| 帽儿山地区10种常见树叶的燃烧性能和热重分析 |
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| 引用本文： | 张依夏,孙才英.帽儿山地区10种常见树叶的燃烧性能和热重分析[J].安徽农业科学,2014(14):4298-4301,4313. |
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| 作者姓名： | 张依夏 孙才英 |
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| 作者单位： | 东北林业大学理学院,黑龙江哈尔滨,150040;东北林业大学理学院,黑龙江哈尔滨,150040 |
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| 摘 要： | 使用热重分析法对黑龙江省帽儿山地区的10种代表性树种进行热解特性和动力学研究,利用TG-DTG曲线分析了可燃物热解的基本过程,通过热解参数对不同植物可燃物热解特性作定量比较,了解到木质素、半纤维素及纤维素的热解特性和温度、失重量以及失重速率之间的关系,采用分阶段一级反应动力学模型Coats-Redfem法求得相应的热解动力学参数活化能E和频率因子A.结果表明：在氮气气氛下10种树叶的热解均经历水分析出、快速热解、炭化3个主要阶段;计算得出樟子松、黑皮油松具有较好的防火性能,着火温度、活化能分别是：275.17℃、44.188 6 KJ/mol和274.38 ℃、42.864 3 KJ/mol.还利用极限氧指数技术,测得了可燃物的相对极限氧指数值,其数值可以反映可燃物可燃性的高低,得出榆树的氧指数是26.4％,属于难燃;黑皮油松的氧指数是20.2％,接近易燃.
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| 关 键 词： | 热解 热重分析 极限氧指数 |
Thermogravimetric Analysis and Combustion Performance of 10 Common Types of Tree Leaves in Maoer Mountain Region |
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| ZHANG Yi-xia,SUN Cai-ying.Thermogravimetric Analysis and Combustion Performance of 10 Common Types of Tree Leaves in Maoer Mountain Region[J].Journal of Anhui Agricultural Sciences,2014(14):4298-4301,4313. |
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| Authors: | ZHANG Yi-xia SUN Cai-ying |
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| Institution: | (College of Science, Northeast Forestry University, Harbin, Heilongjiang 150040) |
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| Abstract: | By thermogravimetric analysis method,this paper studied pyrolysis characteristics and kinetics of 10 kinds of representative trees species grown in Maoer Mountain of Heilongjiang Province.Besides,it analyzed basic pyrolysis process of fuel using TG-DTG curve.Through pyrolysis parameters,it made quantitative comparison of pyrolysis characteristics of the different plant fuel and obtained the relation between lignin,hemicellulose and cellulose.By grading reaction kinetics model （Coats-Redfem method）,it obtained their activation energy E and frequency factor A.All samples of pyrolysis in nitrogen atmosphere underwent three major stages,namely,water precipitation,fast pyrolysis and carbonization.In addition,Mongolian scotch pine and Black pinus tabulaeformis carr have better fireproof performance than other leaves with ignition temperature of 275.17 ℃ and 274.38 ℃ and activation energy of 44.188 6 KJ/mol and 42.864 3 KJ/mol respectively.Further,with the aid of the technology of relative limited oxygen index （LOI）,it measured the LOI of fuel.Its numerical value can reflect the fuel combustibility.Oxygen index of elm is 26.4％ and belongs to flame resistant level,while black pinus tabulaeformis oxygen index is 20.2％ and belongs to inflammables. |
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| Keywords: | Thermal decomposition Thermogravimetric analysis Limited oxygen index （LOI） |
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