Separation of ethyl acetate from methyl ethyl ketone by extracti

Details Separation of ethyl acetate from methyl ethyl ketone by extracti Separation of ethyl acetate from methyl ethyl ketone by extracti

1982-09-27

1984-09-11

Bascomb, Jr., Wilbur L.

Distillation: processes, separatory

Adding material to distilland except water or steam per se

At least two materials

203 56, 203 57, 203 58, 203 60, 203 61, 203 62, 203 63, 203 64, 203 65, B01D 340, C07C 6754, C07C 4582

Patent

active

044708815

ABSTRACT:
A method for separating ethyl acetate from methyl ethyl ketone is described including distilling in an anhydrous condition a mixture of ethyl acetate-methyl ethyl ketone in a plate column in the presence of an effective amount of an organic extractive solvent which has the following properties: (1) is soluble in a boiling ethyl acetate-methyl ethyl ketone mixture; (2) does not form an azeotrope with ethyl acetate or methyl ethyl ketone; (3) boils higher than ethyl acetate and methyl ethyl ketone and (4) in combination with the ethyl acetate-methyl ethyl ketone mixture, results in a relative volatility of ethyl acetate to methyl ethyl ketone greater than 1.20.

REFERENCES:
patent: 2444893 (1948-07-01), Lake
patent: 2862853 (1958-12-01), Luke et al.
patent: 3228985 (1966-01-01), Carpenter et al.
patent: 3591463 (1971-07-01), Copelin
patent: 3691021 (1972-09-01), Feldman et al.
patent: 3736236 (1973-05-01), DiFiore et al.

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