Comparative Study of Biomass Fast Pyrolysis and Direct Liquefaction for Bio-Oils Production: Products Yield and Characterizations
Identifieur interne : 000319 ( Main/Exploration ); précédent : 000318; suivant : 000320Comparative Study of Biomass Fast Pyrolysis and Direct Liquefaction for Bio-Oils Production: Products Yield and Characterizations
Auteurs : Nicolas Doassans-Carrère [France] ; Jean-Henry Ferrasse [France] ; Olivier Boutin [France] ; Guillain Mauviel [France] ; Jacques Lédé [France]Source :
Abstract
The objective of this work is to compare two biomass-to-oil processes: fast pyrolysis and direct liquefaction, using the same biomass (beech sawdust). Fast pyrolysis is conducted in a cyclone reactor (wall temperature between 870 and 1040 K)and direct liquefaction in a 150-mL-autoclave reactor (bulk temperature between 420 and 600 K). Three fractions of pyro-oil are obtained from fast pyrolysis (heavy oil, light oil, and aerosol), whereas two fractions of liq-oil (heavy oil and water-solubleorganics) are obtained from direct liquefaction. The comparison of both processes is based on the product yields and theircharacterization (ultimate analysis for solid and oils, oil−water content, gas and oil molecular composition, 1H NMR for oils).For both processes, there is an optimal temperature at which the oil yield is maximum. Up to 62.6 wt % of pyro-oil are obtained at 970 K with the cyclone reactor (with 25.7 wt % of gas and 11.7 wt % of solid), whereas 47.0 wt % of liq-oil was obtained at 573 K with the batch-reactor (completed by 5.5 wt % of gas and 17.8 wt % of solid). Water content mainly explains the differences (mass yield and oxygen content) between oils from fast pyrolysis and direct liquefaction. Nevertheless, there are also some differences in organic composition: levoglucosane is a main component in pyro-oil, whereas levulinic acid is a main component in liq-oil. Finally, gas formed during direct liquefaction is mainly composed of CO2 (more than 99 wt %), whereas gas from fast pyrolysis is a mixture of CO, CO2, H2, CH4, and light hydrocarbons.
Url:
DOI: 10.1021/ef500641c
Affiliations:
- France
- Grand Est, Lorraine (région), Provence-Alpes-Côte d'Azur
- Marseille, Metz, Nancy
- Université d'Aix-Marseille, Université de Lorraine
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- to stream Main, to step Curation: 000319
Le document en format XML
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<author><name sortKey="Mauviel, Guillain" sort="Mauviel, Guillain" uniqKey="Mauviel G" first="Guillain" last="Mauviel">Guillain Mauviel</name>
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<front><div type="abstract" xml:lang="en">The objective of this work is to compare two biomass-to-oil processes: fast pyrolysis and direct liquefaction, using the same biomass (beech sawdust). Fast pyrolysis is conducted in a cyclone reactor (wall temperature between 870 and 1040 K)and direct liquefaction in a 150-mL-autoclave reactor (bulk temperature between 420 and 600 K). Three fractions of pyro-oil are obtained from fast pyrolysis (heavy oil, light oil, and aerosol), whereas two fractions of liq-oil (heavy oil and water-solubleorganics) are obtained from direct liquefaction. The comparison of both processes is based on the product yields and theircharacterization (ultimate analysis for solid and oils, oil−water content, gas and oil molecular composition, 1H NMR for oils).For both processes, there is an optimal temperature at which the oil yield is maximum. Up to 62.6 wt % of pyro-oil are obtained at 970 K with the cyclone reactor (with 25.7 wt % of gas and 11.7 wt % of solid), whereas 47.0 wt % of liq-oil was obtained at 573 K with the batch-reactor (completed by 5.5 wt % of gas and 17.8 wt % of solid). Water content mainly explains the differences (mass yield and oxygen content) between oils from fast pyrolysis and direct liquefaction. Nevertheless, there are also some differences in organic composition: levoglucosane is a main component in pyro-oil, whereas levulinic acid is a main component in liq-oil. Finally, gas formed during direct liquefaction is mainly composed of CO2 (more than 99 wt %), whereas gas from fast pyrolysis is a mixture of CO, CO2, H2, CH4, and light hydrocarbons.</div>
</front>
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<tree><country name="France"><region name="Provence-Alpes-Côte d'Azur"><name sortKey="Doassans Carrere, Nicolas" sort="Doassans Carrere, Nicolas" uniqKey="Doassans Carrere N" first="Nicolas" last="Doassans-Carrère">Nicolas Doassans-Carrère</name>
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<name sortKey="Lede, Jacques" sort="Lede, Jacques" uniqKey="Lede J" first="Jacques" last="Lédé">Jacques Lédé</name>
<name sortKey="Mauviel, Guillain" sort="Mauviel, Guillain" uniqKey="Mauviel G" first="Guillain" last="Mauviel">Guillain Mauviel</name>
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