荷电喷雾对脱硫塔内颗粒物的脱除试验  

Removal characteristics of fine particles in desulfurization tower by charged spray

作　　者：孟新 王军锋[1] 徐惠斌[1] 李金 张伟[1] MENG Xin;WANG Junfeng;XU Huibin;LI Jin;ZHANG Wei(School of Energy and Power Engineering,Jiangsu University,Zhenjiang,Jiangsu 212013,China)

机构地区：[1]江苏大学能源与动力工程学院,江苏镇江212013

出　　处：《江苏大学学报（自然科学版）》2023年第1期82-88,共7页Journal of Jiangsu University：Natural Science Edition

基　　金：国家重点研发计划项目(2017YFB0603205)。

摘　　要：为了提高湿法脱硫技术对脱硫塔内烟气细颗粒物的脱除效率,设计了一套新型吹扫式荷电雾化喷嘴装置,并将该装置应用于搭建的可视化脱硫塔模型实验台,研究不同运行参数对颗粒物的脱除效果.研究结果表明:液滴的荷电效果受喷淋流量和喷雾角度的影响较大,且存在最佳荷电效果工况值;随着颗粒物粒径的增加,整体颗粒物分级脱除效率得到提高;脱除效率随着液体流量的增大而增大,随着烟气流速的增加而减小,随着粉尘质量浓度的增加呈现先增大后减小的趋势;液滴荷电后,能够进一步提高颗粒物的脱除效率,从而达到高效脱除细颗粒物的目的.To improve the removal efficiency of flue gas fine particles in the desulfurization tower by wet desulfurization technology, a new set of purging electrically charged atomization nozzle device was designed and applied to the visual desulfurization tower model test bed. The effects of operating parameters on the particle removal efficiency were systematically investigated. The results show that the charge effect of spray droplets is greatly affected by spray flow rate and spray angle, and there is an optimal charge effect working condition value. With the increasing of particle size, the overall particle classification removal efficiency is increased. The particle removal efficiency is increased with the increasing of fluid flow rate and decreased with the increasing of flue gas flow rate, which is increased firstly with latter decreasing by increasing the dust concentration. The removal efficiency of particulate matter can be further improved after the droplet is charged, and the purpose of efficient removal of fine particulate matter can be realized.

关 键 词：喷嘴 湿法脱硫 细颗粒物 荷电雾化 脱除效率 

分 类 号：O359[理学—流体力学] X701[理学—力学]