公开(公告)号：JPH0873415A

公开(公告)日：1996-03-19

申请号：JP21921695

申请日：1995-08-28

Applicant: BASF AG

Inventor： UBUE DEINGERUDEITSUSEN ,  GIYUNTAA RAUTO ,  ANDOREASU HENNE ,  PEETAA SHIYUTOOPUSU ,  KARUSUTEN ERAA ,  OIGEN GEERAA

IPC: B01J27/18 ,  B01J27/182 ,  B01J27/185 ,  B01J27/188 ,  C07B61/00 ,  C07C209/60 ,  C07C211/03 ,  C07C211/05 ,  C07C211/06 ,  C07C211/07 ,  C07C211/08 ,  C07C211/35

公开(公告)号：JPH07136403A

公开(公告)日：1995-05-30

申请号：JP15621894

申请日：1994-07-07

Applicant: BASF AG

Inventor： GERUTO KAIBERU ,  TOOMASU KURUUKU ,  HAINTSUUFURIIDORITSUHI ENZEN ,  PEETAA SHIYUTOOPUSU

IPC: B01D3/14 ,  C07C29/80 ,  C07C33/035 ,  C07C33/046

Abstract: PURPOSE: To provide a method with low energy consumption and capable of obtaining high productivity by separating plural fractions under mixed condition from bottom and top of column and proceeding batch distillation at downstream. CONSTITUTION: A starting mixture is introduced to a vessel 2 connected to the top of a distillation column 1. And the mixture is supplied to the distillation column 1, evaporating in a evaporator 9 and collecting a low boiling poit fraction rised inside of the evaporator 1 via a condeser 5 and conduit 6 to separate. Then, in a second separation process, as the same, prescribed process, a middle boiling point component is separated from a mixture collected in a vessel 7 into the vessel 2, and a high boiling poit component is remained in the vessel 7. According to the above procedure energy consumptions used for heating the lower boiling point component are substantially reduced.