Characteristics and mechanism of Glutathione in inhibiting coal spontaneous combustion

Gao, Fei; Jia, Zhe; Bai, Qi-hui; Dong, Jianjun

doi:10.1016/j.fuel.2023.129006

Cited by 7 publications

(3 citation statements)

References 32 publications

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“…The experimental research on the evolution of micro functional groups during the low-temperature oxygen consumption process of the residual coal in goaf was conducted by using an in situ Fourier infrared spectrometer (as shown in Figure ). − …”

Section: Methodsmentioning

confidence: 99%

Research on the Low-Temperature Oxygen Consumption and Low-Oxygen Gas Emission Law in Goaf of Ultrathick Coal Seams

Zheng,

Liu,

Liu

et al. 2024

ACS Omega

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Low-oxygen (oxygen concentration below 18.5%) phenomena often occur in the top coal caving working face of ultrathick coal seams, posing a serious threat to the safety of workers. The characteristics of oxygen consumption and gas production at low-constant temperature and the corresponding functional group evolution of residual coal in goaf were studied by temperatureprogrammed and infrared spectrum experiments. The influence of different factors on the emission of low-oxygen gases was studied through numerical calculation. The results show that low-temperature oxygen consumption and gas production occurred when the coal was about 40 °C. When the temperature was constant, the oxygen consumption and gas production rate increased with the extension of time. In the early stage of coal oxidation, the aliphatic C−H components were attacked by oxygen molecules and reacted with them. The asymmetric methyl and methylene groups were more likely to oxidize and produce carbonyl compounds. With the increase of nitrogen injection, the overall width of the oxidation zone (oxygen concentration was defined as 10−18%) narrowed, and the range of the oxidation zone moved forward from the depth of the goaf. The oxygen concentration in the air return corner decreased gradually, and the low-oxygen area in the air return corner expanded gradually. The distance between the lowoxygen area of the working face and the air intake corner was gradually shortened. With the increase of air intake, the width of the oxidation zone increased and moved to the depth of goaf, and the degree of low oxygen in the air return corner increased. The research results are of great significance for the understanding and prevention of the low-oxygen phenomenon in ultrathick coal seams.

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Section: Methodsmentioning

confidence: 99%

Research on the Low-Temperature Oxygen Consumption and Low-Oxygen Gas Emission Law in Goaf of Ultrathick Coal Seams

Zheng,

Liu,

Liu

et al. 2024

ACS Omega

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“…In recent years, blocking mechanism and gel foam have become hot topics and have widely drawn the attention of academia and industry, and many scholars have focused their research on the blocking mechanism of anti-fire gels [110][111][112][113][114]. The rapid development of computer technology and software technology is promoting the progress of scientific research with unprecedented efforts, especially in the field of MFPC; the numerical simulation of various inhibition technologies has gradually emerged and become the focus of academic and industrial attention [115][116][117][118][119][120][121][122]. This kind of research mainly discusses how various materials affect the active site of SCC at the molecular level.…”

Section: Keyword Clusteringmentioning

confidence: 99%

Spatiotemporal Evolution and Frontier Focus Analysis Based on Coal Fire Control Body of Knowledge

Han,

Niu,

Liu

et al. 2024

Fire

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Mine fire accidents frequently constitute a major threat to mining safety, and their potential consequences are extremely severe, which highlights the urgency of fire prevention and control research. In this study, the CiteSpace software was used to conduct a metrological analysis of 717 relevant studies in the field of mine fire prevention and control (MFPC), aiming to reveal the research trends and trends in this field. This analysis found that the annual number of MFPC articles showed a significant upward trend, indicating that it is in rapid development during the active period. China, the United States, and Australia are the main contributors in this field, and the institutional contribution of China University of Mining and Technology is particularly outstanding, reflecting the regional concentration of research activities. The analysis of cooperation networks reveals the close cross-regional collaboration among European countries. The inhibition effect and evaluation criteria and the inhibition technology under different coal characteristics have become the focus of research. Activation energy, release, and quantum chemistry have become recent hot spots, reflecting the research on the mechanism of forward physicochemical synergistic inhibition and the in-depth exploration of the molecular level. It indicates that future research will focus on the development of temperature-responsive retardant materials, the application of quantum chemistry theory, and the exploration of the microscopic mechanism of coal spontaneous combustion through molecular simulation technology to further optimize the fire prevention strategy. In summary, the findings of this study not only provide a comprehensive picture of current research activities in the MFPC field but also indicate potential directions for future research and have important guiding significance for promoting the development of this field.

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“…The findings demonstrated that polyethylene glycol-citric acid prevented the synthesis of CO and C 2 H 4 , the consumption of oxygen, and the oxidation of -CH 3 and -CH 2 . Gao [19] examined the impact of antioxidant-reduced glutathione on the tendency of coal to spontaneously combust using cross-point temperature and thermogravimetric differential scanning calorimetry, through which it was discovered that antioxidant-reduced glutathione had the ability to prevent coal from spontaneously combusting. Xue [20] utilized electron spin resonance and scanning electron microscopy to clarify the inhibition mechanism of an antioxidant-type composite inhibitor on coal oxidation.…”

Section: Introductionmentioning

confidence: 99%

Research on the Inhibitory Effect of Hydrated Phase Change Materials on Spontaneous Combustion in Coal

Wu,

Shi,

Shao

et al. 2024

Fire

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In order to study the effect of hydrated phase change materials on the suppression of spontaneous combustion in coal, a thermogravimetric experiment and a reaction activation energy analysis experiment were conducted to explore the changes in the combustion characteristic parameters, characteristic temperature, and activating energy of gas coal, long-flame coal, meagre coal, and lean coal before and after adding hydrated phase change materials. The research results indicated that hydrated phase change materials increased the characteristic temperature point of the coal samples and had effective inhibitory effects on different stages of the oxidation process. However, the effect was best at low temperatures, as hydrated phase change materials undergo phase change and absorb heat when heated at low temperatures, isolating coal from contact with oxygen. The activating energy increased by 1.138–23.048 KJ·mol−1 and the mass loss was reduced by 1.6%–9.3% after inhibition of the coal samples, indicating that the oxidation rate of the various coal samples was slowed down and, thus, spontaneous combustion can be suppressed through the use of hydrated phase change materials. At the same time, this material reduced the combustibility indices of meagre coal and lean coal, as well as the comprehensive combustion indices of long-flame coal and gas coal.

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Characteristics and mechanism of Glutathione in inhibiting coal spontaneous combustion

Cited by 7 publications

References 32 publications

Research on the Low-Temperature Oxygen Consumption and Low-Oxygen Gas Emission Law in Goaf of Ultrathick Coal Seams

Research on the Low-Temperature Oxygen Consumption and Low-Oxygen Gas Emission Law in Goaf of Ultrathick Coal Seams

Spatiotemporal Evolution and Frontier Focus Analysis Based on Coal Fire Control Body of Knowledge

Research on the Inhibitory Effect of Hydrated Phase Change Materials on Spontaneous Combustion in Coal

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