FR2374942A1 - Sulphur dioxide removal from gases - by absorbing in soln. contg. a metal halide and hydroxide - Google Patents

Sulphur dioxide removal from gases - by absorbing in soln. contg. a metal halide and hydroxide

Info

Publication number
FR2374942A1
FR2374942A1 FR7738708A FR7738708A FR2374942A1 FR 2374942 A1 FR2374942 A1 FR 2374942A1 FR 7738708 A FR7738708 A FR 7738708A FR 7738708 A FR7738708 A FR 7738708A FR 2374942 A1 FR2374942 A1 FR 2374942A1
Authority
FR
France
Prior art keywords
soln
hydroxide
contg
gases
absorbing
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
FR7738708A
Other languages
French (fr)
Other versions
FR2374942B1 (en
Inventor
Isao Furuta
Kazuhito Yagaki
Toyohiko Masuda
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.)
Kobe Steel Ltd
Original Assignee
Kobe Steel 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 DE19762657970 external-priority patent/DE2657970A1/en
Priority claimed from DE19762657971 external-priority patent/DE2657971A1/en
Application filed by Kobe Steel Ltd filed Critical Kobe Steel Ltd
Publication of FR2374942A1 publication Critical patent/FR2374942A1/en
Application granted granted Critical
Publication of FR2374942B1 publication Critical patent/FR2374942B1/fr
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F11/00—Compounds of calcium, strontium, or barium
    • C01F11/46—Sulfates
    • C01F11/464—Sulfates of Ca from gases containing sulfur 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
    • B01D53/46—Removing components of defined structure
    • B01D53/48—Sulfur compounds
    • B01D53/50—Sulfur oxides
    • B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • 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)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Geology (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)
  • Treating Waste Gases (AREA)

Abstract

Process of parent patent is for removing S, esp. SO2, from a gas by contacting with an absorbant soln. contg. 25-33 wt.% of a halide of a metal from Groups II, III, and VIII and 0.3-0.8% of a hydroxide of the metal. In the addn. the compsn. range of the halide is increased to 7.5-36 wt.% and the lower compsn. of the hydroxide is decreased to 0.03% without affecting the efficiency. The soln. may be clear or limpid rather than a paste. The CO2 absorption capacity of the soln. can be reduced with CaCl2 and the desulphurisation efficiency increased. Solids can be easily separated from the soln. Compared with the limestone-gypsum process a higher rate of SO2 removal is possible for the same pH. NO2 can also be removed.
FR7738708A 1976-12-21 1977-12-21 Sulphur dioxide removal from gases - by absorbing in soln. contg. a metal halide and hydroxide Granted FR2374942A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19762657970 DE2657970A1 (en) 1976-12-21 1976-12-21 Sulphur dioxide removal from gases - by absorbing in soln. contg. a metal halide and hydroxide
DE19762657971 DE2657971A1 (en) 1976-12-21 1976-12-21 METHOD OF REMOVING SULFUR DIOXIDE FROM A GAS

Publications (2)

Publication Number Publication Date
FR2374942A1 true FR2374942A1 (en) 1978-07-21
FR2374942B1 FR2374942B1 (en) 1980-10-17

Family

ID=25771283

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7738708A Granted FR2374942A1 (en) 1976-12-21 1977-12-21 Sulphur dioxide removal from gases - by absorbing in soln. contg. a metal halide and hydroxide

Country Status (1)

Country Link
FR (1) FR2374942A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988004648A1 (en) * 1986-12-18 1988-06-30 Hoelter Heinz Process for the in situ recovery of calcium sulfate hemihydrate and/or calcium sulfate (anhydrite) from the washing units a wet flue gas desulphurating plant

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2415693A1 (en) * 1974-04-01 1975-10-02 Heinz Hoelter Purification of gas mixts contg sulphur dioxide - by scrubbing with aq soln contg calcium carbonate, hydroxide, oxide and chloride
FR2285170A1 (en) * 1974-09-19 1976-04-16 Hoelter H PROCESS AND DEVICE FOR PURIFYING FUME GASES AND OTHER WASTE GASES CONTAINING SULPHUROUS ANHYDRIDE

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2415693A1 (en) * 1974-04-01 1975-10-02 Heinz Hoelter Purification of gas mixts contg sulphur dioxide - by scrubbing with aq soln contg calcium carbonate, hydroxide, oxide and chloride
FR2285170A1 (en) * 1974-09-19 1976-04-16 Hoelter H PROCESS AND DEVICE FOR PURIFYING FUME GASES AND OTHER WASTE GASES CONTAINING SULPHUROUS ANHYDRIDE

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988004648A1 (en) * 1986-12-18 1988-06-30 Hoelter Heinz Process for the in situ recovery of calcium sulfate hemihydrate and/or calcium sulfate (anhydrite) from the washing units a wet flue gas desulphurating plant

Also Published As

Publication number Publication date
FR2374942B1 (en) 1980-10-17

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Legal Events

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