Zusammenfassung
Die Größe von Kohlepartikeln und deren prozessbedingte Veränderung z. B. durch Partikelzerfall haben bei der thermochemischen Konversion direkten Einfluss auf Parameter wie Aufheizgeschwindigkeit, Verweilzeit und Reaktionsgeschwindigkeit. In einem ersten Beitrag wird die Primärfragmentierung von Kohlepartikeln durch Hochtemperatureinwirkung in drei Versuchsanlagen untersucht. Dabei zeigt sich, dass der Inkohlungsgrad den größten Einfluss auf das Partikelzerfallsverhalten hat. In einem zweiten Beitrag wird der thermisch induzierte Partikelzerfall modelliert und durch numerische Simulation von Temperatur‐ und Spannungsprofilen in Kohlepartikeln während der Aufheizung dargestellt. Am Beispiel eines Hochdruck‐ Fallrohrreaktors werden in einem dritten Beitrag die verfahrenstechnischen und rohstofflichen Einflussgrößen auf die Partikel‐ und Gasverweilzeit bei der Konversion durch Pyrolyse aufgezeigt und diskutiert.
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Notes
- 1.
SPaltor, siehe Jan Friedemann Abschn. 18.1
- 2.
In der Skizze symbolisch als Federn dargestellt
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Friedemann, J. et al. (2018). Partikelverhalten. In: Krzack, S., Gutte, H., Meyer, B. (eds) Stoffliche Nutzung von Braunkohle. Springer Vieweg, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-46251-5_17
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