Separation of trichloroethylene from a butyl alcohol by extracti

Details Separation of trichloroethylene from a butyl alcohol by extracti Separation of trichloroethylene from a butyl alcohol by extracti

1991-07-25

1992-06-02

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 65, 568913, 570262, B01D 340, C07C 1738, C07C 2984

Patent

active

051183927

ABSTRACT:
Trichloroethylene cannot be completely separated from n-butanol, isobutanol, 2-butanol or t-butanol by conventional distillation or rectification because of the minimum boiling azeotropes. Trichloroethylene can be readily separated from n-butanol, isobutanol, 2-butanol or t-butanol by extractive distillation. Typical effective agents are: for n-butanol, dimethylsulfoxide; for isobutanol, n-octanol; for 2-butanol, 2-methyl-1-pentanol and for t-butanol, n-butyl acetate.

REFERENCES:
patent: 3697388 (1972-10-01), Hobson et al.
patent: 4036703 (1977-07-01), Leroi et al.
patent: 4121978 (1978-10-01), Becuwe

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