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Manuscript ID : IJES-1810-1261 (R2) Visit : 77 Page: 194 - 204

10.30495/ijes.2020.674671

Article Type: Original Research

A comprehensive study on the effect of moisture content on coal spontaneous combustion tendency

Subject Areas : Mineralogy

Amir  Saffari 1 (Faculty of Mining, Petroleum and Geophysics Engineering, Shahrood University of Technology, Shahrood, Iran)
Farhang  Sereshki 2 (Faculty of Mining, Petroleum and Geophysics Engineering, Shahrood University of Technology, Shahrood, Iran)
Mohammad  Ataei 3 (Faculty of Mining, Petroleum and Geophysics Engineering, Shahrood University of Technology, Shahrood, Iran)

Received: 2018-10-10 Accepted : 2019-12-25 Published : 2020-07-01

Keywords: Moisture content, Coal Spontaneous Combustion, CPT, pollution,

Abstract :

There are several phenomenons for polluting the environment, especially in coalfields; which coal spontaneous combustion is one of them. The moisture content is one of the intrinsic characteristics of coal, which has an important role in the occurrence of this phenomenon. Therefore, this research predicts the coal spontaneous combustion tendency based on moisture content. The percentage of moisture content is a very important parameter on the occurrence of this process; so far a conclusion about the effect of moisture content on coal spontaneous combustion, a comprehensive study was done. 55 coal samples with different percentage of moisture content for the training of overall underground coalfields in Iran were collected and the CPT test method for each coal sample was carried out. Then, the method of regression analysis was used for modeling and predicting the coal spontaneous combustion tendency. The results show, the coal sample undergoes oxidation most rapidly when the moisture content supply is about under 20%, and it can reduce coal spontaneous combustion in excessed of 20%, because when moisture is present in excessed of 20%, the heat released by oxidation is used to evaporate the moisture. For validation and testing, 15 coal samples of another coalfield were collected and the CPT test method for each coal sample was carried out, and the results of the test method were compared by the regression equation. The results obtained from the models show that a good appropriate prediction has been done for determining the coal spontaneous combustion tendency by regression analysis.

References:


