Feasibility of Divided Wall Column for High Purity and High Recovery Methanol Separation

Dominik Kroiss, Isuru Abeykoon Udugama, and Wei Yu

Keywords

Divided wall column, Methanol distillation column, Ultrahigh purity

Abstract

The Divided Wall Column (DWC) can be a good optional to separate the final products since it can reduce around 30% energy costs comparing to traditional distillation columns. In this paper, we will design a DWC for methanol distillation in which the ultra-high pure methanol (product impurities <10 ppm wt%) will be produced. Through the simulation models built in Aspen HYSYS, three type columns: Side-Draw Column (SDC), Direct Sequence (DS) and DWC are compared. The feasibility of the DWC for the methanol separation is analyzed.

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