Patent ID: 8697906
Filing Date: 2014-04-15
Classification: C07C

Abstract:
1. A method for isolating solid particles: the solid particles comprising an aromatic dicarboxylic acid, said method comprising: treating a slurry comprising a liquid and said solid particles in a product isolation zone to thereby produce a mother liquor at a temperature of from 50° C. to 100° C. and a low-moisture wet cake comprising at least a portion of the solid particles, wherein the liquid consists essentially of acetic acid or mixtures of acetic acid and water, and the slurry treatment comprises washing at least a portion of the solid particles in an initial wet cake formed by removal of the mother liquor with a wash stream consisting essentially of acetic acid or mixtures of acetic acid and water having an initial temperature in a range from 60° C. to 140° C., to provide the low-moisture wet cake having a liquid content of less than 9 weight percent liquid.