基于TG-FTIR分析的柳桉热解特性研究  

Mechanism Study of Lauan Pyrolysis Based on TG-FTIR Analysis

作　　者：茹斌[1] 王树荣[1] 林海周 孙武星 骆仲泱 

机构地区：[1]浙江大学清洁能源利用国家重点实验室,杭州310027

出　　处：《工程热物理学报》2015年第9期2036-2039,共4页Journal of Engineering Thermophysics

基　　金：国家自然科学基金(No.51276166);国家重点基础研究发展计划(No.2013CB228101)

摘　　要：以柳桉生物质为原料,利用红外光谱(FTIR)对其结构进行表征,获得主要官能团的分布信息。随后利用热重红外联用技术(TG-FTIR)研究柳桉的热解行为。柳桉主热解阶段存在由纤维素热解造成的主失重峰以及半纤维素和木质素热解引起的两个肩状峰。同时引入双高斯分布活化能模型(DG-DAEM)对柳桉的热解动力学参数进行计算,结果表明其表观活化能主要分布在第一高斯区间。此外通过在线FTIR分析进一步探讨了典型小分子气体产物的生成和演变机理。Lauan was used as the feedstock in this study. The structure of lauan was characterized by FTIR, and the main functional groups information were obtained. TG-FTIR technology was applied to analyze the pyrolysis behavior of lauan. The DTG curve showed that the main decomposition stage existed one sharp and two shoulder peaks, which were resulted from the pyrolysis of cellulose, hemi- celluloses and lignin, respectively. Double Gaussian distributed activation energy model （DG-DAEM） was introduced in this study to calculate the thermal kinetic parameters for lauan pyrolysis, and the resulting apparent activation energies were mainly distributed in the first Gaussian region. By using the online FTIR analysis, the evolution characteristics of the typical small molecular volatiles were detected and discussed.

关 键 词：生物质 热裂解 DG-DAEM TG-FTIR 

分 类 号：TK6[动力工程及工程热物理—生物能]