GB1473883A - Process for reducing nitrogen oxides - Google Patents

Process for reducing nitrogen oxides

Info

Publication number
GB1473883A
GB1473883A GB3086574A GB3086574A GB1473883A GB 1473883 A GB1473883 A GB 1473883A GB 3086574 A GB3086574 A GB 3086574A GB 3086574 A GB3086574 A GB 3086574A GB 1473883 A GB1473883 A GB 1473883A
Authority
GB
United Kingdom
Prior art keywords
catalyst
hitachi
july
tungsten
nitrogen oxides
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
GB3086574A
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.)
Hitachi Ltd
Mitsubishi Petrochemical Co Ltd
Mitsubishi Hitachi Power Systems Ltd
Original Assignee
Babcock Hitachi KK
Hitachi Ltd
Mitsubishi Petrochemical Co 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 Babcock Hitachi KK, Hitachi Ltd, Mitsubishi Petrochemical Co Ltd filed Critical Babcock Hitachi KK
Publication of GB1473883A publication Critical patent/GB1473883A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • B01J23/84—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/85—Chromium, molybdenum or tungsten
    • 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
    • B01D53/9418—Processes characterised by a specific catalyst for removing nitrogen oxides by selective catalytic reduction [SCR] using a reducing agent in a lean exhaust gas
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/20—Reductants
    • B01D2251/206—Ammonium compounds
    • B01D2251/2062—Ammonia
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/204—Alkaline earth metals
    • B01D2255/2047—Magnesium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/206—Rare earth metals
    • B01D2255/2065—Cerium
    • 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
    • B01D2255/20738—Iron
    • 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
    • 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
    • B01D2255/20761—Copper
    • 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
    • B01D2255/20769—Molybdenum
    • 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
    • B01D2255/20776—Tungsten
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/209—Other metals
    • B01D2255/2092—Aluminium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/30—Silica

Landscapes

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

Abstract

1473883 Nitrogen oxide-reduction catalyst MITSUBISHI PETROCHEMICAL CO Ltd HITACHI Ltd and BABCOCK-HITACHI KK 11 July 1974 [17 July 1973] 30865/74 Heading B1E [Also in Division Cl] A catalyst composition used for the reduction of nitrogen oxides comprises iron and tungsten in the form of their oxides in an atomic ratio Fe/W of 1:0.001-1, the catalyst composition having being calcined at 300- 700‹C and having a surface area of at least 5 m<SP>2</SP>/g. The catalyst may contain an oxide of a further element from Groups Ib, IIa, IIIb, IV, Va, VIa, VIII or of the rare earths e.g. Cu, Mg, Al, Si, Ti, Zr, Sn, V, Nb, Cr, Mo, Co, Ni and Ce. In an atomic ratio based on iron not exceeding 1:0.15. The catalyst may be supported, e.g. on silica, alumina, silicaalumina, diatomaceous earth, acid clay, active clay, zeolite, titania or zirconia. The catalyst may be prepared by impregnation or precipitation. Silicotungstic acid is a preferred starting material for both the tungsten and silica carrier.
GB3086574A 1973-07-17 1974-07-11 Process for reducing nitrogen oxides Expired GB1473883A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP48081427A JPS5057946A (en) 1973-07-17 1973-07-17

Publications (1)

Publication Number Publication Date
GB1473883A true GB1473883A (en) 1977-05-18

Family

ID=13746057

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3086574A Expired GB1473883A (en) 1973-07-17 1974-07-11 Process for reducing nitrogen oxides

Country Status (5)

Country Link
JP (1) JPS5057946A (en)
DE (1) DE2434416C2 (en)
FR (1) FR2237678B1 (en)
GB (1) GB1473883A (en)
IT (1) IT1017134B (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4720478A (en) * 1984-08-17 1988-01-19 Huels Aktiengesellschaft Catalyst for the orthomethylation of phenols
WO2001051181A1 (en) * 2000-01-14 2001-07-19 Krupp Uhde Gmbh Method for removal of nox and n2o
US7985391B2 (en) 2007-06-25 2011-07-26 Johnson Matthey Public Limited Company Non-zeolite base metal SCR catalyst
WO2011116907A2 (en) 2010-03-26 2011-09-29 Umicore Ag & Co. Kg Zrox, ce-zrox, ce-zr-reox as host matrices for redox active cations for low temperature, hydrothermally durable and poison resistant scr catalysts
US8529853B2 (en) 2010-03-26 2013-09-10 Umicore Ag & Co. Kg ZrOx, Ce-ZrOx, Ce-Zr-REOx as host matrices for redox active cations for low temperature, hydrothermally durable and poison resistant SCR catalysts
CN103877986A (en) * 2014-01-27 2014-06-25 济南大学 Ferro-tungsten composite oxide denitrification catalyst with flower petal structure and preparation method and application of ferro-tungsten composite oxide denitrification catalyst with flower petal structure
CN105664912A (en) * 2015-12-31 2016-06-15 中国科学院生态环境研究中心 Cerium-tin-zirconium composite oxide catalyst, and preparation method and use thereof

