Effects of particle size and oil-immersed concentration on the dust layer minimum ignition temperature and combustion characteristics of oil-immersed coal

被引：0
|
作者：
Luo, Zhenmin [1 ,2 ,3 ]
Yang, Yong [1 ]
Ding, Xuhan [1 ]
Luo, Chuanxu [1 ]
Zhang, Fan [1 ]
Zhang, Man [1 ]
Shu, Chi-Min [4 ]
机构：
[1] Xian Univ Sci & Technol, Sch Safety Sci & Engn, 58 Yanta Mid Rd, Xian 710054, Shaanxi, Peoples R China
[2] Shaanxi Key Lab Prevent & Control Coal Fire, 58 Yanta Mid Rd, Xian 710054, Shaanxi, Peoples R China
[3] Shaanxi Engn Res Ctr Ind Proc Safety & Emergency R, 58 Yanta Mid Rd, Xian 710054, Shaanxi, Peoples R China
[4] Natl Yunlin Univ Sci & Technol, Dept Safety Hlth & Environm Engn, 123 Univ Rd,Sec 3, Touliu 64002, Yunlin, Taiwan
来源：
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 2024年 / 149卷 / 18期
基金：
中国国家自然科学基金;
关键词：
Minimum ignition temperature of the dust layer; Heat effect; Apparent activation energy; Ignition sensitivity; Thermal hazard characteristics; BEHAVIOR; DEVOLATILIZATION; PYROLYSIS; KINETICS; SLUDGE;
D O I：
10.1007/s10973-024-13353-8
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
This paper studied the minimum ignition temperature of the dust layer (MITL) of oil-immersed coal and the heat effect and apparent activation energy (E-a) of raw coal and oil-immersed coal. Based upon the results, the addition of crude oil to coal could reduce the MITL, ameliorate the ignition sensitivity, and increase the heat effect of coal dust. The average E-a of oil-immersed coal was lower than that of raw coal. When there was a 10.8 mass% oil-immersed concentration of oil-immersed coal with the most acceptable particle size (<= 75 mu m), the MITL was 24.24% lower than that of raw coal. Furthermore, the exothermic value of oil-immersed coal was 26.67% higher than that of raw coal. Besides, the average E-a of oil-immersed coal was 26.8% lower than that of raw coal. The research herein is expected to improve people's understanding of the thermal hazard characteristics of oil-immersed coal dust, reduce the risk of coal dust fires and explosions, and ensure production safety.
引用
收藏
页码：10297 / 10309
页数：13
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