Cathode restoration

Details Cathode restoration Cathode restoration

1990-11-13

1993-04-27

Niebling, John

Chemistry: electrical and wave energy

Processes and products

204128, 204129, 204282, 204292, 204293, 148284, 148287, C25B 1500

Patent

active

052059111

ABSTRACT:
Chlor-alkali electrolytic cells can have separators used with metal cathodes. These cells may often be subject to frequent current interruptions. Particularly where the cathode and separator exhibit extended life, these interruptions may be numerous. There has now been developed a method for providing successful and desirable cathode operation even for such extended cell life. During cell shutdown, the cathode and separator are subjected to an elevated temperature heat treatment. After heating, and optionally following any rewetting of the diaphragm, the cathode is ready in the cell for continued, rejuvenated performance.

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patent: 4410411 (1983-10-01), Fenn, III et al.
patent: 4539083 (1985-09-01), Samejima et al.
patent: 4720334 (1988-01-01), Dubois et al.
patent: 4853101 (1989-08-01), Hruska et al.

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