微雾喷嘴雾化特性及降尘性能  

Atomization Characteristics and Dust Reduction Performance of Micro-Mist Nozzle

作　　者：李浩轩 刘荣华 王鹏飞[1,2] 邬高高 LI Haoxuan;LIU Ronghua;WANG Pengfei;WU Gaogao(School of Resources,Environment and Safety Engineering,Hunan University of Science and Technology,Xiangtan 411201,China;Hunan Provincial Key Laboratory of Safety Mining Techniques of Coal Mines,Hunan University of Science and Technology,Xiangtan 411201,China)

机构地区：[1]湖南科技大学资源环境与安全工程学院,湖南湘潭411201 [2]湖南科技大学煤矿安全开采技术湖南省重点实验室,湖南湘潭411201

出　　处：《矿业工程研究》2022年第1期63-69,共7页Mineral Engineering Research

基　　金：国家自然科学基金资助项目(51574123);湖南省教育厅科学研究重点资助项目(18A185)。

摘　　要：微雾喷嘴是一种改良型的湿式除尘构件.为了解其雾化特性和降尘效果,选用斯普瑞、泰格、LN这3种不同微雾喷嘴,基于现有实验平台及分析仪器进行了2组实验研究.结果表明:在出口直径相同时,随着水压的升高,3种喷嘴的流量、射程均增大,雾滴粒径减小,雾化角则先增大后减小;当固定水压时,这3种喷嘴的流量、雾化角和雾滴粒径随喷嘴出口直径增大而增大,射程随出口直径增大而减小;当出口直径为0.5 mm时,随着水压增加,3种喷嘴的全尘和呼吸性粉尘降尘效率均先升高后降低,斯普瑞喷嘴的降尘效率在多数工况下优势明显.The micro mist nozzle is an improved wet dust removal component.In order to understand its atomization characteristics and dust reduction effect,three different types of micro-mist nozzles,namely Spray,Tiger,and LN,are selected,and two groups of experimental studies are carried out based on the existing experimental platform and analytical instruments.Results show that when the outlet diameter is the same,as the water pressure increases,the flow rate and range of the three nozzles increase,the droplet size decreases,and the atomization angle first increases and then decreases.When the water pressure is fixed at this time,the flow rate,atomization angle and droplet size of these three nozzles increase with the increase of the nozzle outlet diameter,and the range decreases with the increase of the outlet diameter.When the outlet diameter is 0.5 mm,as the water pressure increases,the dust reduction efficiency of all dust and respirable dust of the three nozzles increases first and then decreases.The dust reduction efficiency of the Spray nozzle has obvious advantages in most working conditions.

关 键 词：微雾降尘 供水压力 雾化特性 降尘效率 

分 类 号：TD714.4[矿业工程—矿井通风与安全]