Membrane electrolysis cell

Details Membrane electrolysis cell Membrane electrolysis cell

1983-05-25

1984-09-04

Williams, Howard S.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204258, 204282, 204288, C25B 902, C25B 1103

Patent

active

044695772

ABSTRACT:
The invention relates to a membrane electrolysis cell of the filter press type with one or more plate-type electrode pairs, each comprising at least one non-continuous active central part, with a membrane provided between the electrode pairs, and with a seal installed between each electrode and membrane rim. The membrane cell is suitable for the production of an aqueous alkali metal hydroxide solution (cell liquor) as well as of halogen and hydrogen by electrolyzing an aqueous halide-bearing electrolyte (brine).
The non-continuous central part of the electrodes has a grid-type structure, the grid rods of the electrode pairs are staggered by a maximum of half the rod width, the grid rods of the electrodes are arranged so that their interspace is smaller than the projection of their width, the grid rods have a convex face at least on the active side, and the thickness of the seals between the electrode and membrane rims is equal or inferior to the height of the grid rod portion protruding over the electrode rim.

REFERENCES:
patent: 3661756 (1972-05-01), Spoon
patent: 3875040 (1975-04-01), Weltin et al.
patent: 4013525 (1977-03-01), Emsley
patent: 4013535 (1977-03-01), White
patent: 4013537 (1977-03-01), White
patent: 4175025 (1979-11-01), Creamer et al.
patent: 4211628 (1980-07-01), Obata et al.
patent: 4313812 (1982-02-01), Kircher

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