Dividing wall columns for heterogeneous azeotropic distillation
Artikel i vetenskaplig tidskrift, 2015

© 2015 The Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved. The aim of this work is to implement heterogeneous azeotropic distillation schemes in a dividing wall column (DWC) for a feed mixture of water (W), acetic acid (HAC) and an organic component (X). The original design makes use of X to act as an entrainer to facilitate the separation of water and HAC, and we also propose a DWC design based on this idea. This DWC design reduces the capital cost, but the energy usage is almost unchanged. To achieve energy savings and further reductions in capital costs, we need to use a Petlyuk DWC. We introduce isobutyl acetate (IBA) as an additional entrainer for the Petlyuk DWC, and achieve energy savings of about 20%.

Heterogeneous azeotropic distillation

Energy saving

Petlyuk arrangement

Dividing wall column (DWC)

Författare

Q.K. Le

Norges teknisk-naturvitenskapelige universitet

I.J. Halvorsen

SINTEF

Oleg Pajalic

Chalmers, Kemi och kemiteknik, Kemiteknik, Kemisk miljövetenskap

S. Skogestad

Norges teknisk-naturvitenskapelige universitet

Chemical Engineering Research and Design

0263-8762 (ISSN) 1744-3563 (eISSN)

Vol. 99 111-119

Ämneskategorier

Kemiska processer

Kemiteknik

DOI

10.1016/j.cherd.2015.03.022

Mer information

Senast uppdaterat

2019-07-10