Method for concentration and purification of a cell liquor in an

Details Method for concentration and purification of a cell liquor in an Method for concentration and purification of a cell liquor in an

1975-12-29

1977-07-19

Andrews, R. L.

Chemistry: electrical and wave energy

Processes and products

Processes of treating materials by wave energy

204 98, 204129, C25B 102, C25B 116

Patent

active

040367177

ABSTRACT:
Disclosed is a method and apparatus for the concentration and purification of a cell liquor containing sodium or potassium hydroxide wherein the three compartment electrolytic cell has a porous catalytic anode, a porous asbestos diaphragm separating the anode compartment and a central compartment having a stratification network, a cation-exchange membrane separating the central compartment and a cathode compartment having cathode disposed therein such that an electrolyzing current may be passed between the anode and cathode. Hydrogen gas emanating from the cathode and anode compartments is fed into the porous catalytic anode to decrease the potential across the cell below the evolution potential for chlorine and coincidentally reduce the power requirements of the cell, which is operated at elevated temperatures.

REFERENCES:
patent: 3017338 (1962-01-01), Butler et al.
patent: 3124520 (1964-03-01), Juda
patent: 3135673 (1964-06-01), Tirrell et al.
patent: 3222267 (1965-12-01), Tirrell et al.

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