Process for removal of impurities from an oxidizer purge stream

Liquid purification or separation – Processes – Liquid/liquid solvent or colloidal extraction or diffusing...

Reexamination Certificate

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Details

C159S047300, C210S763000, C210S772000, C210S774000, C210S784000, C210S806000, C562S414000

Reexamination Certificate

active

10975252

ABSTRACT:
A process is disclosed that relates to the removal of impurities and the recovery of a mother liquor and wash filtrate from an oxidizer purge stream produced in the synthesis of carboxylic acid, typically terephthalic. More particularly, the process involves the removal of impurities and the recovery of a mother liquor and wash filtrate from an oxidizer purge stream and then routing the mother liquor and or wash filtrate to an oxidation zone.

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