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COMBUSTION RATE FOR CHAR WITH FRACTAL PORE CHARACTERISTICS

机译:具有分形孔特征的焦炭燃烧率

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摘要

A char combustion model was derived by assuming constant intrinsic activation energy for the different chars. The char combustion rates are affected by various diffusion processes within the different char pores. The fractal pore diffusion effects were characterized by three pore structure parameters (porosity, specific surface area, and fractal dimension) and the mean particle diameter. Three-dimensional numerical results for various char particles burned in drop tube furnaces obtained using the model compare well with experimental results to verify the model. The comparisons show that the model has good accuracy for a wide range of char, from lignite to anthracite.
机译:通过假设不同的炭具有恒定的固有活化能,得出炭燃烧模型。炭燃烧速率受不同炭孔中各种扩散过程的影响。分形孔隙扩散效应的特征在于三个孔隙结构参数(孔隙度,比表面积和分形维数)和平均粒径。使用该模型获得的在滴管炉中燃烧的各种炭颗粒的三维数值结果与实验结果进行了很好的比较,从而验证了该模型。比较表明,该模型对于从褐煤到无烟煤的各种炭都具有良好的精度。

著录项

  • 来源
    《Combustion Science and Technology》 |2013年第12期|1624-1643|共20页
  • 作者单位

    Department of Thermal Engineering, Tsinghua University, Beijing, China,State Nuclear Power Software Development Center, Beijing, China;

    Department of Thermal Engineering, Tsinghua University, Beijing, China;

    Department of Thermal Engineering, Tsinghua University,Beijing 100084, China;

    Research Laboratory, IHI Corporation, Yokohama, Japan;

    Research Laboratory, IHI Corporation, Yokohama, Japan;

    Research Laboratory, IHI Corporation, Yokohama, Japan;

    Research Laboratory, IHI Corporation, Yokohama, Japan;

    IHI Corporation, Tokyo, Japan;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Char; Combustion; Fractal; Pores;

    机译:字符燃烧;分形毛孔;

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