FIELD: chemistry.
SUBSTANCE: invention relates to a method of producing aromatic carboxylic acid. Said method involves an oxidative step for oxidising an alkyl aromatic compound in the presence of a bromine compound to obtain an aromatic carboxylic acid; and a step for burning exhaust gas formed at the oxidation step in an incinerator. The gas obtained after burning the exhaust gas at burning temperature ranging from 450°C to 1000°C is cooled to 250°C or lower, and the time for cooling from 450°C to 250°C in the cooling process is not more than 1 second.
EFFECT: use of the present method enables to inhibit formation of bromine-containing dioxins.
11 cl, 1 tbl, 4 ex, 3 dwg
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