JPS57205318A - Manufacture of calcium sulfate 0.5 hydrate from combustion exhaust gas - Google Patents
Manufacture of calcium sulfate 0.5 hydrate from combustion exhaust gasInfo
- Publication number
- JPS57205318A JPS57205318A JP57081705A JP8170582A JPS57205318A JP S57205318 A JPS57205318 A JP S57205318A JP 57081705 A JP57081705 A JP 57081705A JP 8170582 A JP8170582 A JP 8170582A JP S57205318 A JPS57205318 A JP S57205318A
- Authority
- JP
- Japan
- Prior art keywords
- hydrate
- manufacture
- exhaust gas
- calcium sulfate
- combustion exhaust
- 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.)
- Pending
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
- B01D53/48—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
-
- 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
- C01F11/466—Conversion of one form of calcium sulfate to another
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B11/00—Calcium sulfate cements
- C04B11/26—Calcium sulfate cements strating from chemical gypsum; starting from phosphogypsum or from waste, e.g. purification products of smoke
- C04B11/262—Calcium sulfate cements strating from chemical gypsum; starting from phosphogypsum or from waste, e.g. purification products of smoke waste gypsum other than phosphogypsum
- C04B11/264—Gypsum from the desulfurisation of flue gases
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Materials Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Structural Engineering (AREA)
- Chemical Kinetics & Catalysis (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)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19813119749 DE3119749C2 (de) | 1981-05-18 | 1981-05-18 | Verfahren zur Herstellung von Calciumsulfathalbhydrat aus Rauchgasgips |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57205318A true JPS57205318A (en) | 1982-12-16 |
Family
ID=6132610
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP57081705A Pending JPS57205318A (en) | 1981-05-18 | 1982-05-17 | Manufacture of calcium sulfate 0.5 hydrate from combustion exhaust gas |
Country Status (3)
Country | Link |
---|---|
JP (1) | JPS57205318A (ja) |
DE (1) | DE3119749C2 (ja) |
NL (1) | NL8202052A (ja) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3534390A1 (de) * | 1985-09-24 | 1987-04-02 | Mannesmann Ag | Verfahren zur herstellung von calciumsulfat - alpha - halbhydrat aus calciumsulfat-dihydrat |
DE3622277A1 (de) * | 1986-07-03 | 1988-01-14 | Bischoff Gasreinigung | Verfahren fuer die herstellung von alphahalbhydratgips aus calciumsulfatdihydrat von rauchgasentschwefelungsanlagen |
DE3634204C1 (de) * | 1986-10-08 | 1988-05-11 | Krc Umwelttechnik Gmbh | Verfahren zur Herstellung von Alpha-Calciumsulfat-Halbhydrat |
EP0294415B1 (de) * | 1986-12-18 | 1990-10-03 | GEBHARD, Georg, Dr. | Verfahren zur in-situ-gewinnung von calciumsulfathalbhydrat und/oder calciumsulfat (anhydrit) aus dem wäscher einer nassen rauchgasentschwefelungsanlage |
DE3709393A1 (de) * | 1987-03-21 | 1988-09-29 | Saarbergwerke Ag | Verfahren zur umwandlung von calciumsulfatdihydrat in (alpha)-halbhydrat |
US5248487A (en) * | 1987-03-21 | 1993-09-28 | Jorg Bold | Process for the conversion of calcium sulfate dihydrate into alpha-hemihydrate |
DE4123258A1 (de) * | 1991-07-13 | 1993-01-14 | Steinmueller Gmbh L & C | Verfahren zum reinigen eines schwefeldioxid und ggf. andere schadstoffe enthaltenden abgases |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4983695A (ja) * | 1972-12-20 | 1974-08-12 | ||
JPS5350092A (en) * | 1976-10-18 | 1978-05-08 | Sumitomo Chem Co Ltd | Production of alpha-type hemihydrate gypsum |
JPS5366894A (en) * | 1976-11-29 | 1978-06-14 | Mitsubishi Heavy Ind Ltd | Production of alpha-type hemihydrate gypsum from absorbing solution of wetlime-gypsum method flue gas desulfurization |
JPS55113621A (en) * | 1979-02-21 | 1980-09-02 | Babcock Hitachi Kk | Manufacture of alpha hemihydrate gypsum |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2803764C2 (de) * | 1978-01-28 | 1983-02-10 | Saarbergwerke AG, 6600 Saarbrücken | Verfahren zur Reinigung von Kohlefeuerungsabgasen |
-
1981
- 1981-05-18 DE DE19813119749 patent/DE3119749C2/de not_active Expired
-
1982
- 1982-05-17 JP JP57081705A patent/JPS57205318A/ja active Pending
- 1982-05-18 NL NL8202052A patent/NL8202052A/nl not_active Application Discontinuation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4983695A (ja) * | 1972-12-20 | 1974-08-12 | ||
JPS5350092A (en) * | 1976-10-18 | 1978-05-08 | Sumitomo Chem Co Ltd | Production of alpha-type hemihydrate gypsum |
JPS5366894A (en) * | 1976-11-29 | 1978-06-14 | Mitsubishi Heavy Ind Ltd | Production of alpha-type hemihydrate gypsum from absorbing solution of wetlime-gypsum method flue gas desulfurization |
JPS55113621A (en) * | 1979-02-21 | 1980-09-02 | Babcock Hitachi Kk | Manufacture of alpha hemihydrate gypsum |
Also Published As
Publication number | Publication date |
---|---|
DE3119749A1 (de) | 1982-12-02 |
DE3119749C2 (de) | 1984-11-08 |
NL8202052A (nl) | 1982-12-16 |
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