CH538598A - Method and reactor for removing nitrogen oxides from oxygen-containing exhaust gases from internal combustion engines - Google Patents

Method and reactor for removing nitrogen oxides from oxygen-containing exhaust gases from internal combustion engines

Info

Publication number
CH538598A
CH538598A CH667172A CH667172A CH538598A CH 538598 A CH538598 A CH 538598A CH 667172 A CH667172 A CH 667172A CH 667172 A CH667172 A CH 667172A CH 538598 A CH538598 A CH 538598A
Authority
CH
Switzerland
Prior art keywords
reactor
oxygen
internal combustion
exhaust gases
nitrogen oxides
Prior art date
Application number
CH667172A
Other languages
German (de)
Inventor
Farmery Keith
Kay Alan
Original Assignee
Ici Ltd
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 Ici Ltd filed Critical Ici Ltd
Publication of CH538598A publication Critical patent/CH538598A/en

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
    • B01D53/9459—Removing one or more of nitrogen oxides, carbon monoxide, or hydrocarbons by multiple successive catalytic functions; systems with more than one different function, e.g. zone coated catalysts
    • 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
    • B01D53/9413—Processes characterised by a specific catalyst
    • 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
    • B01D53/944—Simultaneously removing carbon monoxide, hydrocarbons or carbon making use of oxidation catalysts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/10—Noble metals or compounds thereof
    • B01D2255/102—Platinum group metals
    • B01D2255/1021—Platinum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/10—Noble metals or compounds thereof
    • B01D2255/102—Platinum group metals
    • B01D2255/1023—Palladium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/10—Noble metals or compounds thereof
    • B01D2255/102—Platinum group metals
    • B01D2255/1025—Rhodium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/207—Transition metals
    • B01D2255/20746—Cobalt
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/207—Transition metals
    • B01D2255/20753—Nickel

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (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)
  • Chemical Kinetics & Catalysis (AREA)
  • Catalysts (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
CH667172A 1971-05-07 1972-05-05 Method and reactor for removing nitrogen oxides from oxygen-containing exhaust gases from internal combustion engines CH538598A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1372271A GB1384248A (en) 1971-05-07 1971-05-07 Catalytic process

Publications (1)

Publication Number Publication Date
CH538598A true CH538598A (en) 1973-06-30

Family

ID=10028187

Family Applications (1)

Application Number Title Priority Date Filing Date
CH667172A CH538598A (en) 1971-05-07 1972-05-05 Method and reactor for removing nitrogen oxides from oxygen-containing exhaust gases from internal combustion engines

Country Status (5)

Country Link
CH (1) CH538598A (en)
DE (1) DE2222467A1 (en)
FR (1) FR2137589B1 (en)
GB (1) GB1384248A (en)
ZA (1) ZA723019B (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2460709A1 (en) * 1979-07-09 1981-01-30 Renault Protective device for catalytic purifier in vehicle exhaust system - comprises small auxiliary catalytic reactor installed upstream of purifier
DE3502866A1 (en) * 1984-09-19 1986-03-20 Klaus Prof. Dr.rer.nat. 4430 Steinfurt Mangold Two-stage process and apparatus for purifying combustion gases
US4912776A (en) * 1987-03-23 1990-03-27 W. R. Grace & Co.-Conn. Process for removal of NOx from fluid streams
US5010051A (en) * 1989-11-08 1991-04-23 Engelhard Corporation Staged three-way conversion catalyst and method of using the same
US6087295A (en) * 1992-12-14 2000-07-11 Asec Manufacturing Reduction of NOx in the exhaust gases from internal combustion engines containing excess oxygen
EP0605991A1 (en) * 1993-01-07 1994-07-13 Ford Motor Company Limited Base metal only catalyst system for internal combustion engines
JPH08103656A (en) * 1994-10-06 1996-04-23 N E Chemcat Corp Catalyst for purification of exhaust gas and method therefor
JP4716087B2 (en) 2005-02-18 2011-07-06 トヨタ自動車株式会社 Exhaust gas purification catalyst
CN108671742A (en) * 2017-11-21 2018-10-19 南京钟腾化工有限公司 Normal butane method produces the exhaust treatment system and method for cis-butenedioic anhydride

Also Published As

Publication number Publication date
FR2137589B1 (en) 1975-08-01
GB1384248A (en) 1975-02-19
ZA723019B (en) 1974-01-30
DE2222467A1 (en) 1973-01-11
FR2137589A1 (en) 1972-12-29

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Legal Events

Date Code Title Description
PL Patent ceased