International Scientific Journal


Biomass-derived syngas is prone to leakage during transportation. To safely use biomass-derived syngas, we need to study the combustion characteristics of material syngas the purpose of this paper is: at T = 303 K, P = 0.1 MPa, under the condition of the spherical expansion flame method, calculate the laminar burning velocity, and used the Chemkin module of ANSYS to simulate four mechanisms (GRI-3.0,FFCM-1,Li-2015,SanDiego +NOx-2018) to compare, select more appropriate reaction mechanism through experimental data for related research. It was found that the chemical reaction mechanism of GRI-3.0 is more in line with the experimental results. It is found that the experimental results are in good agreement with the linear extrapolation method. When the H2 concentration in-creases from 22-42%, the peak laminar burning velocity moves in the direction of the lean fuel side. When the H2 concentration increases to 42%, the laminar burning velocity is the fastest, reaching 0.78 m/s. The effect of H2 on thermal diffusivity is high. When H2 concentration reaches 42%, its thermal diffusivity is much higher than other gas components. The adiabatic flame temperature of F1 (22% H2, 45% CO, 9.6% CH4, 23.4% CO2)-air mixtures is the highest, approaching 2196 K. The peak adiabatic flame temperature of F5 (42% H2, 25% CO, 9.6% CH4, 23.4% CO2)-air mixtures is 2082 K, which is comparatively low. Nonetheless, the H2 concentration in F5-air mixtures is higher than that in F1-air mixtures, indicating that H2 has less influence on adiabatic flame temperature than CO. The positive reactions to accelerate laminar burning velocity mainly include R99, R38, and R46. The R52 and R35 can inhibit laminar burning velocity. There are many factors affecting laminar burning velocity, among which high reactive free radicals are the main factors, and the competition between chain branching reaction and chain termination reaction for high reactive free radicals also affects laminar burning velocity. With the increase of concentration of H2, participate in the reaction of the molar mass fraction of highly reactive free radicals and the laminar burning velocity.
PAPER REVISED: 2021-06-15
PAPER ACCEPTED: 2022-06-20
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THERMAL SCIENCE YEAR 2022, VOLUME 26, ISSUE Issue 6, PAGES [5267 - 5276]
  1. Watanabe, H., et al., NOx formation and reduction mechanisms in staged O2/CO2 combustion, Combustion and flame, 158. (2011), 7, pp. 1255-1263
  2. Xiang, L., et al., Numerical study on CH4 laminar premixed flames for combustion characteristics in the oxidant atmospheres of N2/CO2/H2O/Ar-O2, Journal of the Energy Institute, 93. (2020), 4, pp. 1278-1287
  3. Zhou, Q., et al., Effects of fuel composition and initial pressure on laminar flame speed of H2/CO/CH4 bio-syngas, Fuel, 238. (2019), pp. 149-158
  4. Yao, Z., et al., Experimental study on explosion characteristics of premixed syngas/air mixture with different ignition positions and opening ratios, Fuel, 279. (2020), p. 118426
  5. Yao, Z., et al., On explosion characteristics of premixed syngas/air mixtures with different hydrogen volume fractions and ignition positions, Fuel, 288. (2021), p. 119619
  6. MA, A.-l., et al., Study on the combustion characteristics of the bio-briquette, Journal of Henan Polytechnic University (Natural Science). (2009),
  7. Liu, Q., et al., Co-firing of coal and biomass in oxy-fuel fluidized bed for CO2 capture: A review of recent advances, Chinese Journal of Chemical Engineering, 27. (2019), 10, pp. 2261-2272
  8. Law, C.K.,O. Kwon, Effects of hydrocarbon substitution on atmospheric hydrogen-air flame propagation, International Journal of Hydrogen Energy, 29. (2004), 8, pp. 867-879
  9. Huang, Z., et al., Measurements of laminar burning velocities for natural gas-hydrogen-air mixtures, Combustion and flame, 146. (2006), 1-2, pp. 302-311
  10. Wang, J., et al., Effect of hydrogen addition on early flame growth of lean burn natural gas-air mixtures, international journal of hydrogen energy, 35. (2010), 13, pp. 7246-7252
  11. Ma, Q., et al., Effects of hydrogen on combustion characteristics of methane in air, International journal of hydrogen energy, 39. (2014), 21, pp. 11291-11298
  12. Momeni, M., et al., Experimental study on effects of particle shape and operating conditions on combustion characteristics of single biomass particles, Energy & Fuels, 27. (2013), 1, pp. 507-514
  13. William, F.A., Diffusion flames and droplet burning, in: Combustion Theory, (Ed., Editor^Editors), CRC Press. 2018, pp. 38-91.
