Study on the Effect of Iron-Based Deoxidizing Inhibitors for Coal Spontaneous Combustion Prevention

Chaoyu Hao, Yanling Chen, Jiren Wang, Cunbao Deng, Guang Xu, Fengwei Dai, Rui Si, Hongfei Wang and Haoyu Wang
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Chaoyu Hao: College of Safety Science and Engineering, Liaoning Technical University, Fuxin 123000, China
Yanling Chen: College of Safety Science and Engineering, Liaoning Technical University, Fuxin 123000, China
Jiren Wang: College of Safety Science and Engineering, Liaoning Technical University, Fuxin 123000, China
Cunbao Deng: Security Engineering Technology Research Institute, Liaoning Technical University, Fuxin 123000, China
Guang Xu: Department of Mining Engineering and Metallurgical Engineering, Western Australian School of Mines, Curtin University, Kalgoorlie 6430, Australia
Fengwei Dai: Security Engineering Technology Research Institute, Liaoning Technical University, Fuxin 123000, China
Rui Si: College of Science, Liaoning Technical University, Fuxin 123000, China
Hongfei Wang: College of Mining, Liaoning Technical University, Fuxin 123000, China
Haoyu Wang: College of Safety Science and Engineering, Liaoning Technical University, Fuxin 123000, China

Energies, 2018, vol. 11, issue 4, 1-10

Abstract: To improve the prevention of spontaneous coal combustion, reduced iron powder and other ingredients should be added together to form an iron-based deoxidizing inhibitor, with the dual effect of oxygen consumption and inhibition. The oxygen consumption rate of the inhibitor was studied through experiments. According to the theory of coordination resistance, the coordination resistance of Fe 3+ was studied via the density functional method. Subsequently, a comparative experiment of the effects on spontaneous coal combustion was conducted. The research shows that several kinds of common resistance agents that are added to the reduced iron powder can consume oxygen. However, the rate of oxygen consumption varies. Fe 3+ produced by the reduced iron powder indicates a strong coordination resistance. When compared with traditional inhibitors of Mg 2+ , Fe 3+ has a stronger inhibition effect on the N, P, and S reactive groups in coal. The overall inhibitory effect is better than that of traditional inhibitors, because of the increased oxygen consumption and the coordination resistance of Fe 3+ on the basis of traditional inhibitors.

Keywords: coal spontaneous combustion; iron-based deoxidizing inhibitor; oxygen consumption; coordination resistance; comparative experiment (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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