IDEAS home Printed from https://ideas.repec.org/a/eee/energy/v288y2024ics0360544223032218.html
   My bibliography  Save this article

Study on the influence of different rock/coal mixture ratio on thermal storage and low temperature oxidation of coal

Author

Listed:
  • Zhao, Wenbin
  • Tan, Qing
  • Zhang, Peiwei
  • Chen, Xu

Abstract

Coal mines in the goaf are formed by the collapse and accumulation of coal rock, and the process of oxidizing and heat storage of singular coal does not reflect the real environmental conditions within the airspace. In this study, coal and rock mixing on coal spontaneous combustion (CSC) is experimentally investigated, and the bituminous coals and typical siltstones, mudstones and shales in the overlying rock layers of the goaf are selected. The different rock/coal blending ratios and real low oxygen conditions in the goaf are considered. The results show that in addition to coal, shale also contains some substances such as graphite and fixed carbon, which would participate in oxidization and heat storage processes. The thermal conductivity and thermal diffusivity of the rock/coal mixtures increased with the increase of the rock blending ratio. The heat storage capacity of the three rocks is shale > mudstone > siltstone. After blending rocks in bituminous coal, the contents of functional groups –OH, –CH3, –CH2, CC, etc. is decreased, and the degree of decrease is greater with the increase of blending ratio, and the degree of decrease of shale/coal mixture is relatively small compared with the others. As the proportion of rock in the rock/coal mixture increases, all oxidized combustion stages are delayed to varying degrees. Under the same oxygen concentration, the activation energy of rock/coal mixtures is higher than bituminous coal, and the activation energy of siltstone/coal, mudstone/coal, and shale/coal increased by 25.28 %, 20.12 %, and 14.84 %, respectively. The degree of CSC inhibition by the three rock/coal mixtures is siltstone/coal > mudstone/coal > shale/coal. The research results are of great significance to the prevention and control of CSC in the real environment of goaf.

Suggested Citation

  • Zhao, Wenbin & Tan, Qing & Zhang, Peiwei & Chen, Xu, 2024. "Study on the influence of different rock/coal mixture ratio on thermal storage and low temperature oxidation of coal," Energy, Elsevier, vol. 288(C).
    • Handle: RePEc:eee:energy:v:288:y:2024:i:c:s0360544223032218
    DOI: 10.1016/j.energy.2023.129827
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0360544223032218
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.energy.2023.129827?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    References listed on IDEAS

    as
    1. Wang, Cai-Ping & Deng, Yin & Xiao, Yang & Deng, Jun & Shu, Chi-Min & Jiang, Zhi-Gang, 2022. "Gas-heat characteristics and oxidation kinetics of coal spontaneous combustion in heating and decaying processes," Energy, Elsevier, vol. 250(C).
    2. Li, Zhenbao & Wang, Fengshuang & Wei, Yongqiao & Liang, Rui & Gao, Wei & Zhang, Xiaofeng, 2022. "Thermokinetic analysis of low-rank bituminous coal during low-temperature oxidation: A case study of the Jurassic coal in Shendong coalfield, Ordos Basin, China," Energy, Elsevier, vol. 244(PB).
    3. Yan, Li & Wen, Hu & Liu, Wenyong & Jin, Yongfei & Liu, Yin & Li, Chuansheng, 2022. "Adiabatic spontaneous coal combustion period derived from the thermal effect of spontaneous combustion," Energy, Elsevier, vol. 239(PB).
    4. Pan, Rongkun & Li, Cong & Chao, Jiangkun & Hu, Daimin & Jia, Hailin, 2023. "Thermal properties and microstructural evolution of coal spontaneous combustion," Energy, Elsevier, vol. 262(PA).
    Full references (including those not matched with items on IDEAS)

