Separation of m-xylene from o-xylene by extractive distillation

Details Separation of m-xylene from o-xylene by extractive distillation Separation of m-xylene from o-xylene by extractive distillation

1991-04-04

1992-03-10

Bascomb, Jr., Wilbur

Distillation: processes, separatory

Adding material to distilland except water or steam per se

Organic compound

585866, B01D 340, C07C 708

Patent

active

050947257

ABSTRACT:
m-Xylene is difficult to separate from o-xylene by conventional distillation or rectification because of the close proximity of their boiling points. m-Xylene can be readily separated from o-xylene by using extractive distillation in which the agent is an aliphatic ester. Typical examples of effective agents are diethyl maleate, diethyl malonate or 2-ethyl hexyl acetate.

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