Zusammenfassung
Unter dem Begriff „Brenngaserzeugung“ wird die Umwandlung von Kraftstoffen, die aus sehr unterschiedlichen Kohlenwasserstoffen zusammengesetzt sein können, in ein Gasgemisch verstanden, das zu einem erheblichen Anteil aus Wasserstoff besteht und in die Anode einer Brennstoffzelle geleitet werden kann. Es werden die drei wesentlichen Komponenten der Brenngaserzeugung vorgestellt. Der autotherme Reformer wandelt den flüssigen Kraftstoff in einem katalytischen Prozess zusammen mit Wasserdampf und Luft in ein wasserstoffreiches Gasgemisch, das sogenannte Reformat, um. Der Wasser-Gas-Shift Reaktor hat die Funktion, die Konzentration an Kohlenmonoxid im Reformat deutlich zu verringern. Zu hohe Konzentrationen an Kohlenmonoxid im Eduktgasstrom der Brennstoffzelle führen zu einer adsorptiven Vergiftung der katalytisch aktiven Zentren in der Anode der Brennstoffzelle. Der katalytische Brenner hat zwei wesentliche Funktionen. Zum einen werden in seinem katalytischen Teil die brennbaren Komponenten zu Kohlendioxid und Wasser umgesetzt. Zum anderen wird im Wärmeaustauscher des katalytischen Brenners ein wesentlicher Teil des Wasserstroms, der für die autotherme Reformierung benötigt wird, verdampft und überhitzt.
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Pasel, J. (2015). Technische Entwicklung, Bau und Test von Brenngaserzeugungskomponenten. In: Peters, R. (eds) Brennstoffzellensysteme in der Luftfahrt. VDI-Buch. Springer Vieweg, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-46798-5_5
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