Potassium impregnation assessment of mild biomass pyrolysis by catalytic torrefaction severity factor

Silveira Edgar A., Macedo Lucélia, Commandre Jean-Michel, Candelier Kévin, Rousset Patrick. 2021. Potassium impregnation assessment of mild biomass pyrolysis by catalytic torrefaction severity factor. In : 29th European Biomass Conference and Exhibition. Scarlat N. (ed.), Grassi A. (ed.). Florence : ETA-Florence Renewable Energies, 1015-1019. (European Biomass Conference and Exhibition Proceedings) ISBN 978-88-89407-21-9 European Biomass Conference and Exhibition (EUBCE 2021). 29, s.l., Italie, 26 Avril 2021/29 Avril 2021.

Matériel d'accompagnement : 1 poster

Résumé : The increasing challenge for newenergy sources has called for a green-energy breakthrough. Concerning biomass conversion technologies, the thermochemical route appears as a feasible pathway carrying the potential for substantial innovations and process optimization. Torrefaction is a key thermal treatment for solid fuel upgrading. Different indicators of torrefaction process performance have been defined to characterize the torrefaction severity degree. Nevertheless, no study presented a calculated index that correlates catalytic effects with the operating parameters (treatment temperature and time), biomass nature and feedstock sensitivity at the same time. Previous works indicated that biomass potassium impregnation could increase thermal degradation processes by catalytically influencing the component's conversion mechanisms. Therefore, this study examines the potassium impregnation catalytic effect by applying the torrefaction catalytic effect index (TCEI) and the new catalytic torrefaction severity factor (CTSF). Previous work data of thermogravimetric analysis (TGA) of Eucalyptus clone impregnated with three different potassium carbonate concentrations (K2CO3) was applied for the catalytic severity index assessment.The calculated indexes showed a good correlation with the weight loss, providing two new indexes for the treatment assessment under catalytic effect conditions.

Mots-clés libres : Biomass, Catalytic conversion, Torrefaction, Thermal upgrading, Severity indexes

Agences de financement hors UE : Conselho Nacional de Desenvolvimento Científico e Tecnológico, Centre de Coopération Internationale en Recherche Agronomique pour le Développement, Universidade de Brasília, Brazilian Forest Products Laboratory

Auteurs et affiliations

• Silveira Edgar A., UNB [Universidade de Brasilia] (BRA)
• Macedo Lucélia, SFB (BRA)
• Commandre Jean-Michel, CIRAD-PERSYST-UPR BioWooEB (FRA) ORCID: 0000-0001-9094-7879
• Candelier Kévin, CIRAD-PERSYST-UPR BioWooEB (FRA) ORCID: 0000-0002-9328-8511
• Rousset Patrick, CIRAD-PERSYST-UPR BioWooEB (FRA) ORCID: 0000-0002-6956-7465

Source : Cirad-Agritrop (https://agritrop.cirad.fr/612857/)

Métriques

[ Page générée et mise en cache le 2025-09-22 ]