垃圾衍生燃料与褐煤共热解特性及动力学模型比较  

Co-pyrolysis Characteristics of Refuse Derived Fuel and Lignite and Its Kinetic Parameters with Different Methods

作　　者：凌鹏[1] 刘亮[1] 刘成[1] 尹艳山[1] 姜哲浩[1] 余俭民 LING Peng LIU Liang LIU Cheng YIN Yanshan JIANG Zhehao YU Jianmin(School of Energy and Power Engineering, Changsha University of Science and Technology, 410114 Changsha)

机构地区：[1]长沙理工大学能源与动力工程学院,长沙硕士生410114

出　　处：《煤炭转化》2017年第4期6-12,共7页Coal Conversion

基　　金：国家自然科学基金资助项目(51206012)

摘　　要：以城市生活垃圾(municipal solid waste,MSW)的典型组成为样本基础,配制具有稳定物理化学性质的垃圾衍生燃料(refuse derived fuel,RDF).通过升温速率控制,探究不同升温速率对垃圾衍生燃料与褐煤共热解的影响;采用Coats-Redfern模型法以及Friedman,Flynn-WallOzawa(FWO)和Kissinger-Akahira-Sunose(KAS)无模型法,得到RDF与褐煤共热解反应动力学参数.结果表明:Coats-Redfern模型中,升温速率为10℃/min时,对应生物质组分及塑料类高分子聚合物热解阶段活化能最低;生物质组分及塑料类高分子聚合物热解阶段最优拟合级数分别为0.5和1.5;随着级数的增长,活化能与级数呈正相关关系.按照Friedman,FWO及KAS无模型法拟合的结果,转化率为α=0.1,α=0.2~0.6,α=0.7~0.9的共热解反应过程具有相似的动力学特性及反应机理.Refuse derived fuel（RDF）was prepared with stable physical and chemical properties based on the typical composition of municipal solid waste.RDF and lignite were pyrolyzed at different heating rates by thermogravimetric analyzer.The apparent kinetic parameters were studied by using the Coats-Redfern,Friedman,Flynn-Wall-Ozawa method（FWO）and Kissinger-Akahira-Sunose method（KAS）during the co-pyrolysis of RDF and lignite.The results show that the activation energy of the plastic polymers and the biomass reaches the lowest point when the heating speed is 10 ℃/min in the Coats-Redfern model.The best fit progression series of pyrolysis of biomass materials and plastic polymers are 0.5and 1.5.With the growth of the series,the activation energy is proportional to the growth and progression.According to the model-free method of Friedman,FWO,KAS,three parallel linear（α=0.1,α=0.2-0.6,α=0.7-0.9）have similar kinetics and reaction mechanisms.

关 键 词：垃圾衍生燃料 褐煤 热解 热重 动力学模型 

分 类 号：TQ530.2[化学工程—煤化学工程] X705[环境科学与工程—环境工程]