Design of energy-saving CO2 capture process using circulating fluidized bed for power generation

Abstract In this research an innovative energy-saving process using chemical absorption by a metal solid in a circulating fluidized bed has been proposed. To recirculate of all process heat, the reaction heat that accompanies absorption is successfully supplied through a heat pump to achieve thermal decomposition in a regenerator, leading to large energy saving of the process. Absorption and fluidization experiments were conducted to determine the process conditions and requirements of the proposed process. An energy balance of the proposed process was simulated using the experimental data by a commercial process simulator. The simulation results indicate that the proposed CO 2 separation process has large energy-saving potential as compared with conventional counterparts.