Patent ID: 8771479
Filing Date: 2014-07-08
Classification: B01D,C10G

Abstract:
1. A distillation column assembly, characterized in that: a dividing wall column (DWC) that has one inflow point, three outflow points and an internal dividing wall and a typical distillation column that has two inflow points and two outflow points are sequentially connected to each other; and streams of the two outflow points of the DWC are individually introduced into the two inflow points of the typical distillation column without being mixed with each other, wherein, in the case of a direct sequence, the two streams introduced from the DWC into the typical distillation column are an intermediate boiling-point stream and a high boiling-point stream, respectively, and in the case of an indirect sequence, the two streams introduced from the DWC into the typical distillation column are the intermediate boiling-point stream and a low boiling-point stream, respectively.