Process for electrolytic production of alkali metal chlorate and

Details Process for electrolytic production of alkali metal chlorate and Process for electrolytic production of alkali metal chlorate and

1992-02-05

1994-03-08

Gorgos, Kathryn

Chemistry: electrical and wave energy

Processes and products

204 98, 204128, 423487, 423475, C25B 124

Patent

active

052924068

ABSTRACT:
The present invention relates to a process to limit the content of impurities in the production of alkali metal chlorate, by integrating the production of chlorate with the production of chlorine and alkali metal hydroxide, which auxiliary chemicals are used in the chlorate process. The alkali metal chlorate is produced by electrolysis of a purified electrolyte containing alkali metal chloride, alkalization of the chlorate electrolyte obtained and precipitation of the chlorate formed by evaporation of the chlorate electrolyte. The very pure water separated in the crystallizer and alkali metal chloride is used in a membrane or diaphragm cell in the production of alkali metal hydroxide, which hydroxide is used in the production of alkali metal chlorate. Either pure chlorine or hydrogen chloride absorbed in water can be used in acidification, at which hydrogen chloride is produced from chlorine and hydrogen generated in the process.

REFERENCES:
patent: 3897320 (1975-07-01), Cook, Jr.
patent: 4795535 (1989-01-01), Boldue et al.

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