Semi-enclosed experimental system for coal spontaneous combustion for determining regional distribution of high-temperature zone of coal fire

Springer Science and Business Media LLC - 2022
Jingyu Zhao1, Hanqi Ming1, Tao Guo2, Yuxuan Zhang3, Jun Deng4, Jiaqi Song1, Qiufeng Zeng5, Chi‐Min Shu6
1School of Safety Science and Engineering, Xi’an University of Science & Technology, Xi’an 710054, China
2Xi’an High-Tech Zone Emergency Management Bureau, Xi’an, 710065, China
3Shaanxi Coal Chemical Industry Technology Research Institute Co. Ltd, Xi'an, 710065, China
4Shaanxi Key Laboratory of Prevention and Control of Coal Fire, Xi’an University of Science & Technology, Xi’an, 710054, China
5Post-Doctoral Research Centre for Ecology, Institute for Arid Ecology and Environment, Xinjiang University, Urumqi, 830046, China
6Department of Safety, Health, and Environmental Engineering, National Yunlin University of Science and Technology, Douliou, 64002, Yunlin, Taiwan, China

Tóm tắt

AbstractTemperature variation and gas generation at different depths and positions in the coal combustion process were studied to determine the propagation and evolution of high temperature regions in the process of coal spontaneous combustion. This study selected coal samples from Mengcun, Shaanxi Province, People’s Republic of China, and developed a semi-enclosed experimental system (furnace) for simulating coal combustion. The thermal mass loss of coal samples under various heating rates (5, 10, and 15 °C/min) was analyzed through thermogravimetric analysis, and the dynamic characteristics of the coal samples were analyzed; the reliability of the semi-enclosed experimental system was verified through the equal proportional method of fuzzy response. The results reveal that the high-temperature zone is distributed nonlinearly from the middle to the front end of the furnace, and the temperatures of points in this zone decreased gradually as the layer depth increased. The apparent activation energy of the coal samples during combustion first increased and then decreased as the conversion degree increased. Furthermore, the proportion of mass loss and the mass loss rate in the coal samples observed in the thermogravimetric experiment is consistent with that observed in the first and second stages of the experiment conducted using the semi-enclosed system. The research findings can provide a theoretical basis for the prevention and control of high-temperature zones in coal combustion.

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Tài liệu tham khảo

Alipour M, Alizadeh B, Jahangard A, GandomiSani A (2021) Wildfire events at the Triassic-Jurassic boundary of the Tabas Basin, Central Iran. Int J Coal Sci Technol 8(5):897–907. https://doi.org/10.1007/s40789-021-00436-2

Elick JM (2013) The effect of abundant precipitation on coal fire subsidence and its implications in Centralia. PA Int J Coal Geol 105(1):110–119

Fan L, Liu S (2021) Respirable nano-particulate generations and their pathogenesis in mining workplaces: a review. Int J Coal Sci Technol 8(2):179–198. https://doi.org/10.1007/s40789-021-00412-w

Gehin E, Skelton B, Vallero DA (2016) Air pollution control and waste management. Process Saf Environ Prot 101:1

Guo J, Wen H, Zheng XZ, Liu Y, Cheng XJ (2019) A method for evaluating the spontaneous combustion of coal by monitoring various gases. Process Saf Environ Prot 126(1):223–231

Hao Y, Liu Y, Weng JH, Gao Y (2016) Does the environmental kuznets curve for coal consumption in China exist new evidence from spatial econometric analysis. Energy 114(1):1214–1223

Huang JJ, Bruining J, Wolf K (2001) Modeling of gas flow and temperature fields in underground coal fires. Fire Safety J 36(5):477–489

Ide ST, Orrjr F (2011) Comparison of methods to estimate the rate of CO2 emissions and coal consumption from a coal fire near Durango, CO. Int J Coal Geol 86(1):95–107

Kuenzer C, Zhang JZ, Sun YL, Jia Y, Dech S (2012) Coal fires revisited: The Wuda coal field in the aftermath of extensive coal fire research and accelerating extinguishing activities. Int J Coal Geol 102:75–86

Ma L, Guo RZ, Gao Y, Ren LF, Wei GM, Li CH (2019) Study on coal spontaneous combustion characteristics under methane-containing atmosphere. Combust Sci Technol 191:1456–1472

Ma L, Guo RZ, Wu MM, Wang WF, Wei GM (2020) Determination on the hazard zone of spontaneous coal combustion in the adjacent gob of different mining stages. Process Saf Environ Prot 142(4):370–379

Nyakundi MM (2014) Energy and the Environment: the relationship between coal production and the environment in China. Nat Resour Res 23(2):285–298

Onifade M, Genc B, Bada S (2020) Spontaneous combustion liability between coal seams: a thermogravimetric study. Int J Min Sci Techno 30(5):691–698

Pandey B, Agrawal M, Singh S (2014) Assessment of air pollution around coal mining area: emphasising on spatial distributions, seasonal variations and heavy metals, using cluster and principal component analysis. Atmos Pollut Res 5:79–86

Qin BT, Wang HT, Yang JZ, Liu LZ (2016) Large-area goaf fires: a numerical method for locating high-temperature zones and assessing the effect of liquid nitrogen fire control. Environ Earth Sci 75(21):1396

Rosema A, Guan H, Veld H (2001) Simulation of spontaneous combustion, to study the causes of coal fires in the Rujigou Basin. Fuel 80(1):7–16

