发明名称 |
Process for the electrolysis of alkali metal chloride solutions |
摘要 |
A process is described for electrolyzing aqueous alkali metal chloride solutions in a membrane cell which contains an anode chamber with the anode and a cathode chamber with the cathode, the two chambers being separated from one another by a cation exchanger membrane. The cathode is porous and foil-like. The cathode and cation exchanger membrane form the actual cathode chamber filled with catholyte and the cathode and cell wall form a gas space. Water is fed into the cathode chamber and alkali metal hydroxide solution is withdrawn from it, hydrogen is withdrawn from the cathode chamber and gas space, and aqueous alkali metal chloride solution is fed into the anode chamber and gaseous chlorine, together with depleted alkali metal chloride solution, is withdrawn from it. A direct voltage which is at least the same as the decomposition voltage is applied to the cathode and anode. A higher pressure is established in the cathode chamber than in the gas space.
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申请公布号 |
US4790915(A) |
申请公布日期 |
1988.12.13 |
申请号 |
US19870002142 |
申请日期 |
1987.01.12 |
申请人 |
HOECHST AKTIENGESELLSCHAFT |
发明人 |
WINSEL, AUGUST;STAAB, RUDOLF;MEDIC, NIKOLAJ |
分类号 |
C25B1/46;C25B11/04;(IPC1-7):C25B1/00 |
主分类号 |
C25B1/46 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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