Water and acetone removal from propylene oxide by extractive dis

Details Water and acetone removal from propylene oxide by extractive dis Water and acetone removal from propylene oxide by extractive dis

1991-11-01

1992-05-26

Bascomb, Jr., Wilbur

Distillation: processes, separatory

Adding material to distilland except water or steam per se

Organic compound

203 14, 549541, B01D 340, C07D30132

Patent

active

051164671

ABSTRACT:
An extractive distillation agent consisting essentially of sulfolane is fed to an extractive distillation column used for the distillation of propylene oxide contaminated with water to obtain an overhead distillate fraction consisting of essentially anhydrous propylene oxide, and a heavier bottoms distillation fraction containing substantially all of the sulfolane and water introduced into the distillation column.

REFERENCES:
patent: 3838020 (1974-09-01), Kageyama et al.
patent: 4369096 (1983-01-01), Seifert et al.
patent: 4971661 (1990-12-01), Meyer et al.

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