Patent ID: 8951393
Filing Date: 2015-02-10
Classification: C25B

Abstract:
1. A fluorine gas generating apparatus which generates a fluorine gas by electrolyzing hydrogen fluoride in molten salt, comprising: an electrolytic cell divided above a liquid level of the molten salt into a first gas chamber into which a product gas mainly containing a fluorine gas generated at an anode immersed in the molten salt is led and a second gas chamber into which a byproduct gas mainly containing a hydrogen gas generated at a cathode immersed in the molten salt is led; a refining device configured to refine the fluorine gas by coagulating with a cooling medium and trapping a hydrogen fluoride gas evaporated from the molten salt in the electrolytic cell and mixed in the product gas generated from the anode; a hydrogen fluoride supply passage configured to replenish hydrogen fluoride of a hydrogen fluoride supply source in the electrolytic cell; an entrained gas supply source configured to supply an entrained gas for leading the hydrogen fluoride of the hydrogen fluoride supply source to the electrolytic cell to the hydrogen fluoride supply passage; an entrained gas shut-off valve configured to switch between supply and shut-off of the entrained gas of the entrained gas supply source; and an emergency stop facility configured to operate at emergency stop of the fluorine gas generating apparatus, wherein