USE OF MIXED POLYOXYPROPYLENE GLYCOLS IN THE EXTRACTIVE DISTILLATION OF PROPYLENE OXIDE

An extractive distillation agent comprising a mixture of polyoxypropylene glycols is fed to an extractive distillation column used for the distillation of propylene oxide contaminated with water, acetone and methanol to obtain an overhead distillate fraction consisting of essentially anhydrous propy...

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Bibliographische Detailangaben
Hauptverfasser:	CULBRETH, WILLIAM K., III, MUELLER, MARK A, PETERS, MICHAEL W
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	CHEMISTRY HETEROCYCLIC COMPOUNDS METALLURGY ORGANIC CHEMISTRY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION TRANSPORTING
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Beschreibung
Zusammenfassung:	An extractive distillation agent comprising a mixture of polyoxypropylene glycols is fed to an extractive distillation column used for the distillation of propylene oxide contaminated with water, acetone and methanol to obtain an overhead distillate fraction consisting of essentially anhydrous propylene oxide contaminated with reduced quantities of methanol, and a heavier bottoms distillation fraction containing substantially all of the polyoxypropylene glycols, water and acetone and some of the methanol introduced into the distillation column.