Process for the separation of ethyl acetate from ethanol and wat

Details Process for the separation of ethyl acetate from ethanol and wat Process for the separation of ethyl acetate from ethanol and wat

1984-07-19

1986-02-11

Bascomb, Wilbur

Distillation: processes, separatory

Adding material to distilland except water or steam per se

At least two materials

203 57, 203 60, 203 64, 560248, 568913, B01D 340

Patent

active

045697264

ABSTRACT:
Ethyl acetate cannot be completely removed from ethanol and water mixtures by distillation because of the presence of the minimum ternary azeotrope. Ethyl acetate can be readily removed from mixtures containing it, ethanol and water by using extractive distillation in which the extractive distillation agent is a higher boiling oxygenated, sulfur containing or nitrogenous organic compound or a mixture of these. Typical examples of effective agents are: 1,4-butanediol; ethylene glycol-1,5-pentanediol; propylene glycol-tetraethylene glycol-polyethylene glycol; glycerine-propylene glycol-tetraethylene glycol-1,4-butanediol.

REFERENCES:
patent: 3239434 (1966-03-01), Delaune et al.
patent: 3709928 (1973-01-01), Murayama et al.
patent: 4379028 (1983-04-01), Berg et al.
patent: 4415409 (1983-11-01), Zudkevitch et al.
patent: 4431838 (1984-02-01), Feldman et al.

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