Process for the electrolytic treatment with ion exchange...

Details Process for the electrolytic treatment with ion exchange... Process for the electrolytic treatment with ion exchange...

C - Chemistry, Metallurgy

25

B

204/156

C25B 9/00 (2006.01) C08J 5/22 (2006.01) C25B 1/46 (2006.01)

Patent

CA 1094506

Abstract of the Disclosure This invention relates to a plant for the electrolytic treat- ment of alkali halide solution in a three-chamber type electrolytic bath assembly comprising an anodic chamber, a cathodic chamber, and an intermediate chamber located therebetween. These chambers are separated by means of anodic ion-exchange membranes. The apparatus is character- ized by the membrane separating the intermediate and anode chambers being made of a fluorine-containing resin, while the second membrane separating the intermediate and cathode chambers includes, as its main ion-exchange radicals, pendant type phenolic radicals or derivatives thereof. In use, the plant conditions are adjusted so that the caustic alkali concentration in the intermediate chamber is set to 10 - 20 weight % and the output caustic alkali developed at and delivered from the cathode chamber amounts to a concentration from 30 to 50 weight %.

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