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- W4313567524 endingPage "126598" @default.
- W4313567524 startingPage "126598" @default.
- W4313567524 abstract "Gasification process is a promising technology for efficient and clean utilization of solid fuels that has been attracting increasing attention. This paper proposes a high-efficiency coal-fired power generation system enabled by chemical recuperative supercritical water coal gasification. The main feature is that the reaction heat of gasification process is supplied by the high-temperature flue gas generated by the gas turbine, which can be achieved by adjusting the pressure ratio. Since coal can be converted into clean syngas with supercritical water at 600–700 °C without the oxidation of part of the fuel to provide reaction heat, the exergy destruction of gasification process is decreased dramatically and a small amount of chemical energy of coal is converted into thermal energy. The results showed that in the proposed system and reference system, the net power generation efficiencies are 53.8% and 48.9%, respectively; and the corresponding exergy efficiencies are 52.5% and 47.7%, respectively. It is observed that in the proposed system, the net power generation and exergy efficiencies increased by 4.9 and 4.8% points, respectively. Additionally, the mechanism of exergy destruction reduction is revealed by the graphical exergy analysis, and the comprehensive cascade utilization of chemical and thermal energy is realized." @default.
- W4313567524 created "2023-01-06" @default.
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- W4313567524 date "2023-03-01" @default.
- W4313567524 modified "2023-10-05" @default.
- W4313567524 title "Proposal and investigation of a high-efficiency coal-fired power generation system enabled by chemical recuperative supercritical water coal gasification" @default.
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- W4313567524 doi "https://doi.org/10.1016/j.energy.2022.126598" @default.
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