Separation of n-propyl acetate from n-propanol and water by extr

Details Separation of n-propyl acetate from n-propanol and water by extr Separation of n-propyl acetate from n-propanol and water by extr

1985-11-07

1987-06-30

Bascomb, Wilbur

Distillation: processes, separatory

Adding material to distilland except water or steam per se

At least two materials

203 56, 203 58, 203 59, 203 64, 560248, B01D 340, C07C 6754

Patent

active

046768742

ABSTRACT:
n-Propyl acetate cannot be completely removed from n-propyl acetate - n-propanol - water mixtures by distillation because of the presence of the minimum ternary azeotrope. n-Propyl acetate can be readily removed from mixtures containing it, n-propanol and water by using extractive distillation in which the extractive distillation agent is a higher boiling oxygenated or nitrogenous organic compound or a mixture of these. Typical examples of effective agents are N-methylpyrrolidone; triethanolamine; N-methylpyrrolidone and ethylene glycol.

REFERENCES:
patent: 1770414 (1930-07-01), Martin et al.
patent: 4507176 (1985-03-01), Berg et al.
patent: 4592805 (1986-06-01), Berg et al.

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