Water separation process

Details Water separation process Water separation process

C - Chemistry, Metallurgy

07

C

C07C 19/08 (2006.01) B01D 53/26 (2006.01) B01D 53/68 (2006.01) C07C 17/20 (2006.01) C07C 17/21 (2006.01) C07C 17/38 (2006.01)

Patent

CA 2124933

2124933 9311853 PCTABS00022 Water present in a hot gaseous product stream from a reactor system (A, B) (Figure 1) containing hydrogen fluoride is separated from the stream in order to eliminate a potentially corrosive combination of water and HF. The water is removed by contacting the gaseous product stream with liquid HF in a distillation column so as to obtain a bottom product containing liquid HF and water and a top product containing dry HF and the product to be recovered. The invention encompasses the separation process, a vessel for carrying out the process (Figures 2 to 4), a control system for the liquid HF supply to the distillation column (Figures 5 and 6) and a recovery system for recovering HF employed during operation of the reactor system in different regimes employing HF as a fluorination agent, as a diluent during catalyst regeneration and/or catalyst prefluorination (Figure 7).

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