基于多组分 DQMOM 模型的 FCC 辅助纳米颗粒混合体系流化研究

According to the influencing factors of nanoparticle agglomeration and breakage, the calculation method of Re was modified based on the Gidaspow drag model, and a multi-component DQMOM model was proposed. The flow process of nanoparticles in a micro fluidized bed, as well as the changes in the number and diameter of agglomerates, are numerically simulated. The experimental values are in good agreement with the simulation results, verifying the accuracy and reliability of the micro fluidized bed model. The mixed nanoparticles of SiO₂ and ZnO are simulated to explore the effect of adding large particles to improve fluidization. The results show that a higher content of particles with better fluidization performance can enhance the fluidization performance of the mixed particles. When the content of SiO₂ particles is relatively high, smaller-sized particles have a better effect on improving the fluidization performance; when the content of ZnO particles is relatively high, particles with larger density have a better effect. When the content of particles with good fluidization performance is relatively high, adding a small amount of large particles can effectively improve the fluidization performance of the mixed particles.