GB605983A - Manufacture of alkali chlorites - Google Patents
Manufacture of alkali chloritesInfo
- Publication number
- GB605983A GB605983A GB623/46A GB62346A GB605983A GB 605983 A GB605983 A GB 605983A GB 623/46 A GB623/46 A GB 623/46A GB 62346 A GB62346 A GB 62346A GB 605983 A GB605983 A GB 605983A
- Authority
- GB
- United Kingdom
- Prior art keywords
- alkali
- chlorine
- alkaline earth
- chlorate
- solution
- 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
- C01B11/00—Oxides or oxyacids of halogens; Salts thereof
- C01B11/08—Chlorous acid
- C01B11/10—Chlorites
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
- Gas Separation By Absorption (AREA)
- Treating Waste Gases (AREA)
Abstract
In the manufacture of an alkali chlorite, a mixture of chlorine and chlorine-dioxide, produced by the action of hydrochloric acid on an alkali and/or alkaline earth chlorate and entrained by air, is caused to undergo particle physical purification of the chlorine dioxide by being mixed with a concentrated solution of an alkali or alkaline earth chloride and/or chlorate, whereby most of the chlorine dioxide and a little chlorine are absorbed, which mixture is then desorbed, e.g. by a current of air, and further purified by being passed through a solution or milk of lime or another alkaline earth base after which the chlorine dioxide is absorbed by an alkali hydroxide and/or carbonate, the products, e.g. sodium chlorite and sodium chlorate thus obtained being separated by crystallisation and, if desired, by evaporation. The chlorates, for the production of which the unabsorbed gases from the partial physical purification may be used, fused in the production of the chlorine dioxide may be previously freed from all or a part of alkali or alkaline earth chlorides. The solution after desorption may be used for absorbing further quantities of the gases, while the gaseous mixture from the desorption tower may be brought into contact with a solution or milk of an alkaline earth hydroxide to produce a gaseous mixture containing only air and chlorine, dioxide and a solution of alkaline earth chloride and chlorate which may be returned to the chlorine dioxide generator, as may be the alkali chlorate separated from the chlorite in the final stage while the mother liquors may be returned to the final absorption.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE605983X | 1943-02-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB605983A true GB605983A (en) | 1948-08-04 |
Family
ID=3875058
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB623/46A Expired GB605983A (en) | 1943-02-27 | 1946-01-07 | Manufacture of alkali chlorites |
Country Status (3)
Country | Link |
---|---|
BE (1) | BE449413A (en) |
FR (1) | FR892820A (en) |
GB (1) | GB605983A (en) |
-
1943
- 1943-02-27 BE BE449413A patent/BE449413A/en unknown
- 1943-03-24 FR FR892820D patent/FR892820A/en not_active Expired
-
1946
- 1946-01-07 GB GB623/46A patent/GB605983A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR892820A (en) | 1944-05-22 |
BE449413A (en) | 1943-03-31 |
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