Methods and reactor designs for producing phosphorus...

C - Chemistry – Metallurgy – 01 – B

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C01B 25/10 (2006.01) B01J 12/00 (2006.01) B01J 19/26 (2006.01) C01B 9/08 (2006.01) C01B 25/455 (2006.01)

Patent

CA 2755327

Processes and systems for the production of phosphorus pentafluoride (PF5) through continuous fluorination of phosphorus are provided herein. A phosphorus feed stream and a fluorine feed stream are provided to a reactor, wherein they are reacted in a gas-gas or liquid-gas reaction to pro-duce phosphorus pentafluoride (PF5). The phosphorus feed can be derived from white phosphorus or yellow phos-phorus, and can be provided to the reac-tor as a liquid or a vapor. The fluorine can be provided to the reactor as a va-por, and preferably comprises elemental fluorine gas.

Cette invention concerne des procédés et des systèmes de production du pentafluorure de phosphore (PF5) par fluoration continue de phosphore. Un courant d'alimentation de phosphore et un courant d'alimentation de fluor sont introduits dans un réacteur où ils réagissent selon une réaction gaz-gaz ou liquide-gaz pour produire du pentafluorure de phosphore (PF5). La charge de phosphore peut provenir du phosphore blanc ou du phosphore jaune, et peut être introduite dans le réacteur sous forme de liquide ou de vapeur. Le fluor peut être introduit dans le réacteur sous forme de vapeur et comprend, de préférence, du fluor élémentaire.

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