Kinetic modeling of ex-situ biomass catalytic pyrolysis

D. Ipsakis, E. Heracleous, K. Gkinis, S. D. Stefanidis, K. G. Kalogiannis, A. A. Lappas*

*Corresponding author for this work

Research output: Contribution to journalConference article

Abstract

Core objective of this study is the development and evaluation of a kinetic modeling strategy that is able to predict product yields (based on reaction lumps) during the ex-situ biomass catalytic pyrolysis. A series of experiments was initially performed in two interconnected reactors (thermal pyrolysis and catalytic upgrading) at the pilot-scale unit of the Laboratory of Environmental Fuels & Hydrocarbons in CPERI/CERTH. Specifically, the investigation of the effect of catalyst/biomass ratio and time-on-stream provided the required data towards estimating the main kinetic parameters of both thermal pyrolysis and catalytic upgrading steps. Both kinetic schemes feature a 1 st order dependence on biomass (thermal) and organic/bio-oil (catalytic) reactant mass fraction, respectively. Catalyst deactivation was evaluated via a time-dependent empirical function that was applied at each individual lump (CO, CO 2 , H 2 O, organics/bio-oil and coke). Overall, it was identified that the applied kinetic model predicts accurately a) the reduction in the oxygen content of bio-oil with increased residence times (increase of the catalyst weight) and b) the increased coke formation with time-on-stream that deactivates the catalyst and deteriorates bio-oil quality (decrease of CO, H 2 O mass yields and consequent increase of oxygen content in the final product)

Original languageEnglish
Pages (from-to)27362-27368
Number of pages7
JournalMaterials Today: Proceedings
Volume5
Issue number14
Early online date12 Dec 2018
DOIs
Publication statusPublished - 31 Dec 2018
Event11th Panhellenic Scientific Conference on Chemical Engineering, PSCCE 2017 - Thessaloniki, Greece
Duration: 25 May 201727 May 2017

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Oils
Biomass
Pyrolysis
Carbon Monoxide
Kinetics
Coke
Catalysts
Oxygen
Catalyst deactivation
Hydrocarbons
Kinetic parameters
Hot Temperature
Experiments

Cite this

Ipsakis, D., Heracleous, E., Gkinis, K., Stefanidis, S. D., Kalogiannis, K. G., & Lappas, A. A. (2018). Kinetic modeling of ex-situ biomass catalytic pyrolysis. Materials Today: Proceedings, 5(14), 27362-27368. https://doi.org/10.1016/j.matpr.2018.09.052
Ipsakis, D. ; Heracleous, E. ; Gkinis, K. ; Stefanidis, S. D. ; Kalogiannis, K. G. ; Lappas, A. A. / Kinetic modeling of ex-situ biomass catalytic pyrolysis. In: Materials Today: Proceedings. 2018 ; Vol. 5, No. 14. pp. 27362-27368.
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Ipsakis, D, Heracleous, E, Gkinis, K, Stefanidis, SD, Kalogiannis, KG & Lappas, AA 2018, 'Kinetic modeling of ex-situ biomass catalytic pyrolysis', Materials Today: Proceedings, vol. 5, no. 14, pp. 27362-27368. https://doi.org/10.1016/j.matpr.2018.09.052

Kinetic modeling of ex-situ biomass catalytic pyrolysis. / Ipsakis, D.; Heracleous, E.; Gkinis, K.; Stefanidis, S. D.; Kalogiannis, K. G.; Lappas, A. A.

In: Materials Today: Proceedings, Vol. 5, No. 14, 31.12.2018, p. 27362-27368.

Research output: Contribution to journalConference article

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T1 - Kinetic modeling of ex-situ biomass catalytic pyrolysis

AU - Ipsakis, D.

AU - Heracleous, E.

AU - Gkinis, K.

AU - Stefanidis, S. D.

AU - Kalogiannis, K. G.

AU - Lappas, A. A.

PY - 2018/12/31

Y1 - 2018/12/31

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Ipsakis D, Heracleous E, Gkinis K, Stefanidis SD, Kalogiannis KG, Lappas AA. Kinetic modeling of ex-situ biomass catalytic pyrolysis. Materials Today: Proceedings. 2018 Dec 31;5(14):27362-27368. https://doi.org/10.1016/j.matpr.2018.09.052