Separation of acetone from methanol by extractive distillation

Details Separation of acetone from methanol by extractive distillation Separation of acetone from methanol by extractive distillation

1982-06-28

1986-04-22

Bascomb, Wilbur

Distillation: processes, separatory

Adding material to distilland except water or steam per se

At least two materials

203 54, 203 56, 203 57, 203 60, 203 62, 203 63, 203 64, 568411, 568913, B01D 340

Patent

active

045840636

ABSTRACT:
Acetone cannot be completely removed from acetone-methanol mixtures by distillation because of the presence of the minimum boiling azeotrope. Acetone can be readily separated from methanol by using extractive distillation in which the extractive agent is a higher boiling oxygenated, nitrogenous and/or sulfur-containing organic compound or a mixture of two or more of these. Typical examples of effective agents are: Glycerine, 1,5-Pentanediol, Dimethylsulfoxide, n-Hexanol, Dioctyl phthalate and N,N-Dimethylacetamide.

REFERENCES:
patent: 1805559 (1931-05-01), Barbet
patent: 2179991 (1939-11-01), Bright et al.
patent: 2273923 (1942-02-01), Bludworth
patent: 3419477 (1968-12-01), Mattia
patent: 3764627 (1973-10-01), Prinz
patent: 4153516 (1979-05-01), Reed et al.

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