Process for separating pentafluoroethane from a mixture of halog

Details Process for separating pentafluoroethane from a mixture of halog Process for separating pentafluoroethane from a mixture of halog

1991-05-16

1992-02-11

Bascomb, Jr., Wilbur

Distillation: processes, separatory

Adding material to distilland except water or steam per se

Organic compound

203 99, 570178, B01D 340, C07C 1738

Patent

active

050873296

ABSTRACT:
Separating pentafluoroethane from a mixture of pentafluoroethane and chloropentafluoroethane by adding a fluorocarbon extractive agent having 1-4 carbon atoms, and optionally containing hydrogen and/or chlorine, in an extractive distillation zone to recover pentafluoroethane substantially free of chloropentafluoroethane in the overhead product stream.

REFERENCES:
patent: 3152051 (1964-10-01), Fainberg et al.
patent: 3689373 (1972-09-01), Hutchinson
patent: 3689374 (1972-09-01), Hanson
patent: 3692635 (1972-09-01), Fozzard
patent: 3732150 (1973-05-01), Bailey
patent: 4950364 (1990-08-01), Wismer
patent: 4975156 (1990-12-01), Wismer

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