非球形催化剂颗粒撞击构件的数值计算分析  

Finite element analysis of non-spherical catalyst particle impact the wall of the component

作　　者：吕兆聪 章城 周迪锋 

机构地区：[1]浙江工业大学,杭州310014 [2]上海工业自动化仪表研究院,上海200235

出　　处：《现代制造工程》2016年第6期9-12,89,共5页Modern Manufacturing Engineering

基　　金：国家自然科学基金项目(20876146)

摘　　要：研究催化裂化过程中壁面遭受磨损的问题。采用有限元方法建立单颗和多颗催化剂颗粒撞击构件壁面的有限元模型,运用ABAQUS有限元分析软件作为前处理器,并将颗粒形态设定为非球形(椭球形)。在有限元模型中选取相应的材料本构模型,模拟不同参数(入射速度、撞击角度和撞击次数)的催化剂颗粒撞击构件壁面的过程,建立构件壁面的质量损失与催化剂颗粒参数间的关系,并对模拟结果进行分析。撞击过程中的不同参数对构件壁面的磨损量会产生较大的影响,构件壁面的磨损量随着入射速度、撞击角度和撞击次数的增大而增大,且催化剂颗粒以45°的形态撞击所造成的构件壁面磨损量最小。构件壁面在使用过程中很容易被冲击而造成磨损,且颗粒在不同情况下造成的磨损状况不同。To study the wear problem of wall in catalytic cracking process. Using the finite element method established the single and multiple catalyst particles impact wall and used ABAQUS finite dement analysis software as preprocessor to set particle morphology as non-spherical （spheroidicity）. Selecting appropriate material constitutive model in the finite element to simulate the process of catalyst particles impact the wall with different parameters （ speed, angle of incidence and impact frequency）. Connection is set up between mass loss of the wall and catalyst particle parameters to analysis the simulate results. Research shows that different parameters will make a greater impact to the component wall. The wear rate of catalyst particle is increased with the in- creased of impact velocity, angles and impact frequency, the wear rate was the minimum when catalyst particle impact the wall as angle of 45 degree. Component of the wall is easy to shock and cause wear and the particles cause vary wear in different condi- tions.

关 键 词：催化剂颗粒 非球形 有限元法 磨损 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]