Fluidised bed pyrolysis of lignocellulosic biomasses and comparison of bio-oil and micropyrolyser pyrolysate by GC/MS-FID
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- 作者：Eoin Butler ; Ger Devlin ; Dietrich Meier ; Kevin McDonnell
- 关键词：Fluidised bed ; Pyrolysis ; Biomass ; Biofuel ; Secondary reactions ; Ash
- 刊名：Journal of Analytical and Applied Pyrolysis
- 出版年：2013
- 出版时间：September, 2013
- 年：2013
- 卷：103
- 期：Complete
- 页码：96-101
- 全文大小：1051 K
文摘
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 ¡ãC. 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.