退役金属熔炼过程中的烟气流动特性及吸尘罩的优化  

Flue Gas Flow Characteristics and Optimization of Dust Hood in Decommissioned Metal Smelting Process

作　　者：罗鹏[1] 雷泽勇[1] 钟林[1] LUO Peng;LEI Ze-yong;ZHONG Lin(School of Mechanical Engineering,University of South China,Hengyang Hunan 421001,China)

机构地区：[1]南华大学机械工程学院,湖南衡阳421001

出　　处：《机械研究与应用》2022年第6期116-119,123,共5页Mechanical Research & Application

基　　金：国家重点研发项目:放射性固废清洁解控与安全处置技术(编号:2019YFC1907704)。

摘　　要：为降低金属在熔炼过程中产生的高温粉尘对作业人员的危害,通过了解熔炼车间的实际情况,利用数值模拟方法对熔炼过程中高温粉尘的运动轨迹和运动规律进行分析。基于Fluent粒子流场理论,采用DPM离散相模型,加载离散源,综合计算气固两相流,得出粉尘的运动规律。根据不同情况下的粒子逃逸情况,综合分析车间的流场变化。结果表明,通风量越大、散热越好,颗粒捕捉效果越好;吸尘罩高度越高,吸尘罩对粒子的捕获效率越低;粉尘颗粒越小,越容易受到影响,吸尘罩对其捕获效果越差。In order to reduce the harm of high temperature dust produced in metal smelting process to operators, through understanding the actual situation of the smelting workshop, the numerical simulation is used to analyze the movement track and movement law of high-temperature dust in the smelting workshop during the smelting process. Based on the theory of Fluent particle flow field, the DPM discrete phase model is adopted to load discrete sources and comprehensively calculate the gas-solid two-phase flow so as to obtain the dust movement law. According to the escape of particles under different conditions, the change of flow field in workshop is comprehensively analyzed. The results show that the larger the ventilation volume, the better the heat dissipation, and the better the particle capture effect;the higher the height of dust hood, the lower the trapping efficiency of the dust hood;the smaller the dust particles, the more susceptible it is, and the worse the capture effect of the dust hood.

关 键 词：熔炼车间 高温粉尘 数值模拟 吸尘罩 

分 类 号：TU834[建筑科学—供热、供燃气、通风及空调工程]