Numerical simulation of two-phase flow and droplet breakage of glycerin-water mixture and kerosene in the cyclone reactor  

作　　者：Yanni Chi Rui Zhang Xianghai Meng Jian Xu Wei Du Haiyan Liu Zhichang Liu 

机构地区：[1]State Key Laboratory of Heavy Oil Processing,China University of Petroleum-Beijing,Beijing 102249,China

出　　处：《Chinese Journal of Chemical Engineering》2021年第6期150-159,共10页中国化学工程学报（英文版）

基　　金：financial support of the Natural Science Foundation of China(21890763);National Science and Technology Innovation Leading Talents Project of National Ten Thousand People Plan。

摘　　要：A liquid-liquid cyclone reactor(LLCR)was designed to achieve mixing-reaction-separation integration during isobutane alkylation catalyzed by ionic liquids.However,studies of the droplets deformation and breakage in the kind of reactors are lacking.In this work,the research studied the velocity distribution,pressure field,and turbulent field to investigate the flow pattern and the main energy loss location in the LLCR through the computational fluid dynamics(CFD)method.The simulation results were verified by experiemnts to prove the correctness of the model.Then the deformation and breakage process of droplets,and the influencing factors of droplets breakage were studied by remodeling which was based on the tangential velocity distribution result of the three dimensional model.The three dimensional simulation results clearly showed that the pressure of the LLCR was mainly concentrated in the cone section and fluid turbulent motion was the most intense near the lateral wall.The reconstruct the results of the two dimensional model clearly showed that the deformation and breakage location of droplets were mainly occurred in the velocity boundary layer,while it was difficult to break in the mainstream region.In addition,low surface tension and high Weber number had a positive effect on droplet breakage.

关 键 词：Liquid-liquid cyclone reactor Ionic liquid separation Droplet deformation Droplet breakage Computational fluid dynamics 

分 类 号：TQ202[化学工程—有机化工]