Phenol purification
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United States of America Patent
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-
Aug 15, 1989
Grant Date -
N/A
app pub date -
Jun 28, 1982
filing date -
Jun 28, 1982
priority date (Note) -
Expired
status (Latency Note)
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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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