  14. Keesee, C.L., et al., Laminar flame speed measurements of synthetic gas blends with hydrocarbon impurities. American Society of Mechanical Engineers, 2015.
  15. Krejci, M.C., et al., Laminar flame speed and ignition delay time data for the kinetic modeling of hydrogen and syngas fuel blends, Journal of Engineering for Gas Turbines and Power, 135. (2013), 2
  16. Zhang, Q., et al., Experimental and numerical study of the effects of oxygen-enriched air on the laminar burning characteristics of biomass-derived syngas, Fuel, 285. (2021), p. 119183
  17. Markstein, G.H., Nonsteady flame propagation: AGARDograph. Elsevier, 2014.
  18. Halter, F., et al., Nonlinear effects of stretch on the flame front propagation, Combustion and Flame, 157. (2010), 10, pp. 1825-1832
  19. Ronney, P.D.,G.I. Sivashinsky, A theoretical study of propagation and extinction of nonsteady spherical flame fronts, SIAM Journal on Applied Mathematics, 49. (1989), 4, pp. 1029-1046
  20. Bradley, D., et al., Burning velocities, Markstein lengths, and flame quenching for spherical methane-air flames: a computational study, Combustion and flame, 104. (1996), 1-2, pp. 176-198
  21. Clavin, P., Dynamic behavior of premixed flame fronts in laminar and turbulent flows, Progress in energy and combustion science, 11. (1985), 1, pp. 1-59
  22. Hu, X., et al., Investigation of laminar flame speeds of CH4/O2/CO2 mixtures at ordinary pressure and kinetic simulation, Energy, 70. (2014), pp. 626-634
  23. Wang, H., et al., High-temperature combustion reaction model of H2, in: High-temperature Combustion Reaction Model of H2. CO/C1-C4 Compounds, (Ed., Editor^Editors. 2007.
  24. Chu, H., et al., Effects of N2 dilution on laminar burning velocity, combustion characteristics and NOx emissions of rich CH4-air premixed flames, Fuel, 284. (2021), p. 119017
  25. Xie, M., et al., Numerical analysis on the effects of CO2 dilution on the laminar burning velocity of premixed methane/air flame with elevated initial temperature and pressure, Fuel, 264. (2020), p. 116858
  26. Chen, J., et al., Kinetic Analysis of Laminar Combustion Characteristics of a H2/Cl2 Mixture at CO2/N2 Dilution, ACS omega, 7. (2022), 8, pp. 7350-7360
  27. Li, Q., et al., Measurements of laminar flame speeds and flame instability analysis of 2-methyl-1-butanol-air mixtures, Fuel, 112. (2013), pp. 263-271
  28. Liu, Q., et al., Parameter extraction from spherically expanding flames propagated in hydrogen/air mixtures, International Journal of Hydrogen Energy, 44. (2019), 2, pp. 1227-1238
  29. Smith, G.P., et al., GRI 3.0 Mechanism, Gas Research Institute (www. me. berkeley. edu/gri_mech). (1999),
  30. Smith, G.P., et al., Foundational fuel chemistry model version 1.0 (FFCM-1), epub, accessed July, 26. (2016), p. 2018
  31. Li, X., et al., Uncertainty analysis of the kinetic model prediction for high-pressure H2/CO combustion, Proceedings of the Combustion Institute, 35. (2015), 1, pp. 617-624
  32. Rose, H., The effects of affirmative action programs: Evidence from the University of California at San Diego, Educational Evaluation and Policy Analysis, 27. (2005), 3, pp. 263-289

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