Process for separating and recovering fluorocarbons and HCI from

Details Process for separating and recovering fluorocarbons and HCI from Process for separating and recovering fluorocarbons and HCI from

1997-05-21

1999-01-12

Spitzer, Robert

Gas separation: processes

Selective diffusion of gases

Selective diffusion of gases through substantially solid...

95 45, B01D 5322

Patent

active

058580662

ABSTRACT:
An improved process is disclosed for separating and recovering a fluorocarbon and hydrogen chloride (HCl) from a gaseous fluorocarbon/HCl mixture, wherein the fluorocarbon and HCl are difficult to separate by conventional means because of the presence or potential formation of an azeotrope or azeotrope-like composition in the mixture, such process comprising using a semi-permeable membrane unit to form a fluorocarbon-depleted stream and a fluorocarbon-enriched stream which may then be further processed individually by distillation.

REFERENCES:
patent: 4941893 (1990-07-01), Hsieh et al.
patent: 5196616 (1993-03-01), Lee et al.
patent: 5456841 (1995-10-01), Lee

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