Numerical Analysis of Semi-dry Flue Gas Desulfurization Process in the 3D Spouted Bed

This paper presents a numerical study of gas-solid two-phase flow and water vaporization in a 3D powder-particle spouted bed (PPSB) by means of the combined approach of the Eulerian-Eulerian two-fluid model (TFM) and kinetic theory of granular flows (KTGF). The simulation shows that the gas temperature in the injection area is higher than water and particles, and the three-phase temperatures in other areas are similar. The water vaporization rate is higher at the junction of the injection area and the annulus area, lower in the center of the injection area, and lowest in the annulus area. By increasing gas velocity and liquid temperature, reducing gas humidity, promoting water vaporization.