SYSTEM AND METHOD FOR THE SOLVENT EXTRACTION PROCESS mother liquor PURE

摘要

1. A process for extracting pure residual mother liquor (CHOMR), resulting in obtaining pure terephthalic acid (chTFK) comprising: combining CHOMR with a solution containing an organic entrainer to produce a mixture wherein CHOMR temperature of at least about 20 ° C less than the azeotropic temperature of the solution comprising the organic entrainer, separating the mixture into an organic stream containing residual aromatic carboxylic acid and the aqueous stream, heating the organic stream pU it heat exchange with the effluent from the distillation column, heated to form the organic stream, heating the aqueous stream by heat exchange with the effluent from the regeneration column to form a heated water stream, supplying the heated organic stream to a distillation column; and supply line at least a portion of the heated water stream in the regeneration kolonnu.2. The method of claim. 1, characterized in that it further comprises feeding a second part of the heated water stream into the distillation kolonnu.3. The method of claim. 1, characterized in that the organic entrainer selected from the group consisting of toluene, xylene, ethylbenzene, methylbutyl ketone, chlorobenzene, etilamilovogo ether, butyl formate, n-propyl, isopropyl, n-butyl acetate, isobutyl acetate, amyl acetate, methyl acetate, n -butilpropionata, izobutilpropionata, propanol, water and smesey.4. The method of claim. 1, characterized in that CHOMR temperature of at least about 25 ° C lower than the azeotropic temperature of the solution containing the organic azeotropoobrazovatel.5. The method of claim. 1, characterized