Title:
Torrefied Material: an Attractive Feed for Flash Pyrolysis?
Author(s):
Louwes, A.C., Yukananto, R., Bramer, E.A., Brem, G.
Document(s):
Paper
Poster
Abstract:
Bio-oils produced via flash pyrolysis offer interesting possibilities as renewable fuels; they are however of a lower quality than the fossil fuels they are aiming to replace, making bio-oils currently unsuitable for conventional fuel applications. A torrefaction pre-treatment could partly solve the quality issue by removing some highly oxygenated compounds from the biomass feedstock, leading to bio-oils with lower oxygen contents and increased heating values. Experiments were carried out using an entrained down flow reactor to verify these claims, using two biomass streams: ash wood and mixed waste wood. For mixed waste wood, an untreated and a torrefied stream was used; for ash wood, an untreated and two torrefied streams were used, with torrefaction temperatures of 250°C and 265°C. Furthermore, the torrefied streams were available in chips and in pellets. Preliminary results show indeed a trend of decreased O/C ratios in the Van Krevelen diagram, indicating bio-oil quality closer to fossil fuels. Pelletizing seems to have the same effect as a slightly increased torrefaction severity.
Keywords:
flash pyrolysis, torrefaction, pretreatment, pelletizing
Topic:
Biomass Conversion Technologies for Liquid and Gaseous Fuels, Chemicals and Materials
Subtopic:
Production of thermally treated solid biofuels
Event:
24th European Biomass Conference and Exhibition
Session:
3DV.2.1
Pages:
1238 - 1242
ISBN:
978-88-89407-165
Paper DOI:
10.5071/24thEUBCE2016-3DV.2.1
Price:
FREE
