Separating and removing 1, 1, 1-trifluoroethane by using azeotro

Details Separating and removing 1, 1, 1-trifluoroethane by using azeotro Separating and removing 1, 1, 1-trifluoroethane by using azeotro

1996-03-28

1998-11-03

McMahon, Timothy

Special receptacle or package

For roll or reel

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570178, 203 43, 203 55, 203 63, 203 64, 203 65, 203 66, 203 71, 203 73, 203 80, B01D 336

Patent

active

058303251

ABSTRACT:
The disclosure relates to separating 1,1,1-trifluoroethane (HFC-143a from fluorocarbon impurities by using extractive distillation with an extractive agent comprising an alcohol. Examples of suitable extractive agents comprise at least one member from the group of methanol, butanol, ethanol, propanol, their isomers and cyclic compounds thereof, among others.

REFERENCES:
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patent: 4996379 (1991-02-01), Oshio
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patent: 5087329 (1992-02-01), Felix
patent: 5200431 (1993-04-01), Dattani et al.
patent: 5211867 (1993-05-01), Shankland
patent: 5421964 (1995-06-01), Mahler et al.

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