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GB1438120A - Removal of nitrogen oxides from flue gas - Google Patents

Removal of nitrogen oxides from flue gas

Info

Publication number
GB1438120A
GB1438120A GB3653073A GB3653073A GB1438120A GB 1438120 A GB1438120 A GB 1438120A GB 3653073 A GB3653073 A GB 3653073A GB 3653073 A GB3653073 A GB 3653073A GB 1438120 A GB1438120 A GB 1438120A
Authority
GB
United Kingdom
Prior art keywords
stream
mass
alumina
silica
transition metal
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
GB3653073A
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.)
ExxonMobil Technology and Engineering Co
Original Assignee
Exxon Research and Engineering Co
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 Exxon Research and Engineering Co filed Critical Exxon Research and Engineering Co
Publication of GB1438120A publication Critical patent/GB1438120A/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
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B01D53/8637—Simultaneously removing sulfur oxides and 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
    • 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
    • B01D2255/207—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
    • B01D2255/20761—Copper

Landscapes

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

Abstract

1438120 Gas purification EXXON RESEARCH & ENG CO 1 Aug 1973 [1 Sept 1972] 36530/73 Heading C1A Nitrogen oxides may be removed from a gas stream by adding ammonia to the stream to provide at least 0À5 mole of ammonia per mole of NO x and contacting the resultant stream under oxidizing conditions and at a gas inlet temperature of from 600‹ to 950‹ F. with a solid contact mass comprising at least one non-noble transition metal or compound thereof disposed on a refractory porous carrier having a surface area of at least 40 m.<SP>2</SP>/gram. The contact-mass may comprise copper or ferric oxide, supported on alumina, silica or alumina-silica. Other transition metal oxides which may be used include oxides of vanadium, chromium, molybdenum, tungsten, manganese, cobalt and nickel. The contact mass may be regnerated by treating with air or flue gas containing more than the usual amount of oxygen, or by reduction with hydrogen, carbon monoxide, methane, ethane, propane, butane, hexane or decane, mixed if desired with steam.
GB3653073A 1972-09-01 1973-08-01 Removal of nitrogen oxides from flue gas Expired GB1438120A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US28583272A 1972-09-01 1972-09-01

Publications (1)

Publication Number Publication Date
GB1438120A true GB1438120A (en) 1976-06-03

Family

ID=23095888

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3653073A Expired GB1438120A (en) 1972-09-01 1973-08-01 Removal of nitrogen oxides from flue gas

Country Status (8)

Country Link
JP (2) JPS6059004B2 (en)
BE (1) BE804317A (en)
CA (1) CA1007830A (en)
DE (1) DE2341242A1 (en)
FR (1) FR2197628B1 (en)
GB (1) GB1438120A (en)
IT (1) IT993099B (en)
NL (1) NL7312041A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4251496A (en) * 1979-03-22 1981-02-17 Exxon Research & Engineering Co. Process for the removal of SOx and NOx from gaseous mixture containing the same
DE3140657A1 (en) * 1981-10-13 1983-04-28 Alkem Gmbh, 6450 Hanau Process for the final conditioning of an aqueous solution containing pollutants, especially radioactive and/or toxic pollutants
DE3423744A1 (en) * 1984-06-28 1986-01-09 Bergwerksverband Gmbh, 4300 Essen Process for separating out SO2 and NOx
CN112569777A (en) * 2019-09-27 2021-03-30 富利康科技股份有限公司 Water-gas resistant denitration device and catalyst suitable for low-temperature environment

