Distillation: processes – separatory – Adding material to distilland except water or steam per se – Organic compound
Patent
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.
Culbreth, III William K.
Marquis Edward T.
Pottratz David G.
Sheu Yu-Hwa E.
Speranza George P.
Bascomb, Jr. Wilbur
Park Jack H.
Priem Kenneth R.
Ries Carl G.
Texaco Chemical Company
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