Separation of methylene chloride from ethyl ether by extractive

Details Separation of methylene chloride from ethyl ether by extractive Separation of methylene chloride from ethyl ether by extractive

1991-04-01

1992-03-03

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, 568699, 570262, B01D 340, C07C 1738, C07C 4142

Patent

active

050929666

ABSTRACT:
Ethyl ester cannot be completely separated from methylene chloride by conventional distillation or rectification because of the maximum boiling azeotrope. Ethyl ether can be readily separated from methylene chloride by extractive distillation. Typical effective agents are t-butyl alcohol, n-propyl acetate or propoxypropanol.

REFERENCES:
patent: 3847756 (1974-11-01), Statman et al.
patent: 4036703 (1977-07-01), Leroi et al.
patent: 4121978 (1978-10-01), Becuwe
patent: 4459179 (1984-07-01), Berg et al.

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