4.2 Article

Hydrothermal Carbonization: 3. Kinetic Model

期刊

CHEMIE INGENIEUR TECHNIK
卷 87, 期 4, 页码 449-456

出版社

WILEY-V C H VERLAG GMBH
DOI: 10.1002/cite.201400116

关键词

Biomasse; Hydrolyse; Karbonisierung; Lignin; Carbonization; Biomass; Hydrolysis; Lignin

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Basierend auf Experimenten im Mikroautoklaven wurde ein einfaches kinetisches Modell fur die hydrothermale Karbonsierung entwickelt. Dieses Modell wurde zur Beschreibung der Umsetzung von zehn verschiedenen Biomassen mit unterschiedlichem Ligningehalt und mit guter ubereinstimmung zu gemessenen Daten eingesetzt. Dabei wurde angenommen, dass die Anwesenheit von Lignin den ersten Reaktionsschritt, die Hydrolyse von Biomasse, verlangsamt. Ein direkter Zusammenhang zwischen dem Ligningehalt und der geringeren Reaktionsgeschwindigkeit bei ligninhaltigen Biomassen konnte allerdings nicht hergestellt werden. Based on experiments in the micro autoclave, a simple kinetic model for hydrothermal carbonization was developed. This model was then applied to describe the transformation of ten different biomasses with varying lignin content and showed good correspondence to measured data. It was assumed that the presence of lignin slows down the hydrolysis of biomass as first reaction step, but a direct correlation between the lignin content and the low reaction speed of lignin containing biomasses was not confirmed.

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