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Three-dimensional simulation of biomass gasification in a full-loop pilot-scale dual fluidized bed with complex geometric structure

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  • Kong, Dali
  • Wang, Shuai
  • Luo, Kun
  • Hu, Chenshu
  • Li, Debo
  • Fan, Jianren

Abstract

Based on the Eulerian-Lagrangian framework, a reactive multi-phase particle-in-cell (MP-PIC) method is used to simulate biomass gasification in a three-dimensional pilot-scale dual fluidized bed (DFB) with complex geometric structure. After model validation, the optimal parameters for the simulation are derived via the independence tests. Thermochemical behaviors of bed materials and biomass particles are explored and the effects of temperature, steam-to-biomass ratio, and equivalence ratio on gasification performance are unveiled. The results show that the tendency of gas and solid temperature is opposite in the gasifier and combustor. The DFB can effectively control temperature, showing an excellent circulating and heat transfer feature. The pressure gradient distribution is highly related to the solid holdup distribution. Higher temperature and steam-to-biomass ratio increase lower heating value (LHV) and combustible gas concentration, resulting in the enhancement of gasification performance. Higher equivalence ratio decreases the LHV and combustible gas concentration, giving rise to a negative influence on the gasification performance.

Suggested Citation

  • Kong, Dali & Wang, Shuai & Luo, Kun & Hu, Chenshu & Li, Debo & Fan, Jianren, 2020. "Three-dimensional simulation of biomass gasification in a full-loop pilot-scale dual fluidized bed with complex geometric structure," Renewable Energy, Elsevier, vol. 157(C), pages 466-481.
    • Handle: RePEc:eee:renene:v:157:y:2020:i:c:p:466-481
    DOI: 10.1016/j.renene.2020.04.130
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    References listed on IDEAS

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    1. Liu, Hui & Cattolica, Robert J. & Seiser, Reinhard & Liao, Chang-hsien, 2015. "Three-dimensional full-loop simulation of a dual fluidized-bed biomass gasifier," Applied Energy, Elsevier, vol. 160(C), pages 489-501.
    2. Kim, Young Doo & Yang, Chang Won & Kim, Beom Jong & Kim, Kwang Su & Lee, Jeung Woo & Moon, Ji Hong & Yang, Won & Yu, Tae U & Lee, Uen Do, 2013. "Air-blown gasification of woody biomass in a bubbling fluidized bed gasifier," Applied Energy, Elsevier, vol. 112(C), pages 414-420.
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    1. Diba, Mst Farhana & Karim, Md Rezwanul & Naser, Jamal, 2022. "CFD modelling of coal gasification in a fluidized bed with the effects of calcination under different operating conditions," Energy, Elsevier, vol. 239(PC).
    2. Fan, Feihu & Zheng, Min & Yang, Shiliang & Wang, Hua, 2021. "Numerical study of fluid dynamics and heat transfer property of dual fluidized bed gasifier," Energy, Elsevier, vol. 234(C).
    3. Dong, Ruihan & Yang, Shiliang & Hu, Jianhang & Chen, Fangjun & Bao, Guirong & Wang, Hua, 2022. "CFD investigation of the in-situ gasification process of biomass in the chemical looping combustion system," Renewable Energy, Elsevier, vol. 185(C), pages 1245-1260.
    4. Lin, Junjie & Sun, Liyan & Luo, Kun & Kong, Dali & Fan, Jianren, 2022. "Three-dimensional simulation of a gas-fueled chemical looping combustion system with dual circulating fluidized bed reactors," Energy, Elsevier, vol. 246(C).
    5. Wan, Zhanghao & Hu, Jianhang & Qi, Xianjin, 2021. "Numerical analysis of hydrodynamics and thermochemical property of biomass gasification in a pilot-scale circulating fluidized bed," Energy, Elsevier, vol. 225(C).
    6. Yang Wang & Xiangyu Chen & Liping Xu & Mingwei Ma & Xiaole Huang & Feng Han & Yong Zhou & Chen Du & Yaodong Da & Lei Deng, 2023. "Computational Particle Fluid Dynamics Simulation on Combustion Characteristics of Blended Fuels of Coal, Biomass, and Oil Sludge in a 130 t h −1 Circulating Fluidized Bed Boiler," Energies, MDPI, vol. 17(1), pages 1-17, December.
    7. Liyan Sun & Junjie Lin & Dali Kong & Kun Luo & Jianren Fan, 2022. "Numerical Simulation of a 10 kW Gas-Fueled Chemical Looping Combustion Unit," Energies, MDPI, vol. 15(6), pages 1-11, March.

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