PHENOL RECOVERY FROM BPA PROCESS WASTE STREAMS

PHENOL RECOVERY FROM BPA PROCESS WASTE STREAMS

The disclosure is of a process for recovering valuable phenol and acetone from by-products of the condensation of phenol and a ketone from a mother liquor obtained for example upon crystallization of a 1:1 adduct of phenol and bisphenol, the mother liquor containing phenol, bisphenol, isomers, conta...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: OYEVAAR, MARTIN, HERKE, GRAFF, JOS, H., M, MAAS, CHRISTIANUS, JOHANNES, J
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
ACYCLIC OR CARBOCYCLIC COMPOUNDS
APPARATUS THEREFOR
CHEMISTRY
GENERAL METHODS OF ORGANIC CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Beschreibung
Zusammenfassung:The disclosure is of a process for recovering valuable phenol and acetone from by-products of the condensation of phenol and a ketone from a mother liquor obtained for example upon crystallization of a 1:1 adduct of phenol and bisphenol, the mother liquor containing phenol, bisphenol, isomers, contaminant by-products of the condensation reaction of phenol with the ketone and acidic impurities. The mother liquor is distilled/evaporated leaving a tarry residue, which is the feedstock for the process of the invention. The recovery comprises catalytically cracking the feedstock with catalytic proportions of an aromatic sulfonic acid to extract the bisphenol-A values as phenol and acetone.