槽式聚光镜面压缩空气除尘性能仿真分析  

Simulation and analysis of dust removal performance by using compressed airon trough collecting mirror

作　　者：王威 苏日力格 王亚辉[1] 张建广[2] 赫英贤 WANG Wei;SU Rilige;WANG Yahui;ZHANG Jianguang;HE Yingxian(School of Energy and Power Engineering,Inner Mongolia University of Technology,Hohhot 010051,China;Tianjin Blue Nest Electric Power Maintenance Co.,Ltd.,Tianjin 300171,China;Inner Mongolia Branch of CGN New Energy Investment(Shenzhen)Co.,Ltd.,Hohhot 010020,China)

机构地区：[1]内蒙古工业大学能源与动力工程学院,内蒙古呼和浩特010051 [2]天津蓝巢电力检修有限公司,天津300171 [3]中广核新能源投资(深圳)有限公司内蒙古分公司,内蒙古呼和浩特010020

出　　处：《能源工程》2024年第5期8-16,共9页Energy Engineering

基　　金：内蒙古自治区直属高校基本科研业务费项目(JY20240049)。

摘　　要：本文针对压缩空气除尘问题,构建了积尘颗粒的受力模型,通过风场与积尘颗粒的耦合计算,模拟了除尘系统在不同颗粒物性及工作参数下的除尘过程,并利用正交试验法对各工作参数进行优化分析。结果表明:对同一类型颗粒,其粒径越小,越难从聚光面上清除;单球、双球、三球的除尘率分别为97.33%、94.99%、93.5%;风刀喷头入口流速在70m/s以上时除尘效果最佳;风刀喷头角度为45°、60°时的除尘效果差别不大,垂直时除尘效果最差;风刀喷头高度越高,除尘效率下降越严重;当镜面的布置倾角为5°、10°、15°时,积尘颗粒的整体除尘率为81.52%、91.25%、97.33%;通过正交试验得到的最佳工作参数为风刀喷头入口流速70m/s,喷头角度45°,喷头高度10mm,聚光镜布置倾角15°。In this paper,the mechanics model for particles purged by compressed air on trough collecting mirror is constructed to estimate the efficiency of dust removal by compressed air.The dust removal process under different particle properties and working parameters are simulated by coupling wind field and dust particles.Working parameters are optimized by orthogonal test method.The results show that for the same type of particles,the smaller the particle size is,the more difficult to be removed from mirror surface.The dust removal efficiency of single ball,double-ball and three-ball are 97.33%,94.99%and 93.5%,respectively.The dust removal efficiency is highest when the inlet flow rate of blade nozzle is above 70m/s.When the angle of the air knife nozzle is 45°and 60°,no obvious difference of dust removal efficiency is found.The efficiency of vertical dust removal is the worst.The higher the height of the blade nozzle,the more serious the decrease of dust removal efficiency.When the inclination angle of mirror is 5°,10°,and 15°,the overall dust removal efficiency is 81.52%,91.25%and 97.33%.The optimal working parameters obtained throughorthogonal test are the inlet flow rate of the air knife nozzle 70m/s,the angle of nozzle 45°,the height of nozzle 10mm and the inclination angle of the condenser arrangement 15°.

关 键 词：压缩空气除尘 积尘颗粒 理论模型 数值模拟 正交试验 

分 类 号：TK513[动力工程及工程热物理—热能工程]