Pyrolysis of pellets made with biomass and glycerol: Kinetic analysis and evolved gas analysis
| Autor: | K. Slopiecka, S Nefkens, Francesco Fantozzi, Cinzia Buratti, Gianni Bidini, Marco Barbanera, Stefan Retschitzegger, Nikola Evic, Franco Cotana, Pietro Bartocci, Andrés Anca-Couce |
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| Rok vydání: | 2017 |
| Předmět: |
Glycerol
Kinetic constants Isoconversional Order of reaction Evolved gas analysis Pellets Renewable Energy Sustainability and the Environment 020209 energy Forestry 02 engineering and technology chemistry.chemical_compound Pyrolysis chemistry Chemical engineering Biodiesel production 0202 electrical engineering electronic engineering information engineering Lignin Organic chemistry Hemicellulose Cellulose Waste Management and Disposal Agronomy and Crop Science |
| Zdroj: | Biomass and Bioenergy. 97:11-19 |
| ISSN: | 0961-9534 |
| DOI: | 10.1016/j.biombioe.2016.12.004 |
| Popis: | Glycerol is a co-product compound of biodiesel production with an interesting heating value. In this work pyrolysis kinetic parameters for a pellet made with a mass fraction of 90% sawdust and a mass fraction of 10% glycerol are derived through thermogravimetric analysis. A new parallel reaction scheme with four components (cellulose, hemicellulose, lignin and glycerol) is adopted and the kinetic triplet for each component is derived using a model fitting approach applied to this particular kind of pellet. The isoconversional method Kissinger-Akahira-Sunose is employed both to provide initial values for model fitting simulations and to check final results. Results show that activation energies and pre-exponential factors are respectively: 149.7 kJ mol−1 and 1.98*1011 s−1 for hemicellulose, 230.1 kJ mol−1 and 1.84*1017 s−1 for cellulose, 154.3 kJ mol−1 and 5.14*109 s−1 for lignin, 74.5 kJ mol−1 and 2.17*105 s−1 for glycerol with a first reaction order for all components, except for lignin (n = 2.6). Through evolved gas analysis it was demonstrated that the thermal degradation of glycerol contained in the pellet can increase hydrogen content in pyrolysis gases. |
| Databáze: | OpenAIRE |
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