Separating aromatic hydrocarbons from mixtures containing them

Details Separating aromatic hydrocarbons from mixtures containing them Separating aromatic hydrocarbons from mixtures containing them

1978-05-09

1980-05-06

Bascomb, Jr., Wilbur L.

Distillation: processes, separatory

Adding material to distilland except water or steam per se

Organic compound

203 60, 203 78, 585805, 585806, 585808, B01D 340, C07C 708

Patent

active

042016339

ABSTRACT:
A method for separating benzene, toluene, xylenes and higher aromatics from admixtures containing them is disclosed, said method being based on the use of a solvent which is a 5-atom cyclic derivative of urea in which at least one of the nitrogen atoms is bound to an alkyl.
Representative of this class of selective solvents is N,N'-dimethyl ethylene urea.
Procedure details and examples are given.

REFERENCES:
patent: 2840511 (1958-06-01), Rylander et al.
patent: 3120487 (1964-02-01), Norton et al.
patent: 3227632 (1966-01-01), Schmalenbach et al.
patent: 3434936 (1969-03-01), Luther et al.
patent: 3980528 (1976-09-01), Rescalli et al.

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