Performance and Economic Analysis of 500 MWe Coal-Fired Power Plant with Post-Combustion CO2 Capture Process

In this study, performance and economic analysis of 500 MWe coal-fired power plant with CO2 capture process was performed. For this purpose, chemical absorption method which is commercially available and most suitable for thermal power plant was studied and a criteria for technical and economic assessment of power plants suggested by IEA Greenhouse Gas R&D Programme was used. And we performed the sensitivity analysis focused on regeneration energy which exceed half of the total capture energy. Based on MEA(Monoethanoleamine) as a main chemical solvent and 3.31 GJ/tonCO(2) regeneration energy in the stripper, net power efficiency was reduced from 41.0% (no capture) to 31.6%(with capture) and the cost of CO2 avoided was estimated 43.3 $/tonCO(2). And in case of 2.0 GJ/tonCO(2) regeneration energy, the cost of CO2 avoided was calculated as 36.7 $/tonCO(2).