GB1431377A - Catalytic process - Google Patents

Catalytic process

Info

Publication number
GB1431377A
GB1431377A GB1758272A GB1758272A GB1431377A GB 1431377 A GB1431377 A GB 1431377A GB 1758272 A GB1758272 A GB 1758272A GB 1758272 A GB1758272 A GB 1758272A GB 1431377 A GB1431377 A GB 1431377A
Authority
GB
United Kingdom
Prior art keywords
gas
exhaust gas
engine
ratio
fuel
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
Application number
GB1758272A
Other languages
English (en)
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries 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
Priority to US00171589A priority Critical patent/US3756740A/en
Application filed by Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB1758272A priority patent/GB1431377A/en
Priority to FR7313677A priority patent/FR2181336A5/fr
Priority to IT2307973A priority patent/IT988627B/it
Priority to DE19732319527 priority patent/DE2319527A1/de
Priority to JP7342769A priority patent/JPS4947243A/ja
Publication of GB1431377A publication Critical patent/GB1431377A/en
Expired 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
    • B01D53/9459—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
    • B01D2255/1023—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

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)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Catalysts (AREA)
GB1758272A 1971-08-11 1972-04-17 Catalytic process Expired GB1431377A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US00171589A US3756740A (en) 1971-08-11 1971-08-13 Turbine stage
GB1758272A GB1431377A (en) 1972-04-17 1972-04-17 Catalytic process
FR7313677A FR2181336A5 (enExample) 1972-04-17 1973-04-16
IT2307973A IT988627B (it) 1972-04-17 1973-04-16 Processo catalitico per la elimina zione di ossidi di azoto da gas di scarico di motori a combustione interna
DE19732319527 DE2319527A1 (de) 1972-04-17 1973-04-17 Verfahren zur behandlung der abgase von verbrennungsmotoren
JP7342769A JPS4947243A (enExample) 1972-04-17 1973-04-17

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1758272A GB1431377A (en) 1972-04-17 1972-04-17 Catalytic process

Publications (1)

Publication Number Publication Date
GB1431377A true GB1431377A (en) 1976-04-07

Family

ID=10097697

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1758272A Expired GB1431377A (en) 1971-08-11 1972-04-17 Catalytic process

Country Status (5)

Country Link
JP (1) JPS4947243A (enExample)
DE (1) DE2319527A1 (enExample)
FR (1) FR2181336A5 (enExample)
GB (1) GB1431377A (enExample)
IT (1) IT988627B (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4071600A (en) 1976-12-06 1978-01-31 General Motors Corporation Process for improved 3-way emission control

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1383896A (en) * 1972-06-14 1974-02-12 Grace W R & Co Process of removing noxious components from exhaust gases with the aid of a catalyst
JPS51101780A (enExample) * 1975-03-06 1976-09-08 Nissan Motor
JPS5432167A (en) * 1977-08-15 1979-03-09 Osaka Sanso Kougiyou Kk Gas purification

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4071600A (en) 1976-12-06 1978-01-31 General Motors Corporation Process for improved 3-way emission control

Also Published As

Publication number Publication date
JPS4947243A (enExample) 1974-05-07
FR2181336A5 (enExample) 1973-11-30
IT988627B (it) 1975-04-30
DE2319527A1 (de) 1973-10-31

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees