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Modeling the influence of potassium content and heating rate on biomass pyrolysis
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Energy Science.ORCID iD: 0000-0002-6571-3277
Department of Engineering Sciences, University of Agder.
Department of Chemical and Biochemical Engineering, Technical University of Denmark.
MIT, Department of Mechanical Engineering.
Number of Authors: 4
2017 (English)In: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, Vol. 194, 199-211 p.Article in journal (Refereed) Published
Abstract [en]

This study presents a combined kinetic and particle model that describes the effect of potassium and heating rate during the fast pyrolysis of woody and herbaceous biomass. The model calculates the mass loss rate, over a wide range of operating conditions relevant to suspension firing. The shrinking particle model considers internal and external heat transfer limitations and incorporates catalytic effects of potassium on the product yields. Modeling parameters were tuned with experimentally determined char yields at high heating rates (>200 K s−1) using a wire mesh reactor, a single particle burner, and a drop tube reactor. The experimental data demonstrated that heating rate and potassium content have significant effects on the char yield. The importance of shrinkage on the devolatilization time becomes greater with increasing particle size, but showed little influence on the char yields.

Place, publisher, year, edition, pages
2017. Vol. 194, 199-211 p.
National Category
Energy Engineering
Research subject
Energy Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-62525DOI: 10.1016/j.apenergy.2017.03.009ISI: 000399623600016Scopus ID: 2-s2.0-85015080162OAI: oai:DiVA.org:ltu-62525DiVA: diva2:1082070
Note

Validerad; 2017; Nivå 2; 2017-03-15 (andbra)

Available from: 2017-03-15 Created: 2017-03-15 Last updated: 2017-11-24Bibliographically approved

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  • Other locale
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