Research on rapid reactor for propylene high-temperature chlorination based on NSGA-Ⅲ multi-objective optimization
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:FCl2=0.1 mol/s,FC3H6=0.6 mol/s,Tpreheat=347.0℃,VCSTR=0.0425 m3,and VPFR=0.0173 m3.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℃.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.
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维普
