基于电场和流场耦合的FCC油浆脱固性能分析  

Solids Removal Performance of FCC Slurry Based on the Coupling of Electric Field and Flow Field

作　　者：李强[1] 李安萌 郭林飞 曹昊 许伟伟[1] 王振波[1] LI Qiang;LI Anmeng;GUO Linfei;CAO Hao;XU Weiwei;WANG Zhenbo(College of New Energy, China University of Petroleum, Qingdao 266580, China)

机构地区：[1]中国石油大学(华东)新能源学院,山东青岛266580

出　　处：《石油学报（石油加工）》2021年第5期1022-1030,共9页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：山东省自然科学基金面上项目(ZR2019MEE033);中央高校基本科研业务费专项资金项目(19CX02035A)资助。

摘　　要：基于有限元分析方法,建立了静电分离场的三维数值仿真模型,模拟得到电场和流场耦合作用下催化剂颗粒的运动轨迹,分析了静电分离器内催化裂化(FCC)油浆流场对催化剂颗粒运动和吸附的影响,颗粒受力与其速度间的关系,以及电压、进口流速等对粒子吸附效率的影响。结果表明:静电分离器中催化剂颗粒的主要吸附位置是填料球接触点处;静止流场中颗粒速度与所受介电泳力之间存在正相关关系,同一电压下,颗粒在静止流场中的分离效率高于在运动流场中的分离效率;颗粒分离效率随施加电压增加而提高,随颗粒在电场入口流速增大而降低。研究结果可为提高FCC油浆静电分离效率和建立连续运行静电分离系统提供参考。Based on the finite element analysis method,a three-dimensional numerical simulation model of the electrostatic separation field was established,and the trajectory of catalyst particles under coupling action of electric field and flow field was also simulated.Effects of fluid flow field of the catalytic cracking(FCC)slurry in the electrostatic separator on the movement and adsorption of catalyst particles were investigated.In addition,both relationship between the force on particles and their velocities and effects of voltage and inlet flow rate on the adsorption efficiency of particles were analyzed.Simulation results suggested that the main adsorption position of catalyst particles in the electrostatic separator was the contact point of the packing balls,and there was a positive correlation between the particle velocity and the dielectrophoretic force received in the static flow field.Under the same voltage,separation efficiency of particles in static flow field was higher than that in the moving flow field.It was also found the separation efficiency increased with applied voltage,but disproportional with the inlet flow rate.Research results can provide guidance for improving the efficiency of FCC slurry electrostatic separation,and also help to establish continuous operation electrostatic separation system.

关 键 词：催化裂化油浆 静电分离 催化剂颗粒 吸附 流场 

分 类 号：TQ028.5[化学工程]