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Development of a process model for coal chemical looping combustion and validation against 100kWth tests

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

Abstract

Chemical looping combustion is a very efficient CO2 capture technology utilizing two interconnected circulating fluidized beds. Despite promising results in basic research on chemical looping combustion at laboratory scale, the technical process has to be further developed, especially toward a potential industrial application. In order to accelerate this development, it is essential to simulate chemical looping combustion with process simulation software. In this study a process simulation model is validated using experimental data obtained from a 100kWth pilot plant at Chalmers University of Technology (Sweden). The targeted configuration of the process is created and all substances and boundary conditions are defined. The solids distribution and also the chemical conversion of gases and solids are simulated by a user defined model. This model is based on mathematical equations for fluidized beds and kinetic data of the chemical reactions is taken into consideration. The one-dimensional solids distribution is validated with experimental measurements using empirical correlations according to Kunii and Levenspiel. Conversions in the dense and the lean zone of the fluidized bed are determined using kinetic data from literature. The elaborated model is validated against the concentrations of gases at the fuel reactor exit. The calculated results are in very good agreement with experimental data. Sensitivity analyses are performed to optimize the operational conditions of the pilot plant.

Suggested Citation

  • Ohlemüller, Peter & Alobaid, Falah & Gunnarsson, Adrian & Ströhle, Jochen & Epple, Bernd, 2015. "Development of a process model for coal chemical looping combustion and validation against 100kWth tests," Applied Energy, Elsevier, vol. 157(C), pages 433-448.
    • Handle: RePEc:eee:appene:v:157:y:2015:i:c:p:433-448
    DOI: 10.1016/j.apenergy.2015.05.088
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    References listed on IDEAS

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    1. Lee, Jong Min & Kim, Yong Jeon & Lee, Woon Jae & Kim, Sang Done, 1998. "Coal-gasification kinetics derived from pyrolysis in a fluidized-bed reactor," Energy, Elsevier, vol. 23(6), pages 475-488.
    2. 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.
    3. Thon, Andreas & Kramp, Marvin & Hartge, Ernst-Ulrich & Heinrich, Stefan & Werther, Joachim, 2014. "Operational experience with a system of coupled fluidized beds for chemical looping combustion of solid fuels using ilmenite as oxygen carrier," Applied Energy, Elsevier, vol. 118(C), pages 309-317.
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    Cited by:

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    2. Paul Dieringer & Falko Marx & Jochen Ströhle & Bernd Epple, 2023. "System Hydrodynamics of a 1 MW th Dual Circulating Fluidized Bed Chemical Looping Gasifier," Energies, MDPI, vol. 16(15), pages 1-46, July.
    3. Yubin Lin & Qinhui Wang & Chao Ye & Yao Zhu & Haojie Fan, 2023. "Experimental Research on the Gas-Solid Flow Characteristics in Large-Scale Dual Fluidized Bed Reactor," Energies, MDPI, vol. 16(21), pages 1-19, October.
    4. Fan, Junming & Zhu, Lin & Hong, Hui & Jiang, Qiongqiong & Jin, Hongguang, 2017. "A thermodynamic and environmental performance of in-situ gasification of chemical looping combustion for power generation using ilmenite with different coals and comparison with other coal-driven powe," Energy, Elsevier, vol. 119(C), pages 1171-1180.
    5. 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.
    6. Falko Marx & Paul Dieringer & Jochen Ströhle & Bernd Epple, 2021. "Design of a 1 MW th Pilot Plant for Chemical Looping Gasification of Biogenic Residues," Energies, MDPI, vol. 14(9), pages 1-25, April.
    7. Siriwardane, Ranjani & Benincosa, William & Riley, Jarrett & Tian, Hanjing & Richards, George, 2016. "Investigation of reactions in a fluidized bed reactor during chemical looping combustion of coal/steam with copper oxide-iron oxide-alumina oxygen carrier," Applied Energy, Elsevier, vol. 183(C), pages 1550-1564.
    8. 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.
    9. Schnellmann, Matthias A. & Donat, Felix & Scott, Stuart A. & Williams, Gareth & Dennis, John S., 2018. "The effect of different particle residence time distributions on the chemical looping combustion process," Applied Energy, Elsevier, vol. 216(C), pages 358-366.

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