JPS5388694A - Calcium sulfite oxidizing method - Google Patents
Calcium sulfite oxidizing methodInfo
- 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
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
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)
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)
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)
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 |
DE2308783C3 (en) * | 1972-02-23 | 1979-07-26 | Kureha Kagaku Kogyo K.K., Tokio | Process for removing sulfur dioxide from exhaust gases |
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 |
-
1977
- 1977-01-17 JP JP52003001A patent/JPS6031764B2/en not_active Expired
-
1978
- 1978-01-05 DE DE19782800408 patent/DE2800408A1/en not_active Withdrawn
Cited By (1)
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 |
---|---|
JPS6031764B2 (en) | 1985-07-24 |
DE2800408A1 (en) | 1978-07-27 |
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