驱动间高压喷雾降尘机理及工艺技术研究

发布时间：2018-04-25 15:37

本文选题：皮带机 + 高压喷雾　；参考：《辽宁工程技术大学》2013年硕士论文

【摘要】：在驱动间内设置多个皮带拉紧装置来保证皮带具有足够的拉伸张力，防止皮带打滑。当皮带运行时，在速度梯度和滚筒摩擦力的双重作用下，就会使得大量的煤尘逸散到驱动间内，造成粉尘浓度超限，严重威胁煤矿的生产安全和工人的身体健康。随着我国对环保问题要求的日益增加，如何降低皮带运行过程中驱动间粉尘浓度，，成为一个较为迫切的问题。本文应用商业软件Fluent作为计算平台，采用欧拉-拉格朗日方法对粉尘场和液滴场进行模拟，通过模拟可以直观地看出在驱动间皮带机运载煤料过程中粉尘的逸散规律和喷雾后的降尘效果，同时对喷嘴外流场液滴颗粒粒径进行曲线拟合，粒径呈Rosin-Rammler分布，符合理论推导。结合大唐锡林浩特矿业公司的实际情况，将研究成果在M106驱动间进行现场工程应用，针对驱动间内不同产尘点的粉尘逸散规律，合理地设置喷雾地点及喷嘴个数，同时通过调节喷雾参数测定降尘效率，选出最优喷雾参数。此研究成果对于煤矿其它产尘点具有很好的借鉴意义。
[Abstract]:A plurality of belt tensioning devices are arranged in the drive room to ensure that the belt has sufficient tension to prevent the belt from slipping. When the belt is running, under the action of velocity gradient and roller friction, a large amount of coal dust will dissipate into the driving room, resulting in the dust concentration exceeding the limit, which seriously threatens the safety of coal mine production and the health of workers. With the increasing requirement of environmental protection in our country, how to reduce the dust concentration in the driving zone becomes an urgent problem. In this paper, the dust field and droplet field are simulated by Euler-Lagrangian method on the basis of commercial software Fluent. Through simulation, we can intuitively see the law of dust dispersion and the effect of dust control after spraying in the course of carrying coal in the driving belt conveyor. At the same time, the particle size of droplet in the nozzle outflow field is fitted by curve, the particle size is Rosin-Rammler distribution, which is in accordance with the theoretical derivation. Combined with the actual situation of Datang Xilinhaote Mining Company, the research results were applied in the field engineering of M106 driving room. According to the dust dispersion law of different dust producing points in the driving room, the spray location and the number of nozzles were reasonably set up. At the same time, the optimal spray parameters were selected by adjusting the spray parameters to determine the dust reduction efficiency. This research result has the very good reference significance to the coal mine other dust production spot.
【学位授予单位】：辽宁工程技术大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TD714.4

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