Process for the electrolytic treatment of alkali metal halide so

Details Process for the electrolytic treatment of alkali metal halide so Process for the electrolytic treatment of alkali metal halide so

1978-05-12

1980-07-15

Andrews, R. L.

Chemistry: electrical and wave energy

Processes and products

204128, C25B 116, C25B 126

Patent

active

042127122

ABSTRACT:
This invention relates to an apparatus for the electrolytic treatment of alkali halide solution in a three chamber type electrolytic bath assembly comprising an anodic chamber, an intermediate chamber and a cathodic chamber arranged one after another in series. Each chamber is from its neighboring chamber by means of a cationic permselective membrane. The apparatus is characterized, according to this invention, in that the first one of the membranes separating the intermediate and anodic chambers is made of a fluorine-containing resin, while the second membrane separating the intermediate and cathodic chambers includes, as its main ion exchange radial, a pendant type phenolic radical or derivative thereof. The inventive process, which utilizes the above-described apparatus is characterized in that it utilizes a caustic alkali concentration in the intermediate chamber which ranges from about 10-20 wt.% while the output caustic alkali developed at and delivered from the cathodic chamber amounts to a concentration ranging from about 30 to 50 wt.%.

REFERENCES:
patent: 2967807 (1961-01-01), Osborne et al.
patent: 3899403 (1975-08-01), Cook et al.
patent: 4061550 (1977-12-01), Cook et al.

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