公开(公告)号：WO2015123144A1

公开(公告)日：2015-08-20

申请号：PCT/US2015/015031

申请日：2015-02-09

Applicant: INVISTA NORTH AMERICA S.A.R.L.

Inventor： NEATE, Robert ,  HAMILTON, Clive

IPC: B01J19/24 ,  B01J19/32 ,  C08G63/183 ,  C08G63/78

CPC classification number: B01J19/32 ,  C08G63/785

Abstract: Disclosed are counter-current reaction columns with improved pressure drop and temperature profiling. Such improvements result in a higher IV prepolymer. The improvements over prior art designs include reducing the length to diameter ratio of the cylindrical section of the column while maintaining the same active volume, and / or including an external heat exchanger. Further, inert gas flowrate and prepolymer residence time is increased.

Abstract translation: 公开了具有改进的压降和温度分布的逆流反应塔。 这种改进导致较高的IV预聚物。 相对于现有技术设计的改进包括在维持相同的有效容积的同时减小柱的圆柱形部分的长径比，和/或包括外部热交换器。 此外，惰性气体流速和预聚物停留时间增加。