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SE7711247L - PROCEDURE FOR EXHAUST - Google Patents

PROCEDURE FOR EXHAUST

Info

Publication number
SE7711247L
SE7711247L SE7711247A SE7711247A SE7711247L SE 7711247 L SE7711247 L SE 7711247L SE 7711247 A SE7711247 A SE 7711247A SE 7711247 A SE7711247 A SE 7711247A SE 7711247 L SE7711247 L SE 7711247L
Authority
SE
Sweden
Prior art keywords
catalyst
exhaust gases
hydrocarbon
catalyst zone
carbon monoxide
Prior art date
Application number
SE7711247A
Other languages
Swedish (sv)
Inventor
J G Hansel
J J Mooney
Original Assignee
Engelhard Min & Chem
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 Engelhard Min & Chem filed Critical Engelhard Min & Chem
Publication of SE7711247L publication Critical patent/SE7711247L/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
    • F01N3/22—Control of additional air supply only, e.g. using by-passes or variable air pump drives
    • F01N3/222—Control of additional air supply only, e.g. using by-passes or variable air pump drives using electric valves only
    • 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
    • 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
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/009—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series
    • 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
    • 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
    • F01N3/22—Control of additional air supply only, e.g. using by-passes or variable air pump drives
    • 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
    • F01N3/24—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 constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • F01N3/2803—Construction of catalytic reactors characterised by structure, by material or by manufacturing of catalyst support
    • F01N3/2825—Ceramics
    • F01N3/2828—Ceramic multi-channel monoliths, e.g. honeycombs
    • 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
    • F01N3/24—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 constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • F01N3/2803—Construction of catalytic reactors characterised by structure, by material or by manufacturing of catalyst support
    • F01N3/2832—Construction of catalytic reactors characterised by structure, by material or by manufacturing of catalyst support granular, e.g. pellets
    • 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
    • F01N2330/00—Structure of catalyst support or particle filter
    • F01N2330/06—Ceramic, e.g. monoliths
    • 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
    • F01N2330/00—Structure of catalyst support or particle filter
    • F01N2330/08—Granular material
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Landscapes

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

Abstract

PROCESS Exhaust gases from two-stroke (two-cycle) internal combustion engines which contain relatively high concentrations of carbon monoxide and hydrocarbon are catalytically treated to purify the exhaust gases and thus decrease pollution of the atmosphere. The catalytic treatment is conducted such that the relatively high concentrations of carbon monoxide and hydrocarbon in the exhaust gases can be reduced without deleteriously affecting the catalyst. The exhaust gases are passed to a first catalyst zone which contains insufficient catalyst for complete combustion of the carbon monoxide and hydrocarbon, and the first catalyst zone does not reach temperatures which are deleterious to the catalyst. The effluent from the first catalyst zone contains combustible values and is cooled and passed to a second catalyst zone, said cooling being sufficient to avoid reaching temperatures in the second catalyst zone which are deleterious to the catalyst.
SE7711247A 1976-10-07 1977-10-06 PROCEDURE FOR EXHAUST SE7711247L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US73047176A 1976-10-07 1976-10-07

Publications (1)

Publication Number Publication Date
SE7711247L true SE7711247L (en) 1978-04-08

Family

ID=24935501

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7711247A SE7711247L (en) 1976-10-07 1977-10-06 PROCEDURE FOR EXHAUST

Country Status (13)

Country Link
JP (1) JPS5346515A (en)
AR (1) AR212664A1 (en)
AU (1) AU518302B2 (en)
BE (1) BE859454A (en)
BR (1) BR7706619A (en)
CA (1) CA1101638A (en)
DD (1) DD133058A5 (en)
DE (1) DE2745013A1 (en)
ES (2) ES462971A1 (en)
FR (1) FR2367188A1 (en)
GB (1) GB1584998A (en)
PL (1) PL201333A1 (en)
SE (1) SE7711247L (en)

Families Citing this family (11)

* 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
US4373452A (en) 1980-07-28 1983-02-15 Corning Glass Works Wood burning stove
USRE33077E (en) * 1980-07-28 1989-10-03 Corning Glass Works Wood burning stove
JPS5890452A (en) * 1981-11-18 1983-05-30 Nippon Seiko Kk Grinding method and grinder using whetstone wheel
JP2736099B2 (en) * 1989-02-06 1998-04-02 株式会社日本触媒 Diesel engine exhaust gas purification catalyst
DE3904550A1 (en) * 1989-02-15 1990-08-16 Siemens Ag CATALYST MOLDED BODY FOR A FLOWING LIQUID OR GASEOUS MEDIUM
US5894068A (en) * 1992-12-14 1999-04-13 Kharas; Karl C. C. Reduction of NOx in the exhaust gases from internal combustion engines containing excess oxygen
US6087295A (en) 1992-12-14 2000-07-11 Asec Manufacturing Reduction of NOx in the exhaust gases from internal combustion engines containing excess oxygen
JP2904431B2 (en) * 1993-03-26 1999-06-14 日本碍子株式会社 Exhaust gas purification equipment
DE19904314A1 (en) * 1999-01-28 2000-08-17 Porsche Ag Exhaust gas purifying device has a catalyst arrangement consisting of a main catalyst and several pre-catalysts arranged relatively near to the cylinder head
FR2827908B1 (en) * 2001-07-26 2004-02-13 Peugeot Motocycles Sa SYSTEM FOR PURIFYING EXHAUST GASES FROM A TWO-STROKE HEAT ENGINE, PARTICULARLY FOR A TWO-WHEELED VEHICLE

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE497441A (en) * 1949-08-09
DE1542112A1 (en) * 1963-02-07 1972-02-24 Engelhard Ind Inc Process for the catalytic conversion of gaseous reactants
DE1235666B (en) * 1963-04-03 1967-03-02 Auto Union Gmbh Device for cleaning exhaust gases from internal combustion engines
FR1438944A (en) * 1965-07-07 1966-05-13 Method and apparatus for the suppression of the toxicity of the exhaust gases of internal combustion engines and the removal of the foul-smelling components contained therein
DE1476627A1 (en) * 1966-06-10 1970-04-09 Veit Dr Ing Theodor Method and device for cleaning gases and sound insulation, in particular for exhaust gases from internal combustion engines
US3599427A (en) * 1969-09-22 1971-08-17 Ford Motor Co Exhaust gas purification
JPS4832764A (en) * 1971-08-30 1973-05-02
US3791143A (en) * 1971-11-10 1974-02-12 Engelhard Min & Chem Process and apparatus
US3896616A (en) * 1972-04-21 1975-07-29 Engelhard Min & Chem Process and apparatus
IN141845B (en) * 1973-09-26 1977-04-23 Engelhard Min & Chem
JPS5073022A (en) * 1973-11-02 1975-06-17

Also Published As

Publication number Publication date
ES462971A1 (en) 1978-12-16
BE859454A (en) 1978-04-06
GB1584998A (en) 1981-02-18
CA1101638A (en) 1981-05-26
JPS5346515A (en) 1978-04-26
AU2942077A (en) 1979-04-12
AU518302B2 (en) 1981-09-24
DE2745013A1 (en) 1978-04-13
DD133058A5 (en) 1978-11-29
FR2367188A1 (en) 1978-05-05
ES472787A1 (en) 1979-02-16
AR212664A1 (en) 1978-08-31
BR7706619A (en) 1978-07-18
PL201333A1 (en) 1978-04-24

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