Experimental study on microscopic action of different form moisture on coal spontaneous combustion

HAO Hong-de; ZHANG Yu-long; LÜ Ning; MA Ling-yun; WANG Jun-feng; ZHOU Chun-shan

doi:10.1016/S1872-5813(21)60019-1

Volume 49 Issue 3

Mar. 2021

Turn off MathJax

Article Contents

Article Navigation > Journal of Fuel Chemistry and Technology > 2021 > 49(3): 282-291

HAO Hong-de, ZHANG Yu-long, LÜ Ning, MA Ling-yun, WANG Jun-feng, ZHOU Chun-shan. Experimental study on microscopic action of different form moisture on coal spontaneous combustion[J]. Journal of Fuel Chemistry and Technology, 2021, 49(3): 282-291. doi: 10.1016/S1872-5813(21)60019-1

Citation:

HAO Hong-de, ZHANG Yu-long, LÜ Ning, MA Ling-yun, WANG Jun-feng, ZHOU Chun-shan. Experimental study on microscopic action of different form moisture on coal spontaneous combustion[J]. Journal of Fuel Chemistry and Technology, 2021, 49(3): 282-291. doi: 10.1016/S1872-5813(21)60019-1

Citation:

HAO Hong-de, ZHANG Yu-long, LÜ Ning, MA Ling-yun, WANG Jun-feng, ZHOU Chun-shan. Experimental study on microscopic action of different form moisture on coal spontaneous combustion[J]. Journal of Fuel Chemistry and Technology, 2021, 49(3): 282-291. doi: 10.1016/S1872-5813(21)60019-1

PDF( 1644 KB)

Experimental study on microscopic action of different form moisture on coal spontaneous combustion

doi: 10.1016/S1872-5813(21)60019-1

1.
College of Safety and Emergency Management Engineering, Taiyuan University of Technology, Taiyuan 030024, China
2.
Shanxi Jinshen Shaping Coal Industry Co., Ltd., Xinzhou 034000, China

Funds: The project was supported by the National Natural Science Foundation of China (51704207) and Research Project Supported by Shanxi Scholarship Council of China (2020-043).

Received Date: 2020-11-20
Rev Recd Date: 2020-12-24

Available Online: 2021-03-19

Publish Date: 2021-03-19

Abstract

Abstract

Moisture is one of the important factors affecting coal spontaneous combustion. Coal with different moisture contents was prepared to obtain oxidized coal samples at different temperatures through temperature programming. In situ Fourier Transform Spectrometer was used to determine content of active functional groups in different oxidized coal samples, and to study influence of moisture form on formation and transformation of microscopic functional groups during coal spontaneous combustion. Nitrogen adsorber was used to study specific surface area of different oxidized coal samples and influence of form moisture on changes of micro-pore structure during coal spontaneous combustion. Combined with the change law of functional groups and specific surface area, microscopic action of different form moisture on coal spontaneous combustion process was discussed. The action regime of outside moisture varies with the development of coal spontaneous combustion. Different forms of moisture can promote formation of phenols, alcohols, hydroxyl groups, and carbonyl-containing compounds. Effects of moisture form and its content on change of micro-specific surface area, and on evolution of aliphatic C−H components, hydroxyl-containing compounds and carbonyl-containing compounds during spontaneous combustion of coal are different. While effect of moisture form and its content on formation and transformation of hydroxyl-containing compounds and carboxylic acid compounds are similar.
- coal spontaneous combustion,
- form moisture,
- microstructure,
- action mechanism

FullText(HTML)

References(24)

