Kanegafuchi Kagaku Kogyo Kabushiki Kaisha

Tsutomu Nishio, Deceased

Toshiji Kano

Yasushi Samejima

Minoru Shiga

Koji Saiki

Kiyoshi Yamada

Disclosed is an electrolytic process using a horizontal type cation exchange membrane electrolytic cell in which catholyte liquor is supplied into a cathode compartment with initial linear velocity of at least 8 cm/sec and gas content of at most 0.6 at a catholyte liquor outlet. Also disclosed is an electrolytic cell used for the foregoing process. The invention enables not only conversion of a mercury electrolytic cell to a cation exchange membrane electrolytic cell with low cost, but the long-term and stable operation.

Electrolytic process of an aqueous alkali metal halide solution and

Disclosed is a vertical type electrolytic cell partitioned by an ion exchange membrane into an anode compartment and a cathode compartment, the cathode compartment being divided by a non-perforated cathode plate into a cathode gas generation room and a cathode gas separation room. Also disclosed is an electrolytic process using the electrolytic cell wherein the catholyte is circulated between the two rooms as a result of a gas lift effect produced by the cathode gas.

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Kakogawa, Japan

Tsutomu Nishio, Deceased