Separation of methanol from methyl acetate by extractive distill

Details Separation of methanol from methyl acetate by extractive distill Separation of methanol from methyl acetate by extractive distill

1984-03-23

1985-10-29

Bascomb, Wilbur

Distillation: processes, separatory

Adding material to distilland except water or steam per se

At least two materials

203 56, 203 57, 203 58, 203 64, 568913, B01D 340, C07C 2984

Patent

active

045499381

ABSTRACT:
Methanol cannot be completely removed from methanol-methyl acetate mixtures by distillation because of the presence of the minimum binary azeotrope. Methanol can be readily removed from mixtures containing it and methyl acetate 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: ethylene glycol phenyl ether, ethylene carbonate, nitromethane, 2-nitrotoluene, 1-nitropropane plus propylene carbonate.

REFERENCES:
patent: 2325379 (1943-07-01), Durrum
patent: 2623845 (1952-12-01), Coutor
patent: 3190813 (1965-06-01), Vogt et al.
patent: 3268572 (1966-08-01), Knorr et al.
patent: 3431181 (1969-03-01), Bouniot
patent: 4431838 (1984-02-01), Feldman et al.

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