Simulation of oxygen diffusion in pores in the case of catalytic oxidation reactions of coal

Kovalev, V. L.; Vetchinkin, A. S.; Loginova, O. D.

doi:10.3103/s0027133014040037

Cited by 3 publications

(2 citation statements)

References 3 publications

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“…Li et al studied the kinetic mechanism of the combustion of bituminous coal and the law of gas emissions from combustion. Kovale studied the effect of oxygen diffusion heat transfer on coal spontaneous combustion. Zhang et al experimentally investigated the effects of the structural characteristics and surface heat transfer mechanism of coal seams on coal fires.…”

Section: Introductionmentioning

confidence: 99%

“…Experimental platform for the oxidation of unloaded coal samples: (1) air compressor, (2) intake valve, (3) flowmeter, (4) seal ring, (5) heating ring, (6) coal sample tank, (7) vent hole,(8) piston, (9) thermometer hole, (10) breathable mats,(11) press machine,(12) vent valve, (13) gas chromatograph,(14) temperature controller, (15) temperature acquisition card, and(16)PC [Colour figure can be viewed at wileyonlinelibrary. com] Variation curves of the CO concentration generated by the oxidation of LU coal samples [Colour figure can be viewed at wileyonlinelibrary.com]…”

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Micromechanism of spontaneous combustion and oxidation of an unloaded coal under repeated disturbance

Pan

et al. 2018

Int J Energy Res

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Summary This study presents an analysis of the effects of repeated disturbance on the spontaneous combustion and oxidation properties of coal masses that are encountered in deep mining. Raw coal samples were tested under temperature‐programmed and repeated loading‐unloading (LU) conditions. In addition, the infrared (IR) spectra of the coal samples subjected to repeated LU cycles (LU coal samples) were analyzed using OMNIC IR analysis software. The results show the following. The LU coal samples were more prone to oxidation than the original coal sample. As the number of LU cycles increased, the degree of oxidation of the coal gradually increased.

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Section: Introductionmentioning

confidence: 99%

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confidence: 99%

Micromechanism of spontaneous combustion and oxidation of an unloaded coal under repeated disturbance

Pan

et al. 2018

Int J Energy Res

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Numerical simulation and application experiment of the spontaneous combustion tendency of a coal stockpile covered with pulverized coal

et al. 2019

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In this paper, we developed a new method for preventing the spontaneous combustion of a coal stockpile covered by pulverized coal. This technique is based on the numerical‐simulation analysis of endothermic/exothermic balance in coal stockpile. Depth and height are confirmed to be the main factors influencing the endothermic/exothermic balance in coal stockpiles and the hot‐spot region is easily formed at a coal stockpile height of 1‐1.5 m and a depth of 2‐3 m, where there is the highest tendency for spontaneous combustion. The numerical simulation and the 120‐day application test both confirm that the diffusion process of oxidation can be prevented and the coal oxidation reaction can be hindered by covering the surface of the hot region with pulverized coal. As a result, the coal spontaneous combustion is prevented effectively.

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Evolution patterns of coal micro-structure in environments with different temperatures and oxygen conditions

Pan

Liu

et al. 2020

Fuel

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Simulation of oxygen diffusion in pores in the case of catalytic oxidation reactions of coal

Cited by 3 publications

References 3 publications

Micromechanism of spontaneous combustion and oxidation of an unloaded coal under repeated disturbance

Micromechanism of spontaneous combustion and oxidation of an unloaded coal under repeated disturbance

Numerical simulation and application experiment of the spontaneous combustion tendency of a coal stockpile covered with pulverized coal

Evolution patterns of coal micro-structure in environments with different temperatures and oxygen conditions

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