Process for the manufacture of pentafluoroethane

PCT No. PCT/GB95/01872 Sec. 371 Date Feb. 18, 1997 Sec. 102(e) Date Feb. 18, 1997 PCT Filed Aug. 8, 1995 PCT Pub. No. WO96/06062 PCT Pub. Date Feb. 29, 1996Process for the manufacture of pentafluoroethane [HFC 125] by reaction of perchloroethylene with hydrogen fluoride in the vapor phase over a flu...

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Hauptverfasser:	SHIELDS, CHARLES JOHN, EWING, PAUL NICHOLAS
Format:	Patent
Sprache:	eng
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS APPARATUS THEREFOR CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY GENERAL METHODS OF ORGANIC CHEMISTRY METALLURGY ORGANIC CHEMISTRY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR RELEVANT APPARATUS TRANSPORTING
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Zusammenfassung:	PCT No. PCT/GB95/01872 Sec. 371 Date Feb. 18, 1997 Sec. 102(e) Date Feb. 18, 1997 PCT Filed Aug. 8, 1995 PCT Pub. No. WO96/06062 PCT Pub. Date Feb. 29, 1996Process for the manufacture of pentafluoroethane [HFC 125] by reaction of perchloroethylene with hydrogen fluoride in the vapor phase over a fluorination catalyst in a fluorination reactor with recycle of dichlorotrifluoroethane [HCFC 123] and chlorotetrafluoroethane [HCFC 124] to the fluorination reactor, wherein tetrafluoroethane [HFC 134a] is also recycled to the fluorination reactor. The tetrafluoroethane and the chlorotetrafluoroethane can both be separated from the product stream in a single distillation column and recycled, together to the fluorination reactor.