METHOD AND APPARATUS FOR PRODUCING NITROGEN TRIFLUORIDE

摘要

PROBLEM TO BE SOLVED: To provide a method for producing nitrogen trifluoride at a high yield. SOLUTION: This method comprises bringing a fluorine-containing supplying material flow into contact with liquid acidic ammonium fluoride in a reacting zone for a fixed time and under conditions sufficient to produce nitrogen trifluoride. Through the contact process, an effective melt acidity value of the liquid acidic ammonium fluoride decreases and a reaction product is removed. In one embodiment, a gaseous mixture comprising chemical element fluorine and hydrogen fluoride comes into contact with bulk liquid acidic ammonium fluoride, and the initial effective melt acidity value is larger than that of the bulk liquid acidic ammonium fluoride in the reaction zone.