Recovery of a cumene/alpha-methylstyrene fraction from a mixture

Details Recovery of a cumene/alpha-methylstyrene fraction from a mixture Recovery of a cumene/alpha-methylstyrene fraction from a mixture

1981-08-03

1982-06-08

Sever, Frank

Distillation: processes, separatory

Vaporization zone under positive pressure or vacuum

And returning product of distillation step to distillation zone

203 98, 203DIG19, 568749, B01D 314

Patent

active

043338011

ABSTRACT:
A process is disclosed for the recovery of a cumene/alpha-methylstyrene fraction from a mixture thereof with phenol and water. Said mixture is introduced into a fractionation column at conditions to separate an overhead fraction comprising cumene and alpha-methylstyrene and a phenol bottoms fraction. A vapor stream comprising cumene, alpha-methylstyrene and a phenol-water azeotrope is withdrawn from an intermediate level of said column and condensed to form an organic phase and an aqueous phase comprising phenol. The latter is discharged, and the former is recycled to the column. The overhead fraction thus requires substantially less caustic to neutralize the residual phenol container therein.

REFERENCES:
patent: 2728795 (1955-12-01), Armstrong et al.
patent: 2824048 (1958-02-01), Hupe et al.
patent: 3215745 (1965-11-01), Frank

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