Optimal Design Technologies for Integration of Combined Cycle Gas Turbine Power Plant with CO₂ Capture

Abstract

This paper presents a novel design method for optimal integration of Combined Cycle Gas Turbine (CCGT) power plant with CO2 capture. Different design strategies have been investigated to improve the efficiency of the CCGT power plant, including supplementary firing, steam cycle regeneration, gas cycle regeneration and gas cycle intercooling. Finally, an amine-based post-combustion carbon capture process has been built to capture CO2 at the exit of the HRSG of the CCGT power plant. The case study shows that, improving the efficiency of CCGT power plant before the integration of carbon capture process will significantly reduce the efficiency penalty caused by integrating carbon capture units into the power plant.