火炸药粉尘与工业粉尘爆炸特性试验对比研究

发布时间：2019-07-29 19:18

【摘要】：为了系统地认识火炸药粉尘和工业粉尘爆炸特性的区别,选用TNT和RDX两种火炸药粉尘以及玉米淀粉和煤粉两种工业粉尘作为研究对象,分别采用最小点火能量测试装置和20L球粉尘爆炸装置对上述四种粉尘的点火能量、爆炸压力、爆炸指数、爆炸下限浓度进行了系统研究。结果表明:四种粉尘的最小点火能量均随着浓度的增大呈现出先增大后减小的现象,与玉米淀粉和煤粉这两种工业粉尘相比,TNT和RDX这两种火炸药粉尘的最小点火能量更小,对电火花刺激更敏感,更容易点火;TNT和RDX爆炸压力和爆炸指数均随着粉尘浓度的增大而不断增大,而玉米淀粉和煤粉的爆炸压力和爆炸指数随着粉尘浓度的增大先增大后减小,TNT和RDX这两种炸药粉尘的爆炸压力和爆炸指数更高,爆炸破坏程度也更大;这四种粉尘的爆炸下限浓度为RDX玉米淀粉煤粉TNT,未表现出相应的变化规律。
[Abstract]:In order to systematically understand the difference between explosive dust and industrial dust explosion characteristics, TNT and RDX explosive dust and corn starch and pulverized coal industrial dust were selected as the research objects. The ignition energy, explosion pressure, explosion index and explosion lower limit concentration of the above four kinds of dust were systematically studied by using the minimum ignition energy test device and 20L ball dust explosion device, respectively. The results show that the minimum ignition energy of the four kinds of dust increases at first and then decreases with the increase of concentration. Compared with corn starch and pulverized coal, the minimum ignition energy of TNT and RDX explosive dust is smaller, more sensitive to EDM stimulation, and easier to ignite. The explosion pressure and explosion index of TNT and RDX increased with the increase of dust concentration, while the explosion pressure and explosion index of corn starch and pulverized coal increased at first and then decreased with the increase of dust concentration, the explosion pressure and explosion index of TNT and RDX explosive dust were higher, and the explosion damage degree of RDX corn starch pulverized coal TNT, was not corresponding to the lower explosion limit concentration of RDX corn starch pulverized coal.
【作者单位】：兵器工业安全技术研究所;中国五洲工程设计集团有限公司;苏州市公安局;中北大学化工与环境学院;
【基金】：国家自然科学基金(51472119)资助
【分类号】：X932

【相似文献】