化学工程2025，Vol.53Issue(5)：48-53,6.DOI:10.3969/j.issn.1005-9954.2025.05.009
三通道气流式喷嘴雾化特性数值模拟
Numerical simulation of atomization characteristics of three-channel air flow nozzle
黄成龙 1虞斌 1凌卫平 1尚宇勋 1段松江1
作者信息
- 1. 南京工业大学 机械与动力工程学院,江苏 南京 211816
- 折叠
摘要
Abstract
The nozzle was investigated as a key component of the zero-discharge spray drying tower of desulfurization wastewater in a coal-fired power plant,and a three-dimensional model of a three-channel air flow nozzle was established.The effects of gas pressure,liquid flow rate and nozzle outlet diameter on the flow field in the nozzle,as well as the atomization angle and atomization particle size of the outflow field were analyzed by CFD software.The results show that with the increase of gas pressure,the average velocity of nozzle outlet increases and the volume fraction of liquid decreases.With the increase of liquid flow rate,the average velocity of nozzle outlet decreases and the volume fraction of liquid increases.The nozzle atomization angle is not obviously affected by the increase of gas pressure.With the increase of nozzle outlet diameter and liquid flow rate,the nozzle atomization angle also increases gradually.The increase of atomization angle has little effect on droplet particle size uniformity,and the main distribution range of particle size is 50-90 μm.When the atomization angle increases from 50° to 80°,the atomized particles occupy the largest proportion in the particle size range of 50-70 μm,and the atomized particle size distribution is relatively concentrated.关键词
脱硫废水/干燥塔/喷嘴/雾化角/粒径分布Key words
desulfurization wastewater/drying tower/nozzle/atomization angle/particle size distribution分类
能源科技引用本文复制引用
黄成龙,虞斌,凌卫平,尚宇勋,段松江..三通道气流式喷嘴雾化特性数值模拟[J].化学工程,2025,53(5):48-53,6.
