Control of side-stream pressure-swing distillation and extractive distillation for separating azeotropic mixture of cyclohexane and acetone

被引：6

作者：

Zhu, Lin ^{[1
]}

Hao, Qiang ^{[1
]}

Zeng, Xingyan ^{[1
]}

Zhang, Chunhua ^{[1
]}

Yu, Jianting ^{[2
]}

Lv, Liping ^{[3
]}

Zhou, Qian ^{[1
]}

机构：

[1] Southwest Petr Univ, Sch Chem & Chem Engn, Key Lab Gas Proc Engn, Chengdu 610500, Peoples R China

[2] Shenzhen Gas Corp Ltd, Shenzhen Engn Res Ctr Gas Distribut & Efficient Ut, Shenzhen 518049, Peoples R China

[3] Yangtze Normal Univ, Sch Chem & Chem Engn, Chongqing 408100, Peoples R China

来源：

COMPUTERS & CHEMICAL ENGINEERING | 2023年 / 172卷

关键词：

Side -stream pressure -swing distillation; Extractive distillation; Dynamic control; Cyclohexane; acetone; DESIGN; COLUMN; MINIMUM; SOLVENT;

D O I：

10.1016/j.compchemeng.2023.108166

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

Dynamic controls of a side-stream pressure swing distillation (PSD) and extractive distillation (ED) process for cyclohexane and acetone separation are investigated. The processes operating parameters are optimized with a sequential iterative procedure based on the total annual cost (TAC). The dynamic result shows that for the side -stream PSD process, a modified control structure 2 (CS2) with the composition controller (CC) cascaded with the temperature controller 2 (TC2) can efficiently handle the feed disturbances, with the output signal being the ratio of reboiler duty to feed flow rate (QR/F). For the ED process, a modified control structure 4 (CS4) with the acetone product composition controller as the characteristic control loop can efficiently handle the disturbances which is controlled by the ratio of solvent flow to feed flow rate (S/F). A comparison of the side-stream PSD process and the ED process shows the former has decent dynamic performance.

引用

页数：13

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