Experimental study on the influence of water immersion on spontaneous combustion of anthracite with high concentrations of sulfur-bearing minerals

被引:14
作者
Li, Xueming [1 ,2 ]
Jin, Zhixin [1 ,3 ]
Bai, Gang [1 ]
Wang, Jiren [1 ]
Gao, Fei [1 ,3 ]
Linghu, Jianshe [4 ]
机构
[1] Liaoning Tech Univ, Coll Safety Sci & Engn, Fuxin 123000, Peoples R China
[2] Minist Educ, Key Lab Mine Thermodynam Disasters & Control, Fuxin 123000, Liaoning, Peoples R China
[3] Shanxi Coking Coal Grp Co Ltd, Taiyuan 030053, Peoples R China
[4] Yangquan Coal Ind Grp Co Ltd, Yangquan 045000, Peoples R China
基金
中国国家自然科学基金;
关键词
Coal spontaneous combustion; Water immersion; Sulfur-bearing minerals; Pyrite; The simultaneous thermogravimetry-mass spectrometry; Infrared experiment; MOISTURE-CONTENT; TG-FTIR; COAL; OXIDATION; KINETICS; DECOMPOSITION; TEMPERATURE; PYRITE;
D O I
10.1007/s10973-019-09073-z
中图分类号
O414.1 [热力学];
学科分类号
070201 [理论物理];
摘要
The influence of water immersion on the spontaneous combustion characteristics of anthracite with high concentrations of sulfur-bearing minerals was studied using simultaneous thermogravimetry-mass spectrometry (TG-MS), Fourier transform infrared (FTIR) spectroscopy and X-ray diffraction. In addition, variations in the structural parameters, mass, heat release and gas evolution processes before and after water immersion were investigated. The results showed that the coal sample contained a large amount of pyrite (FeS2). After 45 days of immersion, the pyrite content in the coal decreased, and the infrared absorption peak of Si (Al)-O at 1116 cm(-1)disappeared. The TG curves did not show a mass increase. Moreover, the initial reaction temperature of immersed coal was 39 degrees C lower than that of raw coal, and the heat release increased by 127.3 J g(-1). The gas products in the samples varied mainly in quantity but not in species. MS and FTIR analyses revealed that SO(2)was the main gas produced, and the maximum SO(2)gas evolution temperatures of both coal samples were similar to the peak temperatures in the differential thermogravimetry and differential scanning calorimetry (DSC) curves. Furthermore, the infrared 3D spectrogram revealed that gas generated by immersed coal was detected at a lower temperature, the peak temperature occurred earlier, and the evolved intensity was stronger.
引用
收藏
页码:893 / 903
页数:11
相关论文
共 41 条
[1]
An investigation of the factors associated with interpretation of mine atmosphere for spontaneous combustion in coal mines [J].
Adamus, A. ;
Sancer, J. ;
Guranova, P. ;
Zubicek, V. .
FUEL PROCESSING TECHNOLOGY, 2011, 92 (03) :663-670
[2]
Simultaneous thermogravimetric - mass spectrometric study on the pyrolysis behaviour of different rank coals [J].
Arenillas, A ;
Rubiera, F ;
Pis, JJ .
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS, 1999, 50 (01) :31-46
[3]
MODELING OF SPONTANEOUS COMBUSTION OF COAL WITH MOISTURE-CONTENT INCLUDED [J].
ARISOY, A ;
AKGUN, F .
FUEL, 1994, 73 (02) :281-286
[4]
Moisture moderation during coal self-heating [J].
Arisoy, Ahmet ;
Beamish, Basil ;
Yoruk, Burhan .
FUEL, 2017, 210 :352-358
[6]
Effect of moisture content on the R70 self-heating rate of Callide coal [J].
Beamish, BB ;
Hamilton, GR .
INTERNATIONAL JOURNAL OF COAL GEOLOGY, 2005, 64 (1-2) :133-138
[7]
Thermogravimetric analytical procedures for characterizing New Zealand and eastern Australian coals [J].
Benfell, KE ;
Beamish, BB ;
Rodgers, KA .
THERMOCHIMICA ACTA, 1996, 286 (01) :67-74
[8]
Berzelius J.J., 1969, Journal of Schirren Public, V3, P51
[9]
RIETVELD REFINEMENT AND FOURIER-TRANSFORM INFRARED SPECTROSCOPIC STUDY OF THE DICKITE STRUCTURE AT LOW-TEMPERATURE [J].
BISH, DL ;
JOHNSTON, CT .
CLAYS AND CLAY MINERALS, 1993, 41 (03) :297-304
[10]
Effect of storage time on the pressure oxidation enthalpy of pyrite [J].
Bylina, I. V. ;
Mojumdar, S. C. ;
Papangelakis, V. G. .
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, 2012, 108 (03) :829-835