摘要
以新型草酸二甲酯加氢制乙二醇混合器为研究对象,要求混合器内喷嘴流量为3 400 kg/h,喷嘴压降为300 kPa,气液两相混合雾化粒径小于200μm。通过喷嘴雾化性能研究,设计制造了一种低压大流量小粒径喷嘴,得到了喷嘴平均粒径为250μm。运用气液两相对喷粒径二次破碎原理,通过实验及CFD数值模拟,获得了喷嘴液相与高速气相对喷的最佳角度,实现了气液两相混合雾化平均粒径为150μm的要求,为草酸二甲酯加氢制乙二醇混合器提供了设计依据。
A new type of dimethyl oxalate hydrogenated ethylene glycol mixer was studied to meet the requirements that the nozzle flow rate of mixer was 3 400 kg/h,the pressure drop of nozzles was 300 kPa,and the atomized particle size of gas-liquid two-phase mixture was less than 200μm.Through the study of the atomization performance of the nozzle,a low-pressure,large-flow rate,small-particle size(average particle size was 250μm)nozzle was designed and manufactured.Based on the principle of secondary crushing of gas-liquid two-phase effecting on spraying particle size,the optimal angle of relatively spraying of liquid phase and high-speed gas was obtained by CFD numerical simulation,and the requirement of atomizing average particle size of gas-liquid two-phase mixture,i.e.,150μm,was realized,which provides an important designed consideration for dimethyl oxalate hydrogenated ethylene glycol mixer.
作者
刘子龙
陈琴珠
王学生
张朝
LIU Zilong;CHEN Qinzhu;WANG Xuesheng;ZHANG Zhao(School of Mechanical and Power Engineering,East China University of Science and Technology,Shanghai 200237,China)
出处
《实验室研究与探索》
CAS
北大核心
2019年第7期57-61,共5页
Research and Exploration In Laboratory
关键词
低压大流量
气液混合
对喷角度
雾化性能
数值模拟
low pressure high flow
gas-liquid mixing
spraying angle
atomization performance
numerical simulation
