Purification of propylene oxide by extractive distillation

Details Purification of propylene oxide by extractive distillation Purification of propylene oxide by extractive distillation

C - Chemistry, Metallurgy

07

D

C07D 301/32 (2006.01) B01D 3/40 (2006.01) C07D 303/04 (2006.01)

Patent

CA 2070865

PURIFICATION OF PROPYLENE OXIDE BY EXTRACTIVE DISTILLATION (Docket No. 81,112-F) ABSTRACT OF THE DISCLOSURE An extractive distillation agent consisting essentially of triethylene glycol is fed to an extractive distillation column used for the distillation of propylene oxide contami- nated with water, acetone and methanol to obtain an overhead distillate fraction consisting of essentially anhydrous propylene oxide contaminated with reduced quantities of acetone and methanol, and a heavier bottoms distillation fraction containing substantially all of the triethylene glycol, water and acetone and some of the methanol introduced into the distillation column.

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