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Fuel Reactor CFD Multiscale Modelling in Syngas-Based Chemical Looping Combustion with Ilmenite

Author

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  • Vlad-Cristian Sandu

    (Faculty of Chemistry and Chemical Engineering, Babeș-Bolyai University, Arany Janos 11, RO-400028 Cluj-Napoca, Romania)

  • Ana-Maria Cormos

    (Faculty of Chemistry and Chemical Engineering, Babeș-Bolyai University, Arany Janos 11, RO-400028 Cluj-Napoca, Romania)

  • Calin-Cristian Cormos

    (Faculty of Chemistry and Chemical Engineering, Babeș-Bolyai University, Arany Janos 11, RO-400028 Cluj-Napoca, Romania)

Abstract

As global power generation is currently relying on fossil fuel-based power plants, more anthropogenic CO 2 is being released into the atmosphere. During the transition period to alternative energy sources, carbon capture and storage seems to be a promising solution. Chemical-looping combustion (CLC) is an energy conversion technology designed for combustion of fossil fuel with advantageous carbon capture capabilities. In this work, a 1D computational fluid dynamics (CFD) multiscale model was developed to study the reduction step in a syngas-based CLC system and was validated using literature data ( R = 0.99 ). In order to investigate mass transfer effects, flow rate and particle dimension studies were carried out. Sharper mass transfer rates were seen at lower flow rates and smaller granule sizes due to suppression of diffusion limitations. In addition, a 3D CFD particle model was developed to investigate in depth the reduction within an ilmenite particle, with focus on heat transfer effects. Minor differences of 1 K were seen when comparing temperature changes predicted by the two models during the slightly exothermic reduction reaction with syngas.

Suggested Citation

  • Vlad-Cristian Sandu & Ana-Maria Cormos & Calin-Cristian Cormos, 2021. "Fuel Reactor CFD Multiscale Modelling in Syngas-Based Chemical Looping Combustion with Ilmenite," Energies, MDPI, vol. 14(19), pages 1-19, September.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:19:p:6059-:d:641265
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    References listed on IDEAS

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    1. Han, Lu & Bollas, George M., 2016. "Dynamic optimization of fixed bed chemical-looping combustion processes," Energy, Elsevier, vol. 112(C), pages 1107-1119.
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