Water separation process

Details Water separation process Water separation process

1992-12-09

1994-08-02

Siegel, Alan

Organic compounds -- part of the class 532-570 series

Organic compounds

Halogen containing

570166, 570167, 570168, 570169, 570177, C07C 1708, C07C 1908

Patent

active

053347846

ABSTRACT:
Water present in a hot gaseous product stream from a reactor system A,B (FIG. 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 bottoms 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 (FIGS. 2 to 4), a control system for the liquid HF supply to the distillation column (FIGS. 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 (FIG. 7 ).

REFERENCES:
patent: 3218364 (1965-11-01), Kometani et al.
patent: 3300538 (1967-01-01), Kometani et al.
patent: 3792104 (1974-12-01), Mueller
patent: 5208398 (1993-05-01), Wismer
patent: 5243105 (1993-09-01), Scott et al.

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