Hydrogen fluoride recovery process

C - Chemistry – Metallurgy – 01 – B

Patent

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C01B 7/19 (2006.01)

Patent

CA 2234693

A process for separating and recovering hydrogen fluoride from a mixture with an organic compound especially a fluorine-containing compound by extraction with a solution of an alkali metal fluoride in hydrogen fluoride, phase separation and recovery. A process for producing a fluorine-containing organic compound by fluorinating a starting material with hydrogen fluoride and similarly recovering hydrogen fluoride from the product stream. The solution may be anhydrous or aqueous.

L'invention se rapporte à un procédé de séparation et de récupération de fluorure d'hydrogène dans un mélange d'un composé organique, en particulier d'un composé contenant du fluor, par extraction avec une solution d'un fluorure alcalin dans du fluorure d'hydrogène, par séparation des phases et récupération. L'invention se rapporte également à un procédé de production d'un composé organique contenant du fluor par fluoruration d'un matériau de départ avec le fluorure d'hydrogène et, de manière similaire, par récupération du fluorure d'hydrogène du courant de produit. La solution peut être anhydre ou aqueuse.

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