Journal
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
Volume 103, Issue -, Pages 96-101Publisher
ELSEVIER
DOI: 10.1016/j.jaap.2012.10.017
Keywords
Fluidised bed; Pyrolysis; Biomass; Biofuel; Secondary reactions; Ash
Funding
- Grants-in-Aid for Scientific Research [23320167] Funding Source: KAKEN
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The fast pyrolysis of spruce (Picea abies), short rotation willow coppice (Salix alba), Miscanthus (Miscanthus x giganteus), and wheat straw (Triticum aestivum) was compared on a laboratory scale bubbling fluidized bed reactor at 460-475 degrees C. The presence of ash, ranging from 0.26 wt.% for spruce to 3.76 wt.% for wheat straw (moisture free basis) favoured decomposition of cell-wall constituents to char (spruce [11.4 wt.%] < Salix [16.2 wt.%] < Miscanthus [21.8 wt.%] < wheat straw [21.5 wt.%]) with a reduction of liquid organic product (spruce [53.8 wt.%] > Salix [45.4 wt.%] > Miscanthus [37.3 wt.%] > wheat straw [37.2 wt.%]). Bio-oils from Miscanthus and wheat straw were inhomogeneous. Differences between absolute masses of compounds determined by GC/MS-FID of the bio-oils compared with Py-GC/MS-FID suggested a greater role of secondary reactions at the fluidised bed scale, with reduced concentrations of certain lignin-derived, furan and pyran compounds. (c) 2012 Published by Elsevier B.V.
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