  1. Arisoy A (2010) Coal mine safety and preventing self-combustion of coal, In Conference: Inerma, at Istanbul, Turkey.‏
    2.
  2. Arisoy A, Akgün F (1994) Modelling of spontaneous combustion of coal with moisture content included, Fuel 73(2): 281-286.‏
    3.
  3. Arisoy A, Beamish B (2015) Mutual effects of pyrite and moisture on coal self-heating rates and reaction rate data for pyrite oxidation, Fuel 139: 107-114.‏
    4.
  4. Armstrong W (1979) Aeration in plants, Advances in Botanical Research 14: 225-332.
    5.
  5. Beamish B, Beamish R (2010) Benchmarking moist coal adiabatic oven testing, Coal Operators' Conference. University of Wollongong. Australia. pp. 264-268.
    6.
  6. Beamish B, Beamish R (2011) Experience with using a moist coal adiabatic oven testing method for spontaneous combustion assessment, Coal Operators' Conference. University of Wollongong. Australia. pp. 380-384.
    7.
  7. Beamish B, Blazak DG, Hogarth LC, Jabouri I (2005) R70 Relationships and Their Interpretation at a Mine Site, Coal Operators' Conference. University of Wollongong. Australia. pp. 183-185.
    8.
  8. Beamish B, Lin Z, Beamish R (2012) Investigating the influence of reactive pyrite on coal self-heating,‏ Coal Operators' Conference. University of Wollongong. Australia. pp. 294-299.
    9.
  9. Beamish BB, Barakat MA, St George JD (2000) Adiabatic testing procedures for determining the self-heating propensity of coal and sample ageing effects, Thermochimica Acta 362(1-2): 79-87.‏
    10.
  10. Beamish BB, Hamilton GR (2005) Effect of moisture content on the R70 self-heating rate of Callide coal, International Journal of Coal Geology 64(1-2): 133-138.‏
    11.
  11. Bhat S, Agarwal PK (1996) The effect of moisture condensation on the spontaneous combustibility of coal, Fuel 75(13): 1523-1532.‏
    12.
  12. Bhattacharyya KK (1972) The role of desorption of moisture from coal in its spontaneous heating, Fuel 51(3): 214-220.‏
    13.
  13. Bhattacharyya KK, Hodges DJ, Hinsley FB (1968) The influence of humidity on the initial stages of the spontaneous heating of coal, Min. Eng 126: 274-284.‏
    14.
  14. Buckmaster HA, Kudynska J (1992) Dynamic in situ 9 GHz cw-epr low-temperature oxidation study of selected Alberta coals: 4. Influence of moisture on hv bituminous coal, Fuel 71(10): 1147-1151.‏
    15.
  15. Ceglarska-Stefanska G, Brzóska K, Winnicki J (1998) Sorption of water vapour on exinite concentrations, Chemistry and Materials Science 4: 313-319.
    16.
  16. Chen (1991) The Spontaneous Heating of Coal: Large Scale Laboratory Assessment and Supporting Theory: a Thesis Submitted for the Degree of Doctor of Philosophy in Chemical Engineering in the University of Canterbury (Doctoral dissertation, University of Canterbury).‏
    17.
  17. Chen XD, Stott JB (1993) The effect of moisture content on the oxidation rate of coal during near-equilibrium drying and wetting at 50 ºC, Fuel 72(6): 787-792.‏
    18.
  18. Choudhury D, Sarkar A, Ram LC (2016) An autopsy of spontaneous combustion of lignite, International Journal of Coal Preparation and Utilization 36(2): 109-123.‏
    19.
  19. Clemens AH, Matheson TW, Rogers DE (1991) Low temperature oxidation studies of dried New Zealand coals, Fuel 70(2): 215-221.‏
    20.
  20. Deng J, Ma X, Zhang Y, Li Y, Zhu W (2015) Effects of pyrite on the spontaneous combustion of coal, International Journal of Coal Science & Technology 2(4): 306-311.‏
    21.
  21. Finkelman RB (2004) Potential health impacts of burning coal beds and waste banks, International Journal of Coal Geology 59(1-2): 19-24.‏
    22.
  22. Gong R, Burnell JG, Wake GC (1999) Modelling spontaneous combustion in wet lignite, Combustion Theory and Modelling 3(2): 215-232.‏
    23.
  23. Hodges DJ, Hinsley FB (1964) The influence of moisture on the spontaneous heating of coal, The Mining Engineer 123: 211-224.‏
    24.
