PL EN


Preferencje help
Widoczny [Schowaj] Abstrakt
Liczba wyników
Tytuł artykułu

Simulation studies on the influence of other combustible gases on the characteristics of methane explosions at constant volume and high temperature

Treść / Zawartość
Identyfikatory
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Gas explosions are major disasters in coal mining, and they typically cause a large number of deaths, injuries and property losses. An appropriate understanding of the effects of combustible gases on the characteristics of methane explosions is essential to prevent and control methane explosions. FLACS software was used to simulate an explosion of a mixture of CH4 and combustible gases (C2H4, C2H6, H2, and CO) at various mixing concentrations and different temperatures (25, 60, 100, 140 and 180℃). After adding combustible gases to methane at a constant volume and atmospheric pressure, the adiabatic flame temperature linearly increases as the initial temperature increases. Under stoichiometric conditions (9.5% CH4-air mixture), the addition of C2H4 and C2H6 has a greater effect on the adiabatic flame temperature of methane than H2 and CO at different initial temperatures. Under the fuel-lean CH4-air mixture (7% CH4-air mixture) and fuel-rich mixture (11% CH4-air mixture), the addition of H2 and CO has a greater effect on the adiabatic flame temperature of methane. In contrast, the addition of combustible gases negatively affected the maximum explosion pressure of the CH4-air mixture, exhibiting a linearly decreasing trend with increasing initial temperature. As the volume fraction of the mixed gas increases, the adiabatic flame temperature and maximum explosion pressure of the stoichiometric conditions increase. In contrast, under the fuel-rich mixture, the combustible gas slightly lowered the adiabatic flame temperature and the maximum explosion pressure. When the initial temperature was 140℃, the fuel consumption time was approximately 8-10 ms earlier than that at the initial temperature of 25℃. When the volume fraction of the combustible gas was 2.0%, the consumption time of fuel reduced by approximately 10 ms compared with that observed when the volume fraction of flammable gas was 0.4%.
Rocznik
Strony
279--295
Opis fizyczny
Bibliogr. 28 poz., rys., tab., wykr.
Twórcy
autor
  • Xi’An University of Science and Technology, School of Safety Science & Engineering, 58, Yanta Mid. Rd., Xi’An, 710054, Shaanxi, Pr China
  • Shaanxi Key Laboratory of Prevention and Control of Coal Fire, 58, Yanta Mid. Rd, Xi’An, 710054, Shaanxi, Pr China
autor
  • Xi’An University of Science and Technology, School of Safety Science & Engineering, 58, Yanta Mid. Rd., Xi’An, 710054, Shaanxi, Pr China
  • Shaanxi Key Laboratory of Prevention and Control of Coal Fire, 58, Yanta Mid. Rd, Xi’An, 710054, Shaanxi, Pr China
  • Xi’An University of Science and Technology, School of Safety Science & Engineering, 58, Yanta Mid. Rd., Xi’An, 710054, Shaanxi, Pr China
  • Shaanxi Key Laboratory of Prevention and Control of Coal Fire, 58, Yanta Mid. Rd, Xi’An, 710054, Shaanxi, Pr China
autor
  • Xi’An University of Science and Technology, School of Safety Science & Engineering, 58, Yanta Mid. Rd., Xi’An, 710054, Shaanxi, Pr China
  • Shaanxi Key Laboratory of Prevention and Control of Coal Fire, 58, Yanta Mid. Rd, Xi’An, 710054, Shaanxi, Pr China
  • Xi’An University of Science and Technology, Postdoctoral Program, 58, Yanta Mid. Rd., Xi’An 710054, Shaanxi, Pr China
autor
  • Xi’An University of Science and Technology, School of Safety Science & Engineering, 58, Yanta Mid. Rd., Xi’An, 710054, Shaanxi, Pr China
  • Shaanxi Key Laboratory of Prevention and Control of Coal Fire, 58, Yanta Mid. Rd, Xi’An, 710054, Shaanxi, Pr China
autor
  • Xi’An University of Science and Technology, School of Safety Science & Engineering, 58, Yanta Mid. Rd., Xi’An, 710054, Shaanxi, Pr China
  • Shaanxi Key Laboratory of Prevention and Control of Coal Fire, 58, Yanta Mid. Rd, Xi’An, 710054, Shaanxi, Pr China
autor
  • Xi’An University of Science and Technology, School of Safety Science & Engineering, 58, Yanta Mid. Rd., Xi’An, 710054, Shaanxi, Pr China
  • Shaanxi Key Laboratory of Prevention and Control of Coal Fire, 58, Yanta Mid. Rd, Xi’An, 710054, Shaanxi, Pr China
autor
  • Xi’An University of Science and Technology, School of Safety Science & Engineering, 58, Yanta Mid. Rd., Xi’An, 710054, Shaanxi, Pr China
Bibliografia
  • [1] Z. Li, M. Gong, E. Sun, J. Wu, Y. Zhou, Effect of low temperature on the flammability limits of methane/nitrogen mixtures. Energy 36, 5521-5524 (2011). DOI: https://doi.org/10.1016/j.energy.2011.07.023.
