Extractive distillation of mixtures containing aromatic and olef

Details Extractive distillation of mixtures containing aromatic and olef Extractive distillation of mixtures containing aromatic and olef

1991-07-01

1992-09-08

Manoharan, Virginia

Distillation: processes, separatory

Adding material to distilland except water or steam per se

At least two materials

203 58, 585860, 585865, B01D 340

Patent

active

051455625

ABSTRACT:
Aromatic hydrocarbons containing 6-10 carbon atoms per molecule are separated from close-boiling olefinic hydrocarbons by extractive distillation employing as solvent either N-methyl-2-thiopyrrolidone alone, or a mixture of N-(.beta.-mercaptoethyl)-2-pyrrolidone and N-methyl-2-thiopyrrolidone, or a mixture of N-(.beta.-mercaptoethyl)-2-pyrrolidone and N-methyl-2-pyrrolidone.

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