CPC C01B 7/191 (2013.01) [C01B 7/192 (2013.01); C01B 9/08 (2013.01)] | 6 Claims |
1. A method for producing hydrogen fluoride by reacting calcium fluoride and sulfuric acid, the method comprising:
(a) mixing and reacting calcium fluoride and sulfuric acid such that a mixture comprising calcium fluoride particles and sulfuric acid substantially maintains a particulate form to obtain hydrogen fluoride while supplying sulfuric acid to the calcium fluoride particles at a flow rate of 0.002 to 0.07 mol/min relative to 1 mol of calcium fluoride to such an amount that a molar ratio of sulfuric acid/calcium fluoride is 0.9 to 1.1,
wherein the mixing in step (a) is continued after finishing the supply of sulfuric acid until the reaction between calcium fluoride and sulfuric acid is completed.
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