多种动力学模型应用于废旧轮胎的热解机理研究  

Study on Pyrolysis Mechanism of Waste Tire by Applying Various Kinetic Models

作　　者：单体仑 高晓东 田晓龙[1] 边慧光[1] 王孔烁 李朝阳 汪传生[1] HAN Tilun;GAO Xiaodong;TIAN Xiaolong;BIAN Huiguang;WANG Kongshuo;LI Chaoyang;WANG Chuansheng(Qingdao University of Science and Technology,Qingdao 266061,China;China Nuclear Power Engineering Co.,Ltd,Beijing 100840,China)

机构地区：[1]青岛科技大学机电工程学院,山东青岛266061 [2]中国核电工程有限公司,北京100840

出　　处：《橡胶工业》2024年第3期197-203,共7页China Rubber Industry

基　　金：国家自然科学基金青年基金项目(52103117);国家自然科学基金面上项目(52173101);山东省自然科学基金重点项目(ZR2020KE037);青岛市科技惠民示范引导专项(22-3-7-cspz-18-nsh)。

摘　　要：通过热重(TG)分析法研究4种升温速率(10,20,30,40℃·min^(-1))下废旧轮胎的热解机理,并通过无模型法(FWO法、KAS法、Starink法、Friedman法和Kissinger法)和模型拟合法(C-R法)计算废旧轮胎的动力学参数。结果表明:Kissinger法仅获得单一的动力学参数,而FWO法、KAS法、Starink法和Friedman法获得的动力学参数是范围值,Kissinger法的计算精确度最小;采用等转化率法计算动力学参数时,FWO法计算的指前因子明显大于KAS法和Starink法;采用C-R法确定最概然机理函数时,随着升温速率的增大,活化能增大,相关因数无明显变化规律,废旧轮胎热解过程中遵循的机理函数模型为扩散模型D3。TG分析和动力学模型建立的整合可为废旧轮胎的热解处理提供理论支持。The pyrolysis mechanism of waste tire at four heating rates(10,20,30,40℃·min^(-1))was studied by thermogravimetric(TG)analysis,and the kinetic parameters of waste tire were calculated by model-free method(FWO method,KAS method,Starink method,Friedman method and Kissinger method)and model fitting method(C-R method).The results showed that,Kissinger method only obtained a single dynamic parameter,while the dynamic parameters obtained by FWO method,KAS method,Starink method and Friedman method were range values,so Kissinger method had the lowest computational accuracy.When the kinetic parameters were calculated by the equal conversion method,the pre-exponential factor calculated by the FWO method was significantly larger than that calculated by the KAS method and Starink method.When using the C-R method to determine the most probable mechanism function,the activation energy increased with the increase of heating rate,and there was no obvious pattern of change in the correlation coefficient.The mechanism function model followed in the pyrolysis process of waste tires was diffusion model D3.The integration of TG analysis and kinetic model establishment could provide theoretical support for the pyrolysis treatment of waste tires.

关 键 词：废旧轮胎 热解机理 动力学模型 动力学参数 

分 类 号：TQ330.9[化学工程—橡胶工业]