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1438120A (en) * 1972-09-01 1976-06-03 Exxon Research Engineering Co Removal of nitrogen oxides from flue gas
JPS5012393B2 (en) * 1973-03-13 1975-05-12
JPS5523086B2 (en) * 1973-03-26 1980-06-20
JPS525433B2 (en) * 1973-04-18 1977-02-14
JPS5511892B2 (en) * 1973-04-18 1980-03-28
GB1474184A (en) * 1973-05-08 1977-05-18 Shell Int Research Process for removing sulphur oxides and particulate matter from waste gases and apparatus therefor
JPS5315705B2 (en) * 1973-05-12 1978-05-26
US4107272A (en) * 1973-05-21 1978-08-15 Hitachi, Ltd. Process for removing nitrogen oxides using ammonia as a reductant and sulfated metallic catalysts
JPS5041764A (en) * 1973-08-17 1975-04-16
JPS5621450B2 (en) * 1973-09-29 1981-05-19
US4085193A (en) * 1973-12-12 1978-04-18 Mitsubishi Petrochemical Co. Ltd. Catalytic process for reducing nitrogen oxides to nitrogen
JPS5515247B2 (en) * 1974-06-11 1980-04-22
JPS5116273A (en) * 1974-07-31 1976-02-09 Hitachi Ltd DATSUSHOSOCHINIOKERU NH3 CHUNYURYONO SEIGYOHO
JPS5118262A (en) * 1974-08-06 1976-02-13 Japan Gasoline Haigasuchuno chitsusosankabutsuno jokyohoho
JPS5127865A (en) * 1974-09-02 1976-03-09 Asahi Chemical Ind
JPS539598B2 (en) * 1974-09-10 1978-04-06
JPS542913B2 (en) * 1974-09-19 1979-02-15
US4031185A (en) * 1975-02-03 1977-06-21 Hitachi, Ltd. Process for making nitrogen oxides contained in flue gas harmless
JPS51108666A (en) * 1975-03-20 1976-09-27 Asahi Glass Co Ltd
US4104361A (en) * 1975-03-28 1978-08-01 Exxon Research & Engineering Co. Catalyst for reduction of nitrogen oxides and process for preparing the same
JPS5210856A (en) * 1975-07-16 1977-01-27 Kyushu Sekisui Kogyo Kk Process and apparatus for removal of nitrogen oxides
JPS5230285A (en) * 1975-09-03 1977-03-07 Seitetsu Kagaku Co Ltd Regeneration method of catalyst
JPS609201B2 (en) * 1975-09-29 1985-03-08 株式会社日立製作所 Exhaust heat recovery boiler equipment
NL7601371A (en) * 1976-02-11 1977-08-15 Shell Int Research PROCEDURE FOR THE SIMULTANEOUS REMOVAL OF NITROGEN OXIDES AND SULFUR OXIDES FROM A GAS FLOW.
FR2466434A1 (en) * 1979-10-01 1981-04-10 Uop Inc Sepn. of sulphur and nitrogen oxide(s) from gas mixt. - by contacting mixt. and ammonia with sulphur oxide(s) acceptor of copper (oxide) dispersed on ruthenium and rhenium oxide(s) compsn.
JPS56150421A (en) * 1980-04-23 1981-11-20 Hitachi Ltd Cleaning of waste gas
JPH0747130B2 (en) * 1991-07-23 1995-05-24 株式会社コロイドリサーチ Method for producing nitrogen oxide decomposition catalyst

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1438120A (en) * 1972-09-01 1976-06-03 Exxon Research Engineering Co Removal of nitrogen oxides from flue gas

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4251496A (en) * 1979-03-22 1981-02-17 Exxon Research & Engineering Co. Process for the removal of SOx and NOx from gaseous mixture containing the same
DE3140657A1 (en) * 1981-10-13 1983-04-28 Alkem Gmbh, 6450 Hanau Process for the final conditioning of an aqueous solution containing pollutants, especially radioactive and/or toxic pollutants
DE3423744A1 (en) * 1984-06-28 1986-01-09 Bergwerksverband Gmbh, 4300 Essen Process for separating out SO2 and NOx
CN112569777A (en) * 2019-09-27 2021-03-30 富利康科技股份有限公司 Water-gas resistant denitration device and catalyst suitable for low-temperature environment

Also Published As

Publication number Publication date
CA1007830A (en) 1977-04-05
BE804317A (en) 1974-02-28
JPS4975464A (en) 1974-07-22
JPS6059004B2 (en) 1985-12-23
NL7312041A (en) 1974-03-05
DE2341242A1 (en) 1974-03-21
JPS5837010B2 (en) 1983-08-13
JPS5123474A (en) 1976-02-25
FR2197628A1 (en) 1974-03-29
IT993099B (en) 1975-09-30
FR2197628B1 (en) 1980-03-28

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee