选煤厂并行带式输送机运转系统煤尘污染规律研究  

Study of coal dust pollution law of parallel belt conveyor running system in coal processing plant

作　　者：荆德吉[1,2] 马纪闯 张天 任帅帅[1,2] JING Deji;MA Jichuang;ZHANG Tian;REN Shuaishuai(College of Safety Science and Engineering,Liaoning Technical University,Fuxin 123000,China;Key Laboratory of Mine Thermodynamic Disasters and Control of Ministry of Education(Liaoning Technical University),Fuxin 123000,China)

机构地区：[1]辽宁工程技术大学安全科学与工程学院,辽宁阜新123000 [2]矿山热动力灾害与防治教育部重点实验室(辽宁工程技术大学),辽宁阜新123000

出　　处：《煤矿安全》2023年第1期16-21,共6页Safety in Coal Mines

基　　金：国家自然科学基金青年科学基金资助项目(51704146);辽宁省自然科学基金资助项目(2020-MS-304);辽宁省教育厅科学研究经费重点资助项目(LJKZ0323)。

摘　　要：为了解决选煤厂并行带式输送机运转系统粉尘污染问题,使用k-ε湍流模型和COMSOL软件,建立了黄玉川选煤厂并行带式输送机运转系统数值模型,计算获得了其风流的分布规律;分析诱导气流及走廊风速对其风流场的影响,确定了选煤厂并行带式输送机运转系统粉尘污染的风流影响机理。研究表明:走廊风速大小直接决定系统风流场的流速,走廊风速越大整个系统风流速度越大;诱导气流的大小决定风流场为单涡流风流场、双涡流风流场或无涡流风流场。针对性的提出方案减少因产生涡流导致粉尘污染严重的问题,设计针对性湿式降尘方案,并在黄玉川选煤厂安装使用,车间内全尘及呼尘降尘效率均达到90%以上。In order to solve the dust pollution problem of the parallel belt conveyor running system of the coal processing plant, a numerical model of the parallel belt conveyor running system of Huangyuchuan coal processing plant was established using the k-ε turbulence model and COMSOL software to calculate the distribution law of its wind flow, analyze the influence of the induced airflow and corridor wind speed on its wind flow field, and determine the mechanism of wind flow influence on dust pollution of the parallel belt conveyor running system of the coal processing plant. The study shows that the corridor wind speed directly determines the flow velocity of the system, the larger the corridor wind speed, the greater the velocity of the whole system;the size of the induced airflow determines whether the wind flow field is a single vortex field, a double vortex field or a vortex-free field.Targeted solutions are proposed to reduce the problem of serious dust pollution caused by the generation of vortex, and the targeted wet dust reduction solution is designed and installed in Huangyuchuan coal processing plant, where the dust reduction efficiency of both the full dust and the respirable dust in the workshop has reached over 90%.

关 键 词：选煤厂 并行带式输送机系统 降尘方案 风流分布 粉尘污染 

分 类 号：TD714[矿业工程—矿井通风与安全]