Separation of 2-butyl acetate from 2-butanol by extractive disti

Details Separation of 2-butyl acetate from 2-butanol by extractive disti Separation of 2-butyl acetate from 2-butanol by extractive disti

1986-03-27

1988-01-12

Bascomb, Wilbur

Distillation: processes, separatory

Adding material to distilland except water or steam per se

At least two materials

203 56, 203 57, 203 60, 203 64, 560248, B01D 340, C07C 6748

Patent

active

047189886

ABSTRACT:
2-Butyl acetate cannot be completely removed from 2-butyl acetate-2-butanol-water mixtures by distillation because of the presence of the minimum ternary azeotrope. 2-butyl acetate can be readily removed from mixtures containing it, 2-butanol and water by using extractive distillation in which the extractive distillation agent is a higher boiling oxygenated, nitrogenous and/or sulfur containing organic compound or a mixture of these. Typical examples of effective agents are N,N-dimethylacetamide; dimethylformamide and ethylene glycol; acetamide, dimethylsulfoxide and ethylene glycol.

REFERENCES:
patent: 1770414 (1930-07-01), Martin et al.
patent: 2489619 (1949-11-01), Carlson et al.
patent: 2559520 (1951-07-01), Smith et al.
patent: 2575285 (1951-11-01), Carlson et al.
patent: 4379028 (1983-04-01), Berg et al.
patent: 4431838 (1984-02-01), Feldman et al.
patent: 4507176 (1985-03-01), Berg et al.
patent: 4592805 (1986-06-01), Berg et al.

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