  24. Hodges DT, Tucker JR, Hartwick TS (1976) Basic physical mechanisms determining performance of the CH 3 F laser, In International Conference on Infrared Physics (CIRP) (pp. 175-182).‏
    25.
  25. Jones RE, Townend DTA (1949) The oxidation of coal, Journal of the Society of Chemical Industry 68(7): 197-201.‏
    26.
  26. Kadioğlu Y, Varamaz M (2003) The effect of moisture content and air-drying on spontaneous combustion characteristics of two Turkish lignitesa, Fuel 82(13): 1685-1693.‏
    27.
  27. Kawatra SK, Hess MJ (1999) Environmental beneficiation of machining wastes-Part II: Measurement of the effects of moisture on the spontaneous heating of machining swarf, Journal of the Air & Waste Management Association 49(4): 477-481.‏
    28.
  28. Kaymakçi E, Didari V (2001) Relations between coal properties and spontaneous combustion parameters, Turkish Journal of Engineering and Environmental Sciences 26(1): 59-64.‏
    29.
  29. Kim AG (1995) Relative self-heating tendencies of coal, carbonaceous shales, and coal refuse. US Department of Interior, Bureau of Mines.‏
    30.
  30. King J, Krug D, Zepf D (1964) The role of oxygen complex in oxidation of carbonaceous compounds, Journal of the Chemical Society, Faraday Transactions 42(2): 297-299.‏
    31.
  31. Küçük A, Kadıoğlu Y, Gülaboğlu MŞ (2003) A study of spontaneous combustion characteristics of a Turkish lignite: particle size, moisture of coal, humidity of air, Combustion and Flame 133(3): 255-261.‏
    32.
  32. Kuenzer C, Wessling S, Zhang J, Litschke T, Schmidt M, Schulz J, Gielisch H, Wagner W (2007) Concepts for greenhouse gas emission estimating of underground coal seam fires, Geophysical Research Abstracts 9: p. 11716).‏
    33.
  33. Li X, Song H, Wang Q, Meesri C, Wal LT, Yu J (2009) Experimental study on drying and moisture re-adsorption kinetics of an Indonesian low rank coal, Journal of Environmental Sciences 21: S127-S130.‏
    34.
  34. Li YH, Skinner, JL (1986) Deactivation of dried subbituminous coal, Chemical Engineering Communications 49(1-3): 81-98.
    35.
  35. Liang X, Wang D (2003) Effects of moisture on spontaneous combustion of coal, Journal of Liaoning Technical University 22: 472-474.
    36.
  36. Mahananda AR (2014) Studies on spontaneous heating liability of some Indian coals and its protective measures (Doctoral dissertation).‏
    37.
  37. Mohalik NK, Lester E, Lowndes IS (2016) Review of experimental methods to determine spontaneous combustion susceptibility of coal–Indian context, International Journal of Mining, Reclamation and Environment 31(5): 301-332.‏
    38.
  38. Nugroho YS, McIntosh AC, Gibbs BM (1998, January) Using the crossing point method to assess the self-heating behavior of Indonesian coals, In Symposium (International) on Combustion 27( 2): 2981-2989) Elsevier.‏
    39.
  39. Onifade M, Genc B (2018) Spontaneous combustion of coals and coal-shales, International Journal of Mining Science and Technology  28(6): 933-940. ‏
    40.
  40. Panigrahi DC, Ray SK (2014) Assessment of self-heating susceptibility of Indian coal seams–a neural network approach, Archives of Mining Sciences 59(4): 1061-1076.‏
    41.
  41. Pone JDN, Hein KAA, Stracher GB, Annegarn HJ, Finkleman RB, Blake DR, McCormack JK, Schroeder P (2007) The spontaneous combustion of coal and its by-products in the Witbank and Sasolburg coalfields of South Africa, International Journal of Coal Geology 72(2): 124-140.‏
    42.
  42. Querol X, Zhuang X, Font O, Izquierdo M, Alastuey A, Castro I, Van Drooge BL, Moreno T, Grimalt JO, Elvira J, Cabanas M, Bartroli R, Hower JC, Ayora C, Plana F, Lopez-Soler A (2011) Influence of soil cover on reducing the environmental impact of spontaneous coal combustion in coal waste gobs: a review and new experimental data, International Journal of Coal Geology 85(1): 2-22.
    43.
  43. Reich MH, Snook IK, Wagenfeld HK (1992) A fractal interpretation of the effect of drying on the pore structure of Victorian brown coal, Fuel 71(6): 669-672.‏
    44.
