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摘要：随着国内外粉体技术的不断发展,粉体材料越来越广泛应用于国民经济的各种行业中。粉体在工艺生产、运输、加工、混合过程中，由于粉体或粉体与设备、容器之间相互接触、摩擦和撞击，会带上大量的静电。粉尘静电的实质是粉尘存在的剩余电荷。电荷是所有的有关静电现象本质方面的物理量，电压、电流等有关的量都是由于电荷的存在或电荷的移动而产生的物理量。静电放电可形成高电位、强电场和瞬间大电流同时作为点火源能在瞬间释放大量的能量，极可能引起可燃性粉尘着火或爆炸事故。47079
本文基于特可新这种典型的兽药粉尘和液态水。首先通过兽药粉放电火花敏感性的定量测定药粉的静电敏感性，继而通过药粉物理特性和热分析进一步深入研究兽药粉的静电敏感性，再通过搭建模拟工艺过程中实验平台，采用特可新由上往下喷粉和特可新由下往上喷粉以及不同喷粉速率两种实际状态下进行实验研究，前后对比分析兽药粉存在的静电安全隐患。
结果表明：特可新药粉的粉尘云放电火花敏感性随质量浓度的变化，呈现二次曲线的变化趋势。特可新和水在喷粉混合过程中，由上往下喷粉的漏电电流整体略大于由下往上喷粉时的漏电电流；粉液喷射混合的漏电电流的测试，漏电电流明显比单项测试特可新大很多。以及增加喷粉速率产生的静电电流也会明显增大。
毕业论文关键词：静电放电、兽药粉、粉尘摩擦、电火花敏感性。
The research on ESD characteristics of Tilmicosin and water
Abstract：With the development of domestic and foreign powder technology, various industries powder material is more and more widely used in various national economic sectors. In the process of powder production , transportation and processing, as contact friction and impact of the powder or powder and equipment, containers, powder will bring a lot of static electricity. The essence of dust electrostatic is residual electric charge. Electric charge is all physical in nature about electrostatic phenomenon. voltage, current and other related quantity is a physical quantity caused by movement of the electric charge. Electrostatic discharge can form high potential, strong electric field and instantaneous large current ,so it as the ignition source can release large amounts of energy at the moment, most probably caused by combustible dust ignition or explosion.
In this paper, the quantitative test of spark sensitivity was carried out by using a typical drug dusts, further study on the physical properties and thermal analysis of veterinary drug powder to study its electrostatic sensitivity. And building simulation process experimental platform, the experimental study on by using the top-down and bottom-up dusting powder and different dusting rates. Finally, the article analyzes the existence of the electrostatic safety hidden trouble of veterinary drug powder.
The results show that the MIE of single Veterinary medicine powder along with the change of mass concentration showed a trend of the change of the conic. In the kind of powder dusting process, the leakage current is larger than the dusting down slightly from the bottom to the leakage current on the powder. Powder injection mixed leakage current is more obvious than many single test. Increasing dusting rate static electricity generated currents will be increased significantly.
Key words: Electrostatic discharge, Veterinary medicine powder, Dust friction, Electric spark sensitivity
目录
第1章 绪论 6
1.1研究背景介绍 6
1.2国内外对于粉尘爆炸事故科研发展现状 9
1.3.粉体静电学国内外科研发展现状