Process for removing chlorate salt from aqueous alkali...

C - Chemistry – Metallurgy – 01 – B

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C01B 7/07 (2006.01) C01D 3/06 (2006.01) C01D 3/14 (2006.01) C25B 15/08 (2006.01)

Patent

CA 2056243

Abstract of the Disclosure: Process for removing a chlorate salt from an aqueous alkali chloride solution to be subjected to a cation-exchange membrane electrolysis, comprising preparing a reaction solution by adding hydrochloric acid to the aqueous alkali chloride solution, and keeping the reaction solution at an absolute pressure of not higher than 600 mmHg and not lower than the saturated vapor pressure of the solution in a decomposition vessel, and/or feeding the reaction solution to the bottom portion of a decomposition vessel and flowing the reaction solution upward therefrom.

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