  • [2] B. Su, Z. Luo, T. Wang, J. Zhang, F. Cheng, Experimental and principal component analysis studies on minimum oxygen concentration of methane explosion. Int. J. Hydrog. Energy 45, 12225-12235 (2020). DOI: https://doi. org/10.1016/j.ijhydene.2020.02.133.
  • [3] T. Wang, Z. Luo, H. Wen, F. Cheng, J. Deng, J. Zhao, Z. Guo, J. Lin, K. Kang, W. Wang, Effects of flammable gases on the explosion characteristics of CH4 in air. J. Loss Prev. Process Ind. 49, 183-190 (2017). DOI: https:// doi.org/10.1016/j.jlp.2017.06.018.
  • [4] G. Cui, S. Wang, J. Liu, Z. Bi, Z. Li, Explosion characteristics of a methane / air mixture at low initial temperatures. Fuel 234, 886-893 (2018). DOI: https://doi.org/10.1016/j.fuel.2018.07.139.
  • [5] M. Gieras, R. Klemens, G. Rarata, P. Wolan, Determination of explosion parameters of methane-air mixtures in the chamber of 40 dm 3 at normal and elevated temperature. J. Loss Prev. Process Ind. 19, 263-270 (2006). DOI: https://doi.org/10.1016/j.jlp.2005.05.004.
  • [6] H . Li, J. Deng, C.M. Shu, C.H. Kuo, Y. Yu, X. Hu, Flame behaviours and deflagration severities of aluminium powder-air mixture in a 20-L sphere: Computational fluid dynamics modelling and experimental validation. Fuel 276, 118028 (2020). DOI: https://doi.org/10.1016/j.fuel.2020.118028.
  • [7] M. Mitu, V. Giurcan, D. Razus, M. Prodan, D. Oancea, Propagation indices of methane-air explosions in closed vessels. J. Loss Prev. Process Ind. 47, 110-119 (2017). DOI: https://doi.org/10.1016/j.jlp.2017.03.001.
  • [8] M. Mitu, M. Prodan, V. Giurcan, D. Razus, D. Oancea, Influence of inert gas addition on propagation indices of methane-air deflagrations. Process Saf. Environ. Protect. 102, 513-522 (2016). DOI: https://doi.org/10.1016/j. psep.2016.05.007.
  • [9] B. Su, Z. Luo, T. Wang, C. Xie, F. Cheng, Chemical kinetic behaviors at the chain initiation stage of CH4/H2/air mixture. J. Hazard. Mater. 404, 123680 (2021). DOI: https://doi.org/10.1016/j.jhazmat.2020.123680.
  • [10] X.J. Gu, M.Z. Haq, M. Lawes, R. Woolley, Laminar burning velocity and Markstein lengths of methane-air mixtures. Combust. Flame. 121, 41-58 (2000). DOI: https://doi.org/10.1016/S0010-2180(99)00142-X.
  • [11] L. Liu, Z. Luo, T. Wang, F. Cheng, S. Gao, H. Liang, Effects of initial temperature on the deflagration characteristics and flame propagation behaviors of CH4 and its blends with C2H6, C2H4, CO, and H2. Energy Fuels 35, 785-795 (2021). DOI: https://doi.org/10.1021/acs.energyfuels.0c03506.
  • [12] Z. Luo, L. Liu, F. Cheng, T. Wang, B. Su, J. Zhang, S. Gao, C. Wang, Effects of a carbon monoxide-dominant gas mixture on the explosion and flame propagation behaviors of methane in air. J. Loss Prev. Process Ind. 58, 8-16 (2019). DOI: https://doi.org/10.1016/j.jlp.2019.01.004.
  • [13] M. Reyes, F. V Tinaut, A. Horrillo, A. Lafuente, Experimental characterization of burning velocities of premixed methane-air and hydrogen-air mixtures in a constant volume combustion bomb at moderate pressure and temperature. Appl. Therm. Eng. 130, 684-697 (2018). DOI: https://doi.org/10.1016/j.applthermaleng.2017.10.165.
