新型胶粘捕尘装置风速与捕尘效果实验研究

发布时间：2018-04-27 08:52

本文选题：气溶胶 + 胶粘捕尘　；参考：《煤炭科学研究总院》2014年硕士论文

【摘要】：煤炭作为我国主要能源的地位，在较长的时间内不会发生变化，煤炭产量将一直维持在较高的水平。我国煤炭开采主要为井工开采，煤矿井下采煤、岩巷、煤巷掘进等作业场所粉尘浓度居高不下，对作业人员造成职业伤害，特别是含有游离的二氧化硅的粉尘，是引起尘肺病的主要原因，煤尘还可以引起粉尘爆炸等，严重威胁到煤炭的安全生产和井下工人的身心健康。本文对粉尘的产生、危害进行了概述，报告了粉尘防治措施的现状，提出了将一种新型的胶粘剂引入到煤矿井下，并应用在产生高浓度粉尘的作业场所，匹配以合理的通风条件，形成一套新型的胶粘捕尘装置，为降低作业场所粉尘浓度提供了新的思路和方法。根据胶粘捕尘材料的捕尘机理，结合气溶胶力学、气固两相流理论，本文设计了胶粘捕尘装置试验台，并在实验室条件下进行了胶粘捕尘装置风速试验和捕尘效果试验。实验结果表明：胶粘捕尘装置对粉尘主要有收集和截留两方面作用，，具有较高的容尘量和较小的阻力损失；试验装置的风速试验，验证了试验台的设计符合捕尘效果试验中空气动力参数的要求，一定条件下，捕尘装置的总粉尘和呼吸性粉尘的除尘效率分别可达93.1%和80.8%。新型胶粘捕尘装置不仅对于总粉尘和呼吸性粉尘都有较高的捕尘效率，而且具有结构简单、节能环保等优点，能适应井下现代化快速作业。通过进一步试验研究和优化设计，胶粘捕尘装备将具有广阔的应用前景。
[Abstract]:The status of coal as the main energy source in China will not change for a long time, and the coal output will be maintained at a higher level. Coal mining in China is mainly for well workers. The dust concentration of coal mining, rock roadway and coal roadway driving in coal mine is high, which causes occupational injury to workers, especially the dust containing free silica. Coal dust can also cause dust explosion, which seriously threatens the safety of coal production and the physical and mental health of underground workers. In this paper, the generation and harm of dust are summarized, the present situation of dust prevention and control measures is reported, and a new type of adhesive is introduced into the underground coal mine and applied in the work place of producing high concentration dust. With reasonable ventilation conditions, a new type of adhesive dust catching device is formed, which provides a new way of thinking and method for reducing the dust concentration in the workplace. According to the dust capture mechanism of adhesive dust trapping material, combined with aerosol mechanics and gas-solid two-phase flow theory, this paper designed a test rig for glue dust trapping device, and carried out the wind speed test and dust capture effect test of adhesive dust trapping device under laboratory conditions. The experimental results show that the gummed dust trap has two main functions of dust collection and retention, high dust capacity and small resistance loss, and the wind speed test of the test device, It is verified that the design of the test rig accords with the requirements of aerodynamic parameters in the dust capture effect test. Under certain conditions, the dust removal efficiency of the total dust and respiratory dust of the dust catching device can reach 93.1% and 80.8% respectively. The new type of adhesive dust catching device not only has high dust capture efficiency for total dust and respiratory dust, but also has the advantages of simple structure, energy saving and environmental protection, and can adapt to modern and rapid underground operation. Through further experimental study and optimization design, the adhesive dust catching equipment will have a broad application prospect.
【学位授予单位】：煤炭科学研究总院
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TD714

【参考文献】