Mathematical modeling of CO2 capture in a semi-dry spouted bed reactor

► The hydrodynamics of the PPSB is predicted by a heterogeneous non-isothermal model. ► The superficial gas velocity has considerable effects on CO2 removal efficiency. ► The approach to saturation temperature affects considerably the removal efficiency. ► Ca/C molar ratio does not influence the performance of the reactor. ► CO2 inlet concentration affects the kinetics of reaction of CO2 and Ca(OH)2.