Can CO2 Regeneration Heat Consumption Be Reduced by Using the Novel “Mass Concentration of Solvent Swing Regeneration (MCSR)” Technology?

To reduce CO₂ regeneration heat consumption in CO₂ capture process, a novel concept named "mass concentration of CO₂-rich solution swing regeneration (MSCR)" was put forward in this study. Experiments were executed to investigate the feasibility and energy reduction potential of MSCR by using MEA as absorbent. Results show that CO₂ regeneration performance can be improved greatly when MSCR was adopted. In addition, relatively high but appropriate mass concentration should be recommended to be selected for the initial CO₂ rich solution. And experimental results also prove that MCSR technology may be more viable for the bicarbonate-producing systems between the reaction of CO₂ and absorbent or for carbamate-producing systems with high CO₂ loading. Finally, evaluation of total regeneration heat consumption shows that the total CO₂ regeneration heat consumption can be reduced by at least about 25% for MSCR.