摘要
以黑龙江省帽儿山地区的6种乔木为研究对象,研究其燃烧性能为森林防火工作提供理论数据。以热重分析法对其综纤维素热解阶段进行研究,采用Coats-Redfern积分法选取机理函数,利用Origin软件对数据进行处理,得到相应的活化能和频率因子,并提取综纤维素热解阶段数据,通过SPSS软件进行主成分分析并进行燃烧性排序。结果表明,6种乔木树干试样的热解过程可以分为失水阶段、综纤维素热解阶段、木质素热解阶段和炭化阶段。其中6种乔木枝干的综纤维素热解阶段活化能由大到小排序为紫椴、樟子松、水曲柳、白桦、落叶松、红松,主成分分析法由大到小排序为紫椴、红松、水曲柳、落叶松、樟子松、白桦,2种排序不同,说明燃烧性不能仅通过微观角度进行评价,应从多方面考虑。
Taking six kinds of arbors in Maoershan area of Heilongjiang Province as the research object, this paper provides theoretical data for forest fire prevention. The pyrolysis stage of holocellulose was studied by thermogravimetric analysis, the mechanism function was selected by Coats Redfern integral method, and the data were processed by Origin software to obtain the corresponding activation energy and frequency factor. The pyrolysis stage data of holocellulose were extracted, and the principal component analysis was carried out by SPSS software to rank the combustibility. The results showed that the pyrolysis process of 6 kinds of arbors’ trunk samples can be divided into water loss stage, holocellulose pyrolysis stage, lignin pyrolysis stage and carbonization stage. The descending order of activation energy in the pyrolysis stage of holocellulose in the branches and stems of 6 kinds of arbors was: Tilia amurensis Rupr., Pinus sylvestris var. mongolica Litv., Fraxinus mandshurica Rupr., Betula platyphylla Suk., Larix gmelinii Kuzen., Pinus koraiensis Sieb. et Zucc..The descending order of principal component analysis was: Tilia amurensis Rupr., Pinus koraiensis Sieb. et Zucc., Fraxinus mandshurica Rupr., Larix gmelinii Kuzen., Pinus sylvestris var. mongolica Litv., Betula platyphylla Suk.. The two orders were different, indicating that the flammability cannot be evaluated only from the micro point of view, but should be considered from many aspects.
作者
刘家豪
辛颖
薛伟
朱梦龙
纪文跃
LIU Jiahao;XIN Ying;XUE Wei;ZHU Menglong;JI Wenyue(College of Engineering and Technology,Northeast Forestry University,Harbin 150040,China;Jilin Province Baihe Forestry Bureau,Jilin Yanbian 133613,China)
出处
《森林工程》
北大核心
2023年第1期54-62,共9页
Forest Engineering
基金
中央高校基本科研业务费专项资金资助项目(2572015CB05)
黑龙江省自然科学基金联合引导项目(LH2020C047)。
关键词
森林可燃物
乔木
热重分析
热解特性
动力学特性
主成分分析
Forest combustibles
arbors
thermogravimetric analysis
pyrolysis characteristics
kinetics characteristics
principal component analysis
