秸秆气化炉焦油分离系统仿真分析  

Simulation analysis of tar separation system for straw gasification furnace

作　　者：孙步功[1] 石林榕[1] 张克平[1] 孙伟[1] 吴建民[1] 

机构地区：[1]甘肃农业大学工学院,兰州市730070

出　　处：《中国农机化学报》2016年第10期95-97,共3页Journal of Chinese Agricultural Mechanization

基　　金：国家公益性行业(农业)科研专项经费项目(201503124);甘肃农业大学青年导师基金资助项目(GAU-QNDS-201303)

摘　　要：为研究秸秆气化炉焦油分离筒内部气体和液体焦油的运动状况与其分离机理,采用Fluent软件对焦油分离筒内部气液流场运动进行数值模拟,采用RNGk-ε方程模拟其中的气相流场,采用DPM模型模拟了焦油液体在焦油分离筒中的运动。通过改变焦油分离筒入口位置、入口大小和喂入速度三个因素,对其分离效率进行对比分析。模拟结果可知:三个因素对焦油分离系统分离效率影响程度的主次顺序依次是入口位置、入口大小、喂入速度;以入口位置z=450mm、喂入速度v=10m/s、入口大小为60mm×100mm确定的焦油分离系统焦油分离效果较优。In order to study movement and separation mechanism of interior gas and liquid tar in the tar separation cylinder of straw gasification furnace,numerical simulation of the movement of inner flow field was done with Fluent software.The gas phase flow field was simulated by using RNG k-epsilon equation and the movement of liquid tar in tar separation tube was simulated with DPM model.Comparative analysis of separation efficiency was conducted based on the changing of three factors,including tar separating cylinder inlet location（z）,inlet size and feed speed（v）.The results showed that the order of primary and secondary influence is inlet location,inlet size and feed speed,the better separation performance could be obtained at z=450mm,v=10m/s and inlet size as 60mm×100mm.

关 键 词：秸秆气化炉 焦油分离筒 流场 分离效率 

分 类 号：X383[环境科学与工程—环境工程]