GB378684A - Process for the production of alkali sulphates and sulphur - Google Patents
Process for the production of alkali sulphates and sulphurInfo
- Publication number
- GB378684A GB378684A GB27032/31A GB2703231A GB378684A GB 378684 A GB378684 A GB 378684A GB 27032/31 A GB27032/31 A GB 27032/31A GB 2703231 A GB2703231 A GB 2703231A GB 378684 A GB378684 A GB 378684A
- Authority
- GB
- United Kingdom
- Prior art keywords
- alkali
- sulphur
- ammonium
- precipitated
- bisulphites
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D5/00—Sulfates or sulfites of sodium, potassium or alkali metals in general
- C01D5/04—Preparation of sulfates with the aid of sulfurous acid or sulfites, e.g. Hargreaves process
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Treating Waste Gases (AREA)
Abstract
Sulphur and alkali or ammonium sulphates are obtained from alkali or ammonium bisulphites, from mixtures containing these, or from sulphur dioxide with the intermediate formation of such bisulphites, by reacting them with calcium or other alkaline-earth metal sulphide in aqueous solution, separating the deposited alkaline-earth metal sulphite precipitated, and heating the remaining solution containing neutral alkali sulphite, alkali thiosulphate and alkali-trithionate at temperatures of about 80-180 DEG C. under the pressure spontaneously produced in the reaction vessel or under higher pressure. The CaSO3,2H2O precipitated in the reaction may be reconverted into calcium sulphide for further use by heating with solid, liquid or gaseous carbonaceous reducing agents. Sulphur dioxide may be reacted with gaseous ammonia in the presence of sufficient water vapour or finely divided water to form ammonium bisulphite which is separated in the solid form by an electrostatic field or in a bag filter and is then employed in the above process.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE378684X | 1931-05-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB378684A true GB378684A (en) | 1932-08-18 |
Family
ID=6344574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB27032/31A Expired GB378684A (en) | 1931-05-13 | 1931-09-28 | Process for the production of alkali sulphates and sulphur |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB378684A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4039649A (en) * | 1974-08-14 | 1977-08-02 | Institut Francais Du Petrole | Process for removing sulfur from waste waters containing sulfuric acid |
| US4058591A (en) * | 1974-09-05 | 1977-11-15 | Institut Francais Du Petrole | Process for purifying waste water containing ammonium sulfate |
-
1931
- 1931-09-28 GB GB27032/31A patent/GB378684A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4039649A (en) * | 1974-08-14 | 1977-08-02 | Institut Francais Du Petrole | Process for removing sulfur from waste waters containing sulfuric acid |
| US4058591A (en) * | 1974-09-05 | 1977-11-15 | Institut Francais Du Petrole | Process for purifying waste water containing ammonium sulfate |
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