Thermal analysis of spontaneous combustion behavior of partially oxidized coal

被引：177

作者：

Deng, Jun ^{[1
,2
]}

Zhao, Jingyu ^{[1
,2
]}

Zhang, Yanni ^{[1
,2
]}

Huang, Anchi ^{[3
]}

Liu, Xiangrong ^{[1
,4
]}

Zhai, Xiaowei ^{[1
,2
]}

Wang, Caiping ^{[1
,2
]}

机构：

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

[2] Xian Univ Sci & Technol, Sch Safety Sci & Engn, Xian 710054, Shaanxi, Peoples R China

[3] Natl Yunlin Univ Sci & Technol, Grad Sch Engn Sci & Technol, Touliu 64002, Yunlin, Taiwan

[4] Xian Univ Sci & Technol, Sch Chem, Xian 710054, Shaanxi, Peoples R China

来源：

PROCESS SAFETY AND ENVIRONMENTAL PROTECTION | 2016年 / 104卷

基金：

中国国家自然科学基金;

关键词：

Spontaneous combustion; Partially oxidized coal; CO concentration and production rate; Oxygen consumption rate; Heat release rate; Macro-characteristic parameters; LOW-TEMPERATURE OXIDATION; SIMULATION; FLOTATION; TENDENCY;

D O I：

10.1016/j.psep.2016.09.007

中图分类号：

X [环境科学、安全科学];

学科分类号：

083001 [环境科学];

摘要：

Research on partially oxidized coal helps in the early detection of spontaneous combustion due to secondary oxidation of the coal remaining in mined-out areas. Three types of coal samples were used in this study. A self-designed temperature-programmable experimental system was developed to investigate the spontaneous combustion characteristics of partially oxidized coal. In addition, the differences between the oxidation characteristics of a fresh and a partially oxidized coal sample were studied. The CO concentration and its production rate, the oxygen consumption rate and the heat release rate were used as macro-characteristic parameters to show the oxidation characteristics. The results show that the characteristic parameters increased faster with temperature for partially oxidized coal compared to a fresh sample up to a temperature of 110-140 degrees C. Above this temperature the opposite is observed. (C) 2016 Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.

引用

页码：218 / 224

页数：7

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