  • [14] T. Wang, Z. Luo, H. Wen, J. Zhao, F. Cheng, C. Liu, Y. Xiao, J. Deng, Flammability limits behavior of methane with the addition of gaseous fuel at various relative humidities. Process Saf. Environ. Protect. 140, 34 (2019). DOI: https://doi.org/10.1016/j.psep.2020.05.005.
  • [15] T. Wang, Z. Luo, H. Wen, F. Cheng, L. Liu, The explosion enhancement of methane-air mixtures by ethylene in a confined chamber. Energy 214, 119042 (2021). DOI: https://doi.org/10.1016/j.energy.2020.119042.
  • [16] Y. Zhang, C. Yang, Y. Li, Y. Huang, J. Zhang, Y. Zhang, Q. Li, Ultrasonic extraction and oxidation characteristics of functional groups during coal spontaneous combustion. Fuel 242, 287-294 (2019). DOI : https://doi.org/10.1016/j.fuel.2019.01.043.
  • [17] J. Zhao, J. Deng, T. Wang, J. Song, Y. Zhang, C.M. Shu, Q. Zeng, Assessing the effectiveness of a high-temperatureprogrammed experimental system for simulating the spontaneous combustion properties of bituminous coal through thermokinetic analysis of four oxidation stages. Energy 169, 587-596 (2019). DOI: https://doi.org/10.1016/j.energy.2018.12.100.
  • [18] A.A. Pekalski, H.P. Schildberg, P.S.D. Smallegange, S.M. Lemkowitz, J.F. Zevenbergen, M. Braithwaite, H.J. Pasman, Determination of the explosion behaviour of methane and propene in air or oxygen at standard and elevated conditions. Process Saf. Environ. Protect. 83, 421-429 (2005).
  • [19] K. Holtappels, Report on the experimentally determined explosion limits, explosion pressures and rates of explosion pressure rise – Part 1: methane, hydrogen and propylene Contact. Explosion 1, 1-149 (2002).
  • [20] M. Gieras, R. Klemens, G., Experimental Studies of Explosions of Methane-Air Mixtures in a Constant Volume Chamber. Combust. Sci. Technol. 37-41 (2009). DOI: https://doi.org/10.1080/00102200802665102.
  • [21] E. Salzano, F. Cammarota, A. Di Benedetto, V. Di Sarli, Explosion behavior of hydrogene methane / air mixtures. J. Loss Prev. Process Ind. 25, 443-447 (2012). DOI: https://doi.org/10.1016/j.jlp.2011.11.010.
  • [22] K.L. Cashdollar, I.A. Zlochower, G.M. Green, R.A. Thomas, M. Hertzberg, Flammability of methane, propane, and hydrogen gases. J. Loss Prev. Process Ind. 13, 327-340 (2000).
  • [23] H . Li, J. Deng, X. Chen, C.M. Shu, C.H. Kuo, X. Zhai, Q. Wang, X. Hu, Transient temperature evolution of pulverized coal cloud deflagration in a methane-oxygen atmosphere. Powder Technol. 366, 294-304 (2020). DOI: https://doi.org/10.1016/j.powtec.2020.02.042.
  • [24] S. Zhang, H. Ma, X. Huang, S. Peng, Numerical simulation on methane-hydrogen explosion in gas compartment in utility tunnel. Process Saf. Environ. Protect. 140, 100-110 (2020). DOI: https://doi.org/10.1016/j.psep.2020.04.025.
  • [25] Y. Zhu, D. Wang, Z. Shao, X. Zhu, C. Xu, Y. Zhang, Investigation on the overpressure of methane-air mixture gas explosions in straight large-scale tunnels. Process Saf. Environ. Protect. 135, 101-112 (2019). DOI: https://doi.org/10.1016/j.psep.2019.12.022.
  • [26] J. Deng, F. Cheng, Y. Song, Z. Luo, Y. Zhang, Experimental and simulation studies on the influence of carbon monoxide on explosion characteristics of methane. J. Loss Prev. Process Ind. 36, 45-53 (2015). DOI: https://doi.org/10.1016/j.jlp.2015.05.002.
  • [27] Gexcon, FLACS Manual. Gexcon, 2009.
  • [28] Z. Luo, R. Li, T. Wang, F. Cheng, Y. Liu, Z. Yu, S. Fan, X. Zhu, Explosion pressure and flame characteristics of CO/CH4/air mixtures at elevated initial temperatures. Fuel 268, 117377 (2020). DOI: https://doi.org/10.1016/j.fuel.2020.117377.
Uwagi
PL
Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021)
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-d320ed2e-0c05-4621-9140-e4a3d066c8aa
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.