GB901630A - Improvements in or relating to the removal of nitric oxide from gas mixtures - Google Patents

Improvements in or relating to the removal of nitric oxide from gas mixtures

Info

Publication number
GB901630A
GB901630A GB37792/61A GB3779261A GB901630A GB 901630 A GB901630 A GB 901630A GB 37792/61 A GB37792/61 A GB 37792/61A GB 3779261 A GB3779261 A GB 3779261A GB 901630 A GB901630 A GB 901630A
Authority
GB
United Kingdom
Prior art keywords
gas
tower
gas mixture
scrubbing
solution
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
GB37792/61A
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.)
Linde GmbH
Original Assignee
Gesellschaft fuer Lindes Eismaschinen AG
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 Gesellschaft fuer Lindes Eismaschinen AG filed Critical Gesellschaft fuer Lindes Eismaschinen AG
Publication of GB901630A publication Critical patent/GB901630A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
    • C10K1/00—Purifying combustible gases containing carbon monoxide
    • C10K1/08—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors
    • C10K1/10—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors with aqueous liquids
    • C10K1/102—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors with aqueous liquids containing free acid
    • 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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
    • C10K1/00—Purifying combustible gases containing carbon monoxide
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
    • C10K1/00—Purifying combustible gases containing carbon monoxide
    • C10K1/08—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors
    • C10K1/10—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors with aqueous liquids
    • C10K1/105—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors with aqueous liquids containing metal compounds other than alkali- or earth-alkali carbonates, -hydroxides, oxides, or salts of inorganic acids derived from sulfur
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/151—Reduction of greenhouse gas [GHG] emissions, e.g. CO2

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Environmental & Geological Engineering (AREA)
  • Organic Chemistry (AREA)
  • Biomedical Technology (AREA)
  • Analytical Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Treating Waste Gases (AREA)

Abstract

The concentration of nitric oxide in a gas mixture is decreased, at least to a level at which any NO still remaining is not deleterious in use, by treating said gas mixture with an aqueous solution of hypochlorous acid, chlorous acid, or sodium chlorite, the NO being oxidized to higher oxides or oxyacids of nitrogen, e.g. NO2, HNO2, and HNO3. The gas mixture may be town gas, producer gas, coke oven gas, coal gas, "convert gas", or flue gas. When the gas mixture is free of carbon dioxide, or contains it as an undesired constituent, the preferred treatment is with a sodium chlorite solution of pH 7 to 12 whilst, if CO2 is to be retained in the gas mixture, the pH is desirably 3 to 6. After treatment, the gas mixture may be scrubbed with an aqueous alkaline scrubbing solution to remove the products of oxidation of NO. The aqueous solution of HClO, HClO2 or NaClO2 may be circulated between the top and bottom of a scrubbing tower, and a second tower may be provided for ensuring the purity of the scrubbed gas. When the scrubbing capacity of the first tower is exhausted, the second tower may be used as the primary scrubber, and the first tower replenished with fresh scrubbing solution and used as the secondary tower.
GB37792/61A 1957-09-03 1958-08-27 Improvements in or relating to the removal of nitric oxide from gas mixtures Expired GB901630A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEG22856A DE1085640B (en) 1957-09-03 1957-09-03 Removal of nitrogen oxide from gas mixtures containing it

Publications (1)

Publication Number Publication Date
GB901630A true GB901630A (en) 1962-07-18

Family

ID=7122046

Family Applications (2)

Application Number Title Priority Date Filing Date
GB27485/58A Expired GB901629A (en) 1957-09-03 1958-08-27 Improvements in or relating to the purification of gas mixtures
GB37792/61A Expired GB901630A (en) 1957-09-03 1958-08-27 Improvements in or relating to the removal of nitric oxide from gas mixtures

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB27485/58A Expired GB901629A (en) 1957-09-03 1958-08-27 Improvements in or relating to the purification of gas mixtures

Country Status (4)

Country Link
BE (1) BE570584A (en)
DE (1) DE1085640B (en)
GB (2) GB901629A (en)
NL (2) NL107853C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4029739A (en) * 1975-01-06 1977-06-14 Fuji Kasui Engineering Co., Ltd. Process for removing nitrogen oxides from waste gas
GB2170220A (en) * 1985-01-25 1986-07-30 Nl Petroleum Services Treatment of hydrocarbon fluids subject to contamination by sulfide compounds
CN113117479A (en) * 2019-12-30 2021-07-16 中晶环境科技股份有限公司 Semi-dry flue gas desulfurization and denitrification method

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1278060B (en) * 1959-11-05 1968-09-19 Linde Ag Process for removing nitrogen oxide from gas mixtures
DE1925871C3 (en) * 1969-05-21 1987-01-22 Moskovskij gosudarstvennyj universitet imeni M.V. Lomonosova, Moskau/Moskva Process for the fine purification of gases from nitrogen oxides
US4061743A (en) * 1975-05-06 1977-12-06 Fuji Kasui Engineering Co., Ltd. Exhaust gas scrubbing process

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE568814C (en) * 1931-12-13 1933-01-24 Springer & Moeller Akt Ges Process for cleaning exhaust gases from internal combustion engines to be used as protective gases
DE660734C (en) * 1933-03-07 1938-06-01 Linde Eismasch Ag Process to accelerate the formation of nitrogen dioxide
DE697633C (en) * 1936-10-28 1940-10-18 Phil Theo Payer Dr Process for the removal of nitrogen oxide from gases containing sulfur with the help of metal sulfides
DE767189C (en) * 1937-10-06 1952-01-31 Ruhrgas Ag Process for the removal of nitrogen oxides from coke oven gases and similar gases
DE725697C (en) * 1937-11-10 1942-09-29 Ruhrchemie Ag Process for removing nitrogen oxides from distillation gases
DE851107C (en) * 1950-06-22 1952-10-02 Gottfried Bischoff G M B H Process for removing nitrogen-containing resins from flammable gases

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4029739A (en) * 1975-01-06 1977-06-14 Fuji Kasui Engineering Co., Ltd. Process for removing nitrogen oxides from waste gas
GB2170220A (en) * 1985-01-25 1986-07-30 Nl Petroleum Services Treatment of hydrocarbon fluids subject to contamination by sulfide compounds
CN113117479A (en) * 2019-12-30 2021-07-16 中晶环境科技股份有限公司 Semi-dry flue gas desulfurization and denitrification method

Also Published As

Publication number Publication date
DE1085640B (en) 1960-07-21
BE570584A (en) 1900-01-01
NL107717C (en) 1900-01-01
NL107853C (en) 1900-01-01
GB901629A (en) 1962-07-18

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