GB1520712A - Method of treating combustion exhaust gas containing nitrogen oxides - Google Patents

Method of treating combustion exhaust gas containing nitrogen oxides

Info

Publication number
GB1520712A
GB1520712A GB40377A GB40377A GB1520712A GB 1520712 A GB1520712 A GB 1520712A GB 40377 A GB40377 A GB 40377A GB 40377 A GB40377 A GB 40377A GB 1520712 A GB1520712 A GB 1520712A
Authority
GB
United Kingdom
Prior art keywords
combustion exhaust
exhaust gas
gas containing
nitrogen oxides
content
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
GB40377A
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.)
Mitsubishi Kasei Corp
Original Assignee
Mitsubishi Kasei Corp
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 Mitsubishi Kasei Corp filed Critical Mitsubishi Kasei Corp
Priority to GB40377A priority Critical patent/GB1520712A/en
Publication of GB1520712A publication Critical patent/GB1520712A/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
    • B01D53/46—Removing components of defined structure
    • B01D53/54—Nitrogen compounds
    • B01D53/56—Nitrogen oxides

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (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)

Abstract

1520712 Treating exhaust gases MITSUBISHI CHEMICAL INDUSTRIES Ltd 6 Jan 1977 00403/75 Heading CIA The NO 4 content of O 2 -containing combustion exhaust gas is non-catalytically reduced by: (a) treating the gas with NH 3 in a mole ratio NH 3 :NO 4 of at least 0À6:1 in presence of O 2 in an amount at least 0À1 vol per cent of total gas mixture and in the absence of the H 2 or with less than 10:1 mole ratio of H 2 :NH 3 at 700-1300‹ C. and a residence time of at least 0À018 secs.; (b) raising the H 2 content to a mole ratio H 2 :NH 3 of at least 3:1 and maintaining the gas mixture at a temperature lower than in (a) in the range 490-700‹ C. while maintaining the O 2 content of at least 0À1 vol per cent.
GB40377A 1977-01-06 1977-01-06 Method of treating combustion exhaust gas containing nitrogen oxides Expired GB1520712A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB40377A GB1520712A (en) 1977-01-06 1977-01-06 Method of treating combustion exhaust gas containing nitrogen oxides

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB40377A GB1520712A (en) 1977-01-06 1977-01-06 Method of treating combustion exhaust gas containing nitrogen oxides

Publications (1)

Publication Number Publication Date
GB1520712A true GB1520712A (en) 1978-08-09

Family

ID=9703774

Family Applications (1)

Application Number Title Priority Date Filing Date
GB40377A Expired GB1520712A (en) 1977-01-06 1977-01-06 Method of treating combustion exhaust gas containing nitrogen oxides

Country Status (1)

Country Link
GB (1) GB1520712A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0079171A1 (en) * 1981-10-29 1983-05-18 Exxon Research And Engineering Company Non-catalytic process for reducing no emissions of combustion effluents
WO1985002130A1 (en) * 1983-11-10 1985-05-23 Exxon Research And Engineering Company Non-catalytic method for reducing the concentration of nitrogen oxide in combustion effluents

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0079171A1 (en) * 1981-10-29 1983-05-18 Exxon Research And Engineering Company Non-catalytic process for reducing no emissions of combustion effluents
WO1985002130A1 (en) * 1983-11-10 1985-05-23 Exxon Research And Engineering Company Non-catalytic method for reducing the concentration of nitrogen oxide in combustion effluents

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Legal Events

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

Effective date: 19950106