微米活性液滴场致荷电效果及煤尘润湿性能研究  

Study on field charged effect of micron-activated droplets and wettability of coal dust

作　　者：王成 彦鹏 代振华 陆斌 葛少成 赵伟智 WANG Cheng;YAN Peng;DAI Zhenhua;LU Bin;GE Shaocheng;ZHAO Weizhi(Shuangma No.1 Mine,Ningxia Coal Industry Co.,Ltd.,Lingwu 750400,China;Taiyuan University of Technology,Taiyuan 030024,China)

机构地区：[1]宁夏煤业有限责任公司双马一矿,宁夏灵武750400 [2]太原理工大学,山西太原030024

出　　处：《煤矿安全》2024年第10期46-52,共7页Safety in Coal Mines

基　　金：国家自然科学基金资助项目(52174195,52274220);山西省基础研究计划资助项目(20220321221061)。

摘　　要：水雾荷电与溶液活性处理作为2种增效降尘手段,独立使用时均表现出良好的降尘效果。为探究二者联合使用对微细粉尘的沉降效果,选取十二烷基硫酸钠表面活性剂配置活性溶液,利用紫铜芒刺环形电极进行电晕荷电,在微米尺度液滴场致荷电的背景下,探究了微米活性液滴的荷电效果及其对无烟煤的润湿性。结果表明:活性溶液相较于纯水对电场的响应更为敏感;水雾荷电与溶液活性处理对于增强液滴破碎、减小液滴粒径及增强溶液润湿性能表现出协同效应;微米荷电活性水雾相较于普通水雾对无烟煤尘的捕集效率更高,对全尘、呼吸性粉尘的沉降效率分别高达91.77%、90.45%。Water mist charging and solution active treatment,as two kinds of efficient dust removal methods,showed good dust removal effect when they used independently.In order to explore the settling effect of the combined use of the two on fine dust,sodium dodecyl sulfate(SDS)surfactant was used to prepare the active solution,and copper burr ring electrode was used for corona charging.Under the background of micron droplet field charging,the charging effect of micron active droplet and its wettability to anthracite were investigated.The results show that the active solution is more sensitive to electric field than pure water.Water mist charging and solution activity treatment showed synergistic effects on enhancing droplet fragmentation,reducing droplet size and enhancing solution wettability.Compared with ordinary water mist,micron-charged active water mist has higher capture efficiency for anthracite dust,and sedimentation efficiency for total dust and respirable dust is up to 91.77%and 90.45%.

关 键 词：微米活性液滴 场致荷电 表面活性剂 液滴粒径 溶液润湿性 降尘效率 

分 类 号：TD714.4[矿业工程—矿井通风与安全] X964[环境科学与工程—安全科学]