Voltage reduction of membrane cell for the electrolysis of brine

Details Voltage reduction of membrane cell for the electrolysis of brine Voltage reduction of membrane cell for the electrolysis of brine

1976-02-11

1977-08-09

Andrews, R. L.

Chemistry: electrical and wave energy

Processes and products

204128, 204196, C25B 116, C25B 126, C25B 1300

Patent

active

040409198

ABSTRACT:
The voltage drop in a three compartment membrane cell used for the electrolysis of brine is diminished by treatment of the anolyte with acid, preferably hydrochloric acid, lowering the caustic concentration in the buffer zone and decreasing the current density for a period of time, during which the membrane adjacent to the anolyte is rejuvenated, and then resuming normal operations. In a similar manner the voltage drop in a two compartment membrane cell may be reduced, with the lowering of the caustic concentration being effected in the catholyte, preferably by dilution with water.

REFERENCES:
patent: 1309214 (1919-07-01), Moore
patent: 2967807 (1961-01-01), Osborne et al.
patent: 3220941 (1965-11-01), Osborne
patent: 3222267 (1965-12-01), Tirrell et al.
patent: 3467586 (1969-09-01), Grotheer et al.
patent: 3630863 (1971-12-01), Jeffery et al.
patent: 3773634 (1973-11-01), Stacey et al.

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