Title:
Torrefaction of Biomass Wastes: Characterization as Potential Reducing Agents for Metallurgical Industries
Author(s):
Demey, H., Marchand, M., Grateau, M., Thiery, S., Jaricot, N., Chatroux, A., Melkior, T.
Document(s):
Paper
Poster
Abstract:
Torrefaction of low-cost poplar biomass was evaluated in this work for manufacturing bio-coal materials as reducing agents for metallurgical applications. Two different severity conditions were used in the multiple hearth furnace of the torrefaction pilot-plant CENTORRE (at an average flow rate of 45 kg h-1 in dry basis): i) 300 °C; ii) 350 °C, with a residence time of 45 min, respectively. The raw and torrefied biomasses have been characterized using thermal-gravimetric and elemental analyses (C, H, N, S, O). The kinetic profiles were evaluated using the pseudo-first order rate equation (PFORE). An increase of the carbon/oxygen ratio was obtained as a result of the torrefaction severities. The greater mass losses were evidently obtained at higher temperatures (52% at 300 °C, and 67% at 350°C). Additionally, the torrefaction process allows the storage of the feedstock for longer time; it reduces the energy consumption for grinding, and enhances the friability of the biomass for large-scale utilization in metallurgical furnaces. Abbreviations: CENTORRE: Multiple hearth furnace; PFORE: Pseudo-first order rate equation.
Keywords:
biomass, poplar, torrefaction, waste, residues
Topic:
Biomass Conversion to Intermediate Bioenergy Carriers, Sustainable Biofuels and Bio-Based Products
Subtopic:
Production of Thermally Treated Solid Fuels
Event:
29th European Biomass Conference and Exhibition
Session:
3DV.6.10
Pages:
1033 - 1037
ISBN:
978-88-89407-21-9
Paper DOI:
10.5071/29thEUBCE2021-3DV.6.10
Price:
FREE
