Title:
Characterization of Charcoal Production in a Brick Kiln: a Case Study in Portugal
Author(s):
Charvet, F., Ruivo, L., Pio, D.T., Gomes, H.G.M.F., Tarelho, L.A.C., Matos, A., Figueiredo da Silva, J., Neves, D.
Document(s):
Paper
Poster
Abstract:
Charcoal is a major product of biomass carbonization and has a wide range of applications especially for barbecuing. In Portugal, charcoal is mostly produced in the southern part of the country using traditional brick kilns, being a major economic activity in certain villages. However, information about this type of carbonization technology is limited, which highlights the need to study large-scale processes as a starting point for performance improvements. In this context, the present study aims to characterize the operation of an 80 m3 cylindrical brick kiln during a complete wood carbonization cycle. Relevant operating parameters have been monitored, including kiln temperature, intake airflow rate, and outlet gas composition. The results show that significant temperature variations in the range of 150 – 800°C occur in zones near the kiln door, being related to transient wood/charcoal combustion. The pyrolysis gas composition varies following the process’s temperature and its lower heating value is typically below 4MJ/Nm³. Improvements on the carbonization process are needed to increase its economic competitiveness and environmental compatibility, thus preventing the vanishing of this activity in regions where job opportunities are limited.
Keywords:
biomass, charcoal, pyrolysis, wood, carbonization, kiln
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.6.1
Pages:
1004 - 1009
ISBN:
978-88-89407-21-9
Paper DOI:
10.5071/29thEUBCE2021-3DV.6.1
Price:
FREE
