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Multi-factor numerical simulation study on spray dust suppression device in coal mining process

Author

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  • Xu, Changwei
  • Nie, Wen
  • Liu, Zhiqiang
  • Peng, Huitian
  • Yang, Shibo
  • Liu, Qiang

Abstract

In order to treat serious dust pollution problems in a fully mechanized mining face, computational fluid dynamics (CFD) was here used for numerical simulation. The atomization effects of the pressure swirling nozzles with three pore diameters of 1.6, 2.0, and 2.4 mm under the roadway airflow disturbance of 1.4 m/s and spray pressure of 1–8 MPa were simulated respectively. The results showed that the size of droplet had a power exponential relationship with the spray pressure. When the pressure exceeded 3 MPa, the change tended to be gentle; in presence of the spray pressure of 8 MPa, optimum atomization was achieved, over 90% of spray field droplets have particle sizes ranging from 20 to 100 μm, and the distribution of the size of droplet was more uniform. When the spray pressure reached 8 MPa and the diameter of nozzle pore was 2.4 mm, more than 70% of the target area's spray field concentration was above 0.04 kg/m2. After the field application by using a spray dust suppression device on the hydraulic support, the total dust and the respirable dust concentrations at the sampling points of the mining face significantly decreased, thus, the effect of dust control is obvious.

Suggested Citation

  • Xu, Changwei & Nie, Wen & Liu, Zhiqiang & Peng, Huitian & Yang, Shibo & Liu, Qiang, 2019. "Multi-factor numerical simulation study on spray dust suppression device in coal mining process," Energy, Elsevier, vol. 182(C), pages 544-558.
    • Handle: RePEc:eee:energy:v:182:y:2019:i:c:p:544-558
    DOI: 10.1016/j.energy.2019.05.201
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    Citations

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    Cited by:

    1. Wang, Gang & Xie, Shuliang & Huang, Qiming & Wang, Enmao & Wang, Shuxin, 2023. "Study on the performances of fluorescent tracers for the wetting area detection of coal seam water injection," Energy, Elsevier, vol. 263(PE).
    2. Xu, Changwei & Nie, Wen & Peng, Huitian & Zhang, Shaobo & Liu, Fei & Yi, Shixing & Cha, Xingpeng & Mwabaima, Felicie Ilele, 2023. "Numerical simulation of the dynamic wetting of coal dust by spray droplets," Energy, Elsevier, vol. 270(C).
    3. Wenchao Wang & Fayi Huang & Xianzhong Li, 2022. "Development of a portal-crane servo-spraying suppression system to reduce dust production at bulk cargo wharf," International Journal of System Assurance Engineering and Management, Springer;The Society for Reliability, Engineering Quality and Operations Management (SREQOM),India, and Division of Operation and Maintenance, Lulea University of Technology, Sweden, vol. 13(3), pages 1151-1161, June.
    4. Du, Tao & Nie, Wen & Chen, Dawei & Xiu, Zihao & Yang, Bo & Liu, Qiang & Guo, Lidian, 2020. "CFD modeling of coal dust migration in an 8.8-meter-high fully mechanized mining face," Energy, Elsevier, vol. 212(C).
    5. Hua, Yun & Nie, Wen & Liu, Qiang & Yin, Shuai & Peng, Huitian, 2020. "Effect of wind curtain on dust extraction in rock tunnel working face: CFD and field measurement analysis," Energy, Elsevier, vol. 197(C).
    6. Nie, Wen & Cha, Xingpeng & Bao, Qiu & Peng, Huitian & Xu, Changwei & Zhang, Shaobo & Zhang, Xu & Ma, Qingxin & Guo, Cheng & Yi, Shixing & Jiang, Chenwang, 2023. "Study on dust pollution suppression of mine wind-assisted spray device based on orthogonal test and CFD simulation," Energy, Elsevier, vol. 263(PB).
    7. Youngjoo Lee & Daesung Kwon & Changmin Park & Myoungjae Seo & TaeWon Seo, 2020. "Automated technique for high-pressure water-based window cleaning and accompanying parametric study," PLOS ONE, Public Library of Science, vol. 15(12), pages 1-13, December.

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