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A Novel Method of Kinetic Analysis and Its Application to Pulverized Coal Combustion under Different Oxygen Concentrations

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  • Xiang Gou

    (School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China)

  • Qiyan Zhang

    (School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China)

  • Yingfan Liu

    (School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China
    Comprehensive Management Department, CNOOC Energy Conservation & Environmental Protection Service Co., Ltd., Tianjin 300452, China)

  • Zifang Wang

    (School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China)

  • Mulin Zou

    (International Department, RDFZ Xishan School, Beijing 100193, China)

  • Xuan Zhao

    (School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China)

Abstract

Currently, many efforts have been made to improve the approach to build kinetic models. Based on mathematical algorithms, a novel method (named DIM method) of kinetic analysis was introduced in detail. A formula combining differential and integral was deduced and applied to the determination of the mechanism function f ( α ). Subsequently, multivariable linear regression was conducted to simultaneously obtain the apparent activation energy E , pre-exponential factor A , and oxygen concentration exponent n . In the application of pulverized coal combustion under different oxygen concentrations (3%, 5%, 10%, 15%, and 21%), E , A , and n were calculated as 258,164 J/mol, 6.660 × 10 17 s −1 , and 3.326, respectively, and the mechanism function f ( α ) was determined as the Avrami-Erofeev equation. A validation was performed under a 7% oxygen concentration, which shows that the DIM method has a higher accuracy. This work can provide a reference for the study of kinetic analysis.

Suggested Citation

  • Xiang Gou & Qiyan Zhang & Yingfan Liu & Zifang Wang & Mulin Zou & Xuan Zhao, 2018. "A Novel Method of Kinetic Analysis and Its Application to Pulverized Coal Combustion under Different Oxygen Concentrations," Energies, MDPI, vol. 11(7), pages 1-15, July.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:7:p:1799-:d:156995
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    References listed on IDEAS

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    Cited by:

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