FCC提升管内气液固三相流动的数值模拟研究  

Numerical Simulation of Gas-Solid-Liquid Three Phase Flow in FCC Riser

作　　者：刘英杰[1] 杨基和[1] 蓝兴英[2] 高金森[2] LIU Yingjie;YANG Jihe;LAN Xingying;GAO Jinsen(Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology,Changzhou University,Changzhou 213164,China;State Key Laboratory of Heavy Oil Processing,China University of Petroleum,Beijing 102249,China)

机构地区：[1]常州大学江苏省绿色催化材料与技术重点实验室,江苏常州213164 [2]中国石油大学(北京)重质油国家重点实验室,北京102249

出　　处：《常州大学学报（自然科学版）》2018年第2期7-13,共7页Journal of Changzhou University：Natural Science Edition

基　　金：国家自然科学基金项目(21306014);重质油国家重点实验室开放基金资助项目(SKLOP20163001);江苏省绿色催化材料与技术实验室开放课题(BM2012110)

摘　　要：采用Fluent软件,耦合提升管内油气、雾滴和催化剂间的动量、热量和质量传递,建立了气液固三相作用模型。采用此模型对FCC提升管进料雾滴的气化过程以及气液固三相流动进行了模拟研究,考察了雾滴在提升管内的气化时间,以及不同碰撞几率下各相的体积分数分布、液固传质速率和催化剂上吸附的液相含量。结果表明,非气化组分的气化时间很短,对气液固三相流动的影响很小,但其在催化剂上的大量吸附会降低催化剂活性,最终影响FCC反应效果。Using Fluent software,coupling the momentum,heat and mass transfer models of oil gas,droplets and catalysts,a gas-liquid-solid flow model was proposed.Based on the above model,the gasification time of the liquid droplet,the liquid and solid volume fraction distributions,the liquid and solid mass transfer rates,as well as the contents of liquid adsorbed in catalysts were analyzed.The results showed that the gasification time of liquid droplets is very short.The existence of high-boiling-point components has little effect on flow behaviours.However,the mass transfer of liquid to solid phase decreases the activity of catalysts,thus impact the final FCC reaction effects.

关 键 词：催化裂化提升管 三相流化 数值模拟 

分 类 号：TQ018[化学工程]