
HU9800244D0 (en) Method and apparatus for regulation of operating-agents feed for reduction of no content of exhaust gas coming from combustion
EP0862939A3 (en) Flue gas treating process and system
DK725588A (en) PROCEDURE FOR THE REMOVAL OF NITROGEN OXIDES FROM WASTE GAS

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A2

Designated state(s): JP KR US

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE

121 Ep: the epo has been informed by wipo that ep was designated in this application
AK Designated states

Kind code of ref document: A3

Designated state(s): JP KR US

AL Designated countries for regional patents

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
NENP Non-entry into the national phase

Ref country code: KR

122 Ep: pct application non-entry in european phase