FIELD: chemistry.
SUBSTANCE: invention relates to a process for the production of purified aromatic carboxylic acid, comprising: generating high-pressure steam from boiler feedwater supplied to the boiler; heating the crude aromatic carboxylic acid in the heating zone using indirect heat exchange with high-pressure steam, while high-pressure steam condenses in the heating zone to form high-pressure condensate; and purifying the crude aromatic carboxylic acid to form a purified aromatic carboxylic acid; and the boiler feedwater contains at least part of the high pressure condensate.
EFFECT: efficient way to reduce energy consumption.
12 cl, 2 dwg
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