公开(公告)号：EP2755937B1

公开(公告)日：2019-10-30

申请号：EP12770267.8

申请日：2012-09-13

申请人： Daikin Industries, Ltd.

发明人： CHAKI, Takehiro ,  TAKAHASHI, Kazuhiro ,  YOSHIMI, Hitoshi ,  TANAKA, Yoshinori ,  IWANAGA, Yuusuke

IPC分类号： C07C17/38 ,  C07C17/383 ,  C07C19/10 ,  C07C21/18 ,  C07C19/01 ,  C07C17/20 ,  C07C17/25

公开(公告)号：EP2755937A2

公开(公告)日：2014-07-23

申请号：EP12770267.8

申请日：2012-09-13

申请人： Daikin Industries, Ltd.

发明人： CHAKI, Takehiro ,  TAKAHASHI, Kazuhiro ,  YOSHIMI, Hitoshi ,  TANAKA, Yoshinori ,  IWANAGA, Yuusuke

IPC分类号： C07C17/38 ,  C07C17/383 ,  C07C19/10 ,  C07C21/18 ,  C07C19/01

摘要： The present invention provides a method for purifying chlorinated hydrocarbon(s), comprising cooling a mixture containing hydrogen fluoride and at least one chlorinated hydrocarbon selected from the group consisting of 2-chloro-3,3,3-trifluoropropene, 2,3-dichloro-3,3-difluoropropene, 1,2,3-trichloro-1,1-difluoropropane, and 1,1,1,2,3-pentachloropropane to cause liquid-liquid separation of the mixture into an upper liquid phase having a high hydrogen fluoride concentration and a lower liquid phase having a high chlorinated hydrocarbon concentration, and a method for purifying a chlorinated hydrocarbon, comprising subjecting the lower liquid phase obtained by the liquid-liquid separation to a distillation operation. According to the present invention, a chlorinated hydrocarbon can be purified by separating and removing hydrogen fluoride from a chlorinated hydrocarbon-hydrogen fluoride mixture under simple and economically advantageous conditions.