Separation of alkenes from alkanes

Details Separation of alkenes from alkanes Separation of alkenes from alkanes

1990-10-26

1992-02-04

Manoharan, Virginia

Distillation: processes, separatory

Adding material to distilland except water or steam per se

At least two materials

203 56, 203 58, 203 64, 585809, 585865, 585857, B01D 340

Patent

active

050857401

ABSTRACT:
An extractive distillation process for separating at least one C.sub.4 -C.sub.10 alkene (monoolefin) from at least one close-boiling alkane (paraffin) employs as solvent a mixture of (a) at least one N-alkyl-2-pyrrolidone, preferably N-methyl-2-pyrrolidone and either (b1) at least one sulfolane compound (preferably cyclotetramethylene sulfone) or (b2) at least one glycol compound (preferably tetraethylene glycol) or both (b1) and (b2).

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"Handbook of Separation Techniques for Chemical Engineers", by Paul Schweitzer, McGraw-Hill, 1979, pp. 1-135 to 1-143.
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