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Simulation of Power Generation System with Co-Combustion of Coal and Torrefied Biomass by Flue Gas

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  • Chunshuo Song

    (Institute of Thermal Science and Technology, Shandong University, Jinan 250061, China)

  • Ning Guo

    (Institute of Thermal Science and Technology, Shandong University, Jinan 250061, China)

  • Fengying Ren

    (Institute of Thermal Science and Technology, Shandong University, Jinan 250061, China)

  • Xiaohan Ren

    (Institute of Thermal Science and Technology, Shandong University, Jinan 250061, China)

Abstract

At present, there is a global rise in electricity consumption, leading to an accelerated depletion of natural resources due to the reliance on fossil fuels to fulfill this energy demand. Consequently, there exists a worldwide emphasis on enhancing the proportion of renewable energy sources in electricity generation. Biomass, as a renewable energy source, presents a viable alternative to certain fossil energy sources for combustion in electricity generation. This study focuses on a 660 MW coal-fired power plant as the subject of investigation, employing Aspen Plus simulation software (V11) to replicate the operational dynamics of the plant. A model of the direct mixed combustion biomass system within the coal-fired boiler is constructed, and its accuracy is validated against operational data obtained from the power plant. Moreover, a model elucidating the direct co-combustion of biomass in a coal-fired boiler, augmented by flue gas recirculation, was developed through the integration of biomass pre-treatment and flue gas recirculation technologies. This study explores the impacts of varying biomass blending ratios and flue gas recirculation on parameters, including flue gas volume, power generation efficiency, boiler performance, water vapor content, and emissions of pollutants. These findings indicate an inverse relationship between the mixing ratio and various performance metrics as follows: power generation, boiler efficiency, as well as NO X and SO 2 content, with larger mixing ratios resulting in diminished values. Furthermore, the incorporation of flue gas recirculation was observed to mitigate furnace temperatures and suppress NO X emissions.

Suggested Citation

  • Chunshuo Song & Ning Guo & Fengying Ren & Xiaohan Ren, 2024. "Simulation of Power Generation System with Co-Combustion of Coal and Torrefied Biomass by Flue Gas," Energies, MDPI, vol. 17(12), pages 1-20, June.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:12:p:3047-:d:1418781
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    References listed on IDEAS

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    1. Kopczyński, Marcin & Lasek, Janusz A. & Iluk, Andrzej & Zuwała, Jarosław, 2017. "The co-combustion of hard coal with raw and torrefied biomasses (willow (Salix viminalis), olive oil residue and waste wood from furniture manufacturing)," Energy, Elsevier, vol. 140(P1), pages 1316-1325.
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