Process for producing caustic alkalis

Details Process for producing caustic alkalis Process for producing caustic alkalis

1984-11-19

1986-11-11

Niebling, John F.

Chemistry: electrical and wave energy

Processes and products

204128, 204255, 204266, C25B 116

Patent

active

046221131

ABSTRACT:
Process or producing caustic alkalis or alkali hydroxides by electrolysis, employing a double electrode-type electrolysis tank in which a cation exchange membrane is provided to divide the inside of the tank into cathode and anode compartments, supplying to the anode compartment an alkali chloride, supplying water or a dilute solution of an alkali hydroxide into the cathode compartment, and taking away the alkali hydroxide and the hydrogen gas produced by electrolysis, in a mixed state of gas and liquid from the cathode compartment. The electrolysis tank comprises a number of finger-anodes extending from one of the walls of the tank and a number of finger-like hollow cathodes extending from the other wall of the tank, into which the finger-anodes project to form a gap therebetween, and a cation exchange membrane extending through the gap to divide the inside of the tank into cathode and anode compartments.

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