Process for the separation of HF via phase separation and distil

Details Process for the separation of HF via phase separation and distil Process for the separation of HF via phase separation and distil

1988-08-01

1990-03-27

Manoharan, Virginia

Distillation: processes, separatory

With disparate physical separation

203 78, 203 80, 570178, B01D 310, C07C 2500

Patent

active

049117920

ABSTRACT:
Process for the separation of HF, 2,2-dichloro-1,1,1-trifluoroethane (FC-123) and/or 2-chloro-1,1,1,2-tetrafluoroethane (FC-124) mixture by subjecting the mixture to a temperature from about -80.degree. C. to about 40.degree. C. and a pressure from about 0.10 MPa to about 3.55 MPa in a separation zone, whereby an organic phase having less than 15 mole percent of HF is formed as the bottom layer in the separation zone and an acid phase having at least 93 mole percent of HF is formed at the top in the separation zone.

REFERENCES:
patent: 2425752 (1947-08-01), McKenna et al.
patent: 2450414 (1948-10-01), Benning
patent: 2450415 (1948-10-01), Benning
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patent: 3406099 (1968-10-01), Buckman et al.
patent: 3873629 (1975-03-01), Jones
patent: 3947558 (1976-03-01), van Eijl
patent: 3976447 (1976-08-01), Merchant et al.
patent: 4209470 (1980-06-01), Lorquet
patent: 4766258 (1988-08-01), Komatsu

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