GB597564A - Method for purifying the electrolytes used in the electrolysis of alkali metal chlorides employing a mercury cathode - Google Patents
Method for purifying the electrolytes used in the electrolysis of alkali metal chlorides employing a mercury cathodeInfo
- Publication number
- GB597564A GB597564A GB23105/45A GB2310545A GB597564A GB 597564 A GB597564 A GB 597564A GB 23105/45 A GB23105/45 A GB 23105/45A GB 2310545 A GB2310545 A GB 2310545A GB 597564 A GB597564 A GB 597564A
- Authority
- GB
- United Kingdom
- Prior art keywords
- liquor
- carbon
- hcl
- free chlorine
- metal chlorides
- 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
- C01D3/00—Halides of sodium, potassium or alkali metals in general
- C01D3/14—Purification
- C01D3/16—Purification by precipitation or adsorption
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
Electrolytic cell liquor containing alkali-metal chlorides is purified by passing at 10 DEG -100 DEG C. through a layer of porous carbon such as active carbon, charcoal or coke to eliminate free chlorine and hypochlorites. To remove the chlorates present oxidisable substances such as ferrous chloride may be added to the liquor together with hydrochloric acid. Catalysts such as oxides or hydrates of iron may be added to the liquor or carbon to accelerate the reactions. Partial dechlorination may be effected by passing finely divided air or other inert gas through the liquor which may be first acidified with HCl the liquor being then treated as above. The chlorinated gases from the partial dechlorination may be passed upwardly through porous carbon as water streams down to produce HCl. This latter contains free chlorine and is passed through further carbon to transform completely the free chlorine into HCl.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR597564X | 1944-05-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB597564A true GB597564A (en) | 1948-01-28 |
Family
ID=8968321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB23105/45A Expired GB597564A (en) | 1944-05-17 | 1945-09-07 | Method for purifying the electrolytes used in the electrolysis of alkali metal chlorides employing a mercury cathode |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB597564A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2081024A1 (en) * | 1970-02-20 | 1971-11-26 | Ici Ltd |
-
1945
- 1945-09-07 GB GB23105/45A patent/GB597564A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2081024A1 (en) * | 1970-02-20 | 1971-11-26 | Ici Ltd |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB1342222A (en) | Process for the removal of mercury from gases | |
| GB885818A (en) | Improvements in or relating to the treatment of brine solutions | |
| GB456536A (en) | The manufacture of new fluorine compounds | |
| GB793700A (en) | Improvements in or relating to the thermal decomposition of certain chlorides and sulphates | |
| US2750002A (en) | Method for chlorine recovery | |
| US4323437A (en) | Treatment of brine | |
| US3453187A (en) | Apparatus and process for reduction of hydrogen chloride | |
| IE49567B1 (en) | Continuous process for the removal of sulphur dioxide from waste gases,and hydrogen and sulphuric acid produced thereby | |
| GB925119A (en) | Improvements in or relating to the recovery of fluorine as hydrofluoric acid from the waste products of electrolytic aluminium production | |
| GB597564A (en) | Method for purifying the electrolytes used in the electrolysis of alkali metal chlorides employing a mercury cathode | |
| GB1263231A (en) | Atmospheric control utilizing an electrolytic carbon dioxide concentrator | |
| GB716681A (en) | Process for the production of titanium tetrachloride | |
| GB844115A (en) | Chlorine recovery | |
| US1781830A (en) | Process for fixing or recovering chlorine | |
| US3056270A (en) | Process for preparation of pure chlorine dioxide | |
| GB655098A (en) | Improvements in or relating to electrolysis of fluorine salts | |
| GB797994A (en) | Purification of gases | |
| US2260881A (en) | Process for the recovery of hydrocyanic acid | |
| US2273723A (en) | Recovery of chlorine from gaseous mixtures | |
| US3514381A (en) | Cyclic process for the fabrication of sodium carbonate and of chlorine | |
| GB1286570A (en) | Process for recovery of iodine | |
| GB393690A (en) | Improvements in the manufacture and production of acetaldehyde from acetylene | |
| GB850345A (en) | Electrolysis of alkali chloride solutions | |
| US3560353A (en) | Electrolysis cell current efficiency with oxygen-containing gases | |
| GB281491A (en) | Improvements in the manufacture and production of anhydrous chlorides and hydrogen chloride |