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

1984-10-01

1986-04-29

Bashore, S. Leon

Distillation: processes, separatory

Adding material to distilland except water or steam per se

Organic compound

203 51, 203 56, 203 63, 585805, B01D 340

Patent

active

045855269

ABSTRACT:
m-Xylene is difficult to separate from o-xylene by conventional rectification or distillation 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 extractive agent comprises propoxypropanol; propoxypropanol and 1,4-butanediol; ethyl benzoate and ethylene glycol phenyl ether and benzyl alcohol.

REFERENCES:
patent: 2456561 (1948-12-01), Lake et al.
patent: 2721170 (1955-10-01), Johnson
patent: 2957811 (1960-10-01), Geiser
patent: 3089829 (1963-05-01), Millikan
patent: 3114784 (1963-12-01), Coscia
patent: 3328267 (1967-06-01), Muller
patent: 4299668 (1981-11-01), Berg

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