Investigation of drying process of non-spherical particle in a pulsed fluidized bed

Gas pulsation is an efficient enhancing way for fluidized bed drying process. In this work, the influence of gas pulsation on mass and heat transfer performance in a fluidized bed with non-spherical wet particles is numerically investigated via the computational fluid dynamics-discrete element method (CFD-DEM) approach, where the liquid transfer between particles and the heat transfer by liquid bridge are considered. The aspect ratio effect of non-spherical particle on drying process is revealed. It is found that the increase of aspect ratio can weaken the overall drying quality. The influence of gas pulsation on the drying of non-spherical particle is analyzed. The results reveal that adjusting a suitable gas pulsation mode can efficiently regulate the drying process of non-spherical wet particles with greater aspect ratios. (c) 2025 Chinese Society of Particuology and Institute of Process Engineering, Chinese Academy of Sciences. Published by Elsevier B.V. All rights are reserved, including those for text and data mining, AI training, and similar technologies.