Title:
Pyrolysis of Residual Biomass to Generate Different Energy Vectors and Bio-Products
Author(s):
Vilas Boas, A.C.M., Oliveira, H.S.M., Tarelho, L.A.C., Pio, D.T., Matos, M.A.A., Branco, P.C.
Document(s):
Paper
Poster
Abstract:
Residual biomass, such as, residues from agricultural and forestry operations are considered as a promising environmentally friendly substitute resources for carbon-based fuels, chemicals, and other products. For this purpose, slow pyrolysis experiments were performed with different residual biomass, namely Acacia (Acacia longifolia), Gorse (Ulex minor), Giant reed (Arundo donax), Olive pomace, Eucalyptus sawdust and Eucalyptus bark, using a bench-scale fixed-bed reactor at distinct operating conditions, namely heating rate (2 and 10 °C/min) and peak temperature (350, 450 and 550 °C). The results shown that, the char yield was between 0.24-0.47 kg/kg dry biomass, the bio-oil yield was between 0.26-0.55 kg/kg dry biomass and the permanent gas yield (by difference) was between 0.19-0.41 kg/kg dry biomass. Increasing peak temperature and heating rate led to a decrease in the char yield and increase in the bio-oil yield. The Eucalyptus sawdust showed the highest bio-oil yield, and the olive pomace showed the highest char yield. All the analyzed chars had a carbon content above 0.50 kg/kg dry biomass. The obtain chars have a lower calorific value higher than that of the original initial biomass, which was between 24.24 and 30.50 MJ/kg dry biomass. The major gas species present in permanent gas are CO2, CO and the remaining species are CH4, H2, C2H6, C3H8, C2H4. The concentration of CO2 decreases, and that of H2 increase with temperature increase, accompanied by LHV increase of permanent gas.
Keywords:
bio-oil, pyrolysis, biochar, residual biomass, permanent gas
Topic:
Biomass Conversion to Intermediate Bioenergy Carriers, Sustainable Biofuels and Bio-Based Products
Subtopic:
Pyrolysis
Event:
29th European Biomass Conference and Exhibition
Session:
3BV.4.3
Pages:
832 - 838
ISBN:
978-88-89407-21-9
Paper DOI:
10.5071/29thEUBCE2021-3BV.4.3
Price:
FREE
