IDEAS home Printed from https://ideas.repec.org/a/eee/energy/v238y2022ipbs0360544221020454.html
   My bibliography  Save this article

Effects of coal particle size on the two-phase flow and slagging performance in a swirl burner

Author

Listed:
  • Fang, Neng
  • Zhang, Pan
  • Wang, Weiliang
  • Wang, Qian
  • Lyu, Junfu
  • Zhang, Hai
  • Yue, Guangxi

Abstract

Swirl burner is widely used in coal-fired boilers. Coal particle size is an important factor affecting the two-phase flow as well as the combustion performances of a swirl burner. A bench-scale experiment with CFD simulation was conducted with full burner complexity. The results show that asymmetry of the particle phase is gradually weakened as the particle size increases, opposite to the variation trend of the continuous flow field in a hot state. The asymmetry of the particle phase is much more affected by the asymmetry of the secondary air jet flow than that of the primary air jet flow. As the particle size increases within a certain range, the combustibility of pulverized coal decreases, which enhances the asymmetry of the continuous flow field. When the particle size increases more than 50 μm, an increase in the concentration of incomplete combustion particles in the side recirculation zone around the burner occurs, intensifying the tendency of slagging. Thus, controlling the pulverized coal particle size below 50 μm is a considerable choice to improve combustion efficiency and avoid slagging.

Suggested Citation

  • Fang, Neng & Zhang, Pan & Wang, Weiliang & Wang, Qian & Lyu, Junfu & Zhang, Hai & Yue, Guangxi, 2022. "Effects of coal particle size on the two-phase flow and slagging performance in a swirl burner," Energy, Elsevier, vol. 238(PB).
    • Handle: RePEc:eee:energy:v:238:y:2022:i:pb:s0360544221020454
    DOI: 10.1016/j.energy.2021.121797
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0360544221020454
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.energy.2021.121797?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. Fang, Neng & Li, Zhengqi & Liu, Shuxuan & Xie, Cheng & Zeng, Lingyan & Chen, Zhichao, 2021. "Experimental air/particle flow characteristics of an 80,000 Nm3/h fly ash entrained-flow gasifier with different multi-burner arrangements," Energy, Elsevier, vol. 215(PB).
    2. Đugum, Adnan & Hanjalić, Kemal, 2019. "Numerical simulation of coal-air mixture flow in a real double-swirl burner and implications on combustion anomalies in a utility boiler," Energy, Elsevier, vol. 170(C), pages 942-953.
    3. Wang, Qingxiang & Chen, Zhichao & Han, Hui & Tu, Yaojie & Liu, Guangkui & Zeng, Lingyan & Li, Zhengqi, 2019. "Detailed gas/particle flow characteristics of an improved down-fired boiler with respect to a critical factor affecting coal burnout: Vent-air inclination angle," Energy, Elsevier, vol. 182(C), pages 570-584.
    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. Yuan, Zhenhua & Chen, Zhichao & Bian, Liguo & Li, Zhengqi, 2023. "Influence of over-fired air location on gas-particle flow characteristics within a coal-fired industrial boiler under radial air staging," Energy, Elsevier, vol. 283(C).
    2. Yuan, Zhenhua & Chen, Zhichao & Wu, Xiaolan & Zhang, Ning & Bian, Liguo & Qiao, Yanyu & Li, Jiawei & Li, Zhengqi, 2022. "An innovative low-NOx combustion technology for industrial pulverized coal boiler: Gas-particle flow characteristics with different radial-air-staged levels," Energy, Elsevier, vol. 260(C).
    3. Yuan, Zhenhua & Chen, Zhichao & Bian, Liguo & Wu, Xiaolan & Zhang, Bo & Li, Jiawei & Qiao, Yanyu & Li, Zhengqi, 2023. "Influence of blade angle in the outer secondary air for swirl burner on the flow, combustion, and slagging characteristics in the pre-combustion chamber under the air-staged condition," Energy, Elsevier, vol. 275(C).
    4. Varbanov, Petar Sabev & Wang, Bohong & Ocłoń, Paweł & Radziszewska-Zielina, Elżbieta & Ma, Ting & Klemeš, Jiří Jaromír & Jia, Xuexiu, 2023. "Efficiency measures for energy supply and use aiming for a clean circular economy," 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. Li, Zhengqi & Liu, Zheng & Huang, Haolin & Du, He & Chen, Zhichao, 2024. "The effects of key parameters on the gas/particle flows characteristics in the furnace of a Foster Wheeler down-fired boiler retrofitted with novel low-load stable combustion technology," Energy, Elsevier, vol. 288(C).
    2. Yan, Rong & Chen, Zhichao & Zheng, Yu & Yuan, Linxuan & Zeng, Lingyan & Li, Zhengqi, 2021. "Influence of inner and outer secondary air ratio on flow and combustion characteristics of a swirl burner in a 29 MW pulverized coal boiler," Energy, Elsevier, vol. 237(C).
    3. Jin, Donghao & Yan, Jingwen & Liu, Xin & Zhang, Chaoqun & Wang, Heyang, 2023. "Prediction of tube temperature distribution of boiler platen superheater by a coupled combustion and hydrodynamic model," Energy, Elsevier, vol. 279(C).
    4. Nie, Wen & Jiang, Chenwang & Liu, Qiang & Guo, Lidian & Hua, Yun & Zhang, Haonan & Jiang, Bingyou & Zhu, Zilian, 2024. "Study of highly efficient control and dust removal system for double-tunnel boring processes in coal mines," Energy, Elsevier, vol. 289(C).
    5. Fang, Neng & Li, Zhengqi & Xie, Cheng & Liu, Shuxuan & Lu, Yue & Zeng, Lingyan & Chen, Zhichao, 2021. "Influence of the multi-burner bias angle on the air/particle flow characteristics in an improved fly ash entrained-flow gasifier," Energy, Elsevier, vol. 234(C).
    6. Laubscher, Ryno & Rousseau, Pieter, 2020. "Numerical investigation on the impact of variable particle radiation properties on the heat transfer in high ash pulverized coal boiler through co-simulation," Energy, Elsevier, vol. 195(C).
    7. Lu, Yue & Li, Zhengqi & Jiang, Guangfei & Huang, Chunchao & Chen, Zhichao, 2024. "Study on mixing performance of atmospheric entrained flow gasification burner using fine ash as feedstock," Energy, Elsevier, vol. 292(C).
    8. Choi, Minsung & Park, Yeseul & Li, Xinzhuo & Kim, Kibeom & Sung, Yonmo & Hwang, Taegam & Choi, Gyungmin, 2021. "Numerical evaluation of pulverized coal swirling flames and NOx emissions in a coal-fired boiler: Effects of co- and counter-swirling flames and coal injection modes," Energy, Elsevier, vol. 217(C).
    9. Li, Xiaoguang & Zeng, Lingyan & Zhang, Ning & Zhang, Xin & Song, Minhang & Chen, Zhichao & Li, Zhengqi, 2022. "Effects of the gas/particle flow and combustion characteristics on water-wall temperature and energy conversion in a supercritical down-fired boiler at different secondary-air distributions," Energy, Elsevier, vol. 238(PC).

    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:238:y:2022:i:pb:s0360544221020454. 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.