Techno-Economic Analysis of an Integrated Gasification Combined Cycle (IGCC) Plant with Carbon Capture Storage

Abstract

Although the efficiency and energy contribution of renewable energy are rapidly growing, coal is still an important fuel to meet the global energy demand. The integrated gasification combined cycle (IGCC), which is one of the coal power plants, has high efficiency and minimum cost penalties and has a high potential for further technological improvements. In this study, a technoeconomic analysis of the entire syngas process including carbon capture unit was conducted for a 500 MW-class IGCC with Shell gasifier using a sub-bituminous coal. Comparative performance evaluation of two different types of sub-bituminous coals (Montana and Wyoming)) was conducted. The performance including overall plant efficiency was evaluated. And the cost of electricity (COE) including CO2 transport and storage costs by geological location was estimated. The higher overall plant efficiency of 31.23% (HHV basis) could be achieved by using the Montana coal than Wyoming coal, 30.57%. However, the lower cost of electricity of 88.51 $ per net MWh was estimated from the Wyoming coal than Montana coal, 96.54 $ per net MWh.