Design And Control Analysis Of The Side-Stream Extractive Distillation Column With Low Concentration Intermediate-Boiling Entrainer

CHEMICAL ENGINEERING SCIENCE(2022)

引用 32|浏览2
暂无评分
摘要
Side-stream extractive distillation (SSED) column has attracted increasing attentions due to its simple structure for separating the binary azeotropes using intermediate-boiling entrainer. However, the high-concentration intermediate-boiling entrainer may lead to a disadvantage of high energy consump-tion. To address this issue, an improved design of the SSED column with low-concentration intermediate-boiling entrainer is proposed to improve economic performances without adversely affecting its control-lability for separating binary azeotropes. Economic optimization and sensitivity analysis are employed for designing SSED column using low-concentration intermediate-boiling entrainer for separating the methanol/toluene azeotrope, in which the advantages of cost reduction and energy saving have been observed. Following that, multiple case studies have been conducted to demonstrate the superiority of low-concentration intermediate-boiling entrainer in energy saving. Finally, dynamic control analysis illustrates that the SSED column using low-concentration intermediate-boiling entrainer can react effec-tively against the feed flowrates fluctuations and compositions disturbances by adopting control struc-tures with composition controller. (c) 2021 Elsevier Ltd. All rights reserved.
更多
查看译文
关键词
Side-stream extractive distillation column, Intermediate-boiling entrainer, Entrainer concentration, Energy consumption, Dynamic control
AI 理解论文
溯源树
样例
生成溯源树,研究论文发展脉络