Process for separating pentafluoroethane and 1,1,1-trifluoroetha

Details Process for separating pentafluoroethane and 1,1,1-trifluoroetha Process for separating pentafluoroethane and 1,1,1-trifluoroetha

1998-03-12

2000-04-11

Capossela, Ronald

Refrigeration

Cryogenic treatment of gas or gas mixture

Separation of gas mixture

62918, 203 44, 570178, F25J 100

Patent

active

060475609

ABSTRACT:
A process for separating pentafluoroethane and 1,1,1-trifluoroethane, which comprises extraction distilling a mixed fluid comprising pentafluoroethane and 1,1,1-trifluoroethane in the presence of at least one extracting agent selected from the group consisting of esters and ketones each having a standard boiling point of from -10.degree. C. to 100.degree. C. Also disclosed is a process for separating pentafluoroethane, 1,1,1-trifluoroethane and chloropentafluoroethane, which comprises extraction distilling a mixed fluid comprising pentafluoroethane, 1,1,1-trifluoroethane and chloropentafluoroethane in the presence of at least one extracting agent selected from the group consisting of esters and ketones each having a standard boiling point of from -10.degree. C. to 100.degree. C.

REFERENCES:
patent: 3282801 (1966-11-01), Wiist
patent: 3732150 (1973-05-01), Bailey
patent: 5830325 (1998-11-01), Mahler et al.

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