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Experimental study on characteristic temperature of coal spontaneous combustion

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Abstract

Using the coal spontaneous combustion experiment platform as the experimental testing method, based on Dafosi (defined as DFS) coal sample and Dongtan (defined as DT) coal sample, the characteristic temperature of coal spontaneous combustion was found out through a series of parameters such as heating rate, oxygen consumption rate, gas generation rate, single gas and composite gas index, and the corresponding relationship between characteristic temperature and each parameter was analyzed, the corresponding relationship between coal temperature and relevant parameters of gas generation is established, and the characteristic temperature of coal spontaneous combustion is determined as T1 = 35 °C, T2 = 55 °C, T3 = 75 °C, T4 = 100 °C, T5 = 145 °C, T6 = 190 °C, T7 = 230 °C, T8 = 310 °C.

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Acknowledgements

This work was supported by National Natural Science Foundation of China (Grant No. 52174200), National Key R&D Projects (Programs 2016YFC0801802 and 2018YFC0808201) and Gansu Youth Science and Technology Fund (23JRRA833).

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Authors and Affiliations

  1. College of Safety Science and Engineering, Xi’an University of Science and Technology, Xi’an, 710054, Shaanxi, China

    Yong Yang, Jinbiao Fei, Zhenmin Luo & Hu Wen

  2. College of Petroleum and Chemical Engineering, Lanzhou University of Technology, Lanzhou, 730050, China

    Hu Wang

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  1. Yong Yang
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  2. Jinbiao Fei
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  3. Zhenmin Luo
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  4. Hu Wen
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Correspondence to Yong Yang or Zhenmin Luo.

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Yang, Y., Fei, J., Luo, Z. et al. Experimental study on characteristic temperature of coal spontaneous combustion. J Therm Anal Calorim 148, 10011–10019 (2023). https://doi.org/10.1007/s10973-023-12365-0

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