GB1241575A - Process for converting gypsum to calcium sulphide and apparatus therefor - Google Patents

Process for converting gypsum to calcium sulphide and apparatus therefor

Info

Publication number
GB1241575A
GB1241575A GB4002068A GB4002068A GB1241575A GB 1241575 A GB1241575 A GB 1241575A GB 4002068 A GB4002068 A GB 4002068A GB 4002068 A GB4002068 A GB 4002068A GB 1241575 A GB1241575 A GB 1241575A
Authority
GB
United Kingdom
Prior art keywords
sulphide
calcium
calcium sulphide
apparatus therefor
aug
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
GB4002068A
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.)
Elk Corp
Original Assignee
Elk 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 Elk Corp filed Critical Elk Corp
Publication of GB1241575A publication Critical patent/GB1241575A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B17/00—Sulfur; Compounds thereof
    • C01B17/42—Sulfides or polysulfides of magnesium, calcium, strontium, or barium
    • C01B17/44—Sulfides or polysulfides of magnesium, calcium, strontium, or barium by reduction of sulfates

Landscapes

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

Abstract

1,241,575. Calcium sulphide; hydrogen sulphide. ELCOR CHEMICAL CORP. 21 Aug., 1968 [23 Aug., 1967], No. 40020/68. Heading C1A. [Also in Divisions B and F4] Calcium sulphide which has been prepared by reducing calcium sulphate with gases at 1500‹ F. to 1800‹ F. is cooled to below 700‹ F. by contact with water under pressure, e.g. 10 to 100 p.s.i.g., the water being at such a pressure that steam formation is substantially prevented. The reduction preferably takes place at 10 to 100 p.s.i.g. Hydrogen sulphide may be formed by passing carbon dioxide through the calcium sulphide slurry. Apparatus in which the process is carried out is also described (see Division B1).
GB4002068A 1967-08-23 1968-08-21 Process for converting gypsum to calcium sulphide and apparatus therefor Expired GB1241575A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US66265067A 1967-08-23 1967-08-23

Publications (1)

Publication Number Publication Date
GB1241575A true GB1241575A (en) 1971-08-04

Family

ID=24658587

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4002068A Expired GB1241575A (en) 1967-08-23 1968-08-21 Process for converting gypsum to calcium sulphide and apparatus therefor

Country Status (1)

Country Link
GB (1) GB1241575A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2163739A (en) * 1984-08-31 1986-03-05 Hitachi Shipbuilding Eng Co Exhaust gas desulphurisation and treatment of CaSOx solids produced therein

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2163739A (en) * 1984-08-31 1986-03-05 Hitachi Shipbuilding Eng Co Exhaust gas desulphurisation and treatment of CaSOx solids produced therein
FR2569679A1 (en) * 1984-08-31 1986-03-07 Hitachi Shipbuilding Eng Co TREATMENT OF SOLIDS CONTAINING SULFURIC OXYACID CALCIUM SALT, AND PROCESS FOR PURIFYING EXHAUST GAS USING THE TREATMENT

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