燃料化学学报2016，Vol.44Issue(7)：784-791,8.
锯木屑与褐煤共热解生物焦的成浆性能及其流变特性
Preparation and rheological property of the char-water slurry based on co-pyrolysis of sawdust and lignite
摘要
Abstract
An integrated experimental apparatus for pyrolysis/co-pyrolysis was employed to carry out the upgrading process of sawdust, Yunnan lignite, and their blends. The slurry-ability of the upgraded char was investigated. The results show that the slurry-ability of sawdust and Yunnan lignite is significantly improved via pyrolysis process. Bio-char and semi-coke were prepared at 500 ℃ holding 1. 5 h. The solid loadings of the resulting slurry fuels derived from sawdust and lignite were enhanced from 29 . 21% and 54 . 63% to 38 . 57% and 60. 19%, respectively. Under the same pyrolysis conditions, the slurry-ability of the char prepared from co-pyrolysis of sawdust and Yunnan lignite is apparently superior to that of the corresponding bio-char/coal char mixture with the same original mass ratio of feedstock. The prepared char-water slurries generally display pseudo-plastic behavior, i. e. , the shear press decreases with increasing shear rate. When the mass ratio of sawdust exceeds 50%, the rheological property of char-water slurry tend to be shear thickening, exhibiting strong dilatant behavior at low shear rate, which is similar to the rheological property of biochar-water slurry. The desirable slurry-ability of the char produced from co-pyrolysis could be attributed to the synergistic effect of biomass and coal, which is likely to improve aromaticity of the resulting hybrid char.关键词
锯木屑/褐煤/共热解/生物焦浆/流变特性Key words
sawdust/lignite/co-prolysis/bio-char water slurry/rheological property分类
化学化工引用本文复制引用
戴财胜,刘学鹏,戴谨泽,马淞江..锯木屑与褐煤共热解生物焦的成浆性能及其流变特性[J].燃料化学学报,2016,44(7):784-791,8.基金项目
The project was supported by the National Natural Science Foundation of China (51478182), International S&T Cooperation Program of China (2013DFG60060) and Scientific Innovation Program of Graduates in Hunan Province (CX2014B419).国家自然科学基金(51478182),国际合作专项(2013DFG60060)和湖南省研究生科研创新项目(CX2014B419)资助 （51478182）
