Patent ID: 6818105
Filing Date: 2004-11-16
Classification: C25B

Abstract:
A fluorine gas generating apparatus for generating fluorine gas of high purity by electrolysis of a mixed molten-salt comprising hydrogen fluoride, the fluorine gas generating apparatus comprising:an electrolytic cell which is separated into an anode chamber and a cathode chamber by a partition wall; a liquid level detecting means, which is provided in at least one of the anode chamber and the cathode chamber of the electrolytic cell, for detecting an upper level and a lower level of liquid level fluctuation of the molten-salt; and a pressure keeping means for supplying gas to the anode chamber and the cathode chamber, respectively, to keep an interior of the anode chamber and an interior of the cathode chamber at a certain pressure, wherein the pressure keeping means is provided with an automatic valve that is opened and closed based on detection results of the liquid level detecting mean, provided in at least one of the anode chamber and the cathode chamber of the electrolytic cell, for detecting an upper level and a lower level of liquid level fluctuation of the molten-salt, so as to supply or discharge the gas to and from the interior of the anode chamber and the interior of the cathode chamber.