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Flame characteristics of a non-premixed oxy-fuel jet in a lab-scale furnace

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  • Oh, Jeongseog
  • Noh, Dongsoon

Abstract

The effect of varying the fuel and oxidizer composition on flame characteristics in a non-premixed oxy-methane flame was experimentally investigated in a lab-scale furnace with a slot-type burner. The fuel composition was varied in the range of XF,CH4 = 70∼100%, XF,H2 = 0∼15%, XF,CO = 0∼10%, and XF,CO2 = 0∼30% while the oxidizer composition was changed in the range of XOx,O2 = 70∼100 and XOx,CO2 = 0∼30%. Flow velocity at the nozzle exit was fixed at uF = 25 m/s for the fuel jet and uOx = 25 m/s for the oxidizer. The objective of the current study was to investigate the effect of varying the fuel and oxidizer composition on flame stabilization, flame luminescence, flame slope, liftoff height, flame length, and furnace inside temperature in a non-premixed oxy-fuel flame. The addition of H2 and CO (carbon monoxide) to a fuel jet had the positive effect of broadening the flammable limit. The hydroxide radical chemiluminescence (OH*) intensity was related to adiabatic temperature. The flame slope was affected by global equivalence ratio and the mass flow rate between the fuel and the oxidizer. The liftoff height decreased with the increase in edge flame velocity while the flame length decreased with the increase in the Péclet number of unburned gas.

Suggested Citation

  • Oh, Jeongseog & Noh, Dongsoon, 2015. "Flame characteristics of a non-premixed oxy-fuel jet in a lab-scale furnace," Energy, Elsevier, vol. 81(C), pages 328-343.
    • Handle: RePEc:eee:energy:v:81:y:2015:i:c:p:328-343
    DOI: 10.1016/j.energy.2014.12.046
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    References listed on IDEAS

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    1. Oh, Jeongseog & Noh, Dongsoon & Ko, Changbok, 2013. "The effect of hydrogen addition on the flame behavior of a non-premixed oxy-methane jet in a lab-scale furnace," Energy, Elsevier, vol. 62(C), pages 362-369.
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    4. Oh, Jeongseog & Noh, Dongsoon & Lee, Eungyeong, 2013. "The effect of CO addition on the flame behavior of a non-premixed oxy-methane jet in a lab-scale furnace," Applied Energy, Elsevier, vol. 112(C), pages 350-357.
    5. Pereira, Caio & Wang, Gongliang & Costa, Mário, 2014. "Combustion of biodiesel in a large-scale laboratory furnace," Energy, Elsevier, vol. 74(C), pages 950-955.
    6. Cheng, Gong & He, Pi-wen & Xiao, Bo & Hu, Zhi-quan & Liu, Shi-ming & Zhang, Le-guan & Cai, Lei, 2012. "Gasification of biomass micron fuel with oxygen-enriched air: Thermogravimetric analysis and gasification in a cyclone furnace," Energy, Elsevier, vol. 43(1), pages 329-333.
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    4. Rashwan, Sherif S. & Ibrahim, Abdelmaged H. & Abou-Arab, Tharwat W. & Nemitallah, Medhat A. & Habib, Mohamed A., 2017. "Experimental study of atmospheric partially premixed oxy-combustion flames anchored over a perforated plate burner," Energy, Elsevier, vol. 122(C), pages 159-167.
    5. Maria Grazia De Giorgi & Antonio Ficarella & Donato Fontanarosa & Elisa Pescini & Antonio Suma, 2020. "Investigation of the Effects of Plasma Discharges on Methane Decomposition for Combustion Enhancement of a Lean Flame," Energies, MDPI, vol. 13(6), pages 1-19, March.
    6. Choi, Sun & Kim, Tae Young & Kim, Hee Kyung & Koo, Jaye & Kim, Jeong Soo & Kwon, Oh Chae, 2015. "Properties of inverse nonpremixed pure O2/CH4 coflow flames in a model combustor," Energy, Elsevier, vol. 93(P1), pages 1105-1115.
    7. Lazaroiu, Gheorghe & Pop, Elena & Negreanu, Gabriel & Pisa, Ionel & Mihaescu, Lucian & Bondrea, Andreya & Berbece, Viorel, 2017. "Biomass combustion with hydrogen injection for energy applications," Energy, Elsevier, vol. 127(C), pages 351-357.
    8. Joon Ahn & Hyouck-Ju Kim, 2021. "Combustion Characteristics of 0.5 MW Class Oxy-Fuel FGR (Flue Gas Recirculation) Boiler for CO 2 Capture," Energies, MDPI, vol. 14(14), pages 1-13, July.
    9. De Giorgi, Maria Grazia & Ficarella, Antonio & Sciolti, Aldebara & Pescini, Elisa & Campilongo, Stefano & Di Lecce, Giorgio, 2017. "Improvement of lean flame stability of inverse methane/air diffusion flame by using coaxial dielectric plasma discharge actuators," Energy, Elsevier, vol. 126(C), pages 689-706.
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