FIXED BED UPDRAFT GASIFICATION OF BIOMASS
2005 (English)In: 14th European Biomass Conference and Exhibition, ETA-Florence, Italy and WIP-Munich, Germany , 2005Conference paper (Refereed)
The paper presents the initial work performed in a newly built updraft gasifier. Densified woody biomass, birch, in form of pellets with a diameter of 8 mm and a length between 5 and 15 mm has been used as a raw material for batch autothermal gasification using air as an oxidation agent. The main objectives were to study the effect of the treatment conditions on the distribution of the products and the composition of product gas to establish the suitability of the gasifier to produce combustible gas with sufficiently high calorific value.The amount of the biomass used in the experiments was varied between 1 and 4 kg and the flow rate of the oxidation agent, air, was varied from 1,1 to 2,6 m3/h. Increased airflow rates favored higher temperatures, however, excessively high airflow rates resulted in fast consumption of the biomass and it also favored combustion over gasification and thus formation of lower amounts of combustible products. High airflow rates caused also higher yields of liquid products, due to the shorter residence time of the tar-rich gas in the gasifier and thus unfavorable conditions for tar cracking.
Place, publisher, year, edition, pages
ETA-Florence, Italy and WIP-Munich, Germany , 2005.
updraft gasifier, pellets, biomass conversion, fixed bed, gasification
IdentifiersURN: urn:nbn:se:kth:diva-73213ISBN: 88-89407-07-7OAI: oai:DiVA.org:kth-73213DiVA: diva2:488646
14th European Biomass Conference and Exhibition, 2005, 17-21 October, Paris, France
QC 201202062012-02-062012-02-022012-03-20Bibliographically approved