Method and apparatus for the production of nitrogen trifluoride

Details Method and apparatus for the production of nitrogen trifluoride Method and apparatus for the production of nitrogen trifluoride

2006-01-17

2006-01-17

Nguyen, Ngoc-Yen (Department: 1754)

Chemistry of inorganic compounds

Nitrogen or compound thereof

Binary compound

C423S489000

Reexamination Certificate

active

06986874

ABSTRACT:
The present invention provides a method and apparatus for producing nitrogen trifluoride. The method comprises contacting a fluorine-containing feed stream with liquid ammonium acid fluoride in a reaction zone for time and under conditions sufficient to produce nitrogen trifluoride. During the contacting step, the effective melt acidity value of the liquid ammonium acid fluoride is decreased and a reaction product stream is removed. In one embodiment, a gaseous mixture of elemental fluorine and hydrogen fluoride is contacted with a bulk liquid ammonium acid fluoride, such that the initial effective melt acidity value is greater than the melt acidity value of the bulk liquid ammonium acid fluoride in the reaction zone.

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