煤矿雾化除尘系统关键技术研究

Research on Key Technology of the Atomization and Dust Removal System in Coal Mine

为解决煤矿井下粉尘较大、现有除尘系统效果不稳定等问题,本文通过分析煤矿井下除尘系统,提出了一种螺旋式雾化除尘技术方案,运用流体力学和雾化学机理,设计了雾化除尘专用旋芯式喷嘴,整体结构简单。利用ANSYS workbench有限元分析软件搭建流固耦合仿真模型,研究不同孔径和压力下雾化喷嘴的模拟雾化效果,仿真结果表明,随着喷嘴孔径的增大,速度呈先提高后降低的趋势,并且随着压力的增大,颗粒的直径和数量呈一定的分布规律,当压力值为0.5 MPa、孔径为Φ1.0 mm时,雾化效果最好。

In order to solve the problems of large dust in underground coal mine and the unstable effect of the existing dust removal system,this paper puts forward a spiral atomization dust removal technology scheme by analyzing the underground dust removal system in coal mine.Using fluid mechanics and fog chemical mechanism,the special rotary core nozzle for atomized dust removal is designed,and the overall structure is simple.Using ANSYS workbench finite element analysis software to build flow-solid coupling simulation model,study the different aperture and atomization nozzle simulation atomization effect under pressure,simulation results show that with the increase of the nozzle aperture,the speed of decreasing,and with the pressure,the diameter of particles and quantity of certain distribution rule,simulation results show that when the pressure value is 0.5 MPa,aperture ofΦ1.0 mm,the atomization effect is best.