Effect of Internal and Acid Gas Coupling on the Flue Gas Decarbonization Process in Spouted Beds

ABSTRACT

This study investigates the application of spouted bed technology in CO ₂ capture by incorporating internals and simultaneously establishing a new prediction model for acid gas. First, to address the insufficient gas–solid radial mixing in conventional spouted beds, three enhanced configurations are proposed: a spouted bed with longitudinal vortex generators (LVG SB), an integral multi‐jet spouted‐fluidized bed (IMJSFB), and a spouted bed equipped with swirl blade nozzles (SBN SB). Second, considering the limitation of single‐component gas removal in conventional spouted beds, the simultaneous removal process of coupled acid gases in the spouted bed is explored. The results indicate that the modified systems achieve semidry flue gas decarbonization efficiencies of 75.13%, 79.77%, and 82.59%, respectively. When acid gases are coupled, the decarbonization efficiency decreases to 47.7%.