Process for nitrogen trifluoride synthesis

Details Process for nitrogen trifluoride synthesis Process for nitrogen trifluoride synthesis

C - Chemistry, Metallurgy

01

B

C01B 21/083 (2006.01) C01B 7/19 (2006.01)

Patent

CA 2195908

The present invention is directed to a method for the synthesis of nitrogen trifluoride from elemental fluorine gas and a source of ammonia in a gas-liquid phase reaction comprising; 3F2 + NH4H(x-1)Fx ? NF3 + (3+x) HF wherein the melt ratio HF/NH3 represented by x in the above formula is at least 2.55 and the reaction liquid is agitated or mixed with a mixing apparatus with power input to the mixing apparatus at a high level equivalent to or greater than 1000 watts per cubic meter. This improved synthesis method allows for enhanced nitrogen trifluoride yields of 70% or greater.

a présente invention traite d'une méthode de synthèse en phase gaz-liquide du trifluorure d'azote à partir d'azote natif gazeux et d'une source d'ammoniac, la réaction étant comme suit : 3F2 + NH4H(x-1) Fx ? NF3 + (3+x) HF où le taux de fusion HF/NH3 correspondant à x est d'au moins 2,55 et où le liquide de réaction est agité ou mélangé par un dispositif alimenté à raison d'au moins 1000 watts par m3. Cette méthode améliorée de synthèse permet d'obtenir un rendement en trifluorure d'azote d'au moins 70 %.

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