Torrefaction of sawdust in a fluidized bed reactor

被引：126

作者：

Li, Hui ^{[1
,2
,3
]}

Liu, Xinhua ^{[1
,2
,4
]}

Legros, Robert ^{[1
,2
,5
]}

Bi, Xiaotao T. ^{[1
,2
]}

Lim, C. J. ^{[1
,2
]}

Sokhansanj, Shahab ^{[1
,2
,6
]}

机构：

[1] Univ British Columbia, Dept Chem & Biol Engn, Vancouver, BC V6T 1Z3, Canada

[2] Univ British Columbia, Clean Energy Res Ctr, Vancouver, BC V6T 1Z3, Canada

[3] Hunan Univ, Coll Environm Sci & Engn, Key Lab Environm Biol & Pollut Control, Changsha 410082, Hunan, Peoples R China

[4] Chinese Acad Sci, Inst Proc Engn, Beijing, Peoples R China

[5] Ecole Polytech Montreal, Dept Chem Engn, Montreal, PQ, Canada

[6] Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA

来源：

BIORESOURCE TECHNOLOGY | 2012年 / 103卷 / 01期

基金：

加拿大自然科学与工程研究理事会;

关键词：

Biomass torrefaction; Sawdust; Fluidized bed; Hydrophobicity; Heating value; PYROLYSIS; COCOMBUSTION; EMISSIONS; IMPACT; WOOD;

D O I：

10.1016/j.biortech.2011.10.009

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

In the present work, stable fluidization of sawdust was achieved in a bench fluidized bed with an inclined orifice distributor without inert bed materials. A solids circulation pattern was established in the bed without the presence of slugging and channeling. The effects of treatment severity and weight loss on the solid product properties were identified. The decomposition of hemicelluloses was found to be responsible for the significant changes of chemical, physical and mechanical properties of the torrefied sawdust, including energy content, particle size distribution and moisture absorption capacity. The hydrophobicity of the torrefied sawdust was improved over the raw sawdust with a reduction of around 40 wt.% in saturated water uptake rate, and enhanced with increasing the treatment severity due to the decomposition of hemicelluloses which are rich in hydroxyl groups. The results in this study provided the basis for torrefaction in fluidized bed reactors. (C) 2011 Elsevier Ltd. All rights reserved,

引用

页码：453 / 458

页数：6

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