化学工程2025，Vol.53Issue(7)：72-76,89,6.DOI:10.3969/j.issn.1005-9954.2025.07.013
基于Aspen Plus的氯苯硝化工艺的模拟与优化
Simulation and optimization of chlorobenzene nitrification process based on Aspen Plus
摘要
Abstract
The nitration reaction of CB(chlorobenzene)is highly dangerous,and it is necessary to regulate and optimize its production process parameters.Therefore,the kinetic models of the CB nitration reactions were developed and validated.Sensitivity analysis was employed to optimize the process parameters,and a comprehensive process simulation was carried out.The results show that the simulated CB conversion rates are in good agreement with the values reported in the literature,with an error margin within±8％.At a reaction temperature of 50℃,the selectivity for p-NCB(p-nitrochlorobenzene)is relatively high,and the reaction rate is rapid.However,an increase in the recycle ratio RR leads to greater back-mixing,which in turn increases the yield of DNCB(dinitrochlorobenzene),thereby adversely affecting the production of p-NCB.Under the optimized conditions of residence time of 20 s,temperature of 50 ℃,m(HNO3)∶m(CB)=0.85,and a mass ratio m(HNO3)∶m(H2SO4)=0.6,the single-pass conversion rate of CB reaches 63.37％,the single-pass conversion rate of HNO3 is 84.30％,the yield of p-NCB is 65.09％,and the yield of DNCB is 21.73％.The energy consumptions of the top condensers and bottom reboilers of columns T101 and T102 are 275.33,521.59,317.85 and 318.40 kW,respectively.These research results can provide certain references for the theory and engineering application of the chlorobenzene nitration reaction process.关键词
氯苯/硝化反应/工艺模拟/Aspen Plus/工艺优化Key words
chlorobenzene/nitration reaction/process simulation/Aspen Plus/process optimization分类
化学化工引用本文复制引用
张元熹,王辰杨,向阳..基于Aspen Plus的氯苯硝化工艺的模拟与优化[J].化学工程,2025,53(7):72-76,89,6.基金项目
国家自然科学基金资助项目(22078009) （22078009）
