IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v15y2022i21p7828-d950240.html
   My bibliography  Save this article

Image Processing and Measurement of the Bubble Properties in a Bubbling Fluidized Bed Reactor

Author

Listed:
  • Rajan Jaiswal

    (Department of Process, Energy and Environmental Technology, Faculty of Technology, Natural Sciences and Maritime Sciences, Campus Porsgrunn, University of South-Eastern Norway, Kjølnes 56, 3918 Porsgrunn, Norway)

  • Britt. M. E. Moldestad

    (Department of Process, Energy and Environmental Technology, Faculty of Technology, Natural Sciences and Maritime Sciences, Campus Porsgrunn, University of South-Eastern Norway, Kjølnes 56, 3918 Porsgrunn, Norway)

  • Marianne S. Eikeland

    (Department of Process, Energy and Environmental Technology, Faculty of Technology, Natural Sciences and Maritime Sciences, Campus Porsgrunn, University of South-Eastern Norway, Kjølnes 56, 3918 Porsgrunn, Norway)

  • Henrik K. Nielsen

    (Department of engineering sciences, Faculty of engineering and science, University of Agder, Jon Lilletuns vei 9, 4879 Grimstad, Norway)

  • Rajan Kumar Thapa

    (Department of Process, Energy and Environmental Technology, Faculty of Technology, Natural Sciences and Maritime Sciences, Campus Porsgrunn, University of South-Eastern Norway, Kjølnes 56, 3918 Porsgrunn, Norway)

Abstract

The efficiency of a fluidized bed reactor depends on the bed fluid dynamic behavior, which is significantly influenced by the bubble properties. This work investigates the bubble properties of a bubbling fluidized bed reactor using computational particle fluid dynamic (CPFD) simulations and electrical capacitance tomography (ECT) measurements. The two-dimensional images (along the reactor horizontal and vertical planes) of the fluidized bed are obtained from the CPFD simulations at different operating conditions. The CPFD model was developed in a commercial CPFD software Barracuda Virtual Reactor 20.0.1. The bubble behavior and bed fluidization behavior are characterized form the bubble properties: average bubble diameter, bubble rise velocity, and bubble frequency. The bubble properties were determined by processing the extracted images with script developed in MATLAB. The CPFD simulation results are compared with experimental data (obtained from the ECT sensors) and correlations in the literature. The results from the CPFD model and experimental measurement depicted that the average bubble diameter increased with an increase in superficial gas velocities up to 4.2 U m f and decreased with a further increase in gas velocities due to the onset of large bubbles (potential slugging regime). The bubble rise velocity increased as it moved from the lower region to the bed surface. The Fourier transform of the transient solid volume fraction illustrated that multiple bubbles pass the plane with varying amplitude and frequency in the range of 1–6 Hz. Further, the bubble frequency increased with an increase in superficial gas velocity up to 2.5 U m f and decreased with a further increase in gas velocity. The CPFD model and method employed in this work can be useful for studying the influence of bubble properties on conversion efficiency of a gasification reactor operating at high temperatures.

