Fast Pyrolysis of Agricultural Wastes in a Fluidized Bed Reactor
Proceedings of the 20th International Conference on Fluidized Bed Combustion(2009)
Abstract
Solid biomass can be converted into liquid fuel through fast pyrolysis, which is convenient to be stored and transported with
potential to be used as a fossil oil substitute. In China, agricultural wastes are the main biomass materials, whose pyrolysis
process has not been researched adequately compared to forestry wastes. As the representative agricultural wastes in China,
peanut shell and maize stalk were involved in this paper and pine wood sawdust was considered for comparing the different
pyrolysis behaviors of agricultural wastes and forestry wastes. Fast pyrolysis experiments were carried out in a bench-scale
fluidized-bed reactor. The bio-oil yieldsof peanut shell and maize stalk were obviously lower than that ofpine sawdust. Compared
with pine sawdust, the char yields of peanut shell and maize stalk were higher but the heating value of uncondensable gaswas
lower. This means that the bio-oil cost will be higher for agricultural wastes if taking the conventional pyrolysis technique.
And the characteristic and component analysis resultsof bio-oil revealed that the quality of bio-oil from agricultural wastes,
especially maize stalk, was worse than that from pine wood. Therefore, it is important to take some methods to improve the
quality of bio-oilfrom agricultural wastes, which should promote the exploitation of Chinese biomass resources through fast
pyrolysis in afluidized bed reactor.
MoreTranslated text
Key words
fast pyrolysis,fluidized bed reactor,agricultural wastes
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