Comprehensive Secondary Pyrolysis in Fluidized-bed Fast Pyrolysis of Biomass, a Fluid Dynamics Based Modelling Effort

Pelle Mellin*, Weihong Yang, Xi Yu

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

Abstract

Homogenous secondary pyrolysis is category of reactions following the primary pyrolysis and presumed important for fast pyrolysis. For the comprehensive chemistry and fluid dynamics, a probability density functional (PDF) approach is used; with a kinetic scheme comprising 134 species and 4169 reactions being implemented. With aid of acceleration techniques, most importantly Dimension Reduction, Chemistry Agglomeration and In-situ Tabulation (ISAT), a solution within reasonable time was obtained. More work is required; however, a solution for levoglucosan (C6H10O5) being fed through the inlet with fluidizing gas at 500 oc, has been obtained. 88.6% of the levoglucosan remained non-decomposed, and 19 different decomposition product species were found above 0.01% by weight. A homogenous secondary pyrolysis scheme proposed can thus be implemented in a CFD environment and acceleration techniques can speed-up the calculation for application in engineering settings.

Original languageEnglish
Pages (from-to)281-284
Number of pages4
JournalEnergy Procedia
Volume66
Early online date31 May 2015
DOIs
Publication statusPublished - 2015
Event12th International Conference on Combustion and Energy Utilisation, ICCEU 2014 - Lancaster, United Kingdom
Duration: 29 Sep 20143 Oct 2014

Bibliographical note

12th International Conference on Combustion & Energy Utilisation – 12ICCEU

© 2014 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Keywords

  • Bio oil
  • Biomass
  • CFD
  • Fast pyrolysis
  • Secondary Pyrolysis

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