Patent ID: 8864960

Claim:
A fluorine gas generating apparatus which generates a fluorine gas by electrolyzing hydrogen fluoride in molten salt, comprising: an electrolytic cell including, above a liquid level of molten salt, a first gas chamber into which a product gas mainly containing the fluorine gas generated at an anode immersed in the molten salt and a second gas chamber which is separated from the first gas chamber and into which a byproduct gas mainly containing a hydrogen gas generated at a cathode immersed in the molten salt; a hydrogen fluoride supply source which retains hydrogen fluoride to be replenished in the electrolytic cell; a refining device which traps a hydrogen fluoride gas evaporated from the molten salt in the electrolytic cell and mixed in the product gas generated from the anode to refine the fluorine gas; and a recovery facility which conveys the trapped hydrogen fluoride to the anode side of the electrolytic cell using the product gas as a carrier gas and recovers the hydrogen fluoride trapped in the refining device in the electrolytic cell.