风管内沉积颗粒物再扬起特性研究
毕业论文关键词: 沉积粉尘；扬尘方式；粉尘特性；扬尘运动规律
Study on the characteristics of deposited dust rose up in ventilating duct
Abstract: In this paper, the movement characteristics of gas and dust after deposition of dust in the air duct are studied, and the experimental results are also carried out in two aspects. Contents include: powder integrative characteristic experiment, the wind machine is given different incident wind speed and different incident wind type, capture dust trajectories using a camera system, winding dust cloud shape and determination of dust dust cloud movement distance. Then, according to the experimental results, the characteristics of the dust particles are tested, and the comprehensive characteristics of the dust are calculated according to the experimental data. And the dust movement law and the dust way of the dust are compared under different conditions.. Through this study, it is significant to study the dust raising characteristics of the dust in the wind pipe, It has great significance for dust removal and dust research.
Key words: Deposition of dust ;dust properties ;movement of dust
目录
第一章 绪论 1
1.1 二次扬尘的研究意义 1
1.2 二次扬尘的一般概念 2
1.3 风管内沉积粉尘运动影响因素 2
1.3.1 自然粗糙的影响 3
1.3.2 人工粗糙的影响 3
1.3.3 风速的影响 3
1.4 本文的研究的内容以及研究工作 4
1.4.1 研究内容 4
1.4.2 主要工作 4
第二章 二次扬尘理论基础 5
2.1 粉尘的理化特性 5
2.1.1 粉尘浓度 5
2.1.2 粉尘的分散度 5
2.1.3 粉尘的溶解度 5
2.1.4 粉尘的表面活性 5
2.1.5 粉尘的爆炸特性 6
2.2 除尘管道内颗粒物的受力情况分析 6
2.2.1 重力 6
2.2.2 拖拽力 7
2.2.3 浮力 7
2.2.4 扩散力 7
2.2.5 其它力 8
2.3 风管内颗粒物的运动机理分析 9
2.4 实验设备 10
2.4.1 BT-9300Z激光粒度分析仪 10
2.4.2 BT-1000粉体综合特性测试仪 11
2.4.3 其他设备 12
第三章 样品粉尘综合特性测试 14
3.1 湿度测试 14
3.1.1 检测依据 14
3.1.2 设备介绍 14
3.1.3 测试流程 14
3.1.4 湿度计算 14
3.2 粒度测试 15
3.2.1 粒径测试结果 15
3.3 粉尘流动性测试 17
3.3.1 测试项目与定义 17
3.3.2 操作规程 18
3.3.3 测试结果 21
上一篇：基于局部LARK的红外目标检测