公开(公告)号：AT394382T

公开(公告)日：2008-05-15

申请号：AT06117876

申请日：2006-07-26

Applicant: BASF SE

Inventor： JOEDECKE MICHAEL ,  LANG ORTMUND ,  CAUWENBERGE GUNTHER ,  FRAUENKRON MATTHIAS

IPC: C07D295/00

Abstract: Continuous distillative separation of piperazine from ethylenediamine-piperazine mixture comprises subjecting the piperazine mixture into a cyclic motion, introducing the piperazine mixture into an evaporator unit at 160-170[deg]C, recycling the piperazine mixture into a distillation column and removing the piperazine from the sump of the distillation column after a retention time of approximately 30-60 minutes, where the ethylene diamine is discharged at the upper portion of the distillation column.

公开(公告)号：DE502006000740D1

公开(公告)日：2008-06-19

申请号：DE502006000740

申请日：2006-07-26

Applicant: BASF SE

Inventor： JOEDECKE MICHAEL ,  LANG ORTMUND ,  CAUWENBERGE GUNTHER ,  FRAUENKRON MATTHIAS

IPC: C07D295/00

Abstract: Continuous distillative separation of piperazine from ethylenediamine-piperazine mixture comprises subjecting the piperazine mixture into a cyclic motion, introducing the piperazine mixture into an evaporator unit at 160-170[deg]C, recycling the piperazine mixture into a distillation column and removing the piperazine from the sump of the distillation column after a retention time of approximately 30-60 minutes, where the ethylene diamine is discharged at the upper portion of the distillation column.