摘要
为了提高油菜籽壳热解液化效率,采用响应面法分析了单位质量(1g)油菜籽壳热解所需微波功率、SiC质量和微波间歇时间的影响,并在最高产油工艺下,研究了复合吸波剂B_(4)C/SiC、TiC/SiC和WC/SiC对生物油产率和组成的影响。结果表明,各因素对产率影响显著,且微波功率与其他因素间交互作用显著;当微波功率为8W、SiC质量为0.49 g和间歇时间为28 s时,每克油菜籽壳产油率达到30.33%,较接近预测值30.38%。复合吸波剂使产率分别增至38.50%、34.62%和32.39%。添加B_(4)C提高酮类的选择性,而添加TiC使产物分布更均衡。添加B_(4)C使产物碳数向低碳方向偏移较多,并使焦炭的碳化程度和吸附性能较高。
Effects of microwave power, SiC mass and intermission time were analyzed by response surface methodology to improve pyrolysis liquefaction efficiency of rapeseed shell. Moreover, composite absorbers including B_(4)C/SiC, TiC/SiC and WC/SiC were used to study their effects on yield and bio-oil composition under the highest bio-oil production conditions. The results show that all factors have significant effects on yield,and the interactions between microwave power and other factors are obvious. When studied under microwave power 8 W, SiC mass 0.49 g and intermittent time 28 s, the bio-oil yield per gram rapeseed shell can reach 30.33%, which is close to the predicted value of 30.38%. The composite absorbers increased the yield of bio-oil to 38.50%, 34.62% and 32.39%, respectively. B_(4)C improves ketone selectivity, while TiC makes the product distribution more balanced. Adding B_(4)C makes product carbon numbers shift to low-carbon direction and increases carbonization degree and adsorption performance of the char.
作者
樊永胜
卢东升
熊永莲
蔡忆昔
赵卫东
FAN Yong-sheng;LU Dong-sheng;XIONG Yong-lian;CAI Yi-xi;ZHAO Wei-dong(School of Automotive Engineering,Yancheng Institute of Technology,Yancheng 224051,China;Graduate School of Energy Science,Kyoto University,Kyoto 6068501,Japan;School of Automotive and Traffic Engineering,Jiangsu University,Zhenjiang 212013,China)
出处
《高校化学工程学报》
EI
CAS
CSCD
北大核心
2021年第5期807-813,共7页
Journal of Chemical Engineering of Chinese Universities
基金
国家自然科学基金(51806186)
国家留学基金(201908320111)
盐城工学院引进人员校级科研资助项目(XJ201708)。
关键词
生物质
微波热解
响应面
复合吸波剂
生物油
biomass
microwave pyrolysis
response surface
composite absorber
bio-oil
