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  1. Article ; Online: Detection of Spontaneous Combustion Areas of Coal Gangue Dumps and Comprehensive Governance Technologies

    Yang Liu / Xuyao Qi / Dayong Luo / Yongqing Zhang / Jiangtao Qin

    ACS Omega, Vol 8, Iss 50, Pp 47690-

    A Case Study

    2023  Volume 47700

    Keywords Chemistry ; QD1-999
    Language English
    Publishing date 2023-12-01T00:00:00Z
    Publisher American Chemical Society
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article ; Online: Coupling Relation between the Location of Cross-Cut Negative Pressure and Injecting Nitrogen into Coal Mine Goaf

    Liangzhou Chen / Xuyao Qi / Yadong Li / Haihui Xin / Zhongqiu Liang

    ACS Omega, Vol 6, Iss 12, Pp 8189-

    2021  Volume 8198

    Keywords Chemistry ; QD1-999
    Language English
    Publishing date 2021-03-01T00:00:00Z
    Publisher American Chemical Society
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  3. Article ; Online: Reaction Mechanism of Aldehyde Groups during Coal Self-Heating

    Xuyao Qi / Yawen Li / Liangzhou Chen / Jie Tang / Haihui Xin / Zhongqiu Liang

    ACS Omega, Vol 5, Iss 36, Pp 23184-

    2020  Volume 23192

    Keywords Chemistry ; QD1-999
    Language English
    Publishing date 2020-08-01T00:00:00Z
    Publisher American Chemical Society
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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    Inter-library loan at ZB MED

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  4. Article ; Online: Influence of Temperature Change on the Change Law of Free Radicals in Coal

    Yichao Yin / Yinghua Zhang / Zhian Huang / Xiangming Hu / Yukun Gao / Zhenlu Shao / Xuyao Qi / Yifu Yang

    ACS Omega, Vol 6, Iss 49, Pp 33685-

    2021  Volume 33693

    Keywords Chemistry ; QD1-999
    Language English
    Publishing date 2021-11-01T00:00:00Z
    Publisher American Chemical Society
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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    Inter-library loan at ZB MED

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  5. Article: Differences in smoldering characteristics of coal piles with different smoldering propagation directions

    Guansheng, Qi / Fangming, Liu / Wei, Lu / Weimin, Cheng / Xiaoxing, Zhong / Xuyao, Qi

    Fire safety journal. 2018 Dec., v. 102

    2018  

    Abstract: Smoldering combustion frequently occurs in the mined-out gobs of coal mines. This can act as an ignition source, triggering gas explosions and resulting in serious accidents. In this study, a smoldering test device was constructed, in which horizontal, ... ...

    Abstract Smoldering combustion frequently occurs in the mined-out gobs of coal mines. This can act as an ignition source, triggering gas explosions and resulting in serious accidents. In this study, a smoldering test device was constructed, in which horizontal, vertical, forward and reverse smoldering combustion experiments were performed to explore the smoldering characteristics (dynamic development process, smoldering rate and temperature, etc.) of a coal pile. It is found that owing to the evaporation moisture present in the coal and its re-condensation on the coal ahead of the smoldering front, a constant temperature of approximately 70–90 °C is maintained during the spread of forward smoldering. In the initial stage of reverse smoldering, both the pyrolysis and oxidation fronts exist and propagate backward; meanwhile, in the later stage, the intensity of the endothermic pyrolysis reaction is greatly reduced, resulting that the maximum smoldering temperature of reverse smoldering is slightly higher than that of the forward smoldering. The vertical smoldering temperature is 1.5–2 times that of horizontal smoldering, owing to the poorer oxygen supply in the horizontal spread. The propagation of the oxidation front is extremely slow, and is in the order of 0.1 mm/min; this makes it difficult to characterize and detect the smoldering fire, especially in inaccessible mined-out gobs with complex environments. This study provides useful insights into the identification of smoldering fire and assesses its development stage.
    Keywords coal ; combustion ; endothermy ; evaporation ; explosions ; oxygen ; pyrolysis ; temperature
    Language English
    Dates of publication 2018-12
    Size p. 77-82.
    Publishing place Elsevier Ltd
    Document type Article
    ZDB-ID 1483569-1
    ISSN 0379-7112
    ISSN 0379-7112
    DOI 10.1016/j.firesaf.2018.11.004
    Database NAL-Catalogue (AGRICOLA)

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