Extensive Experimental Characterization with Kinetic Data for the Gasification Simulation of Solid Biofuels

Maximilian Robert Heinrich (), André Herrmann, Andy Gradel, Marco Klemm and Tobias Plessing
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Maximilian Robert Heinrich: Institute for Water and Energy Management, University of Applied Sciences Hof, 95028 Hof, Germany
André Herrmann: DBFZ Deutsches Biomasseforschungszentrum Gemeinnützige GmbH, 04347 Leipzig, Germany
Andy Gradel: Institute for Water and Energy Management, University of Applied Sciences Hof, 95028 Hof, Germany
Marco Klemm: DBFZ Deutsches Biomasseforschungszentrum Gemeinnützige GmbH, 04347 Leipzig, Germany
Tobias Plessing: Institute for Water and Energy Management, University of Applied Sciences Hof, 95028 Hof, Germany

Energies, 2023, vol. 16, issue 6, 1-31

Abstract: In this study, biomass–specific gasification data is experimentally collected for numerical simulations of fixed–bed reactors. Since biomass properties vary, it is crucial to have characteristic biomass data. Extensive data is collected to determine an appropriate description of specific biomass behavior, including basic data (e.g., heating value, size, densities, ultimate and total analysis etc.), biomass pyrolysis and heterogeneous gasification reaction data. Heterogeneous reactions were comparatively investigated in the forms of powder, particles, and a fixed–bed. The powder was investigated in depth with CO 2 , O 2 , and H 2 O (gas fraction 5–20 vol.%; temperature CO 2 , O 2 and H 2 O, respectively, at 730–790 °C, 360–405 °C, 720–780 °C), while particle reactions and fixed–bed reaction were only studied with CO 2 . A model description for a fixed–bed batch reactor was applied, modified, and compared to experimental fixed–bed batch reactor results. This study concludes that determining the appropriate characteristic particle size and parameters for the porous structure of specific biomass char is essential for simulation based on preliminary biomass characterization. Therefore, in future investigations, the description for biomass-specific differences between powder, single particles, and bulk of biomass char may be of greater focus, also taking into consideration O 2 and H 2 O.

Keywords: biomass; gasification; pyrolysis; kinetics; downdraft gasifier; spruce; char combustion; boudouard reaction; steam gasification; simulation (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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