摘要
建立闪速炉旋流燃烧器试验模型,通过冷模试验方法研究旋流燃烧器颗粒分布特征。结果表明,反应塔内颗粒分布受控于风幕风和内旋风射流综合作用,风幕风射流使颗粒集中分布于燃烧器正下方区域,内旋风射流使颗粒远离燃烧器正下方区域分布;同轴多通道射流切向动量矩与按半径加权的轴向动量矩之比M与颗粒质量偏析度p_x和中心区域颗粒质量分数x_1拟合后的无量纲关联式分别为px=5.71e^(-0.262M)-0.34 M、x_1=68.66e!(-0.264M)-4.05 M;p_x与x_1近似线性相关。
An experimental model of flash furnace with swirling burner was established and particle distribution characteristic was studied with cold experimental method.The results show that particle distribution in reaction tower is controlled by combined action of process air and inner cyclone.Particles are concentrated on central zone under the burner by process air and dispersed away from central zone by inner cyclone.The ratio M,tangential momentum moment to axial momentum moment weighted according to radius in coaxial multi-channel burner,is fitted as the nonlinear function with two characteristic indexes expressed particles distribution uniformity in tower of mass segregation function px and central mass fraction x_1 within the scope of experiment data,and the dimensionless correlations are p_x=5.71e^（-0.262 M）-0.34 M and x_1=68.66e^（-0.264 M-4.05 M） respectively.There is an approximated linear relationship between pxand x_1.
出处
《有色金属（冶炼部分）》
CAS
北大核心
2016年第4期8-12,共5页
Nonferrous Metals（Extractive Metallurgy)
基金
国家高技术研究发展计划项目(2010AA065200)
中南大学中央高校基本科研业务费专项资金(2012zzts087)
关键词
旋流燃烧器
颗粒分布特征
动量矩比
无量纲关联式
swirling burner
particles distribution characteristic
momentum moment ratio
dimensionless correlation
