| 摘要 |
PROBLEM TO BE SOLVED: To obtain a hydrochloric acid electrolysis device eliminated in the defects of the conventional hydrochloric acid electrolysis device using a gas diffusion electrode short in service life and impossible to attain high decomposition rate, having profitability and capable of attaining high decomposition rate. SOLUTION: The hydrochloric acid electrolysis device is for electrolyzing by mounting a gaseous oxygen diffusion electrode in close contact state in a cathode chamber side and an anode in an anode chamber side across a cation exchange membrane and supplying a hydrochloric acid aq. solution in the anode chamber side and an oxygen-containing gas in the cathode chamber side. The use of the cation exchange membrane leads to prevent the practical transfer of chloride ion, which easily degrades the gas diffusion electrode, from the anode chamber to the cathode chamber and the poisoning of the electrode by chloride ion to prolong the service life of the gas diffusion electrode and to attain low electrolytic pressure. |
