Investigating the dynamic response of CO₂ chemical absorption process in enhanced- O2 coal power plant with post-combustion CO₂ capture

Studies have been carried out to show that there could be benefits in employing a hybrid of the post combustion capture and oxyfuel processes. The former is suited for retrofit purposes but involves an energy intensive solvent regeneration process. The oxyfuel process would result in high partial pressures of CO₂ in the flue gas making separation easier. However, the Air Separation Unit is also energy intensive and significant modifications would have to be made on the power generation process. An enhanced- O2 coal power plant with post combustion CO₂ capture would produce flue gas with reduced mass flow and higher CO₂ partial pressures. The dynamic response of the downstream CO₂ capture plant was studied in this paper.