Separation process

Details Separation process Separation process

1992-03-11

1993-05-18

Monoharan, Virginia

Distillation: processes, separatory

Plural distillations performed on same material

Distillation of initial distillate

203 99, 203DIG19, 570178, B01D 300, C07C 1700

Patent

active

052118177

ABSTRACT:
A product stream containing, inter alia, HCl, HF and fluorocarbons which form close boiling point azeotropes with HF is subjected to distillation using sidestream rectification in order to effect energy efficient separation of selected fluorocarbon/HF azeotropes from one another.

REFERENCES:
patent: 3763022 (1973-10-01), Chapman
patent: 4026930 (1977-05-01), Bjornson
patent: 4166774 (1979-09-01), Wagner
patent: 4256541 (1981-03-01), Muller et al.
patent: 4299606 (1981-11-01), Rabota et al.
patent: 4950364 (1990-08-01), Wismer

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