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

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

1991-10-22

1992-02-25

Bascomb, Jr., Wilbur

Distillation: processes, separatory

Adding material to distilland except water or steam per se

At least two materials

203 60, 585866, B01D 340, C07C 708

Patent

active

050910590

ABSTRACT:
p-Xylene is difficult to separate from m-xylene by conventional distillation or rectification because of the close proximity of their boiling points. p-Xylene can be readily separated from m-xylene by using extractive distillation in which the agent is an ester. Typical examples of effective agents are butyl butyrate, methyl caproate and methyl heptanoate.

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