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Volume 26 Issue 7
Jul.  2019
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文章导航 >  矿物冶金与材料学报（英文）  > 2019  >  26(7): 811-821
Dong-wen Xiang, Feng-man Shen, Jia-long Yang, Xin Jiang, Hai-yan Zheng, Qiang-jian Gao,  and Jia-xin Li, Combustion characteristics of unburned pulverized coal and its reaction kinetics with CO2, Int. J. Miner. Metall. Mater., 26(2019), No. 7, pp. 811-821. https://doi.org/10.1007/s12613-019-1791-z
Cite this article as:
Dong-wen Xiang, Feng-man Shen, Jia-long Yang, Xin Jiang, Hai-yan Zheng, Qiang-jian Gao,  and Jia-xin Li, Combustion characteristics of unburned pulverized coal and its reaction kinetics with CO2, Int. J. Miner. Metall. Mater., 26(2019), No. 7, pp. 811-821. https://doi.org/10.1007/s12613-019-1791-z
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研究论文

Combustion characteristics of unburned pulverized coal and its reaction kinetics with CO2

  • School of Metallurgy, Northeastern University, Shenyang 110819, China

  • School of Metallurgical Engineering, Anhui University of Technology, Ma'anshan 243002, China

  • 通讯作者:

    Xin Jiang    E-mail: jiangx@smm.neu.edu.cn

  • The combustion characteristics of two kinds of unburned pulverized coal (UPC) made from bituminous coal and anthracite were investigated by thermogravimetric analysis under air. The reaction kinetics mechanisms between UPC and CO2 in an isothermal experiment in the temperature range 1000-1100℃ were investigated. The combustion performance of unburned pulverized coal made from bituminous coal (BUPC) was better than that of unburned pulverized coal made from anthracite (AUPC). The combustion characteristic indexes (S) of BUPC and AUPC are 0.47×10-6 and 0.34×10-6%2·min-2·℃-3, respectively, and the combustion reaction apparent activation energies are 91.94 and 102.63 kJ·mol-1, respectively. The reaction mechanism of BUPC with CO2 is random nucleation and growth, and the apparent activation energy is 96.24 kJ·mol-1. By contrast, the reaction mechanism of AUPC with CO2 follows the shrinkage spherical function model and the apparent activation energy is 133.55 kJ·mol-1.
    • Research Article

    Combustion characteristics of unburned pulverized coal and its reaction kinetics with CO2

    + Author Affiliations
      Abstract
    • The combustion characteristics of two kinds of unburned pulverized coal (UPC) made from bituminous coal and anthracite were investigated by thermogravimetric analysis under air. The reaction kinetics mechanisms between UPC and CO2 in an isothermal experiment in the temperature range 1000-1100℃ were investigated. The combustion performance of unburned pulverized coal made from bituminous coal (BUPC) was better than that of unburned pulverized coal made from anthracite (AUPC). The combustion characteristic indexes (S) of BUPC and AUPC are 0.47×10-6 and 0.34×10-6%2·min-2·℃-3, respectively, and the combustion reaction apparent activation energies are 91.94 and 102.63 kJ·mol-1, respectively. The reaction mechanism of BUPC with CO2 is random nucleation and growth, and the apparent activation energy is 96.24 kJ·mol-1. By contrast, the reaction mechanism of AUPC with CO2 follows the shrinkage spherical function model and the apparent activation energy is 133.55 kJ·mol-1.
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