RECOVERY COLUMN CONTROL
    8.
    发明公开

    公开(公告)号:EP3390350A1

    公开(公告)日:2018-10-24

    申请号:EP16819384.5

    申请日:2016-11-23

    申请人: Ineos Europe AG

    IPC分类号: C07C253/34 C07C255/08

    CPC分类号: C07C253/34 C07C255/08

    摘要: An extractive distillation process includes providing a mixture that includes acrylonitrile and acetonitrile to at least one distillation column; contacting the mixture that includes acrylonitrile and acetonitrile with aqueous solvent to provide an acrylonitrile-water azeotrope; and separating the acrylonitrile-water azeotrope from the acetonitrile to provide an overhead stream and a sidestream. The process includes controlling overhead stream impurities and sidestream impurities using a flow of the aqueous solvent added to the distillation column and a temperature of the distillation column.