Performance Baseline for Direct-Fired sCO2 Cycles
- NETL
- Noblis, Inc.
NETL has conducted an evaluation of the performance and emissions for a direct coal-fired supercritical CO2 (sCO2) power plant, which has recently received interest as a potentially lower-cost, fossil-fuelled power source with inherent amenability to carbon capture. This study describes a baseline coal-fired cycle configuration, where coal is first gasified and cleaned in order to avoid introducing sulfur and particulate matter into the sCO2 cycle, with the sCO2 cycle’s oxy-combustor operating on syngas. The baseline sCO2 plant design yields a net plant thermal efficiency of 37.7% (HHV), with 98.1% CO2 capture at 99.4% purity. This compares favorably to the reference IGCC plant, which has a 31.2% net HHV thermal efficiency, and 90.1% CO2 capture rate at 99.99% purity. The sensitivity of the sCO2 plant’s performance to its process variables is discussed, as well as their effect on plant operability and cost surrogate variables.
- Research Organization:
- National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV, and Albany, OR (United States)
- Sponsoring Organization:
- (FE-22) - FE-22
- DOE Contract Number:
- FE0025912
- OSTI ID:
- 1491103
- Report Number(s):
- NETL-PUB-20257
- Country of Publication:
- United States
- Language:
- English
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