Main content area

Techno-economic analysis of oxy-fuel IGCC power plants using integrated intermittent chemical looping air separation

Shi, Bin, Xu, Wen, Wu, Wei, Kuo, Po-Chih
Energy conversion and management 2019 v.195 pp. 290-301
air, byproducts, carbon, carbon dioxide, carbon dioxide production, carbon sequestration, coal, combustion, electricity, energy costs, greenhouse gas emissions, market prices, power plants
Three oxy-fuel IGCC power plants using different air separation technologies and carbon compression and compression (CCP) are developed to near-zero CO2 emission power systems. If capturing CO2 is treated as a byproduct, Design 2 by an integration of IGCC and natural gas-fueled integrated intermittent chemical looping air separation (NG-IICLAS) may have a promising economic potential. Through the techno-economic assessment of Design 2, its internal rate of return (IRR) by 17.99% is higher than a chemical looping combustion (CLC)-based IGCC power plant connecting carbon capture and storage (CCS) with IRR = 12.5%, its levelized cost of electricity (LCOE) by 69.92 €/MWh is close to the LCOE of supercritical coal-fired power plant in 2015, and its CO2 production cost by 12.35 €/ton is also close to the market price for CO2 in 2011. It is successfully verified that the investing in Design 2 is superior to other designs.