METHOD FOR CRYSTALLISING CARBOXYLIC ACID

摘要

The invention concerns a method for crystallising carboxylic acid, more particularly adipic acid and a method for making crystallised carboxylic acid, more specifically a method for treating a reaction medium derived from direct oxidation of a hydrocarbon into carboxylic acid such as adipic acid, for example. More specifically, the invention concerns the crystallisation of adipic acid in an organic solvent for eliminating organic impurities contained in said acid and thereby ultimately facilitating its purification by crystallisation in water.