Separation of 1,1,1-trichloroethane from the lower alcohols by e

Details Separation of 1,1,1-trichloroethane from the lower alcohols by e Separation of 1,1,1-trichloroethane from the lower alcohols by e

1991-11-08

1993-03-23

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

051960940

ABSTRACT:
1,1,1-Trichloroethane cannot be completely separated from methanol, ethanol, n-propanol, isopropanol, 2-butanol or t-butanol by conventional distillation or rectification because of the minimum boiling azeotropes. 1,1,1-Trichloroethane can be readily separated from these alcohols by extractive distillation. A typical effective agent is dimethylsulfoxide.

REFERENCES:
patent: 2308170 (1943-01-01), Green et al.
patent: 3113079 (1963-12-01), Bergeron
patent: 3658657 (1972-04-01), Bursack et al.
patent: 3989601 (1976-11-01), Boozalis et al.
patent: 4220609 (1980-09-01), McEntee et al.
patent: 5106460 (1992-04-01), Berg
patent: 5118392 (1992-06-01), Berg
patent: 5131985 (1992-07-01), Berg et al.

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