Polycarboxylic acid production system employing enhanced...

Details Polycarboxylic acid production system employing enhanced... Polycarboxylic acid production system employing enhanced...

2006-03-01

2010-10-19

Puttlitz, Karl J (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acids and salts thereof

C562S409000

Reexamination Certificate

active

07816556

ABSTRACT:
Disclosed is an optimized system for more efficiently and economically producing terephthalic acid. The system includes a multi-stage oxidative digestion system for processing an improved initial slurry from primary oxidation. The multi-stage digestion system is capable of adequately purifying the improved initial slurry without requiring significant liquor exchange between primary oxidation and oxidative digestion.

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