GB512907A - Improvements relating to the concentration and decolorization of denitrated spent sulphuric acid - Google Patents
Improvements relating to the concentration and decolorization of denitrated spent sulphuric acidInfo
- Publication number
- GB512907A GB512907A GB847738A GB847738A GB512907A GB 512907 A GB512907 A GB 512907A GB 847738 A GB847738 A GB 847738A GB 847738 A GB847738 A GB 847738A GB 512907 A GB512907 A GB 512907A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acid
- per cent
- hot
- denitrated
- chamber
- 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
- C01B17/69—Sulfur trioxide; Sulfuric acid
- C01B17/90—Separation; Purification
- C01B17/905—Removal of organic impurities
Abstract
512,907. Recovering sulphuric acid. TITLESTAD, N., ALLEN, L. N., and CHEMICAL. CONSTRUCTION CORPORATION. March 18, 1938, No. 8477. [Class 1(ii)] Denitrated spent sulphuric acid is decolorized by blowing superheated steam, either alone or in admixture with other hot gases, into a hot body of the acid which has been previously concentrated to about 90-96 per cent. strength. Spent denitrated acid of about 65 per cent., strength is continuously admitted at 20 into a concentrating chamber 22 in which it is concentrated to 80-85 per cent. by means of hot air admitted through a pipe 12 and valve 13. Acid continuously overflows from this chamber to a chamber 23 in which it is concentrated to 94-96 per cent. by hot gases entering through a valve 14. The acid then passes to a decolorizing chamber 18 where it is subjected to superheated steam generated in a coil 6 and supplied through a pipe 7. The acid is decolorized and its concentration lowered to 92-93 per cent. by a condensation from the steam. Finally, the acid is aerated in a vessel 19 by means of air supplied through a valve 10 which concentrates. it to 93-94 per cent., and is removed to a vessel 15. Alternatively, hot air may be used for the final treatment to obtain an acid of higher concentration. The hot combustion gases are supplied from a furnace 4 which also heats thecoil 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB847738A GB512907A (en) | 1938-03-18 | 1938-03-18 | Improvements relating to the concentration and decolorization of denitrated spent sulphuric acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB847738A GB512907A (en) | 1938-03-18 | 1938-03-18 | Improvements relating to the concentration and decolorization of denitrated spent sulphuric acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB512907A true GB512907A (en) | 1939-09-28 |
Family
ID=9853208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB847738A Expired GB512907A (en) | 1938-03-18 | 1938-03-18 | Improvements relating to the concentration and decolorization of denitrated spent sulphuric acid |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB512907A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4157381A (en) * | 1976-07-22 | 1979-06-05 | Hoechst Aktiengesellschaft | Process for regeneration of sulfuric acid |
| US5275701A (en) * | 1993-03-15 | 1994-01-04 | Air Products And Chemicals, Inc. | Process for purification and concentration of sulfuric acid |
| CN110921691A (en) * | 2019-12-05 | 2020-03-27 | 安徽皖东树脂科技有限公司 | Treatment process of mother liquor pigment in magnesium sulfate production |
-
1938
- 1938-03-18 GB GB847738A patent/GB512907A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4157381A (en) * | 1976-07-22 | 1979-06-05 | Hoechst Aktiengesellschaft | Process for regeneration of sulfuric acid |
| US5275701A (en) * | 1993-03-15 | 1994-01-04 | Air Products And Chemicals, Inc. | Process for purification and concentration of sulfuric acid |
| CN110921691A (en) * | 2019-12-05 | 2020-03-27 | 安徽皖东树脂科技有限公司 | Treatment process of mother liquor pigment in magnesium sulfate production |
| CN110921691B (en) * | 2019-12-05 | 2022-04-22 | 安徽皖东树脂科技有限公司 | Treatment process of mother liquor pigment in magnesium sulfate production |
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