Process for the manufacture of pentafluoroethane

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...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: SHIELDS, CHARLES JOHN, EWING, PAUL NICHOLAS
Format: Patent
Sprache:eng
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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.