Single-pot extractive double divided wall column for Acetonitrile, Ethanol, and water Separation: Design and control

An integrated single-pot double divided wall column (DDWC) process is designed for separating acetonitrile, ethanol and water into its constituent pure components using dimethyl sulfoxide (DMSO) as the homogenous extractive entrainer. Comparison with the recently reported side-stream extractive dist...

Full description

Saved in:
Bibliographic Details
Published in:Separation and purification technology 2025-05, Vol.357, p.130162, Article 130162
Main Authors: Gupta, Aayush, Singh Kumaiya, Hemant, Srivastava, Prakhar, Kaistha, Nitin
Format: Article
Language:English
Subjects:
Azeotrope
Divided wall column
Extractive distillation
Plantwide control
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:An integrated single-pot double divided wall column (DDWC) process is designed for separating acetonitrile, ethanol and water into its constituent pure components using dimethyl sulfoxide (DMSO) as the homogenous extractive entrainer. Comparison with the recently reported side-stream extractive distillation (SSED) design with three columns shows the single-pot process to be more cost-effective and energy-efficient. The SSED process has a Total Annualized Cost (TAC) that is higher by 9.91% and an energy consumption that is higher by 7.27%. Also, a decentralized temperature inferential control system is shown to effectively reject large throughput and moderate feed composition changes to establish the controllability of the proposed design. The developed single-pot process is thus a promising alternative, particularly for space-constrained production facilities.
ISSN:1383-5866
DOI:10.1016/j.seppur.2024.130162