Extractive distillation of low boiling alkene/alkane mixtures

Details Extractive distillation of low boiling alkene/alkane mixtures Extractive distillation of low boiling alkene/alkane mixtures

1991-01-23

1992-02-04

Manoharan, Virginia

Distillation: processes, separatory

Adding material to distilland except water or steam per se

At least two materials

203 14, 203 68, 203 95, 208313, 208337, 585867, B01D 340

Patent

active

050857410

ABSTRACT:
An extractive distillation process for separating at least one C.sub.2 -C.sub.4 alkene (preferably propylene) from at least one close-boiling alkane (preferably propane) employs propylene carbonate as solvent, optionally in admixture with a minor amount of water.

REFERENCES:
patent: 3242642 (1966-03-01), Miller et al.
patent: 3401112 (1968-09-01), Dunlop et al.
patent: 3617535 (1971-11-01), Weitz et al.
patent: 3769217 (1973-10-01), Bannister et al.
patent: 4695672 (1987-09-01), Bunting
patent: 4740222 (1988-04-01), Mehra
"Extractive Distillation Saves Energy" by Ian Sucksmith, Chemical Engineering, Jun. 28, 1982, pp. 91-95.
"Perry's Chemical Engineers' Handbook", Sixth Edition, pp. 13-53 to 13-57.
"Handbook of Separation Techniques for Chemical Engineers", by Philip A. Schweitze, 1979, pp. 1-135 to 1-143.

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