Controlled continuous purification of propylene oxide by extractive distillation

Controlled continuous purification of propylene oxide by extractive distillation

In the continuous purification of a propylene oxide feedstock contaminated with water, methanol and acetone wherein an acetone buffer is established in the column, normal distillation conditions are maintained or restored during or after an upset by continuously monitoring predetermined distillation...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: DOWNS, JAMES JOSEPH, HIESTER, ANDREW CHARLES, PETERS, MICHAEL WARREN, NELSON, WILLIAM PLEASIE, TAYLOR, MARK ELLIOTT, MUELLER, MARK ALLAN
Format: Patent
Sprache:eng
Schlagworte:
APPARATUS THEREFOR
CHEMISTRY
GENERAL METHODS OF ORGANIC CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
TRANSPORTING
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Beschreibung
Zusammenfassung:In the continuous purification of a propylene oxide feedstock contaminated with water, methanol and acetone wherein an acetone buffer is established in the column, normal distillation conditions are maintained or restored during or after an upset by continuously monitoring predetermined distillation conditions in the acetone buffer zone, and adding additional acetone to the extractive distillation column when the monitored distillation condition deviates from a predetermined value by a predetermined amount.