Process for recovering crude phenol from catalyst-free cumene hy

Details Process for recovering crude phenol from catalyst-free cumene hy Process for recovering crude phenol from catalyst-free cumene hy

1977-12-15

1979-06-19

Bascomb, Jr., Wilbur L.

Distillation: processes, separatory

With chemical reaction

203 35, 203 43, 203 49, 203 77, 203 80, 203 81, 203DIG9, 203DIG19, 568754, 202155, B01D 300, C07C 3738

Patent

active

041586115

ABSTRACT:
Crude phenol is recovered from CHP reaction products by continuously feeding to a main column separating in its uppermost section phenol from crude acetone, this fraction being removed overhead, and in the lower section crude phenol from higher boilers, including acetophenone and carbinol, the crude phenol being removed as a sidestream fraction from the main column at a point in the column above the feed-point wherein the total concentration of acetophenone plus carbinol is less than 1,000 ppm and the higher boiling compounds being removed as a base fraction.

REFERENCES:
patent: 2720549 (1955-10-01), Armstrong et al.
patent: 2734085 (1956-02-01), Adams et al.
patent: 2824048 (1958-02-01), Hupe et al.
patent: 2910511 (1959-10-01), Joris
patent: 2992169 (1961-07-01), Gregory et al.
patent: 3180897 (1965-04-01), Sodomann et al.
patent: 3215745 (1965-11-01), Frank
patent: 3436429 (1969-04-01), Flickinger et al.

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