Numerical simulation of particle erosion coupled with flue gas desulphurization in the spouted bed

Abstract

The addition of an axial swirl vane (ASV) and multi-jet distributor plate (MDP) to a conventional spouted bed (CSB) to form an integrated multi-jet swirling spouted bed (IMSSB) combined with internally reinforced components not only optimized its desulphurization efficiency but also exacerbated the erosion of particles on the bed and the internal components. Coupled study of the particle erosion and desulphurization reaction in the flue gas desulphurization process of an IMSSB was carried out based on the CPFD numerical simulation. The results show that: the desulfurization efficiency of IMSSB is increased by 16.6% compared with that of the CSB; in terms of wall erosion, the maximum erosion rate in IMSSB is about four times that of CSB; the erosion condition increases in the vane from the center to the edges; particle erosion is most severe in the fountain area.