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Relationships between Combustion Behavior in Air and the Chemical Structure of Bituminous Coal during Combustion Processes

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  • Shuxing Qiu

    (State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization, Panzhihua 617000, China
    Panzhihua Iron & Steel Research Institute, Panzhihua 617000, China
    College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China)

  • Ramana G. Reddy

    (Department of Metallurgical and Materials Engineering, The University of Alabama, Tuscaloosa, AL 35487, USA)

  • Xianyou Huang

    (State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization, Panzhihua 617000, China
    Panzhihua Iron & Steel Research Institute, Panzhihua 617000, China
    College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China)

  • Chen Yin

    (College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China)

  • Shengfu Zhang

    (College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China)

Abstract

The structural parameters of five bituminous coals were analyzed by using X-ray diffraction and attenuated total reflection–Fourier transform infrared spectroscopy. The combustion behavior of coal was investigated by using a thermogravimetric analyzer under air conditions. Furthermore, the relationships between combustion parameters and the coal structure were established. The results show that bituminous coals contain crystalline and amorphous carbon. The aromaticity, interlayer spacing, average stacking height, aliphatic chain length, and the hydrocarbon-generating potential varied with the different bituminous coals. The coal samples exhibited similar weight changes during the combustion process, and the combustion parameters increased with increments in heating rate. The maximum combustion rate and activation energy increased with declining interlayer spacing and hydrocarbon-generating potential and increasing aromaticity, average stacking height, and aliphatic chain length. The bituminous coal for the utilization of combustion should have high aromaticity, a degree of graphitization, crystalline, long aliphatic chain length, and weak hydrocarbon-generating potential.

Suggested Citation

  • Shuxing Qiu & Ramana G. Reddy & Xianyou Huang & Chen Yin & Shengfu Zhang, 2022. "Relationships between Combustion Behavior in Air and the Chemical Structure of Bituminous Coal during Combustion Processes," Energies, MDPI, vol. 15(14), pages 1-15, July.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:14:p:5154-:d:863871
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    References listed on IDEAS

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    1. Sonibare, Oluwadayo O. & Haeger, Tobias & Foley, Stephen F., 2010. "Structural characterization of Nigerian coals by X-ray diffraction, Raman and FTIR spectroscopy," Energy, Elsevier, vol. 35(12), pages 5347-5353.
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    1. Vadim Dorokhov & Geniy Kuznetsov & Galina Nyashina, 2022. "Combustion of Coal and Coal Slime in Steam-Air Environment and in Slurry Form," Energies, MDPI, vol. 15(24), pages 1-23, December.

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