EFFICIENT CO2 CAPTURE THROUGH A COMBINED STEAM AND CO2 GAS-TURBINE CYCLE

A major issue in defining CO2 mitigation strategies is the dominant role of the fossil fuels which will certainly last for at least another fifty years. In the long term the total capture and disposal of CO2 is to be considered as the ultimate solution and different routes for total CO2 capture are now considered. The present paper proposes the use of a highly efficient combined steam/CO2 gas turbine cycle for an economically viable CO2 capture. The proposed cycle is close to the STIG and HAT combined cycles. The cycle behaviour is analysed and the main technological issues are assessed. A project for the proof of concept of the cycle has been defined and submitted to the European Communities (Joule program).