烟草科技2018，Vol.51Issue(3)：78-86,9.
烟草加料过程中双流体喷嘴雾化粒径的分布特性
Distribution characteristics of particle size of tobacco casing atomized by two-fluid nozzle
摘要
Abstract
In order to investigate the distribution characteristics of particle size of tobacco casing atomized by a two-fluid nozzle and further optimize tobacco casing process,the factors including the type of ejecting medium, gas/liquid ratio,liquid circuit temperature and casing properties were studied with a two-fluid nozzle test device and a laser spray measurement system. Moreover,an empirical model of Sauter mean diameter(D32)was established on the basis of dimensional analysis. The results showed that:1)When the flow rate of ejecting medium or that of liquid circuit was constant,D32decreased gradually and the uniformity index(N)increased slightly with the increase of gas/liquid ratio. 2)When the other conditions were the same,D32and N did not significantly change with the rise of water temperature. However,D32decreased gradually and N did not change significantly with the rise of casing temperature. 3)When the other conditions were the same,D32increased gradually with the increase of casing viscosity. Comparing with water,the N of different casings did not significantly change when compressed air was used as ejecting medium,however,it decreased significantly when steam was used as ejecting medium. 4)When water and casing were atomized with compressed air and steam separately,the average relative error between predicted value and measured value of D32ranged from 2.3% to 3.9% and the maximum relative error was 15.2%.关键词
烟草加料/双流体喷嘴/索特尔平均直径/均匀性指数/预测模型Key words
Tobacco casing/Two-fluid nozzle/Sauter mean diameter/Uniformity index/Prediction model分类
轻工纺织引用本文复制引用
王宇,李晓,张明建,徐大勇,王乐,鲁端峰,王婷,李斌..烟草加料过程中双流体喷嘴雾化粒径的分布特性[J].烟草科技,2018,51(3):78-86,9.基金项目
中国烟草总公司郑州烟草研究院院长基金项目"双流体喷嘴雾化效果评价平台建设及方法研究"(212014CA0310). （212014CA0310）
