GB873453A - Improvements in or relating to the conversion of ammonium thiocyanate to ammonium sulphate - Google Patents
Improvements in or relating to the conversion of ammonium thiocyanate to ammonium sulphateInfo
- Publication number
- GB873453A GB873453A GB39700/58A GB3970058A GB873453A GB 873453 A GB873453 A GB 873453A GB 39700/58 A GB39700/58 A GB 39700/58A GB 3970058 A GB3970058 A GB 3970058A GB 873453 A GB873453 A GB 873453A
- Authority
- GB
- United Kingdom
- Prior art keywords
- thiocyanate
- ammonium
- added
- sulphuric acid
- lye
- 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
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C1/00—Ammonia; Compounds thereof
- C01C1/24—Sulfates of ammonium
- C01C1/245—Preparation from compounds containing nitrogen and sulfur
- C01C1/246—Preparation from compounds containing nitrogen and sulfur from sulfur-containing ammonium compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Industrial Gases (AREA)
Abstract
Ammonium thiocyanate is converted into ammonium sulphate by adding the thiocyanate, in portions or continuously, to sulphuric acid of at least 20% concentration, at a temperature between 90 and 130 DEG C., in such amount or at such a rate that no free thiocyanate ions are present in the reaction mixture for more than 10 seconds. The acid concentration is, preferably 78%, and the thiocyanate may be added as the 20-30% lye obtained by scrubbing out hydrogen cyanide from coke oven or similar gases with an ammonium polysulphide solution. To avoid the reduction of the sulphuric acid concentration, the ammonium thiocyanate may be added as a concentrated solution, slurry, or solid, or fresh sulphuric acid or sulphur trioxide may be added. Carbon oxysulphide, contaminated with HCN and HCNS, is obtained as by-product. These contaminants may be removed by passing the carbon oxysulphide through the unconverted lye.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE873453X | 1957-12-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB873453A true GB873453A (en) | 1961-07-26 |
Family
ID=6816451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB39700/58A Expired GB873453A (en) | 1957-12-21 | 1958-12-09 | Improvements in or relating to the conversion of ammonium thiocyanate to ammonium sulphate |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB873453A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110127702A (en) * | 2019-05-20 | 2019-08-16 | 大连科利德光电子材料有限公司 | Prepare the method and device of carbonyl sulfide gas |
-
1958
- 1958-12-09 GB GB39700/58A patent/GB873453A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110127702A (en) * | 2019-05-20 | 2019-08-16 | 大连科利德光电子材料有限公司 | Prepare the method and device of carbonyl sulfide gas |
| CN110127702B (en) * | 2019-05-20 | 2024-03-19 | 大连科利德光电子材料有限公司 | Method and device for preparing carbonyl sulfide gas |
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