伞罩型湿式脱硫除尘器气液固三相流数值模拟  

Numerical simulation of gas-liquid-solid three-phase flow field in canopy wet desulfurization dust catcher

作　　者：王飞[1] 李彩亭[1] 曾光明[1] 李珊红[1] 王大勇[1] 左乐[1] 张娱[1] 

机构地区：[1]湖南大学环境科学与工程学院,湖南长沙410082

出　　处：《化学工程》2009年第4期31-34,共4页Chemical Engineering(China)

基　　金：湖南省自然科学基金重点项目(03JJY2002);新世纪优秀人才支持计划项目(NCET-04-0769);教育部科学技术研究重点项目(105126)

摘　　要：从数值模拟和试验研究的角度对新型脱硫除尘装置——伞罩型湿式脱硫除尘器气液固三相的除尘特性进行研究。利用FLUENT软件在Euler坐标系中考察气固二相,采用欧拉模型来表述气固二相的相互关系;同时在Lagrange坐标系中考察液滴的运动,并把液滴对气固二相的影响耦合于欧拉模型中,提出了气液固三相的Euler/Euler/Lagrange模型。分析了气相速度场、气相压力场、固相速度场以及液滴质量浓度等的分布情况,得到了除尘情况下装置内气液固三相的分布规律。数值模拟结果与试验结果吻合良好,对装置运行及其优化设计有一定的理论指导意义。The local dust flow performance was studied in gas-liquid-solid three-phase canopy wet desulfurization dust catcher by numerical simulation and experimentation. The gas phase and the solid phase were dealt with in Euler coordinates with FLUENT software, while the motion of liquid particles was described in the Lagrange coordinates. A closed Euler/Euler/Lagrange mathematical model for simulating gas-liquid-solid three-phase local flow was established. Gas velocity field, gas pressure field, solid-phase velocity field, liquid mass concentration distribution, etc. in the tower were analyzed, and a general distribution rule of gas-liquid-solid in dedusting was obtained. The simulation results agree well with the experimental data, and are helpful for practical operation and optimization design of the scrubber.

关 键 词：数值模拟 脱硫除尘器 FLUENT 优化设计 

分 类 号：X701[环境科学与工程—环境工程]