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The different demands of oxygen carriers on the reactor system of a CLC plant – Results of oxygen carrier testing in a 120kWth pilot plant

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  • Mayer, Karl
  • Penthor, Stefan
  • Pröll, Tobias
  • Hofbauer, Hermann

Abstract

Chemical looping combustion is now at a point beyond proof of concept. Lots of different oxygen carriers have been developed using different metal oxides, support materials and production methods. The interchangeability of oxygen carriers in a chemical looping combustion plant is investigated in a 120kWth pilot. Four different oxygen carriers are tested with focus on reactor temperature, total solids inventory, specific fuel reactor inventory, solids circulation rate and air to fuel ratio. The experimental data of this work, the data of previous work with the same pilot plant and thermodynamic data allow the identification of three groups of oxygen carriers according to the demands on the reactor system for good fuel conversion. Different reactor configurations and potentially limiting factors for each type of oxygen carrier are identified. Changing oxygen carriers of the same group in an existing chemical looping plant seems to be possible without big changes of the reactor configuration.

Suggested Citation

  • Mayer, Karl & Penthor, Stefan & Pröll, Tobias & Hofbauer, Hermann, 2015. "The different demands of oxygen carriers on the reactor system of a CLC plant – Results of oxygen carrier testing in a 120kWth pilot plant," Applied Energy, Elsevier, vol. 157(C), pages 323-329.
    • Handle: RePEc:eee:appene:v:157:y:2015:i:c:p:323-329
    DOI: 10.1016/j.apenergy.2015.07.053
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    References listed on IDEAS

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    1. Håkonsen, Silje Fosse & Grande, Carlos A. & Blom, Richard, 2014. "Rotating bed reactor for CLC: Bed characteristics dependencies on internal gas mixing," Applied Energy, Elsevier, vol. 113(C), pages 1952-1957.
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    3. Zhang, Shuai & Xiao, Rui & Zheng, Wenguang, 2014. "Comparative study between fluidized-bed and fixed-bed operation modes in pressurized chemical looping combustion of coal," Applied Energy, Elsevier, vol. 130(C), pages 181-189.
    4. Schwebel, G.L. & Filippou, D. & Hudon, G. & Tworkowski, M. & Gipperich, A. & Krumm, W., 2014. "Experimental comparison of two different ilmenites in fluidized bed and fixed bed chemical-looping combustion," Applied Energy, Elsevier, vol. 113(C), pages 1902-1908.
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    1. Pachler, Robert F. & Penthor, Stefan & Mayer, Karl & Hofbauer, Hermann, 2020. "Investigation of the fate of nitrogen in chemical looping combustion of gaseous fuels using two different oxygen carriers," Energy, Elsevier, vol. 195(C).

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