基于NSGA-Ⅲ多目标优化的丙烯高温氯化快速反应器研究  

Research on rapid reactor for propylene high-temperature chlorination based on NSGA-Ⅲmulti-objective optimization

作　　者：李明 韩路长[3] 罗和安[3] LI Ming;HAN Luchang;LUO Hean(School of Resource and Environment,Hunan University of Technology and Business,Changsha 410205,Hunan,China;Hunan Provincial Key Laboratory of Carbon Neutrality and Intelligent Energy,Changsha 410205,Hunan,China;School of Chemical Engineering,Xiangtan University,Xiangtan 411105,Hunan,China)

机构地区：[1]湖南工商大学资源环境学院,湖南长沙410205 [2]碳中和与智慧能源湖南省重点实验室,湖南长沙410205 [3]湘潭大学化工学院,湖南湘潭411105

出　　处：《化工学报》2024年第12期4547-4554,共8页CIESC Journal

基　　金：国家自然科学基金项目(22378340)。

摘　　要：基于对丙烯高温氯化反应特性分析构建理想(IR)反应器模型和计算流体力学(CFD)反应器模型,并对反应动力学模型和反应器模型的准确性进行验证。以丙烯流量、氯气流量、丙烯预热温度、反应器体积作为决策变量,分别采用单目标算法和多目标优化算法对决策变量进行优化。结果表明多目标优化算法结果较好,更趋向于全局考虑,得到的5个决策参数分别为F_(Cl_(2))=0.1 mol/s、F_(C_(3)H_(6))=0.6 mol/s、T_(preheat)=347.0℃、V_(CSTR)=0.0425 m^(3)、V_(PFR)=0.0173 m^(3),氯气与丙烯转化率分别为100%、17.26%,3-氯丙烯选择性为97.177%,出口温度为471.23℃。构建的IR反应器模型经多目标优化得到的反应参数及结果相比目前国内外工业数据具有较大优势,在反应器设计方面,丙烯/氯气摩尔比、物料预热温度等反应参数对工业应用具有理论指导意义。Based on the analysis of the characteristics of high-temperature chlorination reaction of propylene,ideal(IR)and computational fluid dynamics(CFD)models are constructed,and the accuracy of reaction kinetics model and reactor model is verified.Taking propylene flow rate,chlorine flow rate,propylene preheat temperature,CSTR(continuous stirred tank reactor)volume,and PFR(plug flow reactor)volume as decision variables,we optimized the reactor using both single-objective and multi-objective optimization algorithms.The results indicate that the multi-objective optimization algorithm yielded better outcomes,with a more comprehensive global consideration.The optimized values for the five decision parameters are:F_(Cl_(2))=0.1 mol/s,F_(C_(3)H_(6))=0.6 mol/s,T_(preheat)=347.0℃,V_(CSTR)=0.0425 m^(3),and V_(PFR)=0.0173 m^(3).The conversion rates of chlorine and propylene are 100%and 17.26%,respectively.The selectivity for 3-chloropropene is 97.177%,and the outlet temperature is 471.23°C.The reaction parameters and results obtained through multi-objective optimization of the IR reactor model exhibit significant advantages compared to current industrial data both domestically and internationally.These optimized parameters,such as reactor design,propylene/chlorine molar ratio,and material preheating temperature,provide theoretical guidance for industrial applications.

关 键 词：氯化反应 3-氯丙烯 反应器 模拟 优化 丙烯 

分 类 号：TQ322.4[化学工程—合成树脂塑料工业]