Separation of 3-methyl-2-butanone from formic acid by extractive

Details Separation of 3-methyl-2-butanone from formic acid by extractive Separation of 3-methyl-2-butanone from formic acid by extractive

1989-11-07

1990-09-18

Bascomb, Wilbur

Distillation: processes, separatory

Adding material to distilland except water or steam per se

At least two materials

203 56, 203 58, 203 60, 203 61, 203 62, 203 63, 203 64, 203 65, 562609, 568410, B01D 340, C07C 4583, C07C 5144

Patent

active

049575953

ABSTRACT:
3-Methyl-2-butanone cannot be separated from formic acid by distillation because of the presence of the maximum boiling azotrope. 3-Methol-2-butanoe can be readily removed from formic acid by extractive distillation using sulfolane. Typical effective agents are: sulfolane and ethylene glycol diacetate; sulfolane, m-toluic acid and anisole.

REFERENCES:
patent: 2570205 (1951-10-01), Carlson et al.
patent: 2586929 (1952-02-01), Fleming et al.
patent: 3013954 (1961-12-01), Pacoud et al.
patent: 3265592 (1966-08-01), Van Der Weel
patent: 3309407 (1967-04-01), Carpenter et al.
patent: 4735690 (1988-04-01), Berg et al.
patent: 4793901 (1988-12-01), Berg et al.
patent: 4840707 (1989-06-01), Berg et al.
patent: 4859285 (1989-08-01), Berg et al.

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