Process for extractive distillation of plural hydrocarbon mixtur

Details Process for extractive distillation of plural hydrocarbon mixtur Process for extractive distillation of plural hydrocarbon mixtur

1983-02-01

1983-12-20

Bascomb, Jr., Wilbur L.

Distillation: processes, separatory

Adding material to distilland except water or steam per se

Organic compound

203 58, 203DIG9, 585807, 585808, 585809, 585810, B01D 340, C07C 708

Patent

active

044216076

ABSTRACT:
A process of extractive distillation for separating components easily soluble in a polar solvent from at least two hydrocarbon mixtures having different contents of the easily soluble components by extractive distillation using said polar solvent, which comprises feeding a hydrocarbon mixture containing a larger amount of the easily soluble components, as a gas, into the middle or lower portion of an extractive distillation column, feeding a hydrocarbon mixture containing a smaller amount of the easily soluble components, as a liquid, to the upper portion of the extractive distillation column, and subjecting them to extractive distillation.

REFERENCES:
patent: 3050448 (1962-08-01), Fenske et al.
patent: 3422163 (1969-01-01), Asselin
patent: 3436436 (1969-04-01), Takao et al.
patent: 3654094 (1972-04-01), Yamagishi et al.
patent: 3798132 (1974-03-01), Sarno
patent: 4070408 (1978-01-01), Vickers
patent: 4158611 (1979-06-01), Cooke

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