基于Weibull混合模型的生物质热解动力学研究  

Research on biomass pyrolysis kinetics based on Weibull mixture model

作　　者：王璐[1] 黄历[1] 刘荣厚[1] 蔡均猛[1] 

机构地区：[1]上海交通大学农业与生物学院生物质能工程研究中心,上海200240

出　　处：《可再生能源》2014年第12期1850-1855,共6页Renewable Energy Resources

基　　金：公益性行业(农业)科研专项"农业生物质特性及其共享平台技术研究"(201003063-09)

摘　　要：该研究选取中国产量较高的3种农作物水稻、油菜和棉花的秸秆作为研究对象,采用Weibull混合模型对稻秆、油菜秆和棉秆进行热解动力学解析。结果表明,稻秆、油菜秆和棉秆的热解动力学子过程可分为3个过程:水分蒸发,热解挥发分析出和热解炭化;Weibull混合模型可很好的描述3种物料的热解挥发分析出过程;Weibull混合模型可将生物质热解动力学过程分解为其主要组分纤维素、半纤维素和木质素的热解子过程。研究结果有助于后续生物质热解机理的研究。The study selected three crops of rice,rape and cotton straw as research object,analyzed pyrolysis kinetics of rice straw, rape straw and cotton stalk by Weibull mixture mode. The results have shown that the pyrolysis kinetic processes of three biomass samples can be divided into three sub-processes： water evaporation, pyrolysis volatilization and pyrolysis carbonization.Weibull mixture model could describe pyrolysis devolatilization process of 3 kinds of materials very well. Kinetics process of biomass pyrolysis could be devided into 3 sub-process of cellulose, hemicellulose, and lignin by Weibull mixture mode, which is very helpful for the further research on biomass pyrolysis mechanism.

关 键 词：热重 农作物秸秆 Weibull混合模型 动力学 热解 

分 类 号：TK6[动力工程及工程热物理—生物能] S216.2[农业科学—农业机械化工程]