Process for chloro-alkali electrolysis cell

Details Process for chloro-alkali electrolysis cell Process for chloro-alkali electrolysis cell

1979-04-02

1980-08-12

Andrews, R. L.

Chemistry: electrical and wave energy

Processes and products

204128, C25B 134

Patent

active

042171865

ABSTRACT:
An improved process and apparatus for pH control and energy savings in chlor-alkali electrolysis cells is disclosed wherein a fuel cell type spaced porous catalytic anode is utilized to chemically oxidize a controlled, sub stoichiometric amount of hydrogen to provide hydrogen ions to a recirculating anolyte. The pH is monitored and the flow of hydrogen fuel adjusted to provide a resultant desired pH in the range of about 2 to about 4. Optionally, hydrogen gas produced at the cell cathode may comprise the fuel supply and a spaced porous catalytic cathode may be employed for hydrogen supply control and depolarization.

REFERENCES:
patent: 3124520 (1964-03-01), Juda
patent: 3282834 (1966-11-01), Justi et al.
patent: 3793163 (1974-02-01), Dotson
patent: 4035254 (1977-07-01), Gritzner
patent: 4035255 (1977-07-01), Gritzner

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