不同雾滴要求下气力式雾化喷嘴的最佳气耗率  

Optimal air-liquid ratio for air-blast atomizer under different droplet requirements

作　　者：郑捷庆[1] 罗惕乾[1] 张军[2] 陈汇龙[1] 王军锋[1] 

机构地区：[1]江苏大学能源与动力工程学院,江苏镇江212013 [2]集美大学机械工程学院,福建厦门361021

出　　处：《化学工程》2007年第6期20-23,共4页Chemical Engineering(China)

基　　金：福建省自然科学基金资助项目(E0410027);福建省教育厅科研项目(JA004232)

摘　　要：为探讨和分析最佳气耗率与液体流量变化之间的规律,采用液体旋流式气力雾化喷嘴分别对水和水煤浆进行雾化特性试验,以雾滴索太尔平均直径和粒径分布作为主要判断指标,根据不同的应用场合对雾滴的不同要求,确定了最佳气耗率的选取标准。结果表明,不同内径的气力式雾化喷嘴在其液体流量(负荷)改变时,均对应有不同的最佳气耗点。最后,回归拟合了雾化工质为水的该喷嘴最佳气耗率经验公式,经对比与实验数据基本吻合。In order to analyze the relationship between optimal air-liquid ratio and water flow rate, experimental investigation was performed for water and coal water slurry spraying characteristics of air-blast atomizer respectively. Sauter Mean Diameter （DSM） and diameter distributions of droplets were applied as two major indicators to determine the standards of optimal air-liquid ratio according to droplet requirements in different engineering practices. The result shows that different working parameters of nozzle internal diameter and water flow rate bring up different optimal air-liquid ratios. An experimental formula for optimal air-water ratio was regressed, which is in approximate agreement with the experimental data.

关 键 词：气力式雾化 最佳气耗率 索太尔平均直径 粒径分布 

分 类 号：TQ021[化学工程]