Distillation: processes – separatory – Adding material to distilland except water or steam per se – At least two materials
Patent
1992-10-23
1994-08-23
Bascomb, Jr., Wilbur
Distillation: processes, separatory
Adding material to distilland except water or steam per se
At least two materials
203 63, 203 64, 203 78, 203 91, 549541, B01D 340, C07D30132
Patent
active
053404467
ABSTRACT:
An extractive distillation agent consisting essentially of a mixture of triethylene glycol with a lower boiling cosolvent selected from the group consisting of 2-methyl-2,4-pentanediol, tertiary butyl alcohol and ethylene glycol 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 acetone and methanol, and a heavier bottoms distillation fraction containing substantially all of the extractive distillation agent, water and acetone and some of the methanol introduced into the distillation column.
REFERENCES:
patent: 3578568 (1971-05-01), Washall
patent: 5000825 (1991-03-01), Shih et al.
patent: 5006206 (1991-04-01), Shih et al.
patent: 5129996 (1992-07-01), Shih
patent: 5133839 (1992-07-01), Shih
patent: 5139622 (1992-08-01), Marquis et al.
patent: 5154803 (1992-10-01), Marquis et al.
Nelson William P.
Smith William A.
Bailey James L.
Bascomb, Jr. Wilbur
Priem Kenneth R.
Ries Carl G.
Texaco Chemical Company
LandOfFree
Purification of propylene oxide by cosolvent extractive distilla does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Purification of propylene oxide by cosolvent extractive distilla, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Purification of propylene oxide by cosolvent extractive distilla will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-500322