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《Journal of Chemical Engineering of Chinese Universities》 2001-05
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Studies on the Mechanism of Poplar-wood Flash Pyrolysis Process

GUO Yan, WANG Yao, WEI Fei, JIN Yong (Department of Chemical Engineering, Tsinghua University, Beijing 100084, China)  
The mechanism of poplar-wood flash pyrolysis was studied by pyrolysis gas chromatography that is an important analytical method in the modern analytical chemistry field. The fundamental pyrolysis pathways of poplar-wood flash pyrolysis are recognized by systematically investigating the pyrolysis product distribution of poplar-wood at atmospheric pressure, temperature ranging from 400oC to 800oC, the volatile residence time (0.6~4s) and several heating rates. The pyrolysis product distribution indicates that poplar-wood flash pyrolysis consists of two competing primary reactions, one yielding char, and the other condensable tar, followed by a secondary tar cracking reaction. Which reactions will be dominant depends on the pyrolysis condition such as pyrolysis temperature, volatile residence time and heating rate. The results of material balance shows that the study means and analytical method are feasible.
【CateGory Index】: TQ351
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