  44. Ren TX, Edwards JS, Clarke D (1999) Adiabatic oxidation study on the propensity of pulverised coals to spontaneous combustion, Fuel 78(14): 1611-1620.‏
    45.
  45. Saffari A, Sereshki F, Ataei M (2019) Evaluation effect of macerals petrographic and pyrite contents on spontaneous coal combustion in Tabas Parvadeh and Eastern Alborz coal mines in Iran, International Journal of Coal Preparation and Utilization 1-18.‏
    46.
  46. Saffari A, Sereshki F, Ataei M, Ghanbari K (2013) Applying rock engineering systems (RES) approach to evaluate and classify the coal spontaneous combustion potential in Eastern Alborz coal mines, Int. Journal of Mining & Geo-Engineering 47(2): 115-127.‏
    47.
  47. Saffari A, Sereshki F, Ataei M, Ghanbari K (2017) Presenting an engineering classification system for coal spontaneous combustion potential, International Journal of Coal Science & Technology 4(2): 110-128.‏
    48.
  48. Schmal D, Duyzer JH, van Heuven JW (1985) A model for the spontaneous heating of coal, Fuel 64(7): 963-972.‏
    49.
  49. Singh AK, Singh RVK, Singh MP, Chandra H, Shukla NK (2007) Mine fire gas indices and their application to Indian underground coal mine fires, International Journal of Coal Geology 69(3): 192-204.‏
    50.
  50. Singh RVK, Tripathi DD, Mohalik NK, Khalkho A, Pandey J,  Mishra RK (2018) Environmental Issues Due to Fire in Coal Mines: Its Impact and Suggestions for Implementing Precautionary and Control Measures, In Environmental Pollution: pp 27-35, Springer, Singapore.‏
    51.
  51. Thomas LJ, Thomas LP (2002) Coal geology. John Wiley and Sons.‏ 67 P.
    52.
  52. Vance WE, Chen XD, Scott SC (1996) The rate of temperature rise of a subbituminous coal during spontaneous combustion in an adiabatic device: the effect of moisture content and drying methods, Combustion and Flame 106(3): 261-270.‏
    53.
  53. Wang H, Dlugogorski BZ, Kennedy EM (2002) Examination of CO2, CO, and H2O formation during low-temperature oxidation of a bituminous coal, Energy & Fuels 16(3): 586-592.‏
    54.
  54. Wang H, Dlugogorski BZ, Kennedy EM (2003) Coal oxidation at low temperatures: oxygen consumption, oxidation products, reaction mechanism and kinetic modeling, Progress in Energy and Combustion Science 29(6): 487-513.‏
    55.
  55. Wang QS, Guo S, Sun JH (2009) Oxygen and moisture effects on the thermal behavior of coal powder at elevated temperature, Fire Safety Science 1: 1-5.‏
    56.
  56. Wang W, Wang G, Liu H (2013) Heat release regular pattern of different moisture content coal in low temperature, CSIRO Earth Science & Resource Engineering 94: 419-425.
    57.
  57. Wang X, Luo Y, Vieira B (2018) Experimental technique and modeling for evaluating heat of rewetting effect on coals' propensity of spontaneous combustion based on adiabatic oxidation method, International Journal of Coal Geology 187: 1-10.‏
    58.
  58. Wiese Jr RG, Powell MA, Fyfe WS (1987) Spontaneous formation of hydrated iron sulfates on laboratory samples of pyrite-and marcasite-bearing coals, Chemical Geology 63(1-2): 29-38.‏
    59.
  59. Wu D, Norman F, Vanierschot M, Verplaetsen F, Berghmans J (2018) Self-heating characteristics of coal dust deposits by a hot gas flow in oxy-fuel atmospheres, Applied Thermal Engineering 131: 947-957.‏
    60.
  60. Xu T, Wang DM, He QL (2013) The study of the critical moisture content at which coal has the most high tendency to spontaneous combustion, International Journal of Coal Preparation and Utilization 33(3): 117-127.‏
    61.
  61. Xuyao Q, Wang D, Milke JA, Zhong X (2011) Crossing point temperature of coal, Mining science and technology (China) 21(2): 255-260.‏
    62.
  62. Yang Y, Li Z, Si L, Li J, Qin B, Li Z (2017) SOM’s effect on coal spontaneous combustion and its inhibition efficiency, Combustion Science and Technology 189(12): 2266-2283.‏
    63.
  63. Yohe GR (1958) Oxidation of Coal. Illinois State Geological Survey Report 207: 79 P.
    64.

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