公开(公告)号：ID22856A

公开(公告)日：1999-12-09

申请号：ID990760

申请日：1998-01-29

Applicant: BASF AG

Inventor： BESSLING BERND ,  HASSE HAND ,  PLUCKHAN JURGEN ,  MAYER THOMAS ,  AUER HEINZ

IPC: C07D301/32 ,  C07D303/04 ,  B01D3/32

Abstract: In a process for purification of ethylene oxide by distillation an aqueous mixture comprising ethylene oxide, formaldehyde and at least 5% by weight of water is introduced via a feed into a distillation apparatus comprising at least one distillation column, the mixture being introduced at a height above the bottom of at least 8 theoretical stages, the ethylene oxide is taken off at the top and in the bottom phase a mixture is obtained which contains less than 5% by weight of ethylene oxide.