基于Aspen辅助CFD模拟的DMT加氢反应器性能研究  

Performance Study of DMT Hydrogenation Reactor Based on CFD Simulation Combining with Aspen

作　　者：刘汶鑫 雍玉梅[2] 陈文强 代佳琳 李梦慧 杨超[2,3] LIU Wenxin;YONG Yumei;CHEN Wenqiang;DAI Jialin;LI Menghui;YANG Chao(School of Chemistry and Chemical Engineering,Nanjing Tech University,Nanjing 211800,China;Institute of Process Engineering,Chinese Academy of Sciences,Beijing 100190,China;School of Chemical Engineering,University of Chinese Academy of Sciences,Beijing 100049,China;College of Environment and Chemical Engineering,Dalian University,Dalian 116622,China)

机构地区：[1]南京工业大学化工学院,江苏南京211800 [2]中国科学院过程工程研究所,北京100190 [3]中国科学院大学化工学院,北京100049 [4]大连大学环境与化学工程学院,辽宁大连116622

出　　处：《化学反应工程与工艺》2025年第1期155-162,共8页Chemical Reaction Engineering and Technology

基　　金：国家自然科学基金(22278403,22108280)。

摘　　要：为了准确描述对苯二甲酸二甲酯(DMT)加氢反应器的性能,结合Aspen和计算流体动力学(CFD)二者优势,基于Aspen辅助CFD进行DMT加氢反应器内气液两相流动、组分传递和传热过程的模拟。采用Aspen计算获得DMT加氢反应动力学模型和热物性关联式,且验证反应模型的有效性。利用用户自定义函数(UDF)将反应动力学模型和热物性关联式引入CFD控制方程组,CFD模拟了DMT加氢反应器床层多相流动、组分传递和反应过程。Aspen辅助CFD计算结果与工艺设计计算结果吻合良好,说明数值方法和所建模型的有效性。基于验证后的CFD多相多组分数学模型,探索催化剂颗粒直径、氢酯比(气相中氢气和液相中DMT物质的量之比)及入口速度分布对床层温度、压降和组分的影响规律,掌握DMT加氢反应器的性能,为其工程设计服务。To accurately describe the performance of the dimethyl terephthalate(DMT)hydrogenation reactor,this paper simulated the gas-liquid flow,species mass and heat transfer and reaction processes for DMT hydrogenation by combing Aspen with computational fluid dynamics(CFD).The DMT hydrogenation reaction model and thermal property correlations were got by Aspen.After verifying the reaction kinetic model,the model thermal property correlations were introduced into CFD simulation by user-defined functions.The multiphase flow,component transfer,and reaction processes in the DMT hydrogenation reactor bed were simulated and the numerical results were in good agreement with the results of design calculation,which indicated that the model and method were reliable.Based on the validated CFD multiphase multi-component mathematical models,the distribution laws of catalyst particle diameter,hydrogen-dimethyl molar ratio on bed temperature,pressure drop,and components were explored.The performance of hydrogenation reactors for DMT is mastered and the results serve for the engineering design.

关 键 词：滴流床 对苯二甲酸二甲酯加氢 计算流体动力学 Aspen辅助计算 多相流 

分 类 号：TQ051.1[化学工程]