| 摘要 |
PROBLEM TO BE SOLVED: To effectively enable the starting of an operation of ion exchange membrane electrolysis vessel having a gas diffusion electrode. SOLUTION: In this operation starting method in ion exchange membrane electrolysis vessel for electrolysis of halogenated alkali metal aqueous solution, the gas diffusion electrode is arranged in a cathode chamber of the ion exchange membrane electrolysis vessel which is divided to an anode chamber and the cathode chamber by cation exchange membrane and a hydrophilic liquid permeation layer is disposed between the cation exchange membrane and the gas diffusion electrode. Therein further, the anode chamber is filled with halogenated alkali metal aqueous solution, at the same time, the hydrophilic liquid permeation layer is filled with alkali metal hydroxide aqueous solution, thereafter, oxygen-containing gas is supplied into a gas chamber and the energizing is started. |
