Correlation between oxygen concentration and reaction rate of low-temperature coal oxidation: A case study of long-flame coal

Coal spontaneous combustion (CSC) is one of the main disasters that plague coal mine safety production. It is of great significance to clarify the relationship between coal oxidation reaction rate and oxygen concentration for the prevention and control of CSC disasters. In the present study, an impr...

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Bibliographic Details
Published in:Energy (Oxford) 2023-07, Vol.275, p.127483, Article 127483
Main Authors: Liu, Yin, Wen, Hu, Guo, Jun, Jin, Yongfei, Fan, Shixing, Cai, Guobin, Liu, Renfei
Format: Article
Language:English
Subjects:
Coal spontaneous combustion
Oxidation kinetics
Oxygen concentration
Oxygen consumption velocity
Reaction order
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Summary:Coal spontaneous combustion (CSC) is one of the main disasters that plague coal mine safety production. It is of great significance to clarify the relationship between coal oxidation reaction rate and oxygen concentration for the prevention and control of CSC disasters. In the present study, an improved model of coal oxidation reaction order is established based on previous studies. Taking long flame coal as an example, the nonlinear relationship between coal oxidation reaction rate and oxygen concentration is obtained. In addition, the variation of oxidation kinetic parameters was studied, and the actual oxygen consumption rate of coal oxidation was calculated. The results show that oxidation reaction order of the experimental coal samples was generally
ISSN:0360-5442
DOI:10.1016/j.energy.2023.127483