GB506394A - Improvements relating to the electrolysis of salt solutions - Google Patents
Improvements relating to the electrolysis of salt solutionsInfo
- Publication number
- GB506394A GB506394A GB32519/37A GB3251937A GB506394A GB 506394 A GB506394 A GB 506394A GB 32519/37 A GB32519/37 A GB 32519/37A GB 3251937 A GB3251937 A GB 3251937A GB 506394 A GB506394 A GB 506394A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acid
- electrolysis
- alkali
- chloride
- chlorine
- 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
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B15/00—Operating or servicing cells
- C25B15/08—Supplying or removing reactants or electrolytes; Regeneration of electrolytes
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
506,394. Electrolysis of alkali chlorides. 1. G. FARBENINDUSTRIE AKT.-GES. Nov. 25, 1937, No. 32519. Convention date, Dec. 31, 1936. [Class 41] Salt solutions containing chlorine and alkali hypochlorite and obtained in the electrolysis of alkali chloride, more especially by the amalgamation process, are treated with an acid such as hydrochloric acid outside the cell to decompose the hypoclilorite, blown out and/or subjected to reduced pressure, and treated with fresh alkali chloride. The acidification and blowing out may be combined by blowing out with a gas which dissolves to form an acid, such as carbon dioxide. A reducing agent may be added, such as sulphurous acid or its salts or hydrogen sulphide, to eliminate residual chlorine or chlorate, and sulphurous acid is preferably used at above 50‹ C. Iron, manganese and calcium salts as well as sulphates may be precipitated by the addition of hydroxides, carbonates, and barium compounds such as barium carbonate. When the chlorine evolved contains hydrogen, this is converted to hydrogen chloride, and the residual chlorine is washed free of hydrogen chloride with the salt solution to be resaturated, which is thereby acidified.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE506394X | 1936-12-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB506394A true GB506394A (en) | 1939-05-25 |
Family
ID=6546544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB32519/37A Expired GB506394A (en) | 1936-12-31 | 1937-11-25 | Improvements relating to the electrolysis of salt solutions |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB506394A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2787591A (en) * | 1949-06-23 | 1957-04-02 | Olin Mathieson | Electrolytic method of depositing alkali metal at a mercury cathode |
| US3115389A (en) * | 1960-12-15 | 1963-12-24 | Ici Ltd | Treatment of brine |
| US4405465A (en) | 1982-06-30 | 1983-09-20 | Olin Corporation | Process for the removal of chlorate and hypochlorite from spent alkali metal chloride brines |
-
1937
- 1937-11-25 GB GB32519/37A patent/GB506394A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2787591A (en) * | 1949-06-23 | 1957-04-02 | Olin Mathieson | Electrolytic method of depositing alkali metal at a mercury cathode |
| US3115389A (en) * | 1960-12-15 | 1963-12-24 | Ici Ltd | Treatment of brine |
| US4405465A (en) | 1982-06-30 | 1983-09-20 | Olin Corporation | Process for the removal of chlorate and hypochlorite from spent alkali metal chloride brines |
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