IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v13y2020i8p1969-d346262.html
   My bibliography  Save this article

Study on the Effect of Extraneous Moisture on the Spontaneous Combustion of Coal and Its Mechanism of Action

Author

Listed:
  • Yuguo Wu

    (College of Safety and Emergency Management Engineering, Taiyuan University of Technology, Taiyuan 030024, China
    Shanxi Engineering Research Center for Mine Ventilation and Fire Prevention, Taiyuan 030024, China)

  • Yulong Zhang

    (College of Safety and Emergency Management Engineering, Taiyuan University of Technology, Taiyuan 030024, China
    Shanxi Engineering Research Center for Mine Ventilation and Fire Prevention, Taiyuan 030024, China)

  • Jie Wang

    (College of Safety and Emergency Management Engineering, Taiyuan University of Technology, Taiyuan 030024, China)

  • Xiaoyu Zhang

    (College of Safety and Emergency Management Engineering, Taiyuan University of Technology, Taiyuan 030024, China)

  • Junfeng Wang

    (Shanxi Engineering Research Center for Mine Ventilation and Fire Prevention, Taiyuan 030024, China)

  • Chunshan Zhou

    (College of Safety and Emergency Management Engineering, Taiyuan University of Technology, Taiyuan 030024, China
    Shanxi Engineering Research Center for Mine Ventilation and Fire Prevention, Taiyuan 030024, China)

Abstract

It is imperative to have an in-depth understanding of the effect of extraneous moisture on the spontaneous combustion of coal not only for the control and prevention of coal spontaneous combustion in the coal mining industry, but also for the optimization design and application of the technological process. In this study, the type of moisture in a coal body has been redefined for the first time from the perspective of disaster prevention and control, i.e., original occurrence of moisture in the coal matrix and the extraneous moisture from the technological process. A suit of coal bodies with different extraneous moisture was prepared by soaking long-flame coal with a low water content. Using a temperature-programmed oxidation test, the effects of extraneous moisture on the temperature increase rate of coal bodies and the emission characteristics of gaseous products during coal spontaneous combustion were studied. Moreover, combined with the characterization of thermal analysis and of pore structure test, the action the mechanism of extraneous moisture on the coal spontaneous combustion process was also explored. The experimental results indicated that the effect of the extraneous moisture content varied with the development of coal spontaneous combustion. In the slow oxidation stage, extraneous moisture played a physical inhibition role in the coal oxidation. In the accelerated oxidation stage, extraneous moisture exhibited a catalytic effect on the coal–oxygen reaction or directly participated in the reaction. After entering the rapid oxidation stage, a delayed effect appeared. When the coal temperature exceeded 180 °C, the spontaneous combustion characteristics of coals with different initial moisture contents gradually tended to achieved balance.

Suggested Citation

  • Yuguo Wu & Yulong Zhang & Jie Wang & Xiaoyu Zhang & Junfeng Wang & Chunshan Zhou, 2020. "Study on the Effect of Extraneous Moisture on the Spontaneous Combustion of Coal and Its Mechanism of Action," Energies, MDPI, vol. 13(8), pages 1-17, April.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:8:p:1969-:d:346262
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/13/8/1969/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/1996-1073/13/8/1969/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Gang Wang & Yue Wang & Lulu Sun & Xiang Song & Qiqi Liu & Hao Xu & Wenzhou Du, 2018. "Study on the Low-Temperature Oxidation Law in the Co-Mining Face of Coal and Oil Shale in a Goaf—A Case Study in the Liangjia Coal Mine, China," Energies, MDPI, vol. 11(1), pages 1-16, January.
    2. Jiuyuan Fan & Gang Wang & Jiuling Zhang, 2019. "Study on Spontaneous Combustion Tendency of Coals with Different Metamorphic Grade at Low Moisture Content Based on TPO-DSC," Energies, MDPI, vol. 12(20), pages 1-18, October.
    Full references (including those not matched with items on IDEAS)

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Florencio Fernández-Alaiz & Ana Maria Castañón & Fernando Gómez-Fernández & Antonio Bernardo-Sánchez & Marc Bascompta, 2020. "Determination and Fire Analysis of Gob Characteristics Using CFD," Energies, MDPI, vol. 13(20), pages 1-11, October.
    2. Li, Min & Yang, Xueqin & Lu, Yi & Wang, Deming & Shi, Shiliang & Ye, Qing & Li, He & Wang, Zheng, 2023. "Thermodynamic variation law and influence mechanism of low-temperature oxidation of lignite samples with different moisture contents," Energy, Elsevier, vol. 262(PB).
    3. Florencio Fernánez-Alaiz & Ana Maria Castañón & Fernando Gómez-Fernández & Antonio Bernardo-Sánchez & Marc Bascompta, 2020. "Analysis of the Fire Propagation in a Sublevel Coal Mine," Energies, MDPI, vol. 13(14), pages 1-16, July.
    4. Hua Wang & Wei Zhang & Haihui Xin & Deming Wang & Cuicui Di & Lu Liu, 2021. "Characteristics of Pyrolysis and Low Oxygen Combustion of Long Flame Coal and Reburning of Residues," Energies, MDPI, vol. 14(10), pages 1-17, May.

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Yang Zhang & Baiwei Lei & Bing Wu & Yu Meng & Binbin He, 2019. "An Experimental Study on the Heat and Mass Transfer of Liquid Nitrogen in a Loose Medium," Energies, MDPI, vol. 12(18), pages 1-17, September.
    2. Youhong Sun & Li He & Shijie Kang & Wei Guo & Qiang Li & Sunhua Deng, 2018. "Pore Evolution of Oil Shale during Sub-Critical Water Extraction," Energies, MDPI, vol. 11(4), pages 1-15, April.
    3. Hua Wang & Wei Zhang & Haihui Xin & Deming Wang & Cuicui Di & Lu Liu, 2021. "Characteristics of Pyrolysis and Low Oxygen Combustion of Long Flame Coal and Reburning of Residues," Energies, MDPI, vol. 14(10), pages 1-17, May.
    4. Chaoyu Hao & Yanling Chen & Jiren Wang & Cunbao Deng & Guang Xu & Fengwei Dai & Rui Si & Hongfei Wang & Haoyu Wang, 2018. "Study on the Effect of Iron-Based Deoxidizing Inhibitors for Coal Spontaneous Combustion Prevention," Energies, MDPI, vol. 11(4), pages 1-10, March.
    5. Liu, Wei & Zhang, Fengjie & Gao, Tiegang & Chu, Xiangyu & Qin, Yueping, 2023. "Efficient prevention of coal spontaneous combustion using cooling nitrogen injection in a longwall gob: An application case," Energy, Elsevier, vol. 281(C).
    6. Jiuyuan Fan & Gang Wang & Jiuling Zhang, 2019. "Study on Spontaneous Combustion Tendency of Coals with Different Metamorphic Grade at Low Moisture Content Based on TPO-DSC," Energies, MDPI, vol. 12(20), pages 1-18, October.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jeners:v:13:y:2020:i:8:p:1969-:d:346262. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.