| 摘要 |
The invention relates to a method for producing free-flowing and storage-stable dicarboxylic acid crystals (DK), comprising the following steps: a) crystallizing a dicarboxylic acid from a solution (L), which contains a solvent (LM) and dissolved dicarboxylic acid, in a crystallizer (I), a suspension (S) thus being obtained, said suspension containing suspended dicarboxylic acid crystals (sDK) and a mother liquor (M), which contains the solvent (LM) and dissolved dicarboxylic acid, b) transferring the suspension (S) from step a) into a drying device (II; III) by means of a centrifugal pump, c) removing the suspended dicarboxylic acid crystals (sDK) from the mother liquor (M) in the drying device (II; III), dried dicarboxylic acid crystals (tDK) thus being obtained, d) transferring the dried dicarboxylic acid crystals (tDK) from step c) into a storage device (IV) by means of a dense-phase conveying system, the free-flowing and storage-stable dicarboxylic acid crystals (DK) thus being obtained. |