Roy D, Gautam S, Singh P, Singh G, Kanti B, Aditya D, Patra K (2016) Carbonaceous species and physicochemical characteristics of PM10 in coal mine fire area—a case study. Air Qual Atmos Hlth 9:429–437

Saini V, Gupta RP, Arora MK (2016) Environmental impact studies in coalfields in India: a case study from Jharia coal-field. Renew Sust Energy Revr 53:1222–1239

Song ZY, Zhu HQ, Tan B, Wang HY, Qin XF (2014) Numerical study on effects of air leakages from abandoned galleries on hill-side coal fires. Fire Safety J 69:99–110

Song YW, Yang SQ, Xu Q, Cai JW, Hu XC, Sang NW, Zhang ZC (2019) Effect of low-temperature oxidation of coal with different metamorphic degrees on coal quality characteristics and outburst comprehensive index. Process Saf Environ Prot 132:142–152

Song ZY, Huang XY, Jiang JC, Pan XH (2020) A laboratory approach to CO2 and CO emission factors from underground coal fires. Int J Coal Geol 219:103382

Song JJ, Deng J, Zhao JY, Zhang YN, Wang CP, Shu CM (2021) Critical particle size analysis of gas emission under high-temperature oxidation of weathered coal. Energy 214:118995

Stracher GB, Taylor TP (2004) Coal fires burning out of control around the world: thermodynamic recipe for environmental catastrophe. Int J Coal Geol 59(1):7–17

Sun XF, Shao HY, Xiang XY, Yuan LG, Zhou YZ, Xian W (2020) A coupling method for eco-geological environmental safety assessment in mining areas using PCA and catastrophe theory. Nat Resour Res 29(3):4133–4148

Tan B, Zhang FC, Zhang QS, Wei HY, Shao ZZ (2019) Fire fighting of subsurface coal fires with comprehensive techniques for detection and control: a case study of the Fukang coalfire in the Xinjiang region of China. Environ Sci Pollut R 26:29570–29584

Taraba B, Michalec Z (2011) Effect of longwall face advance rate on spontaneous heating process in the gob area–CFD modelling. Fuel 90(8):2790–2797

Wang CP, Xiao Y, Li QW, Deng J, Wang K (2018) Free radicals, apparent activation energy, and functional groups during low-temperature oxidation of Jurassic coal in Northern Shaanxi. Int J Min Sci Techno 28(3):469–475

Wang K, Fan HB, Gao P, He YZ, Yang C (2020a) Influence of water content on the coal spontaneous combustion behavior during low-temperature pre-pyrolysis processes. Combust Sci Technol 193(12):1–12

Wang ZY, Cheng YP, Wang L, Zhou HX (2020b) Characterisation of pore structure and the gas diffusion properties of tectonic and intact coal: implications for lost gas calculation. Process Saf Environ Prot 135(1):12–21

Wessling S, Kuenzer C, Kessels W, Wuttke MW (2008) Numerical modeling for analysing thermal surface anomalies induced by underground coal fires. Int J Coal Geol 74(3–4):175–184

Wolf K, Bruining H (2007) Modeling the interaction between underground coal fires and theirs roof rocks. Fuel 86(17–18):2761–2777

Xia TQ, Zhou FB, Liu JS, Kang JH, Gao F (2014) A fully coupled hydro-thermo-mechanical model for the spontaneous combustion of underground coal seams. Fuel 125(125):106–115

Xiao Y, Lu JH, Wang CP, Deng J (2016) Experimental study of high-temperature fracture propagation in anthracite and destruction of mudstone from coalfield using high-resolution microfocus x-ray computed tomography. Rock Mech Rock Eng 49(9):3723–3734

Xu J, Zhou M, Li HL (2018a) The drag effect of coal consumption on economic growth in China during 1953–2013. Resour Consery Recy 129:326–332

Xu Q, Yang SQ, Tang ZQ, Cai JW, Zhong Y, Zhou BZ (2018b) Free radical and functional group reaction and index gas CO emission during coal spontaneous combustion. Combust Sci Technol 190(5):834–848

Xu Q, Yang SQ, Yang WM, Tang ZQ, Zhou BZ (2020) Micro-structure of crushed coal with different metamorphic degrees and its low-temperature oxidation. Process Saf Environ Prot 140:330–338

Yuan L, Smith AC (2007) Computational fluid dynamics modeling of spontaneous heating in longwall gob areas. Trans Soc Min Metall Explor 322:37–44

Zhang J, An JY, Wen ZH, Zhang KX, Mamun NAA (2020) Numerical investigation of coal self-heating in longwall goaf considering airflow leakage from mining induced crack. Process Saf Environ Prot 134:353–370

Zhao JY, Deng J, Chen L, Wang T, Song JJ, Zhang YN, Shu CM, Zeng Q (2019a) Correlation analysis of the functions groups and exothermic characteristic of bituminous coal molecules during high-temperature oxidation. Energy 181:136–147

Zhao JY, Deng J, Wang T, Song JJ, Zhang YN, Shu CM, Zeng Q (2019b) Assessing the effectiveness of a high-temperature-programmed experimental system for simulating the spontaneous combustion properties of bituminous coal through thermokinetic analysis of four oxidation stages. Energy 169(15):587–596

Zhao JY, Wang T, Deng J, Shu CM, Zhang YX (2020) Microcharacteristic analysis of CH4 emissions under different conditions during coal spontaneous combustion with high-temperature oxidation and in situ FTIR. Energy 209(9):118494

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