摘要
为了解决我国煤矿现有湿式除尘器存在的除尘效率低、内部喷嘴及滤网易堵塞等问题,基于径流式叶轮产生的风流在离心力的作用下沿径向运动的特点,提出一种集抽尘与净化于一体的径混式叶轮,并研发出一种由进水管、径混式叶轮、电机、导流叶片、脱水栅组成的矿用径混式旋流除尘器。该设备通过布水、初级雾化、二次雾化的三次捕尘过程以及导流叶片与脱水栅的脱水作用,实现了含污空气的净化。矿用径混式旋流除尘器在山东济宁二号煤矿洗煤厂进行了工程试验,结果显示:有人工作区域全尘和呼尘的除尘效率均达到96%以上,粉尘浓度降至4.2mg/m3以下,工作区域的作业环境得到明显改善,保障了工人的安全健康和煤矿的可持续发展。
Aiming at the low dust removal efficiency, and frequent clogging of internal nozzles and filters in the current wet dust collectors in coal mines of China, based on the characteristics of the air flow generated by the radial impeller moving in the radial direction under the action of centrifugal force, a radial mixing impeller that integrates dust extraction and purification was proposed, and a radial mixing cyclone dust collector for mine was developed, which is composed of water inlet pipe, radial mixing impeller, motor, guide vane, and dewatering grid. The equipment achieves the purification of polluted air through the three-stage dust collection process of water distribution, primary atomization and secondary atomization. The dust collector for mine was tested in the coal preparation plant of Shandong Jining No.2 Coal Mine, and the dust removal efficiency of total dust and respirable dust in the manned work area was above 96%, the dust concentration was brought down within 4.2 mg/m3, the water consumption was 0.9~1.35 m3/d, and the working environment in the work area was significantly improved.
作者
高扬
胡胜勇
刘长河
胡斐
李继华
朱晓彤
GAO Yang;HU Sheng-yong;LIU Chang-he;HU Fei;LI Ji-hua;ZHU Xiao-tong(Faculty of Safety and Emergency Management Engineering,Taiyuan University of Technology,Taiyuan 030024,China;Shandong New Sunshine Environmental Protection Equipment Co.,Ltd.,Zoucheng 273500,China)
出处
《煤炭工程》
北大核心
2021年第10期175-179,共5页
Coal Engineering
基金
山西省高等学校科技成果转化培育项目(2020CG008)。
关键词
煤尘治理
湿式除尘器
粉尘浓度
除尘效率
选煤厂
coal dust treatment
wet dust collector
dust concentration
dust removal efficiency
coal preparation plant
