热解温度对木质素与废旧橡胶催化共热解特性的影响规律  

Effects of Pyrolysis Temperature on Pyrolysis Characteristics of Catalytic Co-pyrolysis of Lignin and Waste Rubber

作　　者：崔勇 王文亮[2] 常建民[3] Cui Yong;Wang Wenliang;Chang Jianmin(Suzhou Institute of Industrial Technology,Suzhou 215104,P.R.China;Shaanxi University of Science&Technology;Beijing Forestry University)

机构地区：[1]苏州工业职业技术学院,苏州215104 [2]陕西科技大学 [3]北京林业大学

出　　处：《东北林业大学学报》2019年第8期88-92,共5页Journal of Northeast Forestry University

基　　金：“江苏省高等学校自然科学研究面上项目(18KJB480007);苏州工业职业技术学院博士科研启动项目(2019KYQD009);江苏高校品牌专业建设工程资助项目(PPZY2015B186);国家自然科学基金资助项目(31800497)

摘　　要：采用热重分析(TG)和热解气质联用分析(Py-GC/MS)考查了热解温度对木质素与废旧橡胶催化共热解过程变化规律及产物生成特性的影响。结果表明:木质素、废旧橡胶及其共混样品(m(木质素)∶m(废旧橡胶)=1∶1)的热解质量损失过程都分为3个阶段,热降解终温残炭量相近;共混样品最大热质量损失速率的峰值温度介于两种原料之间。Py-GC/MS结果表明,热裂解温度对共混样品热裂解产物组成及分布的影响显著;随着热裂解温度升高,热裂解产物的种类逐渐增多,热裂解产物内酚类和烃类物质相对峰面积显著增加,并且出现较高比例的芳香烃类物质。综合考虑热裂解产物总产率和目标产物产率,认为650~700℃是共混样品较适宜的热裂解温度区间。The pyrolysis behavior and product characteristics of catalytic co-pyrolysis of lignin and waste rubber were studied by thermogravimetric analyzer(TG)and pyrolysis-gas chromatogra-phy/mass spectrometry(Py-GC/MS).By TG,lignin,WR and their blends behaved similarly in pyrolysis decomposition and there were three dominant degradation temperature regions.For the Py-GC/MS analysis,the pyrolysis temperature had significant effects on the product characteristics of catalytic co-pyrolysis of lignin and waste rubber.With the pyrolysis temperature rising,the quality of pyrolysis products was improved,because the relative content of phenols and hydrocarbons were significantly increased,especally for aromatics.The 650-700℃was selected as the optimal pyrolysis temperature because higher yields of both total organic pyrolysis products and targets products could be obtained at this condition.

关 键 词：木质素 废旧橡胶 热解温度 催化共热裂解 热重分析 热解气质联用分析 

分 类 号：S713[农业科学—林学]