豆类秸秆两级热解特性研究  

Two-step pyrolysis characteristics of bean stalks

作　　者：张立强[1] 李凯[1] 朱锡锋[1] 

机构地区：[1]中国科学技术大学安徽省生物质洁净能源重点实验室,安徽合肥230026

出　　处：《燃料化学学报》2016年第5期534-539,共6页Journal of Fuel Chemistry and Technology

基　　金：国家重点基础研究发展规划(973计划;2013CB228103);中国科学院重点部署项目(KGZD-EW-304-3)资助~~

摘　　要：利用热裂解仪-气相色谱/质谱联用仪(Py-GC/MS)对黄豆秆进行了两级热解。结果表明,随着第一级热解温度(t1)的升高,第一级热解产物总峰面积逐渐增大,第二级热解产物总峰面积逐渐减小;在第一级热解产物中,酸类、酮类和呋喃类等源于纤维素和半纤维素的产物含量在t1为400和450℃时较高;在t1为450和500℃的条件下,第二级热解产物中烃类产物的含量高达20%以上。两级热解可以在第一级和第二级热解中分别获取不同的高含量产物,如乙酸、糠醛、愈创木酚、甲苯和苯等,实现生物质的选择性热解。Two-step pyrolysis of soybean stalk was investigated using pyrolysis-gas chromatography/mass spectrometry （ Py-GC/MS ） . The results indicate that with the increase of the first-step pyrolysis temperature （ t1 ） , the total peak area of the first-step products becomes higher. However, for the second-step, the total peak area decreases gradually with the increase of t1 . The products in the first-step pyrolysis have higher contents of acids, ketones and furans when t1 is 400 or 450℃. This is because that the products are originated from cellulose and hemicellulose. The content of hydrocarbon products in the second-step is more than 20% when t1 is 450 or 500℃. With two-step pyrolysis some products with high content can be obtained in the first or second step, respectively, such as acetic acid, furfural, guaiacol, methylbenzene and benzene etc. , thus preliminarily achieving the selective pyrolysis of biomass.

关 键 词：两级热解 选择性热解 Py-GC/MS 黄豆秆 

分 类 号：TK6[动力工程及工程热物理—生物能]