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

Pelle Mellin; Weihong Yang; Xi Yu

doi:10.1016/j.egypro.2015.02.057

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

Energy and Bioproducts Research Institute (EBRI)

Research output: Contribution to journal › Conference article › peer-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 language	English
Pages (from-to)	281-284
Number of pages	4
Journal	Energy Procedia
Volume	66
Early online date	31 May 2015
DOIs	https://doi.org/10.1016/j.egypro.2015.02.057
Publication status	Published - 2015
Event	12th International Conference on Combustion and Energy Utilisation, ICCEU 2014 - Lancaster, United Kingdom Duration: 29 Sept 2014 → 3 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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10.1016/j.egypro.2015.02.057

Fluidized-bed fast pyrolysis of biomass
© 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/)
Final published version, 478 KBLicence: CC BY-NC-ND 3.0

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

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.",

keywords = "Bio oil, Biomass, CFD, Fast pyrolysis, Secondary Pyrolysis",

author = "Pelle Mellin and Weihong Yang and Xi Yu",

note = "12th International Conference on Combustion & Energy Utilisation – 12ICCEU {\textcopyright} 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/); 12th International Conference on Combustion and Energy Utilisation, ICCEU 2014 ; Conference date: 29-09-2014 Through 03-10-2014",

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AU - Mellin, Pelle

AU - Yang, Weihong

AU - Yu, Xi

N1 - 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/)

PY - 2015

Y1 - 2015

N2 - 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.

AB - 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.

KW - Bio oil

KW - Biomass

KW - CFD

KW - Fast pyrolysis

KW - Secondary Pyrolysis

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SN - 1876-6102

VL - 66

SP - 281

EP - 284

JO - Energy Procedia

JF - Energy Procedia

T2 - 12th International Conference on Combustion and Energy Utilisation, ICCEU 2014

Y2 - 29 September 2014 through 3 October 2014

ER -

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

Abstract

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Keywords

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