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Nonpremixed MILD combustion in a laboratory-scale cylindrical furnace: Occurrence and identification

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  • Cheong, Kin-Pang
  • Wang, Guochang
  • Si, Jicang
  • Mi, Jianchun

Abstract

This paper reports a comprehensive investigation into the occurrence and identification of nonpremixed MILD combustion of C3H8/air in a cylindrical furnace. The combustion mode is altered by varying burner arrangement, air-fuel nozzle separation, equivalence ratio and thermal input. Based on the experimental observations, flow analysis and chemical calculations, a new criterion is proposed to identify the occurrence of nonpremixed MILD combustion using local heat release rate (HRR) particularly for CFD simulations. Importantly, unlike the case of CH4, the nonpremixed MILD combustion of C3H8 exhibits a negative HRR (HRR−) region that departs distantly from the positive HRR (HRR+) region, due to complex pyrolysis. This is distinct from the conventional flame where the HRR− region is adjecent to the HRR+ one. The new criterion notably improves the mode identification of nonpremixed combustion operating in various furnaces at different conditions. Moreover, the current study highlights the importance of local HRR in linking the experimental observation, CFD simulation and chemical calculation of MILD combustion.

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  • Cheong, Kin-Pang & Wang, Guochang & Si, Jicang & Mi, Jianchun, 2021. "Nonpremixed MILD combustion in a laboratory-scale cylindrical furnace: Occurrence and identification," Energy, Elsevier, vol. 216(C).
    • Handle: RePEc:eee:energy:v:216:y:2021:i:c:s0360544220324026
    DOI: 10.1016/j.energy.2020.119295
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    References listed on IDEAS

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    1. Mi, Jianchun & Li, Pengfei & Zheng, Chuguang, 2011. "Impact of injection conditions on flame characteristics from a parallel multi-jet burner," Energy, Elsevier, vol. 36(11), pages 6583-6595.
    2. 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.
    3. Cheong, Kin-Pang & Wang, Guochang & Wang, Bo & Zhu, Rong & Ren, Wei & Mi, Jianchun, 2019. "Stability and emission characteristics of nonpremixed MILD combustion from a parallel-jet burner in a cylindrical furnace," Energy, Elsevier, vol. 170(C), pages 1181-1190.
    4. Wang, Feifei & Li, Pengfei & Mei, Zhenfeng & Zhang, Jianpeng & Mi, Jianchun, 2014. "Combustion of CH4/O2/N2 in a well stirred reactor," Energy, Elsevier, vol. 72(C), pages 242-253.
    5. 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.
    6. Tian, Ye & Zhou, Xiong & Ji, Xuanyu & Bai, Jisong & Yuan, Liang, 2019. "Applying moderate or intense low-oxygen dilution combustion to a co-axial-jet I-shaped recuperative radiant tube for further performance enhancement," Energy, Elsevier, vol. 171(C), pages 149-160.
    7. 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).
    8. Tu, Yaojie & Xu, Shunta & Xu, Mingchen & Liu, Hao & Yang, Wenming, 2020. "Numerical study of methane combustion under moderate or intense low-oxygen dilution regime at elevated pressure conditions up to 8 atm," Energy, Elsevier, vol. 197(C).
    9. Wang, G. & Si, J. & Xu, M. & Mi, J., 2019. "MILD combustion versus conventional bluff-body flame of a premixed CH4/air jet in hot coflow," Energy, Elsevier, vol. 187(C).
    10. Ranasinghe, Kavindu & Guan, Kai & Gardi, Alessandro & Sabatini, Roberto, 2019. "Review of advanced low-emission technologies for sustainable aviation," Energy, Elsevier, vol. 188(C).
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    Cited by:

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    5. Wang, Yi & Cheong, Kin-Pang & Wang, Junyang & Liu, Shaotong & Hu, Yong & Chyu, Minking & Mi, Jianchun, 2024. "Operational condition and furnace geometry for premixed C3H8/Air MILD combustion of high thermal-intensity and low emissions," Energy, Elsevier, vol. 288(C).
    6. Hu, Fan & Li, Pengfei & Zhang, Tai & Zu, Daohua & Cheng, Pengfei & Liu, Yaowei & Mi, Jianchun & Liu, Zhaohui, 2022. "Experimental investigation on co-firing residual char and pulverized coal under MILD combustion using low-temperature preheating air," Energy, Elsevier, vol. 244(PA).
    7. Hu, Fan & Li, Pengfei & Cheng, Pengfei & Shi, Guodong & Gao, Yan & Liu, Yaowei & Ding, Cuijiao & Yang, Chao & Liu, Zhaohui, 2023. "Comparative study on homogeneous NO-reburning in flameless and swirl flame combustion," Energy, Elsevier, vol. 283(C).

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