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5117173A (en) * 1974-08-01 1976-02-10 Japan Gasoline Haigasuchuno chitsusosankabutsukangenho
US4182745A (en) * 1974-08-06 1980-01-08 Jgc Corporation Catalyst for reducing nitrogen oxides in a waste gas and a process for catalytically reducing nitrogen oxides contained in a waste gas
JPS52111482A (en) * 1976-03-15 1977-09-19 Hitachi Zosen Corp Flue gas denitration catalyst with high activity
JPS6128454A (en) * 1984-07-17 1986-02-08 シ−ビ−エムエム・インタ−ナシヨナル・リミタ−ダ Catalyst for removing nitrogen oxide in exhaust gas
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
SE464688B (en) * 1989-02-27 1991-06-03 Eka Nobel Ab CATALYST FOR REDUCING NITROGEN OXIDES AND USING THEREOF
JP4895090B2 (en) * 2005-12-28 2012-03-14 株式会社豊田中央研究所 NOX selective reduction catalyst

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3279884A (en) * 1963-10-31 1966-10-18 Basf Ag Selective removal of oxides of nitrogen from gas mixtures containing oxygen
DE1259298B (en) * 1964-08-29 1968-01-25 Hamburger Gaswerke Gmbh Process for removing nitrogen oxides from gases by catalytic reduction thereof to nitrogen
DE1937552A1 (en) * 1969-07-24 1971-02-11 Basf Ag Process for the selective removal of nitrogen dioxide from gases
BE756150A (en) * 1969-09-16 1971-02-15 Johnson Matthey & Cy Ltd IMPROVEMENTS TO CATALYTIC REACTIONS
CA970348A (en) * 1970-08-07 1975-07-01 Snamprogetti S.P.A. Catalytic composition for the production of unsaturated nitriles

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4720478A (en) * 1984-08-17 1988-01-19 Huels Aktiengesellschaft Catalyst for the orthomethylation of phenols
WO2001051181A1 (en) * 2000-01-14 2001-07-19 Krupp Uhde Gmbh Method for removal of nox and n2o
US7985391B2 (en) 2007-06-25 2011-07-26 Johnson Matthey Public Limited Company Non-zeolite base metal SCR catalyst
US8091351B2 (en) 2007-06-25 2012-01-10 Johnson Matthey Public Limited Company Non-zeolite base metal SCR catalyst
US8367578B2 (en) 2007-06-25 2013-02-05 Johnson Matthey Public Limited Company Non-zeolite base metal SCR catalyst
WO2011116907A2 (en) 2010-03-26 2011-09-29 Umicore Ag & Co. Kg Zrox, ce-zrox, ce-zr-reox as host matrices for redox active cations for low temperature, hydrothermally durable and poison resistant scr catalysts
US8529853B2 (en) 2010-03-26 2013-09-10 Umicore Ag & Co. Kg ZrOx, Ce-ZrOx, Ce-Zr-REOx as host matrices for redox active cations for low temperature, hydrothermally durable and poison resistant SCR catalysts
CN103877986A (en) * 2014-01-27 2014-06-25 济南大学 Ferro-tungsten composite oxide denitrification catalyst with flower petal structure and preparation method and application of ferro-tungsten composite oxide denitrification catalyst with flower petal structure
CN103877986B (en) * 2014-01-27 2016-01-20 济南大学 A kind of ferrotungsten composite oxides denitrating catalyst with sheet flower-like structure and preparation method thereof and application
CN105664912A (en) * 2015-12-31 2016-06-15 中国科学院生态环境研究中心 Cerium-tin-zirconium composite oxide catalyst, and preparation method and use thereof

Also Published As

Publication number Publication date
FR2237678A1 (en) 1975-02-14
JPS5057946A (en) 1975-05-20
FR2237678B1 (en) 1982-01-29
DE2434416A1 (en) 1975-02-13
DE2434416C2 (en) 1984-09-13
IT1017134B (en) 1977-07-20

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Legal Events

Date Code Title Description
PS Patent sealed
429A Application made for amendment of specification (sect. 29/1949)
429H Application (made) for amendment of specification now open to opposition (sect. 29/1949)
429D Case decided by the comptroller ** specification amended (sect. 29/1949)
SP Amendment (slips) printed
PE20 Patent expired after termination of 20 years

Effective date: 19940710