2004 (English)In: 2nd World Conf. on Biomass for Energy, Industry and Climate Protection, 2004, 859-862 p.Conference paper (Refereed)
This paper presents a work on biomass torrefaction performed in a laboratory unit with a reactor tube of a length of 0.5 m and an inner diameter of 0.04 m. The experiments are conducted with miscanthus, birch, salix as well as with wood and straw pellets. The reactor was heated to the selected temperature (230°C, 250°C or 280°C) and kept at the final temperature for a period of 1, 2 or 3 hours. The effect of the raw material, temperature, and residence time on the properties of the torrefied products is studied. The torrefied biomass products are characterized with elemental composition, energy content, moisture content, ash content and volatile fraction. The gaseous products are also analysed. The type of biomass influenced the product distribution. During torrefaction biomass undergoes changes in physical and chemical properties. The fixed carbon content and energy density increase with both time and temperature of torrefaction, while the yield on a weight basis decreases. The torrefied biomass has hydrophobic properties and a higher calorific value than the raw material.
Place, publisher, year, edition, pages
2004. 859-862 p.
Biomass pre-treatment, biomass densification, pyrolysis
IdentifiersURN: urn:nbn:se:kth:diva-73218OAI: oai:DiVA.org:kth-73218DiVA: diva2:488652
2nd World Conf. on Biomass for Energy, Industry and Climate Protection, 10-14 May 2004, Rome, Italy
QC 201202062012-02-062012-02-022012-02-06Bibliographically approved