Numerical and experimental study on the particle erosion and gas–particle hydrodynamics in an integral multi-jet swirling spout-fluidized bed

Abstract

In this paper, using the computational fluid dynamics based on Euler Lagrange and the commercial software Barracuda VR, the gas–particle hydrodynamics and the erosion of particles on the inner wall and internal components of the spouted bed in the integrated multi-jet swirling spout-fluidized bed (IMSSFB) are studied. Erosion experiments have obtained the characterization of particle erosion on internal components and verified the relevant numerical models. The results show that: the particle distribution within the IMSSFB is uneven due to the cyclonic effect of the axial swirl vane (ASV), resulting in particle erosion for the ASV being concentrated on one side; when the gas reaches the top, too high an erosion gas velocity leads to gas backflow. As the filling height increases, there is a tendency for the erosion position of the particles on the ASV to expand upwards. However, the effect of increasing gas velocity on the erosion position is insignificant.