煤矿井下输送机电设备喷雾除尘技术研究  

Research on spray dust removal technology of underground electromechanical conveyor in coal mine

作　　者：迟青君 宋长军 李景屿 雷鹏 Chi Qingjun;Song Changjun;Li Jingyu;Lei Peng(Pingzhuang Coal Industry(Group)Co.,Ltd.,Chifeng Inner Mongolia 024076,China;Changzhou Scientific Research and Trial Production Center Co.,Ltd.,Changzhou Jiangsu 213000,China)

机构地区：[1]平庄煤业(集团)有限责任公司,内蒙古赤峰024076 [2]常州科研试制中心有限公司,江苏常州213000

出　　处：《煤化工》2024年第4期125-128,共4页Coal Chemical Industry

基　　金：国家自然科学基金资助项目(51975569)。

摘　　要：煤矿井下输送过程中产生的大量粉尘会对煤矿安全生产造成严重影响,常用的降尘方式为喷雾降尘。喷嘴结构及流动参数是影响喷雾降尘效果的重要因素之一。采用计算流体力学软件对喷嘴喷雾降尘进行建模,分析喷嘴入口段、出口段孔径和锥形区锥角变化等因素对喷嘴雾化效果的影响。通过软件模拟水流经喷嘴雾化后在分析域中的流动分布情况发现:对于锥形喷嘴,为兼顾覆盖范围和除尘效率,喷嘴出口孔径优选2.5 mm,入口段内径优选6.5 mm,入口段长度选用流场中高速区面积最大的5 mm,锥角优先选用120°。A large amount of dust produced during the underground transportation in coal mine would seriously affect the safety of coal mine production.The common dust removal method was spray dust removal,and the nozzle structure and flow parameters were important factors affecting the dust removal effect of spray.CFD software was used to model the dust fall of nozzle spray and analyze the influence of nozzle inlet/outlet pore size and cone angle changes on the nozzle atomization effect.Through the software simulation of water flow distribution in the analysis domain after nozzle atomization,it was found that for the conical nozzle,in order to accommodate both coverage range and dust removal efficiency,the nozzle outlet pore size should be optimized at 2.5 mm,the inner diameter of the inlet section should be optimized at 6.5 mm,the length of the inlet section should be selected at 5 mm which had the largest high-speed area in the flow field,and the preferred cone angle should be 120°.

关 键 词：喷雾除尘 锥形喷嘴 煤矿粉尘 孔径 锥角 

分 类 号：TD528[矿业工程—矿山机电]