化工进展2018，Vol.37Issue(4)：1257-1266,10.DOI:10.16085/j.issn.1000-6613.2017-2179
喷射反应器内气液两相流体动力学特征
Hydrodynamic characteristics of gas-liquid two phase flow in jet reactors
摘要
Abstract
Jet reactors are important equipment for process intensification and they have been applied in many industries in recent years. They can significantly enhance the mass and heat transfer,speed up the reaction rate and promote reaction yield. In this work,two structural styles of jet reactors and the hydrodynamic characteristics of gas-liquid two phase flow in these reactors were reviewed. Firstly,configurations and working principles of these two kinds of jet reactors were described. Secondly,influences of operating and structural parameters on the gas induction rate and bubble diameter were analyzed,respectively. It was pointed out that more studies should be conducted on the mechanisms of gas entrainment and bubble breakage. Finally,reviews on the modeling of gas-liquid flow using the computational fluid dynamics in the jet reactors were presented. It was noteworthy that although Mixture multiphase model can reproduce gas entrainment rate accurately,it cannot be employed to predict the processes of bubble motion and breakage,which were very important for the hydrodynamic characteristics. It was recommended that these two processes can be well described by combining Euler-Euler model with Population Balance Model. When the Population Balance Model was employed,an appropriate bubble breakage frequency model should be set up at first. Additionally, catalyst particle phase should also be taken into account since it existed in various multiphase catalytic reactions in industrial application,which can influence flow patterns. Gas-liquid-solid three phase flow simulation can produce more realistic results and it would play an important role in guiding the industrial applications of the jet reactors.关键词
喷射反应器/气液两相流/气体吸入量/气泡/计算流体力学Key words
jet reactor/gas-liquid flow/gas entrainment rate/bubble/computational fluid dynamics分类
化学化工引用本文复制引用
陈阿强,黄青山,耿淑君,杨超..喷射反应器内气液两相流体动力学特征[J].化工进展,2018,37(4):1257-1266,10.基金项目
国家重点研发计划(2016YFB0301701)、国家自然科学基金(91434114,21376254)及中国科学院科研装备研制项目(YZ201641). （2016YFB0301701）
