Coal and biomass co-pyrolysis in a fluidized-bed reactor: Numerical assessment of fuel type and blending conditions

FUEL

卷:275

Article

Ismail, Tamer M.¹  Banks, S. W.²  Yang, Y.²  Yang, Haiping³  Chen, Yingquan³  Bridgwater, A. V.²  Ramzy, Khaled¹  Abd El-Salam, M.^2,4 

[1] Suez Canal Univ, Dept Mech Engn, Ismailia, Egypt

[2] Aston Univ, Enery & Bioprod Res Inst, Birmingham B4 7ET, W Midlands, England

[3] Huazhong Univ Sci & Technol, State Key Lab Coal Combust, 1037 Luoyu Rd, Wuhan 430074, Peoples R China

[4] Cairo Univ, Dept Basic Sci, Giza, Egypt

关键词: Co-pyrolysis;    Coal;    Biomass;    Mathematical model;   

DOI  :  10.1016/j.fuel.2020.118004

来源: Elsevier

【 摘 要 】

Co-pyrolysis is one of the most promising options for using coal and biomass because coal is low in hydrogen and biomass can supplement the hydrogen content to make a more valuable and reactive product gas. The mixture of coal and biomass is prepared, with the mass ratio of biomass varying between 0 and 100%. Due to limitations in experimental methods, the data points measured in these studies are coarse and therefore, insufficient for kinetic energy analysis and model comparison. Therefore, a mathematical model has been proposed to combine a study of the influence of experimental parameters with different materials to understand better the effect of these parameters on pyrolysis with the rigorous control of experimental conditions in terms of precision and repeatability. The advantages of mathematical modelling co-pyrolysis make it possible to design a reaction scheme capable of describing this phenomenon and extracting kinetic parameters, making it possible to compare fuels, which can be used for the simulation of this process in thermal power plants. The experimental analysis of measured co-pyrolysis data was taken from literature work to validate the proposed model. The numerical model results are in good agreement with the experimental data for co-pyrolysis. The most significant degree of synergetic effects on the product yields was observed at 600 degrees C and a biomass blending ratio of 70 wt%. Furthermore, the improvement of char reactivity also identifies the synergies in co-pyrolysis.

【 授权许可】

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