公开(公告)号：US09890062B2

公开(公告)日：2018-02-13

申请号：US14902363

申请日：2014-07-24

申请人： INDUSTRIE DE NORA S.p.a.

发明人： Akiyoshi Manabe ,  Yoshinori Nishiki ,  Akira Kunimatsu

IPC分类号： C02F1/46 ,  C02F1/461 ,  B01D59/40 ,  C01B5/02 ,  C25B1/04 ,  C01B13/02

CPC分类号： C02F1/461 ,  B01D59/40 ,  C01B5/02 ,  C01B13/0207 ,  C02F2001/4619 ,  C02F2201/46185 ,  C25B1/04 ,  G21F9/007 ,  G21F9/08 ,  Y02E60/366

摘要： An electrolytic enrichment method for heavy water includes enriching heavy water by electrolysis using an alkaline water electrolysis cell including an anode chamber that holds an anode, a cathode chamber that holds a cathode, and a diaphragm. In the method, an electrolyte prepared by adding high-concentration alkaline water to raw material water containing heavy water is circularly supplied to the anode chamber and the cathode chamber from a circulation tank; an anode-side gas-liquid separator and an anode-side water-seal device are connected to the anode chamber, and a cathode-side gas-liquid separator and a cathode-side water-seal device are connected to the cathode chamber; and electrolysis is continued while the alkali concentration in the electrolyte supplied to both electrolysis chambers is maintained at a constant concentration by circularly supplying, to the circulation tank, the electrolyte from which the gas generated from the anode-side gas-liquid separator and the cathode-side gas-liquid separator is separated.