Thermokinetic analysis of low-rank bituminous coal during low-temperature oxidation: A case study of the Jurassic coal in Shendong coalfield, Ordos Basin, China

doi:10.1016/j.energy.2021.123029

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	Thermokinetic analysis of low-rank bituminous coal during low-temperature oxidation: A case study of the Jurassic coal in Shendong coalfield, Ordos Basin, China
	Li, Zhenbao; Wang, Fengshuang; Wei, Yongqiao; Liang, Rui; Gao, Wei; Zhang, Xiaofeng
刊名	Energy
	2022-04-01
卷号	244
关键词	Activation analysis Activation energy Aromatic hydrocarbons Atmospheric temperature Bituminous coal Coal deposits Coal storage Fourier transform infrared spectroscopy Health risks Oxidation Oxygen Particle size Particle size analysis Spontaneous combustion Waste incineration Apparent activation energy Characteristic temperature Coal fields Coal spontaneous combustion Indicator gas Jurassic Lows-temperatures Ordos Basin Oxidization Temperature programmed
ISSN号	0360-5442
DOI	10.1016/j.energy.2021.123029
英文摘要	Coal spontaneous combustion, accompanying with coal mining, storage, and utilization processes, has always been a worldwide hazard to cause energy resource waste, worker health risk, and atmospheric environmental pollution. The coal temperature and indicator gases are the most crucial parameters to precisely judge the degree of coal spontaneous combustion at the initial period through assessing the coal oxidized properties. Temperature-programmed and Fourier Transform Infrared Spectroscopy experiments were implemented to simulate the macro- and micro-characterizations of four Jurassic coals in Shendong coalfield, Ordos Basin, China. Based on the second derivative of the oxygen concentration, a novel method was proposed to determine the critical and cracking temperatures of coal during low-temperature oxidization. T1 and T2 of the Jurassic coal with different particle sizes were about 65 °C and 120 °C, respectively. The produce of CO concentration represents the beginning of Jurassic coal oxidization, and the occurrence of C2H4 implies more than 100 °C of coal temperature. Ea of Jurassic samples with different particle sizes from stages to were 63.2, 44.3, and 29.7 kJ/mol, respectively. Hydroxyl groups are the dominant in coal with strong activity, and primarily affect the rate of coal oxidation at low temperature. Aliphatic hydrocarbon groups reduced as the temperature increasing after 90 °C. Oxygen-containing groups and aromatic hydrocarbons displayed a slightly decrease during low-temperature oxidization process. A theoretical basis was provided for forecasting the disasters of coal spontaneous combustion. © 2022 Elsevier Ltd
语种	英语
出版者	Elsevier Ltd
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/158021]
专题	石油化工学院机电工程学院
作者单位	School of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Li, Zhenbao,Wang, Fengshuang,Wei, Yongqiao,et al. Thermokinetic analysis of low-rank bituminous coal during low-temperature oxidation: A case study of the Jurassic coal in Shendong coalfield, Ordos Basin, China[J]. Energy,2022,244.
APA	Li, Zhenbao,Wang, Fengshuang,Wei, Yongqiao,Liang, Rui,Gao, Wei,&Zhang, Xiaofeng.(2022).Thermokinetic analysis of low-rank bituminous coal during low-temperature oxidation: A case study of the Jurassic coal in Shendong coalfield, Ordos Basin, China.Energy,244.
MLA	Li, Zhenbao,et al."Thermokinetic analysis of low-rank bituminous coal during low-temperature oxidation: A case study of the Jurassic coal in Shendong coalfield, Ordos Basin, China".Energy 244(2022).