Substance mixture comprising the aromatic amines, in particular the processing method of the crude aniline material mixture

摘要

The present invention relates to a method for processing a material mixture comprising an aromatic amine, aromatic amine is aniline or 2,4-diaminotoluene, substance mixtures are first material mixture and an aromatic comprises a compound having a higher boiling point than the amine and aromatic amines, I) a first material mixture by distillation separated in a first distillation unit (110,1130) separating at least some aromatic amines, and even obtain a first bottom product, the first bottom product, comprising the step of taking out from the first distillation unit (110,1130), is taken out and immediately the bottom product from the first distillation unit (110,1130) It is diluted with a composition comprising a condensate top product and / or methanol from different distillation unit and the first distillation unit.