PHENOL RECOVERY OF BISPHENOL-A MOTHER LIQUOR PURGE USING PURIFICATION TRAIN IN THE PHENOL PRODUCTION UNIT
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United States of America Patent
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Issued Date -
Dec 21, 2023
app pub date -
Oct 11, 2021
filing date -
Oct 9, 2020
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Abstract
Systems and methods for recovering phenol have been disclosed. The methods of recovering phenol includes concurrently processing, in a phenol recovery unit, a crude phenol stream from a phenol production unit, and a bisphenol-A purge stream from a bisphenol-A production unit to produce a first product stream comprising 60 to 95 wt. % phenol. The phenol recovery unit comprises a crude phenol distillation column and a bisphenol-A-phenol distillation column. The processing includes distilling a bottom stream from the crude phenol distillation column in the bisphenol-A-phenol distillation column.
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