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Investigation of the performance of a copper based oxygen carrier for chemical looping combustion in a 120kW pilot plant for gaseous fuels

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

Abstract

A copper based oxygen carrier prepared by impregnation on a highly porous alumina support (14.2wt% active CuO) has been tested in a 120kW chemical looping pilot plant. This oxygen carrier has already been under investigation in other pilot plants up to 10kW fuel power and showed very good performance, i.e. full fuel conversion was achieved. During the experiments, natural gas has been used as fuel and variations of several process parameters like temperature, fuel power, solids inventory and solids circulation rate have been performed. The copper particles showed good performance regarding conversion of CO and H2 (almost full conversion) but only moderate conversion of CH4 (up to 80%) was achieved. The three process parameters fuel reactor temperature, solids circulation between air and fuel reactor and solids inventory have been identified as significant parameters for fuel conversion, i.e. increasing one of these parameters improves fuel conversion. Continuous analysis of the oxygen carrier particles revealed an initial decay of active CuO content caused by attrition on the external surface of the particles. The CuO content stabilized after 30h of operation at around 9wt% and no further decrease was observed.

Suggested Citation

  • Penthor, Stefan & Zerobin, Florian & Mayer, Karl & Pröll, Tobias & Hofbauer, Hermann, 2015. "Investigation of the performance of a copper based oxygen carrier for chemical looping combustion in a 120kW pilot plant for gaseous fuels," Applied Energy, Elsevier, vol. 145(C), pages 52-59.
    • Handle: RePEc:eee:appene:v:145:y:2015:i:c:p:52-59
    DOI: 10.1016/j.apenergy.2015.01.079
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    References listed on IDEAS

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    1. Imtiaz, Qasim & Broda, Marcin & Müller, Christoph R., 2014. "Structure–property relationship of co-precipitated Cu-rich, Al2O3- or MgAl2O4-stabilized oxygen carriers for chemical looping with oxygen uncoupling (CLOU)," Applied Energy, Elsevier, vol. 119(C), pages 557-565.
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    Cited by:

    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).
    2. Abad, Alberto & Adánez, Juan & Gayán, Pilar & de Diego, Luis F. & García-Labiano, Francisco & Sprachmann, Gerald, 2015. "Conceptual design of a 100MWth CLC unit for solid fuel combustion," Applied Energy, Elsevier, vol. 157(C), pages 462-474.
    3. Wang, Kun & Tian, Xin & Zhao, Haibo, 2016. "Sulfur behavior in chemical-looping combustion using a copper ore oxygen carrier," Applied Energy, Elsevier, vol. 166(C), pages 84-95.
    4. Hua, Xiuning & Fan, Yiran & Wang, Yidi & Fu, Tiantian & Fowler, G.D. & Zhao, Dongmei & Wang, Wei, 2017. "The behaviour of multiple reaction fronts during iron (III) oxide reduction in a non-steady state packed bed for chemical looping water splitting," Applied Energy, Elsevier, vol. 193(C), pages 96-111.
    5. Ridha, Firas N. & Duchesne, Marc A. & Lu, Xuao & Lu, Dennis Y. & Filippou, Dimitrios & Hughes, Robin W., 2016. "Characterization of an ilmenite ore for pressurized chemical looping combustion," Applied Energy, Elsevier, vol. 163(C), pages 323-333.
    6. Anca-Couce, A. & Hochenauer, C. & Scharler, R., 2021. "Bioenergy technologies, uses, market and future trends with Austria as a case study," Renewable and Sustainable Energy Reviews, Elsevier, vol. 135(C).
    7. Rajabi, Mahsa & Mehrpooya, Mehdi & Haibo, Zhao & Huang, Zhen, 2019. "Chemical looping technology in CHP (combined heat and power) and CCHP (combined cooling heating and power) systems: A critical review," Applied Energy, Elsevier, vol. 253(C), pages 1-1.
    8. Siriwardane, Ranjani & Riley, Jarrett & Benincosa, William & Bayham, Samuel & Bobek, Michael & Straub, Douglas & Weber, Justin, 2021. "Development of CuFeMnAlO4+δ oxygen carrier with high attrition resistance and 50-kWth methane/air chemical looping combustion tests," Applied Energy, Elsevier, vol. 286(C).

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