乔木类园林废弃物工业组成与热解特性相关性研究  

Study on Correlation between Industrial Composition and Pyrolysis Characteristics of Typical Garden Waste

作　　者：姚宏鹤 蔡威威 张萍 曹畅 刘学磊 任学勇 祁项超 YAO Hong-he;CAI Wei-wei;ZHANG Ping(College of Material Science and Technology,Beijing Forestry University,Key Laboratory of Wood Materials Science and Application,Ministry of Education,Beijing 100083)

机构地区：[1]北京林业大学材料科学与技术学院,木质材料科学与应用教育部重点实验室,北京100083 [2]北京市产品质量监督检验院,北京100023 [3]河北省活性炭产业技术研究院(筹建),河北省活性炭技术创新中心,河北承德067500

出　　处：《安徽农业科学》2022年第8期100-103,265,共5页Journal of Anhui Agricultural Sciences

基　　金：北京林业大学大学生创新创业训练计划项目(X202110022150);绿色发展大数据决策北京市重点实验室开放课题资助项目(DM202101);河北省中央财政林草科技推广示范项目(冀TG〔2022〕004)。

摘　　要：[目的]探究原料组成对园林废弃物热解特性的影响。[方法]选取北京市乔木类园林树种刺槐、毛白杨、悬铃木、国槐和洋白蜡的树枝和树叶作为试材,分析原料的工业组成、热解特性及动力学参数,研究其相关性关系。[结果]园林废弃物的工业组成与其热解特性参数具有较强的相关性,其中挥发分与灰分影响显著:原料挥发分含量越高,则其热解起始温度越低,最大热失重速率绝对值越大,热解反应速率常数越大,热解反应易发生且较为剧烈;灰分含量越高,则热解残炭率越大且最大热失重速率绝对值减少、热解速率常数越小,热解转化反应越缓慢。[结论]该研究可为分析判断园林废弃物热解转化特性提供科学参考。[Objective]In order to explore the influence of feedstock composition on the pyrolysis characteristics of garden waste.[Method]The branches and leaves of some macrophanerophytes in Beijing,such as Robinia pseudoacacia,Populus tomentosa,Platanus occidentalis,Sophora japonica and Fraxinus pennsylvanica were selected as raw materials.The proximate composition,pyrolysis characteristics and kinetic parameters of the feedstocks were measured and calculated,and their correlation analysis was also studied.[Result]The result showed that there were strong correlations between the proximate composition of garden waste and its pyrolysis characteristic parameters,particularly volatiles and ash content.It was found that a feedstock with higher volatiles content was tend to have lower initial pyrolysis temperature and greater maximum weight-loss rate,which indicated that it was easier to be thermally converted with higher reaction rate.However,a feedstock with higher ash content had lower maximum weight-loss rate but higher residual carbon rate,showing a slower pyrolysis converting process with lower reaction rate.[Conclusion]This study can provide scientific reference for analyzing and judging the thermal energy conversion characteristics of garden waste.

关 键 词：园林废弃物 热解特性 工业组成 挥发分 灰分 

分 类 号：X705[环境科学与工程—环境工程]