METHOD FOR PRODUCING HYDROGEN FLUORIDE

摘要

Provided is a novel method for producing hydrogen fluoride, wherein adhesion is reduced and heat transfer properties are improved by suppressing the occurrence of pastiness throughout the hydrogen fluoride production process, high energy efficiency is achieved and little corrosion occurs by carrying out a reaction at a low temperature. This method for producing hydrogen fluoride by reacting calcium fluoride with sulfuric acid includes (a) a step in which hydrogen fluoride is obtained by supplying sulfuric acid to calcium fluoride particles at a quantity whereby the flow quantity of sulfuric acid is 0.002-1 mol/min relative to 1 mol of calcium fluoride and the sulfuric acid/calcium fluoride molar ratio is 0.9-1.1, while mixing and reacting the calcium fluoride and the sulfuric acid in such a way that a mixture consisting of the calcium fluoride and the sulfuric acid remains substantially particulate.