Process for treating waste gases containing trichlorotrifluoroet

Details Process for treating waste gases containing trichlorotrifluoroet Process for treating waste gases containing trichlorotrifluoroet

1988-08-15

1989-10-17

Nozick, Bernard

Gas separation

Means within gas stream for conducting concentrate to collector

55 71, 55 40, B01D 1900

Patent

active

048744034

ABSTRACT:
A method of treating a trichlorotrifluoroethane containing waste gas. The trichlorotrifluoroethane waste gas is contacted at atmospheric pressure or under pressurized conditions with at least one absorber selected from the group consisting of saturated mineral oils, alkyl dipheny ether based oils, silicone oils, trichlorotrifluoroethane based oils, and perfluoropolyether based oils, having a vapor pressure of not higher than 7.6.times.10.sub.2 mmHg at 25.degree. C. and a viscosity of not higher than 500 cp at 25.degree. C., to remove trichlorotrifluoroethane contained in the waste gas by absorbing, and depressurizing the absorber having absorbed therein trichlorotrifluoroethane to recover trichlorotrifluoroethane.

REFERENCES:
patent: 2540905 (1951-02-01), Neuberger et al.
patent: 3581466 (1971-06-01), Rudolph et al.

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