GB385352A - Improvements in the purification of sulphur - Google Patents
Improvements in the purification of sulphurInfo
- Publication number
- GB385352A GB385352A GB2374831A GB2374831A GB385352A GB 385352 A GB385352 A GB 385352A GB 2374831 A GB2374831 A GB 2374831A GB 2374831 A GB2374831 A GB 2374831A GB 385352 A GB385352 A GB 385352A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acid
- sulphur
- treatment
- per cent
- sulphuric acid
- 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
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/02—Preparation of sulfur; Purification
- C01B17/0232—Purification, e.g. degassing
Abstract
Solutions of sulphur obtained by extracting gas purifying materials are freed from contaminating tarry or other organic matter by treatment with strong sulphuric acid containing nitric acid, or with chlorosulphonic acid, sulphur trioxide or fuming sulphuric acid. When using the last named, vigorous agitation is applied and the amount of acid used should not exceed 5 per cent by volume and should preferably be 1 per cent or less. Alternatively, the solution of crude sulphur may be added to the fuming sulphuric acid in batches, water being previously removed and normal or only slightly elevated temperatures being maintained; each batch of treated solution is removed before another is added. Sulphur dioxide and acid contained in the purified solution, may be removed by treatment with ammonium sulphite, alone or mixed with bisulphite, or by treatment with adsorption agents such as active carbon, oxide gels or adsorbent clays, or with calcium hydroxide containing up to 50 per cent of water. Examples of the various treatments are furnished.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US646974A US1926829A (en) | 1931-08-24 | 1932-12-13 | Purification of sulphur |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB216433A GB409098A (en) | 1933-01-23 | 1933-01-23 | Improvements in the manufacture and production of pure sulphur |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB385352A true GB385352A (en) | 1932-12-29 |
Family
ID=9734699
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2374831A Expired GB385352A (en) | 1931-08-24 | 1931-08-24 | Improvements in the purification of sulphur |
| GB216433A Expired GB409098A (en) | 1931-08-24 | 1933-01-23 | Improvements in the manufacture and production of pure sulphur |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB216433A Expired GB409098A (en) | 1931-08-24 | 1933-01-23 | Improvements in the manufacture and production of pure sulphur |
Country Status (1)
| Country | Link |
|---|---|
| GB (2) | GB385352A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2689783A (en) * | 1950-03-28 | 1954-09-21 | Montedison Spa | Continuous process for purifying raw sulfur |
-
1931
- 1931-08-24 GB GB2374831A patent/GB385352A/en not_active Expired
-
1933
- 1933-01-23 GB GB216433A patent/GB409098A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2689783A (en) * | 1950-03-28 | 1954-09-21 | Montedison Spa | Continuous process for purifying raw sulfur |
Also Published As
| Publication number | Publication date |
|---|---|
| GB409098A (en) | 1934-04-26 |
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