Suggested Citation

  • Rajan Jaiswal & Britt. M. E. Moldestad & Marianne S. Eikeland & Henrik K. Nielsen & Rajan Kumar Thapa, 2022. "Image Processing and Measurement of the Bubble Properties in a Bubbling Fluidized Bed Reactor," Energies, MDPI, vol. 15(21), pages 1-18, October.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:21:p:7828-:d:950240
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/15/21/7828/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/1996-1073/15/21/7828/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Kraft, Stephan & Kirnbauer, Friedrich & Hofbauer, Hermann, 2017. "CPFD simulations of an industrial-sized dual fluidized bed steam gasification system of biomass with 8MW fuel input," Applied Energy, Elsevier, vol. 190(C), pages 408-420.
    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. Kuba, Matthias & Kraft, Stephan & Kirnbauer, Friedrich & Maierhans, Frank & Hofbauer, Hermann, 2018. "Influence of controlled handling of solid inorganic materials and design changes on the product gas quality in dual fluid bed gasification of woody biomass," Applied Energy, Elsevier, vol. 210(C), pages 230-240.
    2. Zhou, Mengmeng & Wang, Shuai & Luo, Kun & Fan, Jianren, 2022. "Three-dimensional modeling study of the oxy-fuel co-firing of coal and biomass in a bubbling fluidized bed," Energy, Elsevier, vol. 247(C).
    3. Nguyen, Nhut M. & Alobaid, Falah & May, Jan & Peters, Jens & Epple, Bernd, 2020. "Experimental study on steam gasification of torrefied woodchips in a bubbling fluidized bed reactor," Energy, Elsevier, vol. 202(C).
    4. Yang, Shiliang & Zhou, Tao & Wei, Yonggang & Hu, Jianhang & Wang, Hua, 2020. "Dynamical and thermal property of rising bubbles in the bubbling fluidized biomass gasifier with wide particle size distribution," Applied Energy, Elsevier, vol. 259(C).
    5. Karl, Jürgen & Pröll, Tobias, 2018. "Steam gasification of biomass in dual fluidized bed gasifiers: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 98(C), pages 64-78.
    6. Zhou, Tao & Yang, Shiliang & Wei, Yonggang & Hu, Jianhang & Wang, Hua, 2020. "Impact of wide particle size distribution on the gasification performance of biomass in a bubbling fluidized bed gasifier," Renewable Energy, Elsevier, vol. 148(C), pages 534-547.
    7. Parascanu, M.M. & Puig-Gamero, M. & Soreanu, G. & Valverde, J.L. & Sanchez-Silva, L., 2019. "Comparison of three Mexican biomasses valorization through combustion and gasification: Environmental and economic analysis," Energy, Elsevier, vol. 189(C).
    8. David Wünsch & Verena Sulzgruber & Markus Haider & Heimo Walter, 2020. "FP-TES: A Fluidisation-Based Particle Thermal Energy Storage, Part I: Numerical Investigations and Bulk Heat Conductivity," Energies, MDPI, vol. 13(17), pages 1-20, August.
    9. Wan, Zhanghao & Yang, Shiliang & Hu, Jianhang & Bao, Guirong & Wang, Hua, 2022. "CFD study of the reactive gas-solid hydrodynamics in a large-scale catalytic methanol-to-olefin fluidized bed reactor," Energy, Elsevier, vol. 243(C).
    10. Sun, Haoran & Bao, Guirong & Yang, Shiliang & Hu, Jianhang & Wang, Hua, 2023. "Numerical study of the biomass gasification process in an industrial-scale dual fluidized bed gasifier with 8MWth input," Renewable Energy, Elsevier, vol. 211(C), pages 681-696.
    11. Jiang, Kaijun & Du, Xiaoze & Zhang, Qiang & Kong, Yanqiang & Xu, Chao & Ju, Xing, 2021. "Review on gas-solid fluidized bed particle solar receivers applied in concentrated solar applications: Materials, configurations and methodologies," Renewable and Sustainable Energy Reviews, Elsevier, vol. 150(C).
    12. Zhang, Fengxia & Yang, Shiliang & Yang, Bin & Wang, Hua, 2022. "Mesoscale bubble dynamics in the gasifier of a 1MWth dual fluidized bed gasifier for biomass gasification," Energy, Elsevier, vol. 238(PB).
    13. Yang, Shiliang & Wang, Hua & Wei, Yonggang & Hu, Jianhang & Chew, Jia Wei, 2019. "Eulerian-Lagrangian simulation of air-steam biomass gasification in a three-dimensional bubbling fluidized gasifier," Energy, Elsevier, vol. 181(C), pages 1075-1093.
    14. Fan, Feihu & Zheng, Min & Yang, Shiliang & Wang, Hua, 2021. "Numerical study of fluid dynamics and heat transfer property of dual fluidized bed gasifier," Energy, Elsevier, vol. 234(C).
    15. Gupta, Saurabh & Choudhary, Shikhar & Kumar, Suraj & De, Santanu, 2021. "Large eddy simulation of biomass gasification in a bubbling fluidized bed based on the multiphase particle-in-cell method," Renewable Energy, Elsevier, vol. 163(C), pages 1455-1466.
    16. Bartela, Łukasz & Kotowicz, Janusz & Dubiel-Jurgaś, Klaudia, 2018. "Investment risk for biomass integrated gasification combined heat and power unit with an internal combustion engine and a Stirling engine," Energy, Elsevier, vol. 150(C), pages 601-616.
    17. Wan, Zhanghao & Hu, Jianhang & Qi, Xianjin, 2021. "Numerical analysis of hydrodynamics and thermochemical property of biomass gasification in a pilot-scale circulating fluidized bed," Energy, Elsevier, vol. 225(C).
    18. Lin, Junjie & Luo, Kun & Wang, Shuai & Sun, Liyan & Fan, Jianren, 2022. "Particle-scale study of coal-direct chemical looping combustion (CLC)," Energy, Elsevier, vol. 250(C).
    19. Wan, Zhanghao & Yang, Shiliang & Hu, Jianhang & Wang, Hua, 2023. "Catalyst-scale investigation of polydispersity effect on thermophysical properties in a commercial-scale catalytic MTO fluidized bed reactor," Energy, Elsevier, vol. 262(PA).
    20. Klimanek, Adam & Bigda, Joanna, 2018. "CFD modelling of CO2 enhanced gasification of coal in a pressurized circulating fluidized bed reactor," Energy, Elsevier, vol. 160(C), pages 710-719.

    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:15:y:2022:i:21:p:7828-:d:950240. 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.