综掘工作面干式过滤除尘技术实验研究及实践  

Experimental investigation and application of dry-type filtering dust collection technology in fully mechanized excavation face

作　　者：周福宝[1,2] 李建龙[2] 李世航[2] 王飞[2] 

机构地区：[1]中国矿业大学煤矿瓦斯与火灾防治教育部重点实验室,江苏徐州221116 [2]中国矿业大学安全工程学院,江苏徐州221116

出　　处：《煤炭学报》2017年第3期639-645,共7页Journal of China Coal Society

基　　金：国家自然科学基金资助项目(51134023);中组部青年拔尖人才支持计划资助项目

摘　　要：煤矿粉尘易诱发严重的矿工尘肺病和煤尘爆炸,然而现有的湿式除尘技术净化效率普遍不高。针对煤矿综掘工作面环境条件特点,分析认为应用于综掘工作面的干式除尘技术的主要影响因素为空气喷雾、清灰均匀性以及清灰策略等。为此,构建了干式过滤除尘实验系统和样机,测试发现适度的喷雾量(2 200 m L/min)有利于提高过滤性能;滤筒内安装正椎体或柱锥体可以改善喷吹流场;而正序和逆序清灰策略则分别更有利于改善清灰效果和降低粉尘排放浓度。研制了KCG-200D干式除尘器并应用于葛泉煤矿,现场全尘和呼尘除尘效率分别为97.39%和96.41%。The coal mine dust induced an increasing coal miner＇s pneumoconiosis and serious coal dust explosion.However,the existing wet dust collection technologies are generally inefficient. According to the environmental conditions of fully-mechanized excavation face in coal mine,the main influencing factors of dry-type filtering dust collection technology in fully-mechanized excavation face are water spraying in the air,uniformity of cleaning and cleaning strategy,etc.Therefore,dry-type filtering dust collection experiment system and prototype are built in this study. An experimental study shows that a moderate amount of spray（2 200 m L/min） is beneficial to improve the filtration performance of the dust collection system.The installation of the normal cone and column cone in the filter cartridge can improve the injection flow field.The positive and reverse cleaning mode is more conducive to improve the cleaning effect and reduce the dust emission concentration respectively. A dry-type filtration dust collector KCG-200 D is developed and applied in the Gequan coal mine.The total and respirable dust collection efficiencies are 97.39% and 96.41% at the scene.

关 键 词：综掘工作面 干式除尘 过滤 喷雾 清灰均匀性 清灰策略 

分 类 号：TD714[矿业工程—矿井通风与安全]