Distillation process for recovery of methyl isobutyl ketone

Details Distillation process for recovery of methyl isobutyl ketone Distillation process for recovery of methyl isobutyl ketone

1978-06-07

1979-08-07

Bascomb, Jr., Wilbur L.

Distillation: processes, separatory

With disparate physical separation

Utilizing liquid-liquid extracting of distillation product

203 66, 260593P, B01D 336, C07C 4906

Patent

active

041636961

ABSTRACT:
There is disclosed an azeotropic distillation process for separating toluene from methyl isobutyl ketone (MIBK) in a spent liquor mixture. A toluene azeotrope former, preferably methanol, is added to the liquor in an amount sufficient to form an azeotrope with all of the toluene present in the mixture. The methanol is added in an amount of at least about 2.62, typically an excess amount of about 3.4 to about 6.3 parts by weight of methanol per 1.0 part by weight of toluene. The resulting azeotrope of methanol and toluene is then separated by distillation from the MIBK. The methanol may be subsequently recovered from the toluene by extraction with water. Other toluene azeotrope formers may be utilized.

REFERENCES:
patent: 2265220 (1941-12-01), Sullivan
patent: 2419521 (1947-04-01), Waldron
patent: 2428467 (1947-10-01), Petry et al.
patent: 2483625 (1949-10-01), Cubicciotti
patent: 3265592 (1966-08-01), Van Der Weel

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