Separation of 2-pentanone from formic acid by extractive distill

Details Separation of 2-pentanone from formic acid by extractive distill Separation of 2-pentanone from formic acid by extractive distill

1988-05-02

1989-08-22

Bascomb, Wilbur

Distillation: processes, separatory

Adding material to distilland except water or steam per se

At least two materials

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

Patent

active

048592854

ABSTRACT:
2-Pentanone cannot be completely removed from 2-pentanone and formic acid mixtures by distillation because of the presence of the maximum azeotrope. 2-Pentanone can be readily removed from 2-pentanone-formic acid mixtures by extractive distillation in which the extractive agent is a ketone, either alone or mixed with certain high boiling organic compounds. Examples of effective agents are cyclohexanone; diisobutyl ketone and octanoic acid; isophorone, hexanoic acid and butyl ether.

REFERENCES:
patent: 2010384 (1935-08-01), van Melsen et al.
patent: 2269163 (1942-01-01), Othmer
patent: 2586929 (1952-02-01), Fleming et al.
patent: 3013954 (1961-12-01), Pacoud et al.
patent: 3265592 (1966-08-01), Van der Weel

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