Extractive distillation of cycloalkane/alkane feeds

Details Extractive distillation of cycloalkane/alkane feeds Extractive distillation of cycloalkane/alkane feeds

1990-05-21

1991-10-08

Manoharan, Virginia

Distillation: processes, separatory

Adding material to distilland except water or steam per se

At least two materials

203 58, 203 65, 203 69, 203 70, 585860, 585865, 585867, B01D 334

Patent

active

050551620

ABSTRACT:
Cycloalkanes, preferably cyclohexane and/or cyclopentane, are separated from close-boiling alkanes by extractive distillation employing as solvent a mixture of (a) at least one N-hydroxyalkyl-2-pyrrolidone, preferably N-(.beta.-hydroxyethyl)-2-pyrrolidone, and (b) at least one saturated C.sub.5 -C.sub.9 alcohol, preferably cyclohexanol.

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Perry's Chemical Engineers Handbook, 6th Edition, pp. 13-53 to 13-57.
Handbook of Separation Techniques by Philip Schweitzer, 1979, McGraw Hill Book Company, pp. 1-135 to 1-143.
"Extractive Distillation Saves Energy", by Ian Sucksmith, Chemical Engineering, Jun. 28, 1982, pp. 91-95.

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