Membrane electrolysis cell

Details Membrane electrolysis cell Membrane electrolysis cell

C - Chemistry, Metallurgy

25

B

204/155.5

C25B 9/02 (2006.01) C25B 1/46 (2006.01) C25B 9/20 (2006.01) C25B 11/02 (2006.01)

Patent

CA 1204408

Abstract of the Disclosure Disclosed is 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 for between the electrode pair(s), 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 pair(s) 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 beyond the plane of the electrode rim.

428814

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