Experimental studies of spontaneous combustion and anaerobic cooling of coal

被引：324

作者：

Deng, Jun ^{[1
,2
]}

Xiao, Yang ^{[1
,2
]}

Li, Qingwei ^{[1
]}

Lu, Junhui ^{[1
]}

Wen, Hu ^{[1
,2
]}

机构：

[1] Xian Univ Sci Technol, Sch Energy & Resources, Xian 710054, Peoples R China

[2] Minist Educ, Key Lab Western Mine Exploitat & Hazard Prevent, Xian 710054, Peoples R China

来源：

FUEL | 2015年 / 157卷

基金：

中国国家自然科学基金;

关键词：

Gas ratios; Oxygen consumption rate; Heat intensity; Cooling rate; Coal temperature; LOW-TEMPERATURE OXIDATION; MECHANISM; FIRES;

D O I：

10.1016/j.fuel.2015.04.063

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

080707 [能源环境工程]; 082001 [油气井工程];

摘要：

To study the spontaneous combustion and anaerobic cooling of coal, a 15-t experimental furnace was constructed, and large-scale spontaneous combustion tests were conducted. The coal sample came from No. 3 seam in Dongtan mine in Yanzhou coalfield, Shandong province, China. The variations in temperature, gas ratios, oxygen consumption rate, and heat intensity were studied. The experimental results show that for coal spontaneous combustion below 70 degrees C, the temperature increases slowly with time and the oxygen consumption rate and heat intensity increase slowly with temperature and accelerate when the temperature exceeds 100 degrees C. In anaerobic cooling, the cooling rate decreases with the decrease in temperature. When the coal temperature goes from 452.7 to 250.0 degrees C, the cooling rate decreases rapidly, whereas below 250.0 degrees C, the cooling rate decreases slowly. The variation trends of the CO2/CO, CH4/C2H6, C2H4/C2H6, and C3H8/C2H6 gas ratios in the spontaneous combustion and anaerobic cooling of coal in a certain range of temperature can be used to predict the temperature of coal. (c) 2015 Elsevier Ltd. All rights reserved.

引用

页码：261 / 269

页数：9

共 34 条

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[2]

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