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摘要: 随着现代工业的发展，粉末技术得到了广泛应用，使得粉末产物日益增多。粉尘爆炸的事故也随之增多。粉尘爆炸往往造成重大人员伤亡和严重损失，已经越发成为工业安全不可忽视的重要问题。本论文以铝粉研究对象，用1.2升哈特曼管研究了点火延迟时间、粉尘粒度、粉尘浓度和粒度、粉尘浓度和初始压力对铝粉爆炸最大爆炸压力和最大爆炸压力上升速率的影响规律。最大爆炸压力和最大压力上升速率随点火延迟时间的增大而增大；随着粉尘粒度的减小而增加，且增加趋势明显；存在一个最佳粉尘浓度500g/m³，使最大爆炸压力和最大压力上升速率达到最大值；在哈特曼管实验压力0-0.7MPa范围内，随着初始压力的增加，最大爆炸压力和最大压力上升速率显著增加。并用VB开发了可视化应用程序—铝粉爆炸特性求算系统，给出了粉尘爆炸炸毁计算的方法和容器及建筑物的泄放面积计算方法，运用泄爆导管对泄爆后环境净化做了相应的处理。10773
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关键字： 粉尘爆炸；爆炸压力；压力上升速率；炸毁计算；泄放面积
Damage Evaluation of Dust Explosion and Environmental Purification Analysis
Abstract: With the development of modern industry, powder technology has been widely used, making the powder product is increasing. The dust explosion accidents are increasing. Dust explosion often cause significant casualties and serious loss, has become an important industrial safety issue can not be ignored. This paper to aluminum research object, l.2 Hartmann studied the influence law of the ignition delay time, granularity of dust, dust concentration and particle size, the dust concentration and the initial pressure of aluminum explosion to the maximum explosion pressure and the maximum explosion pressure rise rate. The maximum explosion pressure and the maximum pressure rise rate increases with the ignition delay time; increases with decreasing particle size, and the increasing trend is obvious; the existence of a 500g/m3 concentration best dust, the maximum explosion pressure and the maximum pressure rise rate reached a maximum value; in the Hartmann tube test pressure in the range of 0-0.7MPa, with the increase of initial pressure, the maximum explosion pressure and maximum rate of pressure rise significantly increased. With VB developed visualization application, characteristics of aluminum dust explosions and calculate system, gives the calculation method and dust explosion destroyed container and building discharge area calculation method, using the venting duct on explosion vent environment purification of the corresponding processing.
Keyword： Dust explosion; Explosion pressure; Pressure rising rate; Calculation of bombing; Relief area
目录
摘要 ⅱ
Abstract ⅱ
目录 ⅳ
1 绪论 1
1.1 粉尘爆炸 1
1.1.1 粉尘爆炸及其分类 1
1.1.2 粉尘爆炸条件 1
1.1.3粉尘爆炸机理 2
1.1.4 粉尘爆炸特性参数 2
1.2 粉尘爆炸研究现状 3
1.2.1 粉尘爆炸机理的研究 3
1.2.2 特性参数的研究 4
1.3 爆炸后处理工程 4
2 实验装置与实验方法 6
2.1 哈特曼粉尘爆炸实验装置系统的组成 6
2.2 哈特曼粉尘爆炸实验装置系统的功能 7
2.3 实验方法 8
3 铝粉爆炸特性的实验研究 11
3.1 实验数据处理方法 11
3.2 最大爆炸压力与最大压力上升速率的实验研究 12
3.2.1 点火延迟时间对最大爆炸压力和最大压力上升速率的影响 12