化工进展2025，Vol.44Issue(3)：1253-1262,10.DOI:10.16085/j.issn.1000-6613.2024-0416
萃取精馏分离丙酮-正庚烷的模拟与控制
Simulation and control of acetone/n-heptane separation by extractive distillation
摘要
Abstract
Acetone and n-heptane are frequently utilized solvents in the chemical industry and are commonly found in industrial wastewater.In this paper,1-chlorobutane was used as an intermediate boiling point entrainer to separate acetone/n-heptane azeotropes using a sidestream extractive distillation(SSED)process and an extractive distillation with internally circulated(ICED)process,respectively.The two processes were optimized using a multi-objective genetic algorithm with total annual cost,CO2 emission,and thermodynamic efficiency as evaluation indices,and the optimal equipment parameters and operating parameters were obtained.The optimization results indicated that the ICED process was more cost-effective,environmentally friendly,and thermodynamically efficient than the SSED process.In addition,the dynamic characteristics of the separation of acetone/n-heptane azeotropes using both methods were investigated.The dynamic characteristics of the separation of acetone/n-heptane azeotropes using both the SSED and ICED were investigated,and a reasonable control scheme was designed.After introducing disturbances in feed flow and feed composition,the products of both processes could be recovered close to the set values.The control effects of both processes were quantified using absolute deviation integrals,and the results showed that the ICED had better dynamic controllability.关键词
共沸物/萃取精馏/优化/过程控制Key words
azeotrope/extractive distillation/optimization/process control分类
化学化工引用本文复制引用
孔洁,李沅欣,孙兰义..萃取精馏分离丙酮-正庚烷的模拟与控制[J].化工进展,2025,44(3):1253-1262,10.基金项目
国家自然科学基金(22278437). （22278437）