References

[1]	石婷, 邓军, 王小芳, 文振翼. 煤自燃初期的反应机理研究[J]. 燃料化学学报,2004,32(6):652−657. doi: 10.3969/j.issn.0253-2409.2004.06.003 SHI Ting, DENG Jun, WANG Xiao-fang, WEN Zhen-yi. Mechanism spontaneous combustion of coal at initial stage[J]. J Fuel Chem Technol,2004,32(6):652−657. doi: 10.3969/j.issn.0253-2409.2004.06.003
[2]	MIURA K. Adsorption of water vapor from ambient atmosphere onto coal fines leading to spontaneous heating of coal stockpile[J]. Energy Fuels,2016,30(1):219−229. doi: 10.1021/acs.energyfuels.5b02324
[3]	张晓昱, 张玉龙, 王俊峰, 郝宏德, 吴玉国, 周春山. 外来水分对煤自燃过程影响及作用机制研究[J]. 燃料化学学报,2020,48(1):1−10. doi: 10.3969/j.issn.0253-2409.2020.01.001 ZHANG Xiao-yu, ZHANG Yu-long, WANG Jun-feng, HAO Hong-de, WU Yu-guo, ZHOU Chun-shan. Study on the effect and mechanism of foreign moisture on coal spontaneous combustion[J]. J Fuel Chem Technol,2020,48(1):1−10. doi: 10.3969/j.issn.0253-2409.2020.01.001
[4]	KADIO Ǧ LU Y, VAR AMAZ M. The effect of moisture content and air-drying on spontaneous combustion characteristics of two Turkish lignitesa[J]. Fuel,2003,82(13):1685−1693. doi: 10.1016/S0016-2361(02)00402-7
[5]	KÜÇÜK A, KADIOĞLU Y, GÜLABOĞLU M Ş. A study of spontaneous combustion characteristics of a Turkish lignite: particle size, moisture of coal, humidity of air[J]. Combust Flame,2003,133:255−261. doi: 10.1016/S0010-2180(02)00553-9
[6]	BEAMISH B B, GARTH F, HAMILTON R. Effect of moisture content on the R70 self-heating rate of Callide coal[J]. Int J Coal Geol,2005,:133−138.
[7]	ZHANG J, ZHANG C, QIU Y, CHEN L, TAN P, CHEN G. Evaluation of moisture readsorption and combustion characteristics of a lignite thermally upgraded with the addition of asphalt[J]. Energy Fuels,2014,28:7680−7688. doi: 10.1021/ef5019115
[8]	YU J, TAHMASEBI A, HAN Y, YIN F, LI X. A review on water in low rank coals: The existence, interaction with coal structure and effects on coal utilization[J]. Fuel Process Technol,2013,106:9−20. doi: 10.1016/j.fuproc.2012.09.051
[9]	张玉涛, 王都霞, 仲晓星. 水分在煤低温氧化过程中的影响研究[J]. 煤矿安全,2007,38(11):1−4. doi: 10.3969/j.issn.1003-496X.2007.11.001 ZHANG Yu-tao, WANG Du-xia, ZHONG Xiao-xing. Study on the effect of water on the low temperature oxidation of coal[J]. Saf Coal Mines,2007,38(11):1−4. doi: 10.3969/j.issn.1003-496X.2007.11.001
[10]	QU Z, SUN F, GAO J, PEI T, QIE Z, WANG L, PI X, ZHAO G, WU S. A new insight into the role of coal adsorbed water in low-temperature oxidation: Enhanced·OH radical generation[J]. Combust Flame,2019,208:27−36. doi: 10.1016/j.combustflame.2019.06.017
[11]	郑学召, 鲁军辉, 肖旸, 赵彦辉, 李青蔚. 高水分含量对煤自然发火特性参数影响的试验研究[J]. 安全与环境学报,2014,14(4):71−75. ZHENG Xue-zhao, LU Jun-hui, XIAO Yang, ZHAO Yan-hui, LI Qing-wei. Experimental study on the effect of high moisture content onspontaneous combustion characteristic parameters of coal[J]. J Saf Environ,2014,14(4):71−75.
[12]	LI Z, KONG B, WEI A, YANG Y. ZHOU Y, ZHANG L. Free radical reaction characteristics of coal low-temperature oxidation and its inhibition method[J]. Environ Sci Pollut Res,2016,23(23):23593−23605. doi: 10.1007/s11356-016-7589-x
[13]	WANG H, DLUGOGORSKI B Z, KENNEDY E M. Role of inherent water in low-temperature oxidation of coal[J]. Combust Sci Technol,2003,175(2):253−270. doi: 10.1080/00102200302406
