中南大学学报（自然科学版）2018，Vol.49Issue(1)：22-30,9.DOI:10.11817/j.issn.1672-7207.2018.01.004
一种涡流除雾器的实验与数值模拟研究
Experimental study and numerical simulation of one kind of vortex demister
摘要
Abstract
Demisting efficiency of baffle plate demister for small droplets was low. To solve this problem, a new kind of demister, i.e. vortex, demister was proposed. The flow field of vortex demister was complicated because of vortexes, which will increase the removal efficiency of small droplets. Vortex demister and baffle plate demister were studied by numerical simulation. And some experiments were done to show the validity of the simulation. The results show that the demisting efficiency of vortex demister is 10.8％-29.8％ higher than that of baffle plate demister when the gas flow rate is between 3 and 7 m/s. The removal efficiency of 20 μm droplet of vortex demister is higher than 90％ when the gas flow rate is between 3 and 7 m/s. And the removal efficiency of vortex demister is higher than that of baffle plate demister when droplets were small. For example, the removal efficiency of vortex demister is 17.8％-18.2％ higher than that of baffle plate demister when the diameter of droplets is 10 μm. And the pressure drop of vortex demister is higher than that of baffle demister. When the gas flow rate is 3 m/s, the difference is 193 Pa, and the difference will increase with gas flow velocity increasing.关键词
计算流体力学/数值模拟/气液两相流/涡流除雾器/除雾效率Key words
computational fluid dynamics/numerical simulation/gas-liquid flow/vortex demister/demister efficiency分类
化学化工引用本文复制引用
朱凯,袁竹林..一种涡流除雾器的实验与数值模拟研究[J].中南大学学报（自然科学版）,2018,49(1):22-30,9.基金项目
国家重点基础研究发展规划(973计划)项目(2013CB228505) （973计划）
国家自然科学基金重大项目(51390492) (Project(2013CB228505) supported by the National Basic Research Development Program of China (973 Program) （51390492）
Project(51390492) supported by the Major Program of National Natural Science Foundation of China) （51390492）
