JPS5388694A - Calcium sulfite oxidizing method - Google Patents

Calcium sulfite oxidizing method

Info

Publication number
JPS5388694A
JPS5388694A JP300177A JP300177A JPS5388694A JP S5388694 A JPS5388694 A JP S5388694A JP 300177 A JP300177 A JP 300177A JP 300177 A JP300177 A JP 300177A JP S5388694 A JPS5388694 A JP S5388694A
Authority
JP
Japan
Prior art keywords
calcium sulfite
oxidizing method
sulfite oxidizing
slurry
caso
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
JP300177A
Other languages
Japanese (ja)
Other versions
JPS6031764B2 (en
Inventor
Tomijiro Morita
Hideo Kusano
Isao Funahashi
Minoru Ota
Noriharu Matsuda
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.)
Kureha Corp
Original Assignee
Kureha 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 Kureha Corp filed Critical Kureha Corp
Priority to JP52003001A priority Critical patent/JPS6031764B2/en
Priority to DE19782800408 priority patent/DE2800408A1/en
Publication of JPS5388694A publication Critical patent/JPS5388694A/en
Publication of JPS6031764B2 publication Critical patent/JPS6031764B2/en
Expired 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Treating Waste Gases (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Abstract

PURPOSE: To convert a CaSO3 slurry formed by absorbing SO2 into gypsum with preventing formation of a by-product dithionic acid by blowing O2 or air into the slurry at prescribed pH in the presence of one more out of sulfates of alkali (earth) metals and NH3.
COPYRIGHT: (C)1978,JPO&Japio
JP52003001A 1977-01-17 1977-01-17 Desulfurization method Expired JPS6031764B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP52003001A JPS6031764B2 (en) 1977-01-17 1977-01-17 Desulfurization method
DE19782800408 DE2800408A1 (en) 1977-01-17 1978-01-05 Calcium sulphite oxidn. to sulphate - in neutral aq. suspension contg. alkali(ne earth) metal-and/or ammonium sulphate, suppressing dithionate formation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52003001A JPS6031764B2 (en) 1977-01-17 1977-01-17 Desulfurization method

Publications (2)

Publication Number Publication Date
JPS5388694A true JPS5388694A (en) 1978-08-04
JPS6031764B2 JPS6031764B2 (en) 1985-07-24

Family

ID=11545117

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52003001A Expired JPS6031764B2 (en) 1977-01-17 1977-01-17 Desulfurization method

Country Status (2)

Country Link
JP (1) JPS6031764B2 (en)
DE (1) DE2800408A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100222305B1 (en) * 1996-12-14 1999-10-01 김의현 Method for hardening of a gypsum

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5771819A (en) * 1980-10-16 1982-05-04 Mitsubishi Heavy Ind Ltd Oxidation of calcium sulfite
DE3240317C2 (en) * 1982-10-30 1986-06-12 Gottfried Bischoff Bau kompl. Gasreinigungs- und Wasserrückkühlanlagen GmbH & Co KG, 4300 Essen Process for the production of calcium sulphate dihydrate in the course of the desulphurisation of flue gases from power plant boiler systems
DE3538136A1 (en) * 1985-10-26 1987-07-02 Hoelter Heinz Recovery of valuable material from the simultaneous SO2 and NOx scrubbing of preferably flue gases downstream of power stations
AT391465B (en) * 1986-08-26 1990-10-10 Donau Chemie Ag Method of processing chloride-rich flue gas desulphurization material (FGD material) to produce cement clinker

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA950169A (en) * 1970-10-26 1974-07-02 Kureha Kagaku Kogyo Kabushiki Kaisha Production of gypsum from combustion exhaust gas
FR2173177B1 (en) * 1972-02-23 1977-09-02 Kureha Chemical Ind Co Ltd
JPS5211680B2 (en) * 1973-03-14 1977-04-01
US3961021A (en) * 1973-09-25 1976-06-01 Kureha Kagaku Kogyo Kabushiki Kaisha Method for removing sulfur dioxide from combustion exhaust gas

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100222305B1 (en) * 1996-12-14 1999-10-01 김의현 Method for hardening of a gypsum

Also Published As

Publication number Publication date
DE2800408A1 (en) 1978-07-27
JPS6031764B2 (en) 1985-07-24

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