IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v14y2021i17p5231-d620584.html
   My bibliography  Save this article

The Critical Capture Velocity of Coal Ash Particles Oblique Impact on a Stainless Steel Surface

Author

Listed:
  • Jun Xie

    (School of Energy and Environment, Shenyang Aerospace University, Shenyang 110136, China)

  • Haodong Ma

    (School of Energy and Environment, Shenyang Aerospace University, Shenyang 110136, China)

  • Chenxi Li

    (School of Energy and Environment, Shenyang Aerospace University, Shenyang 110136, China)

  • Shaobai Li

    (School of Energy and Environment, Shenyang Aerospace University, Shenyang 110136, China)

  • Zhengren Zhu

    (School of Energy and Environment, Shenyang Aerospace University, Shenyang 110136, China)

  • Zheng Fu

    (SPIC Northeast Electric Power Development Company Limited, Shenyang 110181, China)

Abstract

In this paper, the rebound characteristics of coal ash particles impacting on a stainless steel surface are studied experimentally with the background of ash deposition on the heating surface of the boiler. The impact processes of coal ash particles with different incident angles were recorded by high-speed digital camera technology. The evolution of the normal restitution coefficient with incident normal velocity was obtained. Three different static contact theories are used to establish the equations of motion to predict the critical capture velocity of particles. The results show that the normal restitution coefficient first increases and then decreases with the increase of incident normal velocity. The critical capture velocity of particles under the three models was predicted. It is found that the prediction results of the Brach and Dunn (BD) model for the critical capture velocity are close to the experimental results. Taking the particle of size 23 μm as an example, the maximum critical capture velocity predicted by BD model is 1.0611 m/s at 0° incident angle. The minimum value is 0.7940 m/s when the incident angle is 45°.The critical capture velocity of particles decreases with the increase of incident angle and with the increase of particle diameter.

Suggested Citation

  • Jun Xie & Haodong Ma & Chenxi Li & Shaobai Li & Zhengren Zhu & Zheng Fu, 2021. "The Critical Capture Velocity of Coal Ash Particles Oblique Impact on a Stainless Steel Surface," Energies, MDPI, vol. 14(17), pages 1-17, August.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:17:p:5231-:d:620584
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/14/17/5231/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/1996-1073/14/17/5231/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Ming Dong & Sufen Li & Jun Xie & Jian Han, 2013. "Experimental Studies on the Normal Impact of Fly Ash Particles with Planar Surfaces," Energies, MDPI, vol. 6(7), pages 1-18, July.
    Full references (including those not matched with items on IDEAS)

    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. Ming Dong & Jun Xie & Linying Bai & Sufen Li, 2014. "An Experimental Investigation on the Influence of Temperature on the Normal Impact of Fine Particles with a Plane Surface," Energies, MDPI, vol. 7(4), pages 1-16, March.
    2. Shuiguang Tong & Xiang Zhang & Zheming Tong & Yanling Wu & Ning Tang & Wei Zhong, 2019. "Online Ash Fouling Prediction for Boiler Heating Surfaces based on Wavelet Analysis and Support Vector Regression," Energies, MDPI, vol. 13(1), pages 1-20, December.
    3. Yuanhao Shi & Jie Wen & Fangshu Cui & Jingcheng Wang, 2019. "An Optimization Study on Soot-Blowing of Air Preheaters in Coal-Fired Power Plant Boilers," Energies, MDPI, vol. 12(5), pages 1-15, March.
    4. Cai, Yongtie & Tay, Kunlin & Zheng, Zhimin & Yang, Wenming & Wang, Hui & Zeng, Guang & Li, Zhiwang & Keng Boon, Siah & Subbaiah, Prabakaran, 2018. "Modeling of ash formation and deposition processes in coal and biomass fired boilers: A comprehensive review," Applied Energy, Elsevier, vol. 230(C), pages 1447-1544.
    5. Yuanhao Shi & Qiang Li & Jie Wen & Fangshu Cui & Xiaoqiong Pang & Jianfang Jia & Jianchao Zeng & Jingcheng Wang, 2019. "Soot Blowing Optimization for Frequency in Economizers to Improve Boiler Performance in Coal-Fired Power Plant," Energies, MDPI, vol. 12(15), pages 1-19, July.
    6. Ali Cemal Benim & Cansu Deniz Canal & Yakup Erhan Boke, 2021. "A Validation Study for RANS Based Modelling of Swirling Pulverized Fuel Flames," Energies, MDPI, vol. 14(21), pages 1-33, November.

    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:gam:jeners:v:14:y:2021:i:17:p:5231-:d:620584. 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: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    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.