GB299995A - Improvements in the treatment of caustic solutions for the production of solutions and of solid caustic soda of a high degree of purity - Google Patents
Improvements in the treatment of caustic solutions for the production of solutions and of solid caustic soda of a high degree of purityInfo
- Publication number
- GB299995A GB299995A GB2806627A GB2806627A GB299995A GB 299995 A GB299995 A GB 299995A GB 2806627 A GB2806627 A GB 2806627A GB 2806627 A GB2806627 A GB 2806627A GB 299995 A GB299995 A GB 299995A
- Authority
- GB
- United Kingdom
- Prior art keywords
- solutions
- caustic soda
- sodium chloride
- caustic
- sodium
- 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
- C01D1/00—Oxides or hydroxides of sodium, potassium or alkali metals in general
- C01D1/04—Hydroxides
- C01D1/28—Purification; Separation
- C01D1/32—Purification; Separation by absorption or precipitation
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
299,995. Pritchard, D. A., and United Alkali Co., Ltd. Oct. 21, 1927. Caustic soda. - Dilute caustic liquor, e.g. effluent from electrolytic cells, may be purified from sodium chloride by evaporation, and subsequent addition of a salt or salts of sulphuric acids, such as sodium sulphate, or sulphuric acid itself. When metallic sulphates other than sodium are used, the metallic hydroxide formed by reaction with the caustic soda may be separated. The dilute liquor is evaporated until it contains from 37 to 39 per cent of NaO in solution, and the precipitated impurities are removed. The remaining sodium chloride is removed by treating the evaporated solution with sodium sulphate, anhydrous or otherwise, whereby a precipitate is obtained, containing the greater part of the sodium chloride. The clarified liquor may be used as such or evaporated to obtain solid caustic soda. The amount of sulphate added is dependent upon the amount of sodium chloride present.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2806627A GB299995A (en) | 1927-10-21 | 1927-10-21 | Improvements in the treatment of caustic solutions for the production of solutions and of solid caustic soda of a high degree of purity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2806627A GB299995A (en) | 1927-10-21 | 1927-10-21 | Improvements in the treatment of caustic solutions for the production of solutions and of solid caustic soda of a high degree of purity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB299995A true GB299995A (en) | 1928-11-08 |
Family
ID=10269720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2806627A Expired GB299995A (en) | 1927-10-21 | 1927-10-21 | Improvements in the treatment of caustic solutions for the production of solutions and of solid caustic soda of a high degree of purity |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB299995A (en) |
-
1927
- 1927-10-21 GB GB2806627A patent/GB299995A/en not_active Expired
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