静电放电对粉尘点燃的实验研究
毕业论文关键词： 粉尘；静电放电；静电漏电电流；静电危害
Experimental study of the dust ignition electrostatic and discharge
Abstract：In the process of dust in transport or ventilation and dust removal ,because of the dust particles or between particles and the wall collision and friction mutual,resulting in the charge buildup in pipeline, stimulate electrostatic discharge, causing a fire or dust explosion accident. The thesis about dust selecting is one of representative dust in the pharmaceutical industry is veterinary powder and the other one type dust also representative dust in food processing industry is flour .pipe material selection and commonly used transport and dust removal pipe galvanized iron pipe and PVC pipe of the same material ,through the experiment platform for the experimental research of dust electrostatic sensitive characteristics. Experiments mainly include dust and leakage current test and pipe friction cause electrostatic discharge spark sensitivity to dust clouds test two parts;Through establish the platform of dust and pipe friction testing different dust, pipes, pipe diameter, length and Angle of the influence of the static leakage current, it is concluded that the size of the electrostatic charge accumulation amount in the process of friction; Using electrostatic spark discharge of dust cloud light sensitivity test device, it is concluded that the sensitivity of the test dust was lit. Finally, combining with the test results and relevant research materials, the transport of dust and dust removal technology of antistatic existing evaluation management state, in view of the widespread electrostatic hidden trouble and has not been improved defect, put forward improvement schemes and countermeasures.
Keywords: Dust; electrostatic discharge; static leakage current; electrostatic hazards
目录
1.绪论 1
1.1 国内外粉尘静电放电研究背景 1
1.1.1粉尘静电放电理论基础现状 2
1.1.2粉尘静电放电起因 3
1.1.3粉尘静电放电的危害事故评价 4
1.2研究目的与意义 5
1.3研究方法 5
2. 粉体静电机理分析 6
3. 粉尘静电放电特性参数实验研究 8
3.1实验样品准备 8
3.1.1 样品粉尘 8
3.1.2 样品粉尘粒径分布 8
3.2静电漏电电流实验设计 8
3.2.1主要实验器材 9
3.2.2 实验内容 12
3.3静电敏感性实验设计（最小点火能） 12
3.3.1主要实验器材 13
3.3.2实验内容 15