化工学报2025，Vol.76Issue(6)：2549-2558,10.DOI:10.11949/0438-1157.20241115
异戊二烯-正戊烷分离工艺的热力学分析及优化
Thermodynamic analysis and optimization of isoprene/n-pentane separation process
摘要
Abstract
For the isoprene-pentane azeotropic system commonly found in C5 fractions,this paper proposes a method to evaluate the extractive distillation process with the help of an intelligent optimization algorithm and to design it based on thermodynamic principles.First,a conceptual design is developed based on the residue curve map,followed by closed-loop global optimization of process parameters using an improved genetic algorithm.The optimization is carried out with economic performance,energy efficiency,and extractive section separation efficiency(unique to extractive distillation)as evaluation criteria.Subsequently,the TOPSIS(technique for order preference by similarity to ideal solution)method is employed to select the optimal design scheme from the Pareto front solutions,followed by an analysis of the optimization results from the thermodynamic perspective.The results indicate that the best scheme excels in separation efficiency,economic viability,and energy utilization;reducing the amount of extraction agent,appropriately increasing the number of trays,and optimizing the reflux ratio can effectively enhance separation efficiency while lowering costs.This research provides theoretical foundations and design guidance for the efficient separation of isoprene and pentane in industrial applications.关键词
共沸物/整体优化/萃取精馏/改进的遗传算法/热力学Key words
azeotrope/global optimization/extraction distillation/improved genetic algorithm/thermodynamics分类
化学化工引用本文复制引用
李琳,王明媚,宋二伟,王雯雯,张耀昌,王二强..异戊二烯-正戊烷分离工艺的热力学分析及优化[J].化工学报,2025,76(6):2549-2558,10.基金项目
北京市自然科学基金项目(2222037) （2222037）
