FR2322642A1 - Procede de reduction des oxydes d'azote presents dans un gaz d'echappement ou un gaz residuaire en azote inoffensif - Google Patents

Procede de reduction des oxydes d'azote presents dans un gaz d'echappement ou un gaz residuaire en azote inoffensif

Info

Publication number
FR2322642A1
FR2322642A1 FR7626643A FR7626643A FR2322642A1 FR 2322642 A1 FR2322642 A1 FR 2322642A1 FR 7626643 A FR7626643 A FR 7626643A FR 7626643 A FR7626643 A FR 7626643A FR 2322642 A1 FR2322642 A1 FR 2322642A1
Authority
FR
France
Prior art keywords
inoffensive
exhaust gas
oxides present
nitrogen
gas
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.)
Granted
Application number
FR7626643A
Other languages
English (en)
Other versions
FR2322642B1 (fr
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.)
JFE Engineering Corp
Original Assignee
Nippon Kokan 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 claimed from JP50107623A external-priority patent/JPS5230768A/ja
Priority claimed from JP50107624A external-priority patent/JPS5230796A/ja
Application filed by Nippon Kokan Ltd filed Critical Nippon Kokan Ltd
Publication of FR2322642A1 publication Critical patent/FR2322642A1/fr
Application granted granted Critical
Publication of FR2322642B1 publication Critical patent/FR2322642B1/fr
Granted 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
    • B01D53/74—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
    • 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
    • B01D53/8628—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
    • B01D53/9404—Removing only nitrogen compounds
    • B01D53/9409—Nitrogen oxides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
    • B01J23/74—Iron group metals
    • B01J23/745—Iron

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biomedical Technology (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Health & Medical Sciences (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Catalysts (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
FR7626643A 1975-09-05 1976-09-03 Procede de reduction des oxydes d'azote presents dans un gaz d'echappement ou un gaz residuaire en azote inoffensif Granted FR2322642A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP50107623A JPS5230768A (en) 1975-09-05 1975-09-05 Process for the denitrification of exhaust gas with iron oxide as cata lyst
JP50107624A JPS5230796A (en) 1975-09-05 1975-09-05 Process for preparing iron ore catalysts for denitration of exhaust ga s

Publications (2)

Publication Number Publication Date
FR2322642A1 true FR2322642A1 (fr) 1977-04-01
FR2322642B1 FR2322642B1 (fr) 1979-09-28

Family

ID=26447642

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7626643A Granted FR2322642A1 (fr) 1975-09-05 1976-09-03 Procede de reduction des oxydes d'azote presents dans un gaz d'echappement ou un gaz residuaire en azote inoffensif

Country Status (7)

Country Link
US (1) US4070440A (fr)
AU (1) AU498403B2 (fr)
CA (1) CA1062442A (fr)
DE (1) DE2639848C3 (fr)
FR (1) FR2322642A1 (fr)
GB (1) GB1554300A (fr)
IT (1) IT1066327B (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0229229A1 (fr) * 1985-12-12 1987-07-22 DIDIER ENGINEERING GmbH Procédé de fabrication d'un catalyseur pour la réduction des oxydes d'azote des gaz d'échappement
EP0431819A1 (fr) * 1989-11-28 1991-06-12 Yutaka Tamaura Méthode pour décomposer des oxydes gazeux et catalyseur utilisé à cet effet
NL9402180A (nl) * 1994-12-21 1996-08-01 Hoogovens Staal Bv Werkwijze voor het verwijderen van NOx uit een gas door middel van selectieve katalytische reductie.

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3531651C1 (de) * 1985-09-05 1987-02-19 Didier Werke Ag Katalysator in Form einer Platte fuer die Stickoxidreduzierung in Abgasen
DE3532207A1 (de) * 1985-09-10 1987-03-19 Didier Eng Verfahren zur herstellung von katalysatorformlingen
FI853615L (fi) * 1985-09-20 1987-03-21 Tampella Oy Ab Foerfarande foer minskning av utslaeppen av kvaeve- och svaveloxider vid foerbraenning av kvaeve- och svavelhaltigt braensle.
DE3634553A1 (de) * 1986-10-10 1988-04-21 Didier Werke Ag Verwendung von manganknollen oder manganhaltigen tiefsee-erzen in katalysatoren zur verminderung von stickstoffoxiden in abgasen
US5814164A (en) * 1994-11-09 1998-09-29 American Scientific Materials Technologies L.P. Thin-walled, monolithic iron oxide structures made from steels, and methods for manufacturing such structures
US6045628A (en) * 1996-04-30 2000-04-04 American Scientific Materials Technologies, L.P. Thin-walled monolithic metal oxide structures made from metals, and methods for manufacturing such structures
CA2141734C (fr) * 1995-01-25 2000-06-06 Raj Narain Pandey Reduction catalytique selective d'oxydes d'azote
US6461562B1 (en) 1999-02-17 2002-10-08 American Scientific Materials Technologies, Lp Methods of making sintered metal oxide articles
CN104971721A (zh) * 2015-07-17 2015-10-14 合肥工业大学 一种铁氧化物选择性氨还原脱硝催化剂及其应用方法
CN113385008B (zh) * 2021-06-28 2022-10-11 北京工业大学 一种利用铁碳复合材料作为sncr添加剂进行烟气脱硝的方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5338714B2 (fr) * 1971-10-04 1978-10-17
US3959400A (en) * 1973-10-01 1976-05-25 Mobil Oil Corporation Olefin dimerization
JPS5332788B2 (fr) * 1973-10-12 1978-09-09
US3953575A (en) * 1973-11-21 1976-04-27 American Gas Association Iron oxide sorbents for regenerative sorption of Nox

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NEANT *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0229229A1 (fr) * 1985-12-12 1987-07-22 DIDIER ENGINEERING GmbH Procédé de fabrication d'un catalyseur pour la réduction des oxydes d'azote des gaz d'échappement
EP0431819A1 (fr) * 1989-11-28 1991-06-12 Yutaka Tamaura Méthode pour décomposer des oxydes gazeux et catalyseur utilisé à cet effet
NL9402180A (nl) * 1994-12-21 1996-08-01 Hoogovens Staal Bv Werkwijze voor het verwijderen van NOx uit een gas door middel van selectieve katalytische reductie.

Also Published As

Publication number Publication date
DE2639848C3 (de) 1978-08-03
CA1062442A (fr) 1979-09-18
DE2639848B2 (de) 1977-12-01
FR2322642B1 (fr) 1979-09-28
AU498403B2 (en) 1979-03-08
DE2639848A1 (de) 1977-03-17
US4070440A (en) 1978-01-24
GB1554300A (en) 1979-10-17
IT1066327B (it) 1985-03-04
AU1734276A (en) 1978-03-09

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Legal Events

Date Code Title Description
ST Notification of lapse