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Dynamic modeling of dual fluidized bed steam gasification for control design

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  • Stanger, Lukas
  • Schirrer, Alexander
  • Benedikt, Florian
  • Bartik, Alexander
  • Jankovic, Stefan
  • Müller, Stefan
  • Kozek, Martin

Abstract

Dual fluidized bed steam gasification allows the production of high-value product gas from woody biomass or biogenic residuals. Advanced control concepts such as model predictive control are promising approaches to improve the process performance and efficiency. These control techniques require dynamic models of the process that can predict the plant’s behavior as a function of the manipulated variables. This paper presents a gray-box modeling approach based on mass and energy balances to obtain a mathematical description of the temperatures inside the two reactors and the total mass flows leaving the reactors. The model incorporates data-driven components where first-principle modeling is hardly possible with reasonable effort. An artificial neural network is utilized to model the bed material circulation between the two reactors. Experiments were carried out at a 100 kW pilot plant to generate measurement data both for system identification and model validation. Simulations verify that the model achieves reliable predictions for the dual fluidized bed gasification process.

Suggested Citation

  • Stanger, Lukas & Schirrer, Alexander & Benedikt, Florian & Bartik, Alexander & Jankovic, Stefan & Müller, Stefan & Kozek, Martin, 2023. "Dynamic modeling of dual fluidized bed steam gasification for control design," Energy, Elsevier, vol. 265(C).
    • Handle: RePEc:eee:energy:v:265:y:2023:i:c:s0360544222032649
    DOI: 10.1016/j.energy.2022.126378
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    References listed on IDEAS

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    1. Mauerhofer, A.M. & Benedikt, F. & Schmid, J.C. & Fuchs, J. & Müller, S. & Hofbauer, H., 2018. "Influence of different bed material mixtures on dual fluidized bed steam gasification," Energy, Elsevier, vol. 157(C), pages 957-968.
    2. Kraft, Stephan & Kirnbauer, Friedrich & Hofbauer, Hermann, 2017. "CPFD simulations of an industrial-sized dual fluidized bed steam gasification system of biomass with 8MW fuel input," Applied Energy, Elsevier, vol. 190(C), pages 408-420.
    3. Ngo, Son Ich & Nguyen, Thanh D.B. & Lim, Young-Il & Song, Byung-Ho & Lee, Uen-Do & Choi, Young-Tai & Song, Jae-Hun, 2011. "Performance evaluation for dual circulating fluidized-bed steam gasifier of biomass using quasi-equilibrium three-stage gasification model," Applied Energy, Elsevier, vol. 88(12), pages 5208-5220.
    4. Mauerhofer, A.M. & Schmid, J.C. & Benedikt, F. & Fuchs, J. & Müller, S. & Hofbauer, H., 2019. "Dual fluidized bed steam gasification: Change of product gas quality along the reactor height," Energy, Elsevier, vol. 173(C), pages 1256-1272.
    5. Benedikt, F. & Schmid, J.C. & Fuchs, J. & Mauerhofer, A.M. & Müller, S. & Hofbauer, H., 2018. "Fuel flexible gasification with an advanced 100 kW dual fluidized bed steam gasification pilot plant," Energy, Elsevier, vol. 164(C), pages 329-343.
    6. Codina Gironès, Víctor & Moret, Stefano & Peduzzi, Emanuela & Nasato, Marco & Maréchal, François, 2017. "Optimal use of biomass in large-scale energy systems: Insights for energy policy," Energy, Elsevier, vol. 137(C), pages 789-797.
    7. Aghaalikhani, Arash & Schmid, Johannes C. & Borello, Domenico & Fuchs, Joseph & Benedikt, Florian & Hofbauer, Herman & Rispoli, Franco & Henriksen, Ulrick B. & Sárossy, Zsuzsa & Cedola, Luca, 2019. "Detailed modelling of biomass steam gasification in a dual fluidized bed gasifier with temperature variation," Renewable Energy, Elsevier, vol. 143(C), pages 703-718.
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    1. Martin Hammerschmid & Daniel Cenk Rosenfeld & Alexander Bartik & Florian Benedikt & Josef Fuchs & Stefan Müller, 2023. "Methodology for the Development of Virtual Representations within the Process Development Framework of Energy Plants: From Digital Model to Digital Predictive Twin—A Review," Energies, MDPI, vol. 16(6), pages 1-30, March.

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