Separation of isopropyl ether from acetone by extractive distill

Details Separation of isopropyl ether from acetone by extractive distill Separation of isopropyl ether from acetone by extractive distill

1984-02-03

1985-11-05

Bascomb, Wilbur

Distillation: processes, separatory

Adding material to distilland except water or steam per se

At least two materials

203 60, 203 64, 568411, 568699, B01D 340, C07C 4142, C07C 4583

Patent

active

045512078

ABSTRACT:
Isopropyl ether cannot be completely removed from isopropyl ether-acetone mixtures by distillation because of the presence of the minimum binary azeotrope. Isopropyl ether can be readily removed from mixtures containing it and acetone by using extractive distillation in which the extractive distillation agent is a higher boiling oxygenated, nitrogenous and/or sulfur containing compound or a mixture of these. Typical examples of effective agents are: dimethylsulfoxide; sulfolane and propylene glycol; adiponitrile, glycerine and ethylene glycol.

REFERENCES:
patent: 2273923 (1942-02-01), Bludworth
patent: 2570205 (1951-10-01), Carlson et al.
patent: 3955939 (1976-05-01), Sommer et al.
patent: 4012289 (1977-03-01), Haskell
patent: 4459178 (1984-07-01), Berg et al.
patent: 4459179 (1984-07-01), Berg et al.
patent: 4469491 (1984-09-01), Finkel

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