Design of a Commercial Scale Oxy-Coal Supercritical CO2 Power Cycle
- NETL
- Noblis
This presentation provides an overview of NETL’s analyses of the supercritical CO2 (SCO2) recompression Brayton cycle for application to commercial scale power plants with CO2 capture. This cycle has the potential to achieve over 50% efficiency due to the recuperation of heat from the SCO2 turbine exhaust, while the high SCO2 density may yield reductions in plant footprint and capital cost. Prior work has found that a circulating fluidized bed (CFB) with enhanced combustion air preheating would be a suitable indirect heat source for a SCO2 power cycle. This work investigates several options for efficiently integrating an oxy-fired CFB with an indirect SCO2 cycle, including thermal integration with the air separation unit, and utilization of combustor exhaust heat to thermally balance the low temperature recuperator. The sensitivity of plant performance to various cycle parameters is investigated, and the effect of design choices on the plant’s capital cost is discussed.
- Research Organization:
- National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)
- Sponsoring Organization:
- FE-22
- DOE Contract Number:
- DE-FE0025912
- OSTI ID:
- 1491089
- Report Number(s):
- DOE/NETL-2015/1733
- Resource Relation:
- Conference: International Pittsburgh Coal Conference Pittsburgh; PA 10/5/2015 - 10/8/2015
- Country of Publication:
- United States
- Language:
- English
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