Numerical simulation of catalyst particles impacting onto a surface based on finite element method

YUAN Jian， SHENG Wen-jun
（The MOE Key Laboratory of Special Purpose Equipment and Advanced Processing，
Zhejiang University of Technology， Hangzhou 310032， China）

Abstract： In order to solve the problems of many components of the catalytic cracking unit caused failure that in long-term continuous impact for the catalyst particles，the finite element method was applied to the simulation. It was analyzed that the effect of catalyst particles impact velocity，angle and material of erosive of different materials on the surface for the case of single catalyst particles impact and the effect of the surface. The numerical analysis model of catalyst particles impacting onto a surface was established. The catalysts particles with different speed，size，impact angle，and different catalyst particle materials impact onto a surface and influence of the surface were researched. The relationship between catalyst particles deformation and erosive of the surface was analyzed. The catalyst particles parameters were optimized. In order to reduce catalyst particles deformation and erosive of the surface，the technical measures were proposed. The results show that，the catalytic cracking unit can work on long-term safety and stability.
Key words： catalyst particles parameters； erosive of the surface； catalyst deformation； finite element method（FEM）； numerical simulation