Thermal Power Generation System and Method for Generating Thermal Electric Power

摘要

A thermal power generation system includes a combustor burning oxygen and fuel with supercritical CO2, a turbine driven by the supercritical CO2 and water vapor fed from the combustor, a low-pressure supercritical CO2 storage storing low-pressure supercritical CO2 from the turbine, a compressor compressing the low-pressure supercritical CO2, a high-pressure supercritical CO2 storage storing high-pressure supercritical CO2 from the compressor, and a high-pressure supercritical CO2 feeder supplying between the high-pressure supercritical CO2 storage and the combustor, in which the high-pressure supercritical CO2 feeder supplies the high-pressure supercritical CO2 to the combustor at a constant pressure. Thus, the thermal power generation system can perform adjustment of an electric power supply required to use unstable renewable energy sources such as solar and wind power, can achieve high efficiency power generation with high temperature working fluid, and can reduce emissions of environmental load substances such as NOx and CO2.

主权项

1. A thermal power generation system which uses supercritical carbon dioxide as a working fluid, the thermal power generation system comprising:
a combustor which burns oxygen and fuel with the supercritical carbon dioxide; a supercritical CO2 turbine which is driven by the supercritical carbon dioxide and water vapor supplied from the combustor; a supercritical CO2 turbine generator which is driven by the supercritical CO2 turbine; a low pressure CO2 storage which stores low pressure carbon dioxide emitted from the supercritical CO2 turbine; a supercritical CO2 compressor which compresses the low pressure carbon dioxide; a high pressure supercritical CO2 storage which stores high pressure supercritical carbon dioxide obtained by having the supercritical CO2 compressor compress the low pressure carbon dioxide; and a high pressure supercritical CO2 feeder which supplies the high pressure supercritical carbon dioxide in the high pressure supercritical CO2 storage to the combustor, wherein the high pressure supercritical CO2 feeder supplies the high pressure supercritical carbon dioxide to the combustor at a constant pressure.