PROCESS AND SYSTEM FOR THE SEPARATION OF SOLID CARBOXYLIC ACID FINES

摘要

A process for the separation of solid carboxylic acid fines from mother liquor comprising said fines, wherein said process comprises the steps of: feeding the mother liquor containing fines to a settlement drum at above atmospheric pressure; and removing mother liquor having a lower concentration of carboxylic fines than that fed to the settlement drum; wherein said mother liquor removal occurs at a point above the point at which the mother liquor containing fines is fed to the settlement drum. Also described is a system for the separation of solid carboxylic acid fines from mother liquor, said system comprising: a settlement drum having an inlet for mother liquor comprising carboxylic acid fines and an outlet for mother liquor having a lower concentration of carboxylic acid fines content then that of the mother liquor introduced via the inlet; wherein said settlement drum is configured to operate at above atmospheric pressure and said outlet is located at a point in the settlement drum above said inlet.