Performance and Cost Assessment of a Coal Gasification Power Plant Integrated with a Direct-Fired sCO2 Brayton Cycle
- National Energy Technology Lab. (NETL), Albany, OR (United States)
- KeyLogic, Morgantown, WV (United States)
- Noblis, Reston, VA (United States)
The objective of this study is to develop a cost and performance baseline for a coal syngas-fueled, direct-fired supercritical carbon dioxide (sCO2) power plant using coal gasification, and to analyze the sensitivity of its cost and performance to variations in operating parameter and cost assumptions. The study results yield a sCO2 baseline plant efficiency of 37.7% (HHV), with 97.6% carbon capture at 99.8% purity, much higher than the reference integrated gasification combined cycle (IGCC) plant using the same Shell gasifier (31.2% efficiency, 90% carbon capture). The economic analysis estimates a cost of electricity (COE) of $137/MWh for the mature, commercial-scale sCO2 plant (without CO2 transport and storage costs), yielding a 10% reduction in COE from the reference IGCC case. These results demonstrate the significant potential of direct sCO2 power cycles for achieving DOE’s transformational power generation goals for coal-fueled power plants with carbon capture and storage.
- Research Organization:
- National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV, and Albany, OR (United States)
- Sponsoring Organization:
- USDOE Office of Fossil Energy (FE), Office of Clean Energy Systems (FE-22)
- DOE Contract Number:
- DE-FE0025912
- OSTI ID:
- 1491109
- Report Number(s):
- NETL-PUB-21435
- Country of Publication:
- United States
- Language:
- English
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