文丘里热解反应器内气-液两相流流动特性的数值模拟  

Numerical Simulation of Gas-Liquid Two-phase Flow Characteristics in Ventury Pyrolysis Reactor

作　　者：吕超[1] 周楠[1] 孙铭赫 LYU Chao;ZHOU Nan;SUN Minghe(School of Control Engineering,Northeastern University,Qinhuangdao 066004,China)

机构地区：[1]东北大学控制工程学院,河北秦皇岛066004

出　　处：《有色金属工程》2020年第10期53-57,共5页Nonferrous Metals Engineering

基　　金：河北省自然科学基金资助项目(E2019501085);河北省教育厅基金资助项目(QN2019312)。

摘　　要：利用CFD软件Fluent14.5,Standardk-e湍流模型、Eulerian多相流模型以及能量方程对从氯化镁热解制备氧化镁的文丘里热解反应器内的气-液两相流进行了数值模拟研究,通过多组模拟最终确定了实验模拟的最优工艺条件。结果表明,熔融氯化镁入口温度的改变并不能改变反应器内流场的分布规律,只是相应提高了反应器内整体温度,而熔融氯化镁入口速度的变化以及喉管与引流管间夹角的变化都能较大程度上影响反应器内的流场;最佳喉管与引流管的夹角为75°、氧气入口速度为0.5m/s、熔融氯化镁的入口速度为0.9m/s。Using CFD software Fluent 14.5,the gas-liquid two-phase flow in Venturi pyrolysis reactor for preparating magnesium oxide from magnesium chloride was numerically simulated using Standard k-e turbulence model,Eulerian multiphase flow model and energy equation.Through multiple sets of simulations,the optimal process conditions for experimental simulation were finally determined.The results show that the change of inlet temperature of molten magnesium chloride does not change the distribution of flow field in the reactor,but increases the overall temperature of the reactor accordingly.The change of inlet velocity of molten magnesium chloride and the angle between throat and drain pipe can influence the flow field in the reactor to a great extent.The angle between laryngeal tube and drainage tube is 75 degrees.The inlet velocities of oxygen and molten magnesium chloride are 0.5 m/s and 0.9 m/s,respectively.

关 键 词：热解 数值模拟 高纯氧化镁 优化工艺 

分 类 号：TU642[建筑科学—建筑技术科学]