Title:
Valorisation of Residual Forest Biomass from the Pulp and Paper Industry through Gasification
Author(s):
Gomes, H.G.M.F., Pio, D.T., Tarelho, L.A.C., Matos, M.A.A., Branco, P.C.
Document(s):
Paper
Abstract:
In this work, gasification of Eucalyptus residues was performed in a 3 kWth bench-scale bubbling fluidized bed reactor, to valorize the residues generated in the pulp and paper industry. The main purpose of this work was to study the impact of steam injection during air gasification in the producer gas quality, including producer gas composition, lower heating value (LHVG), and H2:CO molar ratio. Considering the operating conditions used, the main combustible species were H2 (up to 22 %v), CO (up to 18 %v) and CH4 (up to 4 %v). The highest values for LHVG and H2:CO molar ratio were 6.5 MJ·Nm-3dry gas and 1.6 mol H2·mol-1 CO, respectively. Compared to air gasification, the addition of steam led to an increase in the concentration of H2 and CO2, accompanied by a decrease in the CO, CH4, and C2H4 concentrations, causing a slight decrease in the LHVG, and a significant increase in the H2:CO molar ratio. Therefore, the gas produced during air gasification could be used for direct burning, whilst the gas generated from air-steam gasification fulfills the requirements for bioethanol or DME synthesis and liquid fuel production by Fischer-Tropsch synthesis, concerning H2:CO molar ratio.
Keywords:
gasification, hydrogen, steam, eucalyptus residues
Topic:
Biomass Conversion for Bioenergy
Subtopic:
Gasification for Power, CHP and Polygeneration
Event:
29th European Biomass Conference and Exhibition
Session:
2CO.9.4
Pages:
484 - 489
ISBN:
978-88-89407-21-9
Paper DOI:
10.5071/29thEUBCE2021-2CO.9.4
Price:
FREE
