Phenol separation

Distillation: processes – separatory – Adding material to distilland except water or steam per se – Organic compound

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Details

203 78, 203 80, 203DIG16, 568754, 568810, 568913, B01D 340

Patent

active

055385990

ABSTRACT:
A process is provided whereby phenol is separated from 1-phenyl ethanol, acetophenone or mixtures by extractive distillation with sulfolane as extractive distillation agent which decreases phenol volatility relative to 1-phenyl ethanol and acetophenone.

REFERENCES:
patent: 2551584 (1951-05-01), Carlson et al.
patent: 3351635 (1967-11-01), Kollar
patent: 3919078 (1975-11-01), Cohen et al.
patent: 4012289 (1977-03-01), Haskell
patent: 4021490 (1977-05-01), Hudson
patent: 5171868 (1992-12-01), Albal et al.
patent: 5320715 (1994-06-01), Berg
patent: 5334774 (1994-08-01), Kogure et al.

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