内胆式双热型生物质热解反应器内传热过程建模分析  

Analysis of Heat Transfer Process of Liner Type Double Heated Biomass Pyrolysis Reactor

作　　者：李三平[1] 孙雪[1] 王述洋[1] 

机构地区：[1]东北林业大学机电工程学院,黑龙江哈尔滨150040

出　　处：《林产化学与工业》2017年第1期73-80,共8页Chemistry and Industry of Forest Products

基　　金：中央高校基本科研业务费专项资金资助(2572014BB06)

摘　　要：在对自行设计的内胆式双热型生物质热解反应器内热量传递过程分析的基础上,针对反应器内部传热复杂的特点,既有生物质颗粒与热床料之间的热传导,也有生物质颗粒与热载气之间的对流换热,还包括热壁面对生物质颗粒及床料的辐射换热等多种传热方式,建立了反应器的壁面传热、颗粒间传热和二维对流换热的数学模型;并通过仿真分析对传热模型进行了验证,得出该耦合仿真模型基本满足生物质颗粒快速热裂解条件,并预测出口气相平均温度均为720 K。Based on the analysis of heat transfer process of liner type double heated biomass pyrolysis reactor designed by the author, the heat mathematical models of reactor wair s conduction heat transfer, heat transfer among particles and two-dimensional convective heat transfer were established according to the reactors complex internal heat transfer characteristics. This model contained a variety of heat transfer methods such as heat transfer between thermal bed material and biomass powder, heat convection of biomass powder and heat carrier gas, radiation heat transfer from the wall to biomass powder and bed material, etc. Finally, the heat transfer model was determined by simulation analysis. The simulation results show that the coupling simulation model can meet the requirement of rapid pyrolysis of biomass particles, and the average temperature of outlet gas phase is about 720 K.

关 键 词：生物质热解 传热过程 传热模型 仿真 

分 类 号：TQ35[化学工程] TK6[动力工程及工程热物理—生物能]