高温高固气比条件下旋风预热器分级分离效率的研究  

Investigation into fractional collection efficiency of cyclone preheater at conditions of high temperature and high solid-gas mass ratio

作　　者：杨沛浩[1] 陈延信[1] 徐德龙[1] 

机构地区：[1]西安建筑科技大学粉体工程研究所,陕西西安710055

出　　处：《西安建筑科技大学学报（自然科学版）》2015年第5期752-759,共8页Journal of Xi'an University of Architecture & Technology(Natural Science Edition)

基　　金：国家科技支撑计划项目(2012BAA08B01)

摘　　要：在温度分别为15℃、200℃、400℃、600℃、800℃,固气质量比分别为0.5、1.0、1.5、2.0、2.5,风速分别为14 m/s、16 m/s、18 m/s、20 m/s、22 m/s、24 m/s的不同条件下,试验研究温度、固气比和风速对旋风预热器分级分离效率的影响,结果表明：物料颗粒直径dp≤1μm时,分级分离效率很高;临界粒径随着风速的提高而减小,随着固气比的增加而减小;临界粒径随着温度的升高逐渐增大,400-600℃时达到高点,随着温度的继续升高临界粒径反而变小.At different conditions such as temperature of 15℃,200℃,400℃,600℃ and 800℃;solid-gas mass ratio of 0.5,1.0,1.5,2.0 and 2.5;gas velocity of 14m/s,16m/s,18m/s,20m/s,22 m/s and 24 m/s, the influences on fractional collection efficiency were studied. The results show that fractional collection efficiency is high for the particle diameter of less than 1μm; critical size decreases with 天the increase of the gas velocity or the solid-gas mass ratio; critical size increases gradually with the increase of temperature; On reaching a maximum between 400℃-600℃ it decreases gradually as temperature further increases.

关 键 词：旋风预热器 分级分离效率 温度 风速 固气质量比 

分 类 号：TQ172.6[化学工程—水泥工业]