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The Kinetics of Semi-Coke CO 2 Gasification Based on Pore Fractal Growth

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  • Junzhe Wang

    (College of Chemistry and Chemical Engineering, Xi’an University of Science and Technology, Xi’an 710054, China
    Shaanxi Coal Industry New Energy Technology Co., Ltd., Xi’an 710054, China)

  • Anning Zhou

    (College of Chemistry and Chemical Engineering, Xi’an University of Science and Technology, Xi’an 710054, China
    Key Laboratory of Coal Resources Exploration and Comprehensive Utilization, Ministry of Natural, Xi’an 710021, China)

  • Zongxing Song

    (College of Chemistry and Chemical Engineering, Xi’an University of Science and Technology, Xi’an 710054, China)

  • Guoyang Liu

    (College of Chemistry and Chemical Engineering, Xi’an University of Science and Technology, Xi’an 710054, China)

  • Sicheng Qin

    (Shaanxi Coal Industry New Energy Technology Co., Ltd., Xi’an 710054, China)

  • Jing Wang

    (Shaanxi Coal Industry New Energy Technology Co., Ltd., Xi’an 710054, China)

Abstract

The gasification kinetics of semi-coke are an important research topic in the gasification process of semi-coke. The evolution of the pore structure is one of the most important factors affecting the gasification rate of semi-coke. In this paper, the pore fractal growth model was established based on the principle of pore fractal growth and the Sierpinski sponge structure. Three kinds of semi-coke raw materials were used to prepare porous carbon with different degrees of gasification. Combined with the TG curves of raw materials, the gasification kinetics based on the fractal model were verified. The curves of the gasification reaction rate and the specific surface area as a function of carbon conversion were consistent with the random pore model and experimental data, which verified the feasibility of the model. The pore fractal dynamic model could predict the change in the pore structure with carbon conversion during semi-coke gasification, so as to reveal the kinetic law of carbon gasification.

Suggested Citation

  • Junzhe Wang & Anning Zhou & Zongxing Song & Guoyang Liu & Sicheng Qin & Jing Wang, 2024. "The Kinetics of Semi-Coke CO 2 Gasification Based on Pore Fractal Growth," Energies, MDPI, vol. 17(2), pages 1-15, January.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:2:p:483-:d:1322036
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    References listed on IDEAS

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    1. Ahmed, I.I. & Gupta, A.K., 2011. "Kinetics of woodchips char gasification with steam and carbon dioxide," Applied Energy, Elsevier, vol. 88(5), pages 1613-1619, May.
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