A comprehensive review on the hydrodynamics, mass transfer and chemical absorption of CO2 and modelling aspects of rotating packed bed

Abstract

CO2 levels are quickly rising over the world and have a significant impact on climate change. Post-combustion CO2 capture by chemical absorption is regarded as a widely accepted as well as an efficient technology for mitigating CO2 emissions from power plants especially fossil fuel-fired ones. Because of the kinetic limitations, high capital costs, low selectivity, and inferior energy efficiency, process intensification of equipment, material, and process development strategies are needed for carbon capture. Rotating Packed Beds (RPBs) have been identified as the most suitable equipment for enhanced post-combustion carbon capture. In the first part of the review paper, the recent developments on the process intensification of post-combustion CO2 capture using RPBs are updated and discussed. The hydrodynamics as well as the mass transfer characteristics of RPBs are discussed first. The applicability of different correlations reported for hydrodynamic and mass transfer characteristics was analysed. In the second part, the process modelling, computational fluid dynamics(CFD) simulation of single and multiphase flows in RPBs and techno-economic analysis of CO2 capture using RPBs are also reviewed to accelerate further research toward large-scale implementation.