2种重油悬浮床加氢反应器流体力学特性的比较  

Comparison of Hydrodynamic Characteristics in Two Heavy Oil Slurry Bed Hydrocracking Reactors

作　　者：薄守石 王剑 白飞 孙兰义 

机构地区：[1]中国石油大学化学工程学院,山东青岛266580

出　　处：《石油学报（石油加工）》2015年第6期1408-1415,共8页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：国家自然科学基金项目(21276279);中央高校基本科研业务费专项资金项目(27R1204008A);高等学校博士学科点专项科研基金新教师类资助课题(20120133120004)资助

摘　　要：以重油悬浮床加氢常用的鼓泡床和环流反应器为研究对象，选用欧拉两相流模型和RNGk-e湍流模型对其在重油一氢气实际操作体系和工况下进行计算流体力学（CFD）模拟，考察不同表观气速下（O．01～0．1m／s）2种反应器内整体气含率、气含率和液速径向分布的异同。结果表明，2种反应器内均形成了液相循环流动，但环流反应器的流动特性优于鼓泡床反应器，因此在模拟工况下环流反应器更适合重油悬浮床加氢工艺。Two-dimensional axisymmetric CFD （Computational Fluid Dynamics） simulations of bubble column and airlift reactors were performed based on Eulerian multiphase model and RNG k-e turbulence model. The hydrodynamic characteristics of bubble column and airlift reactors, including total gas holdup, gas holdup and liquid velocity distribution, operation with a heavy oil-hydrogen system, were compared in a range of superficial gas velocities （0.01- 0.1 m/s）. The results indicated that liquid circulation flow was formed in the two slurry bed reactors. And airlift reactor is better suited for slurry bed hydrocracking process than bubble column reactor because of its larger gas holdup and liquid velocity.

关 键 词：悬浮床加氢 鼓泡床反应器 环流反应器 CFD模拟 流体力学 

分 类 号：TQ021.1[化学工程] TE621[石油与天然气工程—油气加工工程]