IDEAS home Printed from https://ideas.repec.org/a/eee/energy/v244y2022ipas0360544221028231.html
   My bibliography  Save this article

Experimental investigation on co-firing residual char and pulverized coal under MILD combustion using low-temperature preheating air

Author

Listed:
  • Hu, Fan
  • Li, Pengfei
  • Zhang, Tai
  • Zu, Daohua
  • Cheng, Pengfei
  • Liu, Yaowei
  • Mi, Jianchun
  • Liu, Zhaohui

Abstract

Co-firing residual char and pulverized coal can apply the residual char in pulverized coal combustion equipment, whose difficulties lie in poor ignition performance and low burnout efficiency. For the first time, residual char and bituminous coal fuel blend is experimentally co-fired under moderate or intense low-oxygen dilution (MILD) conditions. MILD co-combustion is achieved with low-temperature preheating air in a pilot-scale furnace. The co-firing experiments include swirl low-NO flame combustion, MILD combustion through symmetrical secondary air jets, and MILD combustion through an asymmetrical secondary air jet. The pilot-scale tests reveal that MILD co-combustion through the asymmetrical single nozzle achieves the lowest peak temperature and the most uniform distributions of temperature, heat flux, and gas compositions in the furnace. The NO emission of MILD co-combustion through the asymmetrical air jet is decreased by 57% compared with swirl low-NO flame co-combustion. The burnout rate of MILD co-combustion through the asymmetrical air jet reaches 94%. Considering more uniform in-furnace distribution, lower NO emission, and higher burnout rate, MILD combustion through the asymmetrical single nozzle shows more obvious advantages than that through symmetrical air nozzles. Overall, the present study further widens the fuel flexibility of MILD combustion even to residual char fuel blend.

Suggested Citation

  • 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).
  • Handle: RePEc:eee:energy:v:244:y:2022:i:pa:s0360544221028231
    DOI: 10.1016/j.energy.2021.122574
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0360544221028231
    Download Restriction: Full text for ScienceDirect subscribers only

