FR2690358B1 - Process for the reduction of nitrogen oxides in exhaust gases containing oxygen. - Google Patents

Process for the reduction of nitrogen oxides in exhaust gases containing oxygen.

Info

Publication number
FR2690358B1
FR2690358B1 FR9304631A FR9304631A FR2690358B1 FR 2690358 B1 FR2690358 B1 FR 2690358B1 FR 9304631 A FR9304631 A FR 9304631A FR 9304631 A FR9304631 A FR 9304631A FR 2690358 B1 FR2690358 B1 FR 2690358B1
Authority
FR
France
Prior art keywords
reduction
exhaust gases
nitrogen oxides
containing oxygen
gases containing
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.)
Expired - Fee Related
Application number
FR9304631A
Other languages
French (fr)
Other versions
FR2690358A1 (en
Inventor
Axel Konig
Thomas Richter
Werner Weisweiler
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.)
Volkswagen AG
Original Assignee
Volkswagen 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 Volkswagen AG filed Critical Volkswagen AG
Publication of FR2690358A1 publication Critical patent/FR2690358A1/en
Application granted granted Critical
Publication of FR2690358B1 publication Critical patent/FR2690358B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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 ; Methods of operation or control of catalytic converters
    • 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
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/03—Adding substances to exhaust gases the substance being hydrocarbons, e.g. engine fuel
    • 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

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Health & Medical Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Biomedical Technology (AREA)
  • Toxicology (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Catalysts (AREA)
  • Treating Waste Gases (AREA)
FR9304631A 1992-04-25 1993-04-20 Process for the reduction of nitrogen oxides in exhaust gases containing oxygen. Expired - Fee Related FR2690358B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4213649 1992-04-25

Publications (2)

Publication Number Publication Date
FR2690358A1 FR2690358A1 (en) 1993-10-29
FR2690358B1 true FR2690358B1 (en) 1995-01-13

Family

ID=6457471

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9304631A Expired - Fee Related FR2690358B1 (en) 1992-04-25 1993-04-20 Process for the reduction of nitrogen oxides in exhaust gases containing oxygen.

Country Status (2)

Country Link
JP (1) JPH0631137A (en)
FR (1) FR2690358B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4710866B2 (en) * 2007-04-18 2011-06-29 トヨタ自動車株式会社 Exhaust gas purification device for internal combustion engine

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0459396B1 (en) * 1990-05-28 1997-04-16 Agency Of Industrial Science And Technology Process for removing nitrogen oxides from exhaust gases
US5078982A (en) * 1990-09-20 1992-01-07 Molecular Technology Corporation Reduction of nitrogen oxide in effluent gases using formaldehyde
EP0526099B1 (en) * 1991-07-23 1997-10-01 Kabushiki Kaisha Riken Exhaust gas cleaner
US5149511A (en) * 1991-10-07 1992-09-22 Ford Motor Company Method of selectively reducing NOx

Also Published As

Publication number Publication date
JPH0631137A (en) 1994-02-08
FR2690358A1 (en) 1993-10-29

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Legal Events

Date Code Title Description
ST Notification of lapse