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Volume 26 Issue 10
Oct.  2019
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文章导航 >  矿物冶金与材料学报（英文）  > 2019  >  26(10): 1247-1257
Min-min Sun, Jian-liang Zhang, Ke-jiang Li, Ke Guo, Zi-ming Wang,  and Chun-he Jiang, Gasification kinetics of bulk coke in the CO2/CO/H2/H2O/N2 system simulating the atmosphere in the industrial blast furnace, Int. J. Miner. Metall. Mater., 26(2019), No. 10, pp. 1247-1257. https://doi.org/10.1007/s12613-019-1846-1
Cite this article as:
Min-min Sun, Jian-liang Zhang, Ke-jiang Li, Ke Guo, Zi-ming Wang,  and Chun-he Jiang, Gasification kinetics of bulk coke in the CO2/CO/H2/H2O/N2 system simulating the atmosphere in the industrial blast furnace, Int. J. Miner. Metall. Mater., 26(2019), No. 10, pp. 1247-1257. https://doi.org/10.1007/s12613-019-1846-1
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Gasification kinetics of bulk coke in the CO2/CO/H2/H2O/N2 system simulating the atmosphere in the industrial blast furnace

  • School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China

  • School of Chemical Engineering, The University of Queensland, St Lucia, QLD 4072, Australia

  • Sinosplendor Engineering & Technology Co., Ltd., Tianjin 300452, China

  • 通讯作者:

    Ke-jiang Li    E-mail: likejiang@ustb.edu.cn

  • The gasification characteristics and gasification kinetics of coke in complex CO2/CO/H2/H2O/N2 systems similar to the gas system of industrial blast furnace (BF) were studied by the method of isothermal thermogravimetric analysis. The experimental gas compositions and the corresponding temperature were chosen according to data reported for industrial BFs. The gasification behavior of coke was described by the Random Pore Model (RPM), Volumetric Model (VM), and Grain Model (GM). Results showed that the gas composition of the coke gasification zone in BF changes slightly and that the temperature is the most important factor affecting coke gasification. The lower activation energy of coke samples (Coke Reaction Index (CRI) > 50) is due to the high Fe2O3 in the ash, lower degree of graphitization, and larger pore structure. In addition, the choice of kinetic model does not differ substantially in describing the gasification mechanism of coke in a BF.
    • Research Article

    Gasification kinetics of bulk coke in the CO2/CO/H2/H2O/N2 system simulating the atmosphere in the industrial blast furnace

    + Author Affiliations
      Abstract
    • The gasification characteristics and gasification kinetics of coke in complex CO2/CO/H2/H2O/N2 systems similar to the gas system of industrial blast furnace (BF) were studied by the method of isothermal thermogravimetric analysis. The experimental gas compositions and the corresponding temperature were chosen according to data reported for industrial BFs. The gasification behavior of coke was described by the Random Pore Model (RPM), Volumetric Model (VM), and Grain Model (GM). Results showed that the gas composition of the coke gasification zone in BF changes slightly and that the temperature is the most important factor affecting coke gasification. The lower activation energy of coke samples (Coke Reaction Index (CRI) > 50) is due to the high Fe2O3 in the ash, lower degree of graphitization, and larger pore structure. In addition, the choice of kinetic model does not differ substantially in describing the gasification mechanism of coke in a BF.
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