料液脉动燃烧尾气雾化试验  

Experiment on Atomizing Properties of Helmholtz Pulse Combustor

作　　者：杨德勇[1] 谢翔燕[2] 刘相东[1] 

机构地区：[1]中国农业大学工学院,北京100083 [2]北京市质量技术监督信息研究所,北京100013

出　　处：《农业机械学报》2009年第3期90-92,共3页Transactions of the Chinese Society for Agricultural Machinery

基　　金：国家“863”高技术研究发展计划资助项目(2007AA05Z217)

摘　　要：脉动燃烧器产生的高温振荡尾气流可用于料液的脉动气流雾化干燥,作业成本低,干燥质量好。本文采用小型亥尔姆霍茨(Helmholtz)型脉动燃烧器,利用激光测试仪测定雾滴粒度和粒度分布,研究了脉动燃烧尾气流雾化料液过程中料液流量、料液粘度和脉动气流频率对雾滴粒度和粒度分布的影响规律。试验结果分析表明,料液流量35 L/h、脉动气流频率100 Hz、料液粘度适中时的雾化效果最好。The oscillating hot air that generated by a pulse combustor can be used to atomize and dry liquid materials.It has many advantages,such as low operation cost, high drying quality,and simple structure of the dryer.A small Helmholtz pulse combustor was used in this research.An optical analyzer was employed for measuring the mean diameters of atomized droplets and droplets size distribution.The feed rate and viscosity of liquid material,frequency of oscillating hot air are the main factors affecting the atomizing properties.The experimental results indicated that the uniform droplet size distribution could be obtained under the conditions of a low feed rate,high-frequency pulsating flow and moderate viscosity.

关 键 词：脉动燃烧 料液雾化 粒度分布 

分 类 号：S226.6[农业科学—农业机械化工程]