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Advanced simulation of a 750 t/d municipal solid waste grate boiler to better accommodate feedstock changes due to waste classification

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  • Gu, Tianbao
  • Ma, Wenchao
  • Berning, Torsten
  • Guo, Zhenning
  • Andersson, Ronnie
  • Yin, Chungen

Abstract

To better accommodate changes in municipal solid waste (MSW) properties due to waste classification, advanced computational fluid dynamics (CFD) simulations are carried out for a 750 t/d MSW moving-grate boiler. A moving-grate bed model is developed and iteratively coupled to the freeboard simulation which is performed in Ansys Fluent. The model is first validated by the measurement data for the daily operation case incinerating current feedstock. Then, the model is deployed to investigate the impacts of feedstock change and adjust boiler operation for better accommodating the new MSW. The results indicate incineration of the new MSW leads to irrational utilization of oxygen, non-uniform temperature distribution and low mixing, while maintaining current operation conditions. Subsequently, adjustments of air supply and thermal input are proposed and conducted by the model, which address the potential issues and benefit boiler operation and energy recycling. Finally, the uniformity of velocity and turbulent kinetic energy which indicates mixing, are compared for different cases. The latter is increased by 51.39% and 81.04% after the adjustments of air supply and thermal input. The investigation provides solid references for incinerating new MSW in the current boiler.

Suggested Citation

  • Gu, Tianbao & Ma, Wenchao & Berning, Torsten & Guo, Zhenning & Andersson, Ronnie & Yin, Chungen, 2022. "Advanced simulation of a 750 t/d municipal solid waste grate boiler to better accommodate feedstock changes due to waste classification," Energy, Elsevier, vol. 254(PB).
    • Handle: RePEc:eee:energy:v:254:y:2022:i:pb:s0360544222012415
    DOI: 10.1016/j.energy.2022.124338
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    References listed on IDEAS

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    Cited by:

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    3. Yongqi Liang & Jian Tang & Heng Xia & Loai Aljerf & Bingyin Gao & Mulugeta Legesse Akele, 2023. "Three-Dimensional Numerical Modeling and Analysis for the Municipal Solid-Waste Incineration of the Grate Furnace for Particulate-Matter Generation," Sustainability, MDPI, vol. 15(16), pages 1-22, August.
    4. Liu, Yuhao & Li, Aijun & Guo, Guangzhao & Zhang, Junwei & Ren, Yang & Dong, Lu & Gong, Lifang & Hu, Hongyun & Yao, Hong & Naruse, Ichiro, 2024. "Comparative life cycle assessment of organic industrial solid waste co-disposal in a MSW incineration plant," Energy, Elsevier, vol. 305(C).
    5. de Sousa, Moisés Abreu & Cancino, Leonel R. & Deschamps, Isadora Schramm & Bazzo, Edson, 2024. "CRFD modeling of high-temperature reciprocating grate degradation in a 15 t/h eucalyptus wood chip boiler," Renewable Energy, Elsevier, vol. 230(C).
    6. Kalisz, Sylwester & Wejkowski, Robert & Maj, Izabella & Garbacz, Przemysław, 2023. "A novel approach to the dry desulfurization process by means of sodium bicarbonate: A full-scale study on SO2 emission and geochemistry of fly ash," Energy, Elsevier, vol. 279(C).
    7. Ma, Teng & Zhou, Hongquan & Xu, Fang & Chen, Dezhen & Qian, Kezhen & Yin, Lijie, 2024. "Numerical simulation and intelligent prediction of a 500 t/d municipal solid waste incinerator," Energy, Elsevier, vol. 312(C).
    8. Chen Yang & Jingxian Kong & Xinji Chen & Zhijiang Jin & Jinyuan Qian, 2024. "Research on the Arrangement Scheme of Spirally Twisted Tape Inserts in a Grate Furnace," Energies, MDPI, vol. 17(21), pages 1-23, October.

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