Parameters of high temperature steam gasification of original and pulverised wood pellets
2011 (English)In: Fuel processing technology, ISSN 0378-3820, Vol. 92, no 10, 2068-2074 p.Article in journal (Refereed) Published
Experiments on gasification of chars obtained from original and pulverised wood pellets were conducted in atmosphere of water steam and nitrogen under temperatures of 800, 900 and 950 degrees C. Molar flow rates of carbon containing product gases were measured and approximated using different models with respect to extents of carbon conversion in char of the pellets. Comparison of the random pore, grain and volumetric models revealed the best applicability for approximations of the random pore model. Apparent activation energies obtained as a result of application of the models to the data from experiments with char of original pellets were higher in comparison to those of pulverised pellets, except for a grain model. Approximations under 800 degrees C showed relatively big deviations from experimental data on the beginning of char gasification. This is attributed to catalytic effects from alkali metals in the pellets.
Place, publisher, year, edition, pages
2011. Vol. 92, no 10, 2068-2074 p.
Wood pellets, Char gasification, Random pore model, Grain model, Volumetric model
IdentifiersURN: urn:nbn:se:kth:diva-39004DOI: 10.1016/j.fuproc.2011.06.009ISI: 000293932600036ScopusID: 2-s2.0-79960562564OAI: oai:DiVA.org:kth-39004DiVA: diva2:439263
FunderSwedish Research Council
Updated from "Manuscript" to "Article". QC 201503202011-09-072011-09-062015-03-24Bibliographically approved