文献类型：期刊文献

英文题名：Pressurized pyrolysis of rice husk in an inert gas sweeping fixed-bed reactor with a focus on bio-oil deoxygenation

作者：Qian, Yangyang[1];Zhang, Jie[1];Wang, Jie[1]

机构：[1]E China Univ Sci & Technol, Dept Chem Engn Energy, Key Lab Coal Gasificat & Energy Chem Engn, Minist Educ, Shanghai 200237, Peoples R China

年份：2014

卷号：174

起止页码：95

外文期刊名：BIORESOURCE TECHNOLOGY

收录：;EI(收录号：20144500161311);WOS:【SCI-EXPANDED(收录号:WOS:000345014900013)】；

基金：This work is partially due to the Natural Science Foundation of China (Grand No. 21376080).

语种：英文

外文关键词：Rice husk; Pyrolysis; Pressure; Bio-oil; Deoxygenation

摘要：The pyrolysis of rice husk was conducted in a fixed-bed reactor with a sweeping nitrogen gas to investigate the effects of pressure on the pyrolytic behaviors. The release rates of main gases during the pyrolysis, the distributions of four products (char, bio-oil, water and gas), the elemental compositions of char, bio-oil and gas, and the typical compounds in bio-oil were determined. It was found that the elevation of pressure from 0.1 MPa to 5.0 MPa facilitated the dehydration and decarboxylation of bio-oil, and the bio-oils obtained under the elevated pressures had significantly less oxygen and higher calorific value than those obtained under atmospheric pressure. The former bio-oils embraced more acetic acid, phenols and guaiacols. The elevation of pressure increased the formation of CH4 partially via the gas-phase reactions. An attempt is made in this study to clarify "the pure pressure effect'' and "the combined effect with residence time''. (C) 2014 Elsevier Ltd. All rights reserved.