Ali, Mohammed Liaket und Fradet, Quentin und Riedel, Uwe (2023) Computational Modeling of Iron-oxide Pellets Reduction Using H2 in a Fixed Bed. In: Proceedings of the 6th European Steel Technology and Application. 6th European Steel Technology and Application Days (ESTAD), 2023-06-12 - 2023-06-16, Düsseldorf, Germany. (nicht veröffentlicht)
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Kurzfassung
Full-fledged computational modeling of Direct Reduction (DR) reactors encompasses single-pellets models and the step-wise scaling-up to industrial-scale reactors. The specific focus lies here on the scale-up from a single iron ore pellet to a fixed-bed reactor model. However, challenges include the generation of synthetic packed-bed structures due to cost limitations, difficulties in generating good quality mesh for multi-pellet beds, and the cost-intensiveness of scaling up to a Computational Fluid Dynamics (CFD) environment. Furthermore, the correct modeling of transport and kinetics-related processes for a single pellet is a prerequisite for a meaningful scale-up. This has not yet been demonstrated. Therefore, in this work, the chemistry and transport data for the reduction of single iron oxide pellets with hydrogen (H2), obtained from a previously developed 1D solid porous model, will be used. The purposes of this article are (1) Proposing a CFD model that reproduces single-pellet reduction experiments with H2 for a wide range of experimental conditions in a 3D-CFD environment. (2) Computationally generating a random packing of 212 industrial pellets (0.5 kg) by applying the discrete element method (DEM) to simulate a lab-scale fixed-bed reactor. (3) Creating a 3D-domain, based on the particle position data from the previous step, and meshing the pellets and the voids among them in different refinement levels. (4) Reproducing a multipellet fixed-bed experiment with pure H2 from the literature. (5) Investigating the effects of temperature variations in the bed. In this way, the concept of scaling up to multi-pellet fixed-bed simulations with H2 are demonstrated successfully.
elib-URL des Eintrags: | https://elib.dlr.de/204608/ | ||||||||||||||||
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Dokumentart: | Konferenzbeitrag (Vortrag) | ||||||||||||||||
Titel: | Computational Modeling of Iron-oxide Pellets Reduction Using H2 in a Fixed Bed | ||||||||||||||||
Autoren: |
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Datum: | Juni 2023 | ||||||||||||||||
Erschienen in: | Proceedings of the 6th European Steel Technology and Application | ||||||||||||||||
Referierte Publikation: | Nein | ||||||||||||||||
Open Access: | Nein | ||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||
In SCOPUS: | Nein | ||||||||||||||||
In ISI Web of Science: | Nein | ||||||||||||||||
Status: | nicht veröffentlicht | ||||||||||||||||
Stichwörter: | Fixed-bed, CFD, Iron oxide pellet, Hydrogen, Direct reduction process | ||||||||||||||||
Veranstaltungstitel: | 6th European Steel Technology and Application Days (ESTAD) | ||||||||||||||||
Veranstaltungsort: | Düsseldorf, Germany | ||||||||||||||||
Veranstaltungsart: | internationale Konferenz | ||||||||||||||||
Veranstaltungsbeginn: | 12 Juni 2023 | ||||||||||||||||
Veranstaltungsende: | 16 Juni 2023 | ||||||||||||||||
HGF - Forschungsbereich: | Energie | ||||||||||||||||
HGF - Programm: | Materialien und Technologien für die Energiewende | ||||||||||||||||
HGF - Programmthema: | Thermische Hochtemperaturtechnologien | ||||||||||||||||
DLR - Schwerpunkt: | Energie | ||||||||||||||||
DLR - Forschungsgebiet: | E SP - Energiespeicher | ||||||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | E - Dekarbonisierte Industrieprozesse | ||||||||||||||||
Standort: | Cottbus , Zittau | ||||||||||||||||
Institute & Einrichtungen: | Institut für CO2-arme Industrieprozesse Institut für CO2-arme Industrieprozesse > Kohlenstoffarme Reduktionsmittel | ||||||||||||||||
Hinterlegt von: | Fradet, Dr. Quentin | ||||||||||||||||
Hinterlegt am: | 11 Jun 2024 12:46 | ||||||||||||||||
Letzte Änderung: | 13 Jun 2024 12:31 |
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