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Experimental Study on the Solids Residence Time Distribution in Multiple Square-Based Spouted Beds

Author

Listed:
  • Filippo Marchelli

    (Faculty of Science and Technology, Free University of Bozen-Bolzano, 39100 Bozen-Bolzano, Italy)

  • Massimo Curti

    (Department of Civil, Chemical and Environmental Engineering, University of Genova, 16126 Genova, Italy)

  • Mattia Tognin

    (Department of Civil, Chemical and Environmental Engineering, University of Genova, 16126 Genova, Italy)

  • Giorgio Rovero

    (Department of Civil, Chemical and Environmental Engineering, University of Genova, 16126 Genova, Italy)

  • Cristina Moliner

    (Department of Civil, Chemical and Environmental Engineering, University of Genova, 16126 Genova, Italy)

  • Elisabetta Arato

    (Department of Civil, Chemical and Environmental Engineering, University of Genova, 16126 Genova, Italy)

  • Barbara Bosio

    (Department of Civil, Chemical and Environmental Engineering, University of Genova, 16126 Genova, Italy)

Abstract

The present work aims at investigating the residence time distribution (RTD) of a multiple spouted bed reactor, which will be applied for the pyrolysis and gasification of residual biomass. The unit is composed of square-based spouted beds, placed in series and at descending heights, and communicating with each other through an opening in the lateral wall. The gas is fed evenly in parallel. The experimental analysis is based on tracer experiments in cold-flow units, assessing the influence of the number of units and the bed height. The tests proved the good mixing properties of the spouted beds, which create a stable fluidization regime and do not feature dead zones. Each spouted bed can generally be well assimilated to an ideal continuous stirred tank reactor (CSTR). The RTD of the device seems adequate for the application, and also seems to be well tuneable through the selection of the bed height and number of units. Given the good similarity with ideal reactor networks, these represent a valid tool to estimate the final behavior in terms of RTD.

Suggested Citation

  • Filippo Marchelli & Massimo Curti & Mattia Tognin & Giorgio Rovero & Cristina Moliner & Elisabetta Arato & Barbara Bosio, 2020. "Experimental Study on the Solids Residence Time Distribution in Multiple Square-Based Spouted Beds," Energies, MDPI, vol. 13(18), pages 1-13, September.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:18:p:4694-:d:410924
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    References listed on IDEAS

    as
    1. Cristina Moliner & Filippo Marchelli & Barbara Bosio & Elisabetta Arato, 2017. "Modelling of Spouted and Spout-Fluid Beds: Key for Their Successful Scale Up," Energies, MDPI, vol. 10(11), pages 1-39, October.
    2. Tripathi, Manoj & Sahu, J.N. & Ganesan, P., 2016. "Effect of process parameters on production of biochar from biomass waste through pyrolysis: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 55(C), pages 467-481.
    3. Kan, Tao & Strezov, Vladimir & Evans, Tim J., 2016. "Lignocellulosic biomass pyrolysis: A review of product properties and effects of pyrolysis parameters," Renewable and Sustainable Energy Reviews, Elsevier, vol. 57(C), pages 1126-1140.
    4. Alvarez, J. & Lopez, G. & Amutio, M. & Mkhize, N.M. & Danon, B. & van der Gryp, P. & Görgens, J.F. & Bilbao, J. & Olazar, M., 2017. "Evaluation of the properties of tyre pyrolysis oils obtained in a conical spouted bed reactor," Energy, Elsevier, vol. 128(C), pages 463-474.
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    Cited by:

    1. Carlos Vargas-Salgado & Elías Hurtado-Pérez & David Alfonso-Solar & Anders Malmquist, 2021. "Empirical Design, Construction, and Experimental Test of a Small-Scale Bubbling Fluidized Bed Reactor," Sustainability, MDPI, vol. 13(3), pages 1-22, January.
    2. Filippo Marchelli & Giorgio Rovero & Massimo Curti & Elisabetta Arato & Barbara Bosio & Cristina Moliner, 2021. "An Integrated Approach to Convert Lignocellulosic and Wool Residues into Balanced Fertilisers," Energies, MDPI, vol. 14(2), pages 1-15, January.

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