Process to separate ethyl fluoride and HF

Details Process to separate ethyl fluoride and HF Process to separate ethyl fluoride and HF

1976-06-24

1977-05-03

Bascomb, Jr., Wilbur L.

Distillation: processes, separatory

Plural distillations performed on same material

One a distillation under positive pressure or vacuum

26068351, 2606536, 423488, B01D 314, C07C 1908

Patent

active

040213129

ABSTRACT:
The overhead stream of a deisobutanizer in an HF-alkylation plant is extracted with HF to produce a stream containing isobutane, HF and ethyl fluoride, which in turn is fractionated under a pressure of about 150 to 300 psig. The bottoms stream of this fractionation, then, is fractionated under a pressure of 50 to 145 psig to produce a relatively pure ethyl fluoride overhead stream and a relatively pure HF bottoms stream.

REFERENCES:
patent: 3253054 (1966-05-01), Van Pool
patent: 3438868 (1969-04-01), Sawaki et al.
patent: 3751517 (1973-08-01), Hutson et al.
patent: 3763265 (1973-10-01), Hutson et al.
patent: 3842140 (1974-10-01), Hutson
patent: 3888935 (1975-10-01), Sobel

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