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Numerical study on the heat transfer characteristics, flame structure, and pollutants emission in the MILD methane-air, oxygen-enriched and oxy-methane combustion

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  • Fordoei, E. Ebrahimi
  • Mazaheri, Kiumars
  • Mohammadpour, Amirreza

Abstract

Present study provides the comprehensive investigation on the different characteristics of MILD oxygen-enriched and oxy-methane combustion such as heat transfer, ignition delay, flame color, flame structure, emissions of CO and NOx (as air pollutants) by the adding of CO2 to the oxidizer. The MILD furnace of the University of Lisbon is modeled using the standard k-ε turbulence model and detailed chemical mechanism of GRI2.11. Original, extended and new optimized EDC (“EDC2020”) models are applied for the turbulence-chemistry interaction modeling. Additionally, a perfectly stirred reactor (PSR) analysis alongside with CFD simulation is used for better understanding the combustion process. The results indicate that by replacing of CO2 with N2, emission of visible light is reduced significantly and maximum temperature drops noticeably until flame reaches to nozzle shape section of furnace. Moreover, it is found that MILD oxygen-enriched and oxy-methane combustion have regarded advantages than MILD methane-air combustion involving enhancing the temperature uniformity about 10–15%, more distributed reaction zone and a significant reduction of NOx emission. CO emission shows different behavior and is unchanged under MILD oxygen-enriched regime while it increases from 11 ppm in MILD methane-air to 140 ppm in MILD oxy-methane with injection of 90% CO2 mass fraction.

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  • Fordoei, E. Ebrahimi & Mazaheri, Kiumars & Mohammadpour, Amirreza, 2021. "Numerical study on the heat transfer characteristics, flame structure, and pollutants emission in the MILD methane-air, oxygen-enriched and oxy-methane combustion," Energy, Elsevier, vol. 218(C).
    • Handle: RePEc:eee:energy:v:218:y:2021:i:c:s0360544220326311
    DOI: 10.1016/j.energy.2020.119524
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    1. Sánchez, Mario & Cadavid, Francisco & Amell, Andrés, 2013. "Experimental evaluation of a 20kW oxygen enhanced self-regenerative burner operated in flameless combustion mode," Applied Energy, Elsevier, vol. 111(C), pages 240-246.
    2. Chen, Sheng & Liu, Hao & Zheng, Chuguang, 2017. "Methane combustion in MILD oxyfuel regime: Influences of dilution atmosphere in co-flow configuration," Energy, Elsevier, vol. 121(C), pages 159-175.
    3. Sharma, Saurabh & Chowdhury, Arindrajit & Kumar, Sudarshan, 2020. "A novel air injection scheme to achieve MILD combustion in a can-type gas turbine combustor," Energy, Elsevier, vol. 194(C).
    4. Cheong, Kin-Pang & Li, Pengfei & Wang, Feifei & Mi, Jianchun, 2017. "Emissions of NO and CO from counterflow combustion of CH4 under MILD and oxyfuel conditions," Energy, Elsevier, vol. 124(C), pages 652-664.
    5. Kuang, Yucheng & He, Boshu & Tong, Wenxiao & Wang, Chaojun & Ying, Zhaoping, 2020. "Effects of oxygen concentration and inlet velocity on pulverized coal MILD combustion," Energy, Elsevier, vol. 198(C).
    6. Mardani, A. & Fazlollahi Ghomshi, A., 2016. "Numerical study of oxy-fuel MILD (moderate or intense low-oxygen dilution combustion) combustion for CH4–H2 fuel," Energy, Elsevier, vol. 99(C), pages 136-151.
    7. Li, Zhiyi & Cuoci, Alberto & Sadiki, Amsini & Parente, Alessandro, 2017. "Comprehensive numerical study of the Adelaide Jet in Hot-Coflow burner by means of RANS and detailed chemistry," Energy, Elsevier, vol. 139(C), pages 555-570.
    8. Tu, Yaojie & Xu, Mingchen & Zhou, Dezhi & Wang, Qingxiang & Yang, Wenming & Liu, Hao, 2019. "CFD and kinetic modelling study of methane MILD combustion in O2/N2, O2/CO2 and O2/H2O atmospheres," Applied Energy, Elsevier, vol. 240(C), pages 1003-1013.
    9. Jozaalizadeh, Toomaj & Toghraie, Davood, 2019. "Numerical investigation behavior of reacting flow for flameless oxidation technology of MILD combustion: Effect of fluctuating temperature of inlet co-flow," Energy, Elsevier, vol. 178(C), pages 530-537.
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    2. Fordoei, Esmaeil Ebrahimi & Boyaghchi, Fateme Ahmadi, 2022. "Influence of wall thermal conditions on the ignition, flame structure, and temperature behaviors in air-fuel, oxygen-enhanced, and oxy-fuel combustion under the MILD and high-temperature regimes," Energy, Elsevier, vol. 255(C).
    3. Shaker, Ahmad & Fordoei, E. Ebrahimi & Boyaghchi, Fateme Ahmadi, 2023. "Study of NO emission from CH4-air, oxygen-enriched, and oxy-CH4 combustion under HTC and MILD regimes: Impact of wall thermal condition in different oxidant temperature and dilution level," Energy, Elsevier, vol. 277(C).
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    5. Li, Dafang & Sun, Weifu & Luo, Zhenmin, 2023. "Methane deflagration promoted by enhancing ignition efficiency via hydrogen doping, with a view to fracturing shales," Energy, Elsevier, vol. 282(C).

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