发明授权
US4720326A Process for working-up aqueous amine solutions 失效
处理胺水溶液的方法

Process for working-up aqueous amine solutions
摘要:
An amine is separated from an aqueous solution of amine and volatile organic compounds by distillation in a column. The vapors generated during distillation are condensed. The condensed vapors are then passed into a separating device in which the volatile organic compounds are removed. The liquid remaining in the separating device is then fed to the head of the distillation column. Water is removed from the column in a sidestream and diamine is the residue. This process is particularly effective in recovering aromatic diamines from solutions which accumulate during hydrogenation of dinitro aromatic compounds.
公开/授权文献
信息查询
0/0