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System Hydrodynamics of a 1 MW th Dual Circulating Fluidized Bed Chemical Looping Gasifier

Author

Listed:
  • Paul Dieringer

    (Institute for Energy Systems and Technology, Otto-Berndt-Str. 2, 64287 Darmstadt, Germany)

  • Falko Marx

    (Institute for Energy Systems and Technology, Otto-Berndt-Str. 2, 64287 Darmstadt, Germany)

  • Jochen Ströhle

    (Institute for Energy Systems and Technology, Otto-Berndt-Str. 2, 64287 Darmstadt, Germany)

  • Bernd Epple

    (Institute for Energy Systems and Technology, Otto-Berndt-Str. 2, 64287 Darmstadt, Germany)

Abstract

Chemical looping gasification (CLG) is a novel dual-fluidized bed gasification technology that allows for the production of high-calorific syngas from various solid feedstocks (e.g., biomass). Solid circulation between the two coupled fluidized bed reactors, serving the purpose of heat and oxygen transport, is a key parameter for the CLG technology, making system hydrodynamics the backbone of the gasification process. This study serves the purpose to provide holistic insights into the hydrodynamic behavior of the dual-fluidized bed reactor system. Here, special focus is placed on the operational principles of the setup as well as the entrainment from the circulating fluidized bed (CFB) reactors, the latter being the driving force for the solid circulation inside the entire reactor system. Using an elaborate dataset of over 130 operating periods from a cold flow model and 70 operating periods from a 1 MW th CLG pilot plant, a holistic set of ground rules for the operation of the reactor setup is presented. Moreover, a novel easily-applicable approach, solely relying on readily-available live data, is presented and validated using data from the 1 MW th chemical looping gasifier. Thereby, a straightforward estimation of solid entrainment from any CFB setup is facilitated, thus closing a crucial research gap.

Suggested Citation

  • 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.
  • Handle: RePEc:gam:jeners:v:16:y:2023:i:15:p:5630-:d:1203206
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    References listed on IDEAS

    as
    1. Bischi, Aldo & Langørgen, Øyvind & Morin, Jean-Xavier & Bakken, Jørn & Ghorbaniyan, Masoud & Bysveen, Marie & Bolland, Olav, 2012. "Hydrodynamic viability of chemical looping processes by means of cold flow model investigation," Applied Energy, Elsevier, vol. 97(C), pages 201-216.
    2. Ronald W. Breault & Justin Weber, 2021. "Saturation Carrying Capacity for Group A Particles in a Circulating Fluidized Bed," Energies, MDPI, vol. 14(10), pages 1-15, May.
    3. 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.
    4. 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.
    5. 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.
    6. 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.
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