    File URL: https://libkey.io/10.1016/j.energy.2021.122574?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. Qing, Menglei & Jin, Bo & Ma, Jinchen & Zou, Xixian & Wang, Xiaoyu & Zheng, Chuguang & Zhao, Haibo, 2020. "Thermodynamic and economic performance of oxy-combustion power plants integrating chemical looping air separation," Energy, Elsevier, vol. 206(C).
    2. 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).
    3. Sorrentino, Giancarlo & Sabia, Pino & Bozza, Pio & Ragucci, Raffaele & de Joannon, Mara, 2017. "Impact of external operating parameters on the performance of a cyclonic burner with high level of internal recirculation under MILD combustion conditions," Energy, Elsevier, vol. 137(C), pages 1167-1174.
    4. Shim, Sung Hoon & Jeong, Sang Hyun & Lee, Sang-Sup, 2014. "Reduction in nitrogen oxides emissions by MILD combustion of dried sludge," Renewable Energy, Elsevier, vol. 65(C), pages 29-35.
    5. Wang, Xuebin & Zhang, Jiaye & Xu, Xinwei & Mikulčić, Hrvoje & Li, Yan & Zhou, Yuegui & Tan, Houzhang, 2020. "Numerical study of biomass Co-firing under Oxy-MILD mode," Renewable Energy, Elsevier, vol. 146(C), pages 2566-2576.
    6. Feng, Ping & Li, Xiaoyang & Wang, Jinyu & Li, Jie & Wang, Huan & He, Lu, 2021. "The mixtures of bio-oil derived from different biomass and coal/char as biofuels: Combustion characteristics," Energy, Elsevier, vol. 224(C).
    7. 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).
    8. 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.
    9. Pachler, Robert F. & Penthor, Stefan & Mayer, Karl & Hofbauer, Hermann, 2020. "Investigation of the fate of nitrogen in chemical looping combustion of gaseous fuels using two different oxygen carriers," Energy, Elsevier, vol. 195(C).
    10. Weber, Roman & Gupta, Ashwani K. & Mochida, Susumu, 2020. "High temperature air combustion (HiTAC): How it all started for applications in industrial furnaces and future prospects," Applied Energy, Elsevier, vol. 278(C).
    11. 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).
    12. Xie, Kechang & Li, Wenying & Zhao, Wei, 2010. "Coal chemical industry and its sustainable development in China," Energy, Elsevier, vol. 35(11), pages 4349-4355.
    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. Hu, Fan & Xiong, Biao & Liu, Xuhui & Huang, Xiaohong & Li, Yu & Liu, Zhaohui, 2023. "Optimized TGA-based experimental method for studying intrinsic kinetics of coal char oxidation under moderate or intense low-oxygen dilution oxy-fuel conditions," Energy, Elsevier, vol. 265(C).
    2. 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).
    3. 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).
    4. 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. 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).
    2. 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).
    3. Hu, Fan & Xiong, Biao & Liu, Xuhui & Huang, Xiaohong & Li, Yu & Liu, Zhaohui, 2023. "Optimized TGA-based experimental method for studying intrinsic kinetics of coal char oxidation under moderate or intense low-oxygen dilution oxy-fuel conditions," Energy, Elsevier, vol. 265(C).
    4. 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).
    5. 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).
    6. 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).
    7. Pramanik, Santanu & Ravikrishna, R.V., 2022. "Non premixed operation strategies for a low emission syngas fuelled reverse flow combustor," Energy, Elsevier, vol. 254(PB).
    8. 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.
    9. 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).
    10. 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).
    11. Wang, Xuebin & Zhang, Jiaye & Xu, Xinwei & Mikulčić, Hrvoje & Li, Yan & Zhou, Yuegui & Tan, Houzhang, 2020. "Numerical study of biomass Co-firing under Oxy-MILD mode," Renewable Energy, Elsevier, vol. 146(C), pages 2566-2576.
    12. Yang Guo & Liqun Peng & Jinping Tian & Denise L. Mauzerall, 2023. "Deploying green hydrogen to decarbonize China’s coal chemical sector," Nature Communications, Nature, vol. 14(1), pages 1-11, December.
    13. Serrano, José Ramón & Arnau, Francisco José & García-Cuevas, Luis Miguel & Gutiérrez, Fabio Alberto, 2022. "Thermo-economic analysis of an oxygen production plant powered by an innovative energy recovery system," Energy, Elsevier, vol. 255(C).
    14. Zhang, Jiaye & Chen, Chongming & Zhou, Ao & Rahman, Zia ur & Wang, Xuebin & Stojiljković, Dragoslava & Manić, Nebojsa & Vujanović, Milan & Tan, Houzhang, 2022. "Morphology of char particles from coal pyrolysis in a pressurized entrained flow reactor: Effects of pressure and atmosphere," Energy, Elsevier, vol. 238(PB).
    15. Shao, Tianming & Pan, Xunzhang & Li, Xiang & Zhou, Sheng & Zhang, Shu & Chen, Wenying, 2022. "China's industrial decarbonization in the context of carbon neutrality: A sub-sectoral analysis based on integrated modelling," Renewable and Sustainable Energy Reviews, Elsevier, vol. 170(C).
    16. Sorrentino, Giancarlo & Sabia, Pino & Bozza, Pio & Ragucci, Raffaele & de Joannon, Mara, 2019. "Low-NOx conversion of pure ammonia in a cyclonic burner under locally diluted and preheated conditions," Applied Energy, Elsevier, vol. 254(C).
    17. Zhao, Jun & Mangi, Hassan Nasir & Zhang, Zhenyue & Chi, Ru'an & Zhang, Haochen & Xian, Mengyu & Liu, Hong & Zuo, Haibin & Wang, Guangwei & Xu, Zhigao & Wu, Ming, 2022. "The structural characteristics and gasification performance of cokes of modified coal extracted from the mixture of low-rank coal and biomass," Energy, Elsevier, vol. 258(C).
    18. Yi, Qun & Gong, Min-Hui & Huang, Yi & Feng, Jie & Hao, Yan-Hong & Zhang, Ji-Long & Li, Wen-Ying, 2016. "Process development of coke oven gas to methanol integrated with CO2 recycle for satisfactory techno-economic performance," Energy, Elsevier, vol. 112(C), pages 618-628.
    19. Bin Xu, 2022. "How to Efficiently Reduce the Carbon Intensity of the Heavy Industry in China? Using Quantile Regression Approach," IJERPH, MDPI, vol. 19(19), pages 1-24, October.
    20. Zhou, Wenji & Zhu, Bing & Chen, Dingjiang & Zhao, Fangxian & Fei, Weiyang, 2011. "Technoeconomic assessment of China’s indirect coal liquefaction projects with different CO2 capture alternatives," Energy, Elsevier, vol. 36(11), pages 6559-6566.

    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:244:y:2022:i:pa:s0360544221028231. 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.