Distillation: processes – separatory – Plural distillations performed on same material – Distillation of initial distillate
Patent
1982-06-28
1989-08-15
Bascomb, Wilbur
Distillation: processes, separatory
Plural distillations performed on same material
Distillation of initial distillate
203 39, 203 83, 568749, 568754, B01D 336, C07C 3778
Patent
active
048571512
ABSTRACT:
Crude phenol containing methyl benzofuran and other impurities is distilled in the presence of water to recover a phenol bottoms having a reduced quantity of impurities. The water-phenol overhead is cooled to separate a water phase essentially free of methyl benzofuran, which is recycled to the distillation. The organic phase may then be further distilled, in the presence of water, as previously described, to eventually recover a reduced quantity of phenol in which impurities are concentrated.
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Chen Jamin
Khonsari Ali M.
Suciu George D.
Bascomb Wilbur
Olstein Elliot M.
The Lummus Company
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