OPTIMIZED PRODUCTION OF AROMATIC DICARBOXYLIC ACIDS.

摘要

Disclosed is an optimized process and apparatus for more efficiently producingaromatic dicarboxylic acids (e.g., terephthalic acid). In one embodiment theprocess/apparatus reduces costs by recovering and purifying residual terephthalicacid present in the liquid phase of an initial oxidation slurry. In another embodimentthe process apparatus reduces costs associated with hydrogenation by forminga final composite product containing unhydrogenated acid particles.