Thermodynamic characteristics of weakly caking coal oxidation and variation law of gaseous products in low oxygen concentration environment

Ren, Li-Feng; Yu, Xin; Li, Qing-Wei; Tao, Fan; Weng, Teng-Fei; Zhai, Xiao-Wei; Ma, Teng

doi:10.1016/j.csite.2024.105171

Case Studies in Thermal Engineering

2024

DOI: 10.1016/j.csite.2024.105171

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Thermodynamic characteristics of weakly caking coal oxidation and variation law of gaseous products in low oxygen concentration environment

Li-Feng Ren,

Xin Yu,

Qing-Wei Li

et al.

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2024

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Study on the Characteristics of Combustible Mixed Gas Production during Lignite Oxidation Process

Ma,

Zhu,

Yuan

et al. 2024

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CO, H2, and other combustible gases will be produced during coal oxidation in coal mines, which will increase the risk of explosion when mixed with methane. Therefore, it is very important to understand the production characteristics of combustible gas during coal oxidation. In this paper, a programmed temperature gas test system is built to study the impact of lignite on the production of gases at different particle sizes and temperatures, and the release characteristics of gases are also analyzed. The result shows that the production of combustible gas is influenced by the coal particle size significantly when the temperature is above 200 °C, and it decreases as the particle size increases. CO is the main gas during the early stage of coal spontaneous combustion, and the release of CH4 and H2 increases after 300 °C. The fitted equations of gas generation and temperature are consistent with the experimental results. The research results are helpful in understanding the hazards of coal spontaneous combustion and have a certain guiding significance for coal mine monitoring and prevention of coal spontaneous combustion.

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Study on the Characteristics of Combustible Mixed Gas Production during Lignite Oxidation Process

Ma,

Zhu,

Yuan

et al. 2024

Fire

View full text Add to dashboard Cite

show abstract

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Thermodynamic characteristics of weakly caking coal oxidation and variation law of gaseous products in low oxygen concentration environment

Cited by 1 publication

References 35 publications

Study on the Characteristics of Combustible Mixed Gas Production during Lignite Oxidation Process

Study on the Characteristics of Combustible Mixed Gas Production during Lignite Oxidation Process

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