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1. (WO2010119918) ELECTROLYSIS METHOD USING TWO-CHAMBER ION-EXCHANGE MEMBRANE SODIUM CHLORIDE ELECTROLYTIC CELL EQUIPPED WITH GAS DIFFUSION ELECTRODE

Pub. No.:    WO/2010/119918    International Application No.:    PCT/JP2010/056744
Publication Date: Fri Oct 22 01:59:59 CEST 2010 International Filing Date: Fri Apr 16 01:59:59 CEST 2010
IPC: C25B 15/02
C25B 1/16
C25B 9/00
Applicants: CHLORINE ENGINEERS CORP., LTD.
クロリンエンジニアズ株式会社
KANEKA CORPORATION
株式会社カネカ
TOAGOSEI CO., LTD.
東亞合成株式会社
SUGIYAMA Mikihito
杉山 幹人
IGUCHI Yukinori
井口 幸徳
ASAUMI Kiyohito
浅海 清人
Inventors: SUGIYAMA Mikihito
杉山 幹人
IGUCHI Yukinori
井口 幸徳
ASAUMI Kiyohito
浅海 清人
Title: ELECTROLYSIS METHOD USING TWO-CHAMBER ION-EXCHANGE MEMBRANE SODIUM CHLORIDE ELECTROLYTIC CELL EQUIPPED WITH GAS DIFFUSION ELECTRODE
Abstract:
Disclosed is an electrolysis method, whereby sodium chloride concentration of an aqueous caustic soda solution formed through electrolysis in a two-chamber ion-exchange membrane sodium chloride electrolytic cell, which is equipped with a gas diffusion electrode as a cathode and divided into an anode chamber containing an anode and a cathode gas chamber containing the cathode that are partitioned by an ion-exchange membrane, is lowered. In a two-chamber ion-exchange membrane electrolytic cell (1) using a gas diffusion electrode (7), electrolysis is performed while reducing the pressure difference between the liquid pressure in the anode chamber and the gas pressure in the cathode gas chamber, i.e., the pressure calculated by subtracting [oxygen-containing gas pressure in cathode chamber (measured by manometer (18))] or [gas pressure at oxygen-containing gas inlet (14)] from [(liquid pressure in anode chamber applied to ion-exchange membrane when anode chamber is filled up with aqueous sodium chloride solution) being equal to (depth of aqueous sodium chloride solution)×(density of aqueous sodium chloride solution)/2].