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Extended Euler–Euler model for the simulation of a 1 MWth chemical–looping pilot plant

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  • Alobaid, Falah
  • Ohlemüller, Peter
  • Ströhle, Jochen
  • Epple, Bernd

Abstract

In chemical–looping combustion (CLC), the oxygen–carrier circulates between two interconnected fluidized beds. Experiments can provide substantial insight into the hydrodynamic behaviour of CLC, but are limited to the scale of the investigated pilot plant. Furthermore, the availability of detailed experimental information from pilot plants is difficult because of the lack of accessibility, the harsh environment and the costs of measuring devices. Computational fluid dynamics (CFD) offers a significant contribution to the direct measurements. A recent literature review shows that Euler–Euler CFD–based model has not yet been applied to chemical–looping combustion of coal. Therefore, a three–dimensional, transient simulation model for the fuel reactor of CLC has been developed. Besides the calculation of gas–solid flow, the model includes an accurate description of kinetic models for pyrolysis, heterogeneous reactions and related heat and mass transfer processes. The extended Euler–Euler/thermochemical reaction model is validated with measurements obtained from the world's second–largest CLC pilot plant (1 MWth) erected at TU Darmstadt. The numerical results suggest that the pressure drop in the fuel reactor, the exiting flue gas composition as well as the solid fuel conversion can be predicted reasonably. The validated model is of relevance for further feasibility and scale–up studies of CLC.

Suggested Citation

  • Alobaid, Falah & Ohlemüller, Peter & Ströhle, Jochen & Epple, Bernd, 2015. "Extended Euler–Euler model for the simulation of a 1 MWth chemical–looping pilot plant," Energy, Elsevier, vol. 93(P2), pages 2395-2405.
    • Handle: RePEc:eee:energy:v:93:y:2015:i:p2:p:2395-2405
    DOI: 10.1016/j.energy.2015.10.107
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    References listed on IDEAS

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    1. Lyngfelt, Anders, 2014. "Chemical-looping combustion of solid fuels – Status of development," Applied Energy, Elsevier, vol. 113(C), pages 1869-1873.
    2. Ströhle, Jochen & Orth, Matthias & Epple, Bernd, 2015. "Chemical looping combustion of hard coal in a 1MWth pilot plant using ilmenite as oxygen carrier," Applied Energy, Elsevier, vol. 157(C), pages 288-294.
    3. Ströhle, Jochen & Orth, Matthias & Epple, Bernd, 2014. "Design and operation of a 1MWth chemical looping plant," Applied Energy, Elsevier, vol. 113(C), pages 1490-1495.
    4. Stroh, Alexander & Alobaid, Falah & Busch, Jan-Peter & Ströhle, Jochen & Epple, Bernd, 2015. "3-D numerical simulation for co-firing of torrefied biomass in a pulverized-fired 1 MWth combustion chamber," Energy, Elsevier, vol. 85(C), pages 105-116.
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    Cited by:

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    2. 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.
    3. Li, Zhenwei & Xu, Hongpeng & Yang, Wenming & Wu, Shaohua, 2021. "Numerical study on the effective utilization of high sulfur petroleum coke for syngas production via chemical looping gasification," Energy, Elsevier, vol. 235(C).
    4. Lucia Blas & Patrick Dutournié & Mejdi Jeguirim & Ludovic Josien & David Chiche & Stephane Bertholin & Arnold Lambert, 2017. "Numerical Modeling of Oxygen Carrier Performances (NiO/NiAl 2 O 4 ) for Chemical-Looping Combustion," Energies, MDPI, vol. 10(7), pages 1-16, June.

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