杨木微波热解产气特性实验研究  

EXPERIMENTALSTUDYON GAS PRODUCTION CHAREACTERISTIC OF POLAR WOOD MICROWAVE PYROLYSIS

作　　者：彭好义[1] 李志晴[1] 沈贞 杨延锋[1] 李立清[1] 蒋绍坚[1] Peng Haoyi;Li Zhiqing;Shen Zhen;Yang Yanfeng;Li Liqing;Jiang Shaojian(School of Energy and Engineering,Central South University,Changsha 410083,China)

机构地区：[1]中南大学能源科学与工程学院,长沙410083

出　　处：《太阳能学报》2020年第4期235-242,共8页Acta Energiae Solaris Sinica

基　　金：国家科技支撑计划(2015BAL04B02)。

摘　　要：以杨木为研究对象,利用自行设计的钟罩式生物质微波热解实验装置,研究杨木在不同微波功率下热解的产气特性,探讨微波功率和热解终温对热解过程产气成分、产气率和热值的影响规律,并引入热解气化效率概念。实验结果表明:在不同温度段,杨木微波热解产生的气体各组分体积分数的相对大小有差异,微波功率增加,对CO、CO2和CH4的产生起到一定的促进作用,而对H2的产生影响不明显。随着热解终温的升高,热解产气中CO、CO2、CH4和H2的体积分数均有所增加。提高微波功率和热解终温均可提升热解产气率,增大产气热值峰值,提高热解气化效率。The gas production mechanism of poplar wood microwave pyrolysis under different microwave power is studied by using self-designe bell-type microwave pyrolysis daice in this paper.The influences of microwave power and final pyrolysis temperature on the composition,the yield and heating value(HV)of pyrolysis gas are researched,and the definition of pyrolysis gasification efficiency is introduced.Experimental results show that at different temperature stages,the volume fraction is different among the gas components produced by microwave pyrolysis of poplar wood.The increase of microwave power promotes the generation of CO,CO2 and CH4,but has no remarkable influence on H2.With the increase of final pyrolysis temperature,the production of CO,CO2,CH4 and H2 is improved.Elevating the microwave power and final pyrolysis temperature can enhance the gas yield,increase the maximum value of HV of gas,and improve the pyrolysis gasification efficiency.

关 键 词：生物质能 微波加热 热解过程 热解温度 产气特性 杨木 

分 类 号：TK6[动力工程及工程热物理—生物能]