Organic compounds -- part of the class 532-570 series – Organic compounds – Halogen containing
Patent
1994-05-02
2000-08-15
Nguyen, Ngoc-Yen
Organic compounds -- part of the class 532-570 series
Organic compounds
Halogen containing
570165, 570166, 570167, 570168, 570169, 570177, 423240R, 423488, 423241, 95231, 502514, C01C 1708, C01C 1908, B01D 5314
Patent
active
061039446
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).
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Adams Stephen John
Blake Charles Brian
Brierley Rowland John Porter
Doy Ralph Jones
Forsyth James Malcolm
Imperial Chemical Industries plc
Nguyen Ngoc-Yen
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