ABSTRACT
Gas turbine combined cycle is the cleanest fossil fuel-fired electric power generation technology from a carbon dioxide emissions perspective in terms of tons per megawatt-hour of generation. Even so, a large combined cycle power plant stack pumps thousands of tons of CO2 into the atmosphere every year. The readily available remedy is post-combustion capture of CO2 from the heat recovery steam generator (HRSG) stack gas. Due to the high efficiency of advanced class gas turbine combined cycles and their low capex, this can be a cost-effective option. This chapter provides the basics of post-combustion carbon capture in a gas turbine combined cycle framework utilizing an amine-based chemical absorption technology. Performance and cost ramifications are illustrated using a numerical example.
