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Numerical Study on Particulate Fouling Characteristics of Flue with a Particulate Fouling Model Considering Deposition and Removal Mechanisms

Author

Listed:
  • Peng Liu

    (School of Mechanical and Power Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China)

  • Wei Liu

    (School of Mechanical and Power Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China)

  • Kexin Gong

    (School of Mechanical and Power Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China)

  • Chengjun Han

    (Dalian Huarui Heavy Industry Group Co., Ltd., Dalian 116013, China)

  • Hong Zhang

    (Dalian Huarui Heavy Industry Group Co., Ltd., Dalian 116013, China)

  • Zhucheng Sui

    (Dalian Huarui Heavy Industry Group Co., Ltd., Dalian 116013, China)

  • Renguo Hu

    (Dalian Huarui Heavy Industry Group Co., Ltd., Dalian 116013, China)

Abstract

Due to a large amount of particulate matter in industrial flue gas, the formation of particulate deposits on the flue wall will increase the instability of equipment operation, which needs to be solved urgently. In this paper, a numerical investigation on the characteristics of particulate deposition and removal in the furnace flue was carried out for waste heat and energy recovery. This research adopted a comprehensive fouling model combined with the discrete phase model (DPM) which was performed by the CFD framework and extended by user-defined functions (UDFs). Firstly, the particulate deposition and removal algorithms were proposed to develop the judgment criterion of particle fouling based on the Grant and Tabakoff particle–wall rebound model and the Johnson–Kendall–Roberts (JKR) theory. This model not only considered the particles transport, sticking, rebound, and removal behaviors, but also analyzed the deposition occurring through the multiple impactions of particles with the flue wall. Then, the influence of furnace gas velocity, particle concentration, and inflection angle α of the tee section on the particulate fouling were predicted. The results show that the furnace gas velocity, particle concentration, and flue structure have significant effects on particle fouling and distribution, and the particle fouling mainly occurs in the blind elbow section and the tee sections of the flue. In addition, the fouling mass of particles decreases with an increasing furnace gas velocity and the decrease in particle concentration. Lastly, the fouling mass of particles decreases with the increase in the inflection angle α of the tee section, and the location of particle fouling gradually transfers from the blind elbow section to the tee section.

Suggested Citation

  • Peng Liu & Wei Liu & Kexin Gong & Chengjun Han & Hong Zhang & Zhucheng Sui & Renguo Hu, 2022. "Numerical Study on Particulate Fouling Characteristics of Flue with a Particulate Fouling Model Considering Deposition and Removal Mechanisms," Energies, MDPI, vol. 15(22), pages 1-22, November.
  • Handle: RePEc:gam:jeners:v:15:y:2022:i:22:p:8708-:d:978129
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    References listed on IDEAS

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    1. Abd-Elhady, M.S. & Rindt, C.C.M. & Wijers, J.G. & van Steenhoven, A.A., 2005. "Particulate fouling in waste incinerators as influenced by the critical sticking velocity and layer porosity," Energy, Elsevier, vol. 30(8), pages 1469-1479.
    2. Ke Tian & Zicheng Tang & Jin Wang & Milan Vujanović & Min Zeng & Qiuwang Wang, 2021. "Numerical Investigations of Film Cooling and Particle Impact on the Blade Leading Edge," Energies, MDPI, vol. 14(4), pages 1-14, February.
    3. Tong, Zi-Xiang & Li, Ming-Jia & He, Ya-Ling & Tan, Hou-Zhang, 2017. "Simulation of real time particle deposition and removal processes on tubes by coupled numerical method," Applied Energy, Elsevier, vol. 185(P2), pages 2181-2193.
    4. Chen, Zhanxiu & Zheng, Dan & Wang, Jin & Chen, Lei & Sundén, Bengt, 2020. "Experimental investigation on heat transfer characteristics of various nanofluids in an indoor electric heater," Renewable Energy, Elsevier, vol. 147(P1), pages 1011-1018.
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