蒸汽爆破对玉米秸秆理化特性的影响

任天宝; 徐桂转; 马孝琴; 于政道; 宋安东; 张百良

doi:10.11858/gywlxb.2012.02.017

蒸汽爆破对玉米秸秆理化特性的影响

doi: 10.11858/gywlxb.2012.02.017

1.
河南科技学院，河南新乡 453003；
2.
农业部农村可再生能源重点开放实验室，河南郑州 450002

详细信息

通讯作者:
张百良 E-mail:hauzblo@126.com

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出版历程
- 收稿日期: 2010-12-16
- 修回日期: 2011-08-19
- 发布日期: 2012-04-15

Influence of Steam Explosion on Physical-Chemical Characteristic of Corn Stalk

1.
Henan Institute of Science and Technolgy, Xinxiang 453003, China;
2.
Key Laboratory of Renewable Energy of Ministry of Agriculture, Zhengzhou 450002, China

摘要

摘要: 在木质纤维素研究领域，对其理化特性进行深入研究有利于资源化开发利用。基于热解实验、傅立叶红外光谱、X射线衍射和扫描电镜分析方法，针对玉米秸秆蒸汽爆破后理化特性的变化进行了研究。结果表明：玉米秸秆蒸汽爆破后热解区域比对照具有更宽的温度范围，最大热分解速率显著提高，反应活化能降低16.25%；木质纤维素特征官能团所对应的特征峰吸收强度差异显著；细胞壁的层次结构破碎化，纤维素结晶度降低14.57%。在此基础上构建了蒸汽爆破过程机理模型。实验结果表明：蒸汽爆破对木质纤维素类材料理化特性的改变有显著影响。
- 蒸汽爆破 /
- 玉米秸秆 /
- 理化特性 /
- 机理模型
Abstract: In the research fields of lignocellulosic materials, the physical-chemical properties are an important foundation for the resource conversion. Employing thermal gravimetric analysis, Fourier transform infrared spectroscopy, X-ray diffraction and scanning electron microscopy methods, physical-chemical properties changes of steam exploded corn stalk were studied. The results of analysis showed that pyrolysis region of steam exploded corn stalk had a wider temperature range compared with the control substance, during which the maximum self-heating rate increased significantly and activation energies (E) decreased by 16.25%. The characteristic peak absorption intensity was significantly different. The hierarchical structure of the cell wall was completely destroyed, and crystallinity of lignocellulose decreased by 14.57%. Based on this analysis, a mechanism model of steam explosion pretreatment was constructed. The results indicate that physical-chemical properties of corn stalk are significantly affected by steam explosion pretreatment.
- steam explosion /
- corn stalk /
- physical-chemical properties /
- mechanistic mode

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