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Energetic Assessment of SCWG Experiments with Reed Canary Grass and Ethanol Solution on Laboratory and Pilot Scale

Author

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  • Julian Dutzi

    (Institute of Catalysis Research and Technology (IKFT), Karlsruhe Institute of Technology (KIT), 76344 Eggenstein-Leopoldshafen, Germany)

  • Nikolaos Boukis

    (Institute of Catalysis Research and Technology (IKFT), Karlsruhe Institute of Technology (KIT), 76344 Eggenstein-Leopoldshafen, Germany)

  • Jörg Sauer

    (Institute of Catalysis Research and Technology (IKFT), Karlsruhe Institute of Technology (KIT), 76344 Eggenstein-Leopoldshafen, Germany)

Abstract

The energetic assessment of biomass conversion processes is important for evaluating their application potential. Process energy efficiency is often evaluated based on simulation results for processes under idealized conditions. The present work uses data from a laboratory plant to perform an evaluation of the supercritical water gasification (SCWG). For this purpose, experiments were conducted with two types of feedstock, Reed Canary Grass and ethanol. Under the present lab-plant configuration, a cold gas efficiency of up to 79% could be reached, which is comparable to the gasification of biomass in fluidized-bed gasifiers or entrained-flow gasifiers. Based on the obtained data on the produced substances and their distribution, a scale up to pilot plant size was conducted. A model was derived from the available data to energetically assess different SCWG plant sizes based on real laboratory results. This model can be transferred to other feedstocks and other process designs to approximate the optimal size for the used biomass feedstock. The importance of heat recuperation in this process is described in detail based on pilot-scale data.

Suggested Citation

  • Julian Dutzi & Nikolaos Boukis & Jörg Sauer, 2023. "Energetic Assessment of SCWG Experiments with Reed Canary Grass and Ethanol Solution on Laboratory and Pilot Scale," Energies, MDPI, vol. 16(19), pages 1-19, September.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:19:p:6848-:d:1249253
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    References listed on IDEAS

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    2. Onursal Yakaboylu & John Harinck & K. G. Smit & Wiebren De Jong, 2015. "Supercritical Water Gasification of Biomass: A Literature and Technology Overview," Energies, MDPI, vol. 8(2), pages 1-36, January.
    3. Macrì, Domenico & Catizzone, Enrico & Molino, Antonio & Migliori, Massimo, 2020. "Supercritical water gasification of biomass and agro-food residues: Energy assessment from modelling approach," Renewable Energy, Elsevier, vol. 150(C), pages 624-636.
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