[14]	ZHAI X, WANG B, WANG K, DARIUSZ O. Study on the influence of water immersion on the characteristic parameters of spontaneous combustion oxidation of low-rank bituminous coal[J]. Combust Sci Technol,2019,191(7):1101−1122. doi: 10.1080/00102202.2018.1511544
[15]	秦波涛, 宋爽, 戚绪尧, 仲晓星, 刘慈. 浸水过程对长焰煤自燃特性的影响[J]. 煤炭学报,2018,284(5):1350−1357. QIN Bo-tao, SONG Shuang, QI Xu-yao, ZHONG Xiao-xing, LIU Ci. Effect of soaking process on spontaneous combustion characteristics of long flame coal[J]. J China Coal Soc,2018,284(5):1350−1357.
[16]	冯小飞, 张成, 张小培, 黎盛鸣, 葛江, 陈刚. 水热提质对褐煤理化结构及复吸水特性的影响[J]. 燃料化学学报,2016,44(1):23−29. doi: 10.3969/j.issn.0253-2409.2016.01.004 FENG Xiao-fei, ZHANG Cheng, ZHANG Xiao-pei, LI Sheng-ming, GE Jiang, CHEN Gang. Influence of hydrothermal upgrading on physical and chemical structures and moisture readsorption characteristics of a lignite[J]. J Fuel Chem Technol,2016,44(1):23−29. doi: 10.3969/j.issn.0253-2409.2016.01.004
[17]	刘丽华, 初茉, 党彤彤, 曲洋, 孙任晖, 畅志兵. 吸湿预氧化对提质褐煤自燃倾向性的影响[J]. 燃料化学学报,2016,44(10):1153−1159. doi: 10.3969/j.issn.0253-2409.2016.10.001 LIU Li-hua, CHU Mo, DANG Tong-tong, QU Yang, SUN Rem-hui, CHANG Zhi-bing. Effect of moisture adsorption and air pre-oxidation on spontaneous combustion liability of upgraded lignite[J]. J Fuel Chem Technol,2016,44(10):1153−1159. doi: 10.3969/j.issn.0253-2409.2016.10.001
[18]	王鹏飞, 刘荣华, 桂哲, 苟尚旭, 舒威, 谭烜昊. 煤矿井下气水喷雾雾化特性及降尘效率理论研究[J]. 煤炭学报,2016,41(9):2256−2262. WANG Peng-fei, LIU Rong-hua, GUI Zhe, GOU Shang-xu, SHU Wei, TAN Xuan-hao. Theoretical research on atomization characteristics and dust suppression efficiency of air-water spray in underground coal mine[J]. J China Coal Soc,2016,41(9):2256−2262.
[19]	秦小文. 浸水风干煤体低温氧化特性研究[D]. 徐州: 中国矿业大学, 2015. QIN Xiao-wen. Study on characteristics of low temperature oxidation of Air-dried coal soaked in water[D]. Xuzhou: China University of Mining and Technology, 2015.
[20]	何启林, 王德明. 煤水分含量对煤吸氧量与放热量影响的测定[J]. 中国矿业大学学报,2005,34:358−362. doi: 10.3321/j.issn:1000-1964.2005.03.020 HE Qi-lin, WANG De-ming. Determination of the effect of coal moisture content on oxygen absorption and heat release of coal[J]. J China Univ Technol,2005,34:358−362. doi: 10.3321/j.issn:1000-1964.2005.03.020
[21]	郝朝瑜, 王继仁, 马念杰, 赵庆彪, 王鑫阳. 水分润湿煤体对煤自燃影响的热平衡研究[J]. 中国安全科学学报,2014,24(10):54−59. HAO Chao-yu, WANG Ji-ren, MA Nian-jie, ZHAO Qing-biao, WANG Xing-yang. Thermal equilibrium study on effect of wetting on coal spontaneous combustion[J]. China Safety Sci J,2014,24(10):54−59.
[22]	张玉龙. 基于宏观表现与微观特性的煤低温氧化机理及其应用研究[D]. 太原: 太原理工大学, 2014. ZHANG Yu-long. Study on low-temperature oxidation mechanism of coal based on macroscopic behaviour and microscopic characteristic and its application[D]. Taiyuan: Taiyuan University of Technology, 2014.
[23]	景晓霞. 热干燥过程中褐煤物化结构的演变及其对提质煤水分复吸的影响[D]. 太原: 太原理工大学, 2015. JING Xiao-xia. Evolution of physicochemical structure of lignite during thermal drying and its effect on moisture recovery of refined coal[D]. Taiyuan: Taiyuan University of Technology, 2015.
[24]	宋申, 王俊峰, 王涌宇, 郭亚军, 安帮. 水分对褐煤微观特性的影响研究[J]. 煤炭技术,2017,36(11):330−333. SONG Shen, WANG Jun-feng, WANG Yong-yu, GUO Ya-jun, AN Bang. Study on Effect of Moisture on Micro-characteristics of Lignite[J]. Coal Technol,2017,36(11):330−333.