Separation of chloroform from a lower alcohol by extractive dist

Details Separation of chloroform from a lower alcohol by extractive dist Separation of chloroform from a lower alcohol by extractive dist

1991-06-03

1992-07-21

Bascomb, Jr., Wilbur

Distillation: processes, separatory

Adding material to distilland except water or steam per se

Organic compound

203 58, 203 60, 203 62, 203 63, 203 64, 568913, 570262, B01D 340, C07C 1738, C07C 2984

Patent

active

051319853

ABSTRACT:
Chloroform cannot be completely separated from methanol, ethanol or isopropanol by conventional distillation or rectification because of the minimum boiling azeotrope between chloroform and the alcohols. Chloroform can be readily separated from methanol, ethanol or isopropanol by extractive distillation. Typical effective agents are: for methanol, isopropanol or 4-methyl-2-pentanone; for ethanol, n-butanol or isobutyl acetate; for isopropanol, butyl acetate or ethylene glycol ethyl ether.

REFERENCES:
patent: 893784 (1908-07-01), Chute

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