IDEAS home Printed from https://ideas.repec.org/a/eee/energy/v216y2021ics0360544220324026.html
   My bibliography  Save this article

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

Author

Listed:
  • 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.

Suggested Citation

  • 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
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0360544220324026
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.energy.2020.119295?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    References listed on IDEAS

    as
    1. 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.
    2. 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.
    3. 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.
    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. 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).
    6. 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).
    7. 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).
    8. Ranasinghe, Kavindu & Guan, Kai & Gardi, Alessandro & Sabatini, Roberto, 2019. "Review of advanced low-emission technologies for sustainable aviation," Energy, Elsevier, vol. 188(C).
    9. 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.
    10. 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.
    Full references (including those not matched with items on IDEAS)

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Liu, Jie & Guo, Qiang & Liang, Wenkai & Feng, Xuning & Wang, Hewu, 2024. "On the NTC behaviors in explosion limits of C1 to C3 n-alkane/air mixtures," Energy, Elsevier, vol. 294(C).
    2. 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).
    3. 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).
    4. 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).
    5. Pramanik, Santanu & Ravikrishna, R.V., 2022. "Non premixed operation strategies for a low emission syngas fuelled reverse flow combustor," Energy, Elsevier, vol. 254(PB).
    6. 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).
    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).

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. 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).
    2. 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).
    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).
    4. 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.
    5. 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).
    6. 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.
    7. Wang, Feifei & Li, Pengfei & Mi, Jianchun & Wang, Jinbo, 2018. "A refined global reaction mechanism for modeling coal combustion under moderate or intense low-oxygen dilution condition," Energy, Elsevier, vol. 157(C), pages 764-777.
    8. Tian, Junjian & Liu, Xiang & Shi, Hao & Yao, Yurou & Ni, Zhanshi & Meng, Kengsheng & Hu, Peng & Lin, Qizhao, 2024. "Experimental study on MILD combustion of methane under non-preheated condition in a swirl combustion furnace," Applied Energy, Elsevier, vol. 363(C).
    9. Sayadzadeh, Mohammad Esmaiel & Samani, Majid Riahi & Toghraie, Davood & Emami, Sobhan & Eftekhari, Seyed Ali, 2023. "Numerical study on pollutant emissions characteristics and chemical and physical exergy analysis in Mild combustion," Energy, Elsevier, vol. 278(PB).
    10. Kuang, Yucheng & He, Boshu & Wang, Chaojun & Tong, Wenxiao & He, Di, 2021. "Numerical analyses of MILD and conventional combustions with the Eddy Dissipation Concept (EDC)," Energy, Elsevier, vol. 237(C).
    11. Yepes, Hernando A. & Obando, Julián E. & Amell, Andrés A., 2022. "The effect of syngas addition on flameless natural gas combustion in a regenerative furnace," Energy, Elsevier, vol. 252(C).
    12. Wang, Qiangxiang & Xie, Mengqian & Tu, Yaojie & Liu, Hao & Li, Weijie, 2022. "Numerical study of fuel-NO formation and reduction in a reversed flow MILD combustion furnace firing ammonia-doped methane," Energy, Elsevier, vol. 252(C).
    13. 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.
    14. Zhao, Zhenghong & Zhang, Zewu & Zha, Xiaojian & Gao, Ge & Li, Xiaoshan & Wu, Fan & Luo, Cong & Zhang, Liqi, 2023. "Internal association between combustion behavior and NOx emissions of pulverized coal MILD-oxy combustion affected by adding H2O," Energy, Elsevier, vol. 263(PD).
    15. Pramanik, Santanu & Ravikrishna, R.V., 2022. "Non premixed operation strategies for a low emission syngas fuelled reverse flow combustor," Energy, Elsevier, vol. 254(PB).
    16. 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).
    17. 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.
    18. Li, Bo & Shi, Baolu & Chu, Qingzhao & Zhao, Xiaoyao & Li, Junwei & Wang, Ningfei, 2019. "Characteristics of stoichiometric CH4/O2/CO2 flame up to the pure oxygen condition," Energy, Elsevier, vol. 168(C), pages 151-159.
    19. Ziya Sogut, M., 2021. "New approach for assessment of environmental effects based on entropy optimization of jet engine," Energy, Elsevier, vol. 234(C).
    20. 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.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:eee:energy:v:216:y:2021:i:c:s0360544220324026. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Catherine Liu (email available below). General contact details of provider: http://www.journals.elsevier.com/energy .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.