Process for concentration of caustic alkali solution produced by

Details Process for concentration of caustic alkali solution produced by Process for concentration of caustic alkali solution produced by

1978-02-27

1979-03-20

Andrews, R. L.

Chemistry: electrical and wave energy

Processes and products

104128, C25B 116, C25B 126

Patent

active

041452658

ABSTRACT:
In the electrolysis of an alkali metal chloride in an ion exchange membrane type electrolysis cell the dilute caustic alkali solution produced in the cathode compartment is concentrated in a series of heating and evaporating operations wherein it is heated by heat exchange with the hot dilute metal chloride solution removed from the anode compartment. The caustic alkali solution and metal chloride solutions flow countercurrently through the heat exchange steps of the concentrating operations.

REFERENCES:
patent: 3986951 (1976-10-01), Fremont
patent: 4057474 (1977-11-01), Kurtz et al.

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