    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. Deng, Jun & Yang, Nannan & Wang, Caiping & Yin, Deng & Xiaoyong, Zhao & He, Yongjun, 2023. "Study on staged heat transfer law of coal spontaneous combustion in deep mines," Energy, Elsevier, vol. 285(C).
    2. Liu, Hao & Li, Zenghua & Miao, Guodong & Yang, Jingjing & Wu, Xiangqiang & Li, Jiahui, 2023. "Insight into the chemical reaction process of coal during the spontaneous combustion latency," Energy, Elsevier, vol. 263(PB).
    3. Huang, Jiliang & Tan, Bo & Gao, Liyang & Fan, Long & Shao, Zhuangzhuang & Wang, Haiyan & Qi, Qingjie, 2024. "Study on the evolution characteristics of molecular surface active sites of low-rank coal in low-temperature oxidation stage," Energy, Elsevier, vol. 294(C).
    4. Liu, Yin & Wen, Hu & Guo, Jun & Jin, Yongfei & Fan, Shixing & Cai, Guobin & Liu, Renfei, 2023. "Correlation between oxygen concentration and reaction rate of low-temperature coal oxidation: A case study of long-flame coal," Energy, Elsevier, vol. 275(C).
    5. Qin, Tao & Lu, Qiuxiang & Xiang, Hao & Luo, Xiulin & Shenfu, Yuan, 2023. "Ca promoted Ni–Co bimetallic catalyzed coal pyrolysis and char steam gasification," Energy, Elsevier, vol. 282(C).
    6. Zhang, Xun & Zou, Jiahui & Lu, Bing & Huang, Ge & Yu, Chen & Liang, Huimin, 2023. "Experimental study on effect of mudstone on spontaneous combustion of coal," Energy, Elsevier, vol. 285(C).
    7. Zhao, Xingguo & Dai, Guanglong & Qin, Ruxiang & Zhou, Liang & Li, Jinhu & Li, Jinliang, 2024. "Spontaneous combustion characteristics of coal based on the oxygen consumption rate integral," Energy, Elsevier, vol. 288(C).
    8. Wang, Xiaorui & Zhang, Qinghe & Yuan, Liang, 2024. "A coupled thermal-force-chemical-displacement multi-field model for underground coal gasification based on controlled retraction injection point technology and its thermal analysis," Energy, Elsevier, vol. 293(C).
    9. Yu, Minggao & Yang, Ning & Li, Haitao & Wang, Liang & Wu, Mingqiu & Wang, Fengchuan & Chu, Tingxiang & Wang, Kai, 2024. "Numerical investigation on the effects of axial-stress loads on the temperature-programmed oxidation characteristics of loose broken coal," Energy, Elsevier, vol. 289(C).
    10. Liu, Hongwei & Wang, Yongzhen & Lv, Liang & Liu, Xiao & Wang, Ziqi & Liu, Jun, 2023. "Oxygen-enriched hierarchical porous carbons derived from lignite for high-performance supercapacitors," Energy, Elsevier, vol. 269(C).
    11. Zhao, Jingyu & Hang, Gai & Song, Jiajia & Lu, Shiping & Ming, Hanqi & Chang, Jiaming & Deng, Jun & Zhang, Yanni & Shu, Chi-Min, 2023. "Spontaneous oxidation kinetics of weathered coal based upon thermogravimetric characteristics," Energy, Elsevier, vol. 275(C).
    12. Liu, Qiqi & Liu, Chuang & Ma, Jiayu & Liu, Zhenyi & Sun, Lulu, 2024. "Comprehensive evaluation of low-temperature oxidation characteristics of low-rank bituminous coal and oil shale," Energy, Elsevier, vol. 294(C).
    13. Li, Jinliang & Lu, Hao & Lu, Wei & Li, Jinhu & Zhang, Qingsong & Zhuo, Hui, 2024. "Study on the kinetic characteristics and control steps of gas production in coal spontaneous combustion under the oxidation path," Energy, Elsevier, vol. 295(C).
    14. Meng, Xianliang & Sun, Jiali & Chu, Ruizhi & Fan, Lulu & Jiang, Xiaofeng & Tang, Ludeng & Zheng, Donglin, 2023. "Effect of active functional groups in coal on the release behavior of small molecule gases during low-temperature oxidation," Energy, Elsevier, vol. 273(C).
    15. Yang, Gang & Song, Dazhao & Wang, Man & Qiu, Liming & He, Xueqiu & Khan, Majid & Qian, Sun, 2024. "New insights into dynamic disaster monitoring through asynchronous deformation induced coal-gas outburst mechanism of tectonic and raw coal seams," Energy, Elsevier, vol. 295(C).
    16. Li, Jin-liang & Lu, Wei & Li, Jin-hu & Zhang, Qinsong & Zhuo, Hui, 2022. "Thermodynamics of oxygen-containing intermediates and their role in coal spontaneous combustion," Energy, Elsevier, vol. 260(C).
    17. Duo, Zhang & Xuexue, Liu & Hu, Wen & Shoushi, Zhang & Hongquan, Wang & Yi, Sun & Hao, Feng, 2024. "Effect of nucleating agents on fire prevention of dry ice from compound inert gas," Energy, Elsevier, vol. 286(C).
    18. Zhao, Qi & Li, Yi & Chen, Xianfeng, 2022. "Fire extinguishing and explosion suppression characteristics of explosion suppression system with N2/APP after methane/coal dust explosion," Energy, Elsevier, vol. 257(C).
    19. Wang, Kai & Hu, Lihong & Deng, Jun & Zhang, Yanni & Zhang, Jiaxin, 2023. "Inhibiting effect and mechanism of polyethylene glycol - Citric acid on coal spontaneous combustion," Energy, Elsevier, vol. 275(C).
    20. Changkui Lei & Xueqiang Shi & Lijuan Jiang & Cunbao Deng & Jun Nian & Yabin Gao, 2023. "Study on the Effect of External Air Supply and Temperature Control on Coal Spontaneous Combustion Characteristics," Sustainability, MDPI, vol. 15(10), pages 1-15, May.

    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:eee:energy:v:288:y:2024:i:c:s0360544223032218. 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: Catherine Liu (email available below). General contact details of provider: http://www.journals.elsevier.com/energy .

    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.