岩巷综掘工作面湿式过滤除尘器关键部件研制  

Development of key components of wet filter dust collector for fully mechanized driving face in rock roadway

作　　者：刘涛 LIU Tao(CCTEG Chongqing Research Institute,Jiulongpo,Chongqing 400039,China)

机构地区：[1]中煤科工集团重庆研究院有限公司,重庆市九龙坡区400039

出　　处：《中国煤炭》2024年第7期135-140,共6页China Coal

摘　　要：岩巷综掘工作面掘进期间粉尘浓度高、粉尘粒径小,常规湿式除尘器难以达到理想的抽尘净化效果,而在掘进过程中所产生的岩石粉尘亲水性强、易粘接,当粉尘凝结成团后依附在叶片或喷雾网时,造成的阻力过大极易导致除尘器电机过载甚至烧毁。针对岩巷综掘工作面除尘器粉尘治理效率低、电机容易过载等现象,开展矿用湿式过滤除尘器关键部件的研制,将除尘器单一喷雾模式改变为复合立体喷雾模式,并优化喷嘴以提高降尘效率;通过喷涂不粘层、调整风机叶片数量和安装角、设计封而不堵的喷雾立体网、改变喷雾流量等技术手段,避免岩粉粘结风机、堵塞喷雾网。通过在河南焦煤能源有限公司九里山煤矿16131中间底抽巷进行现场应用后,司机位置处总粉尘降尘效率达97.2%,呼吸性粉尘降尘效率达92.8%,明显改善了煤矿井下作业环境。During the driving of fully mechanized driving face in rock roadway,the dust concentration is high and the dust particle size is small,conventional wet dust collectors are difficult to achieve good dust collection and purification effect;the rock dust produced by the rock driving is highly hydrophilic and easy to bond,and when the dust is agglomerated and attached to the blade or spray net,the resistance is often too large,which will easily lead to overload or even burning of dust collector motor.In response to the low dust control efficiency and the overload tendency of the motor of the dust collector in the fully mechanized driving face in rock roadway,the development of key components of the wet filter dust collector for mining was carried out,changing the single spray mode of the dust collector to the composite three-dimensional spray mode,and optimizing the nozzle to improve the dust reduction efficiency.By spraying non-sticking layer,adjusting the number and installation angle of fan blades,designing spray three-dimensional net without blocking,changing spray flow and other technical means,rock powder was blocked to bind fan and block spray net.Through the on-site application in the 16131 middle bottom drainage roadway of Jiulishan Coal Mine of Henan Jiaozuo Coal Industry Energy Co.,Ltd.,the total dust reduction efficiency at the driver's position reached 97.2%,and the dust reduction efficiency of respirable dust reached 92.8%,which showed that the underground operation environment was improved significantly.

关 键 词：岩巷综掘工作面 粉尘处理 湿式过滤除尘器 复合立体喷雾 

分 类 号：TD714[矿业工程—矿井通风与安全]