METHOD FOR REMOVING RESIDUES BY MEANS OF A STRIPPING DEVICE

摘要

The present invention provides method for removing residues from a first process stream comprising an organic solvent, water, a derivative of the organic solvent and the residues, comprising the steps of: i) feeding the first process stream to a solvent stripper comprising a still pot and a stripper column; ii) removing a vapour stream comprising the organic solvent, water and the derivative of the organic solvent from the stripper column; and iii) removing a residue stream from the still pot; characterised in that: the still pot and the stripper column form an integrated unit and the stripper column comprises a plurality of sieve trays. The present invention further provides an apparatus for carrying out the method, and processes for the production of a purified aromatic dicarboxylic acid incorporating the method.