Process for the thermal decomposition of phenol pitch

Details Process for the thermal decomposition of phenol pitch Process for the thermal decomposition of phenol pitch

1980-02-08

1982-07-13

Trousof, Natalie

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

568754, 585437, 585469, 203 91, C07C 4551

Patent

active

043396054

ABSTRACT:
Phenol pitch obtained as a bottoms fraction in the distillation of phenol deriving from the acid hydrolysis of cumene hydroperoxide is treated to recover therefrom desired products consisting of phenol, alpha-methylstyrene, cumene and acetone, by introducing steam and the phenol pitch, into a reactor in a weight ratio of from 0.01:1 to 1:1, withdrawing from the top of said reactor a vapor phase comprising said desired products, withdrawing from the bottom of said reactor a liquid phase consisting essentially of compounds of higher boiling point than said desired products, and operating at a pressure of 4-12 Kg/cm.sup.2, at a temperature of 320.degree.-400.degree. C., as measured in the liquid phase, and with a residence time of 0.5-10 hours.

REFERENCES:
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patent: 3215745 (1965-11-01), Frank
patent: 3631214 (1971-12-01), Engelbrecht et al.
patent: 3850996 (1974-11-01), Nixon
Kolesnikov et al., Chem. Abst., vol. 88, #74201e, (1978).
Takahashi et al., Chem. Abst., vol. 89, #163263q, (1978).
Bartkowiak et al., Chem. Abst., vol. 85, #46195a, (1976).

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