Pre-combustion decarbonisation in IGCC: Gas turbine operating window at variable carbon capture ratios

This paper presents the results of gas turbine simulations that were conducted to compare state-of-the-art and re-designed gas turbines operated on syngas, in Integrated Gasification Combined Cycles (IGCC) with pre-combustion CO2 capture. The effects of the desired carbon capture ratio on efficiency and power output were evaluated, for retrofit applications both with and without capacity building. The results indicate that re-designed gas turbines for syngas applications can achieve higher efficiencies than natural gas turbines that were modified for syngas applications.