摘要
为研究制药工业粉尘爆炸事故机制，以典型药物替米考星为对象，分析药物粉尘爆炸和火焰传播特性。主要采用20L球形爆炸装置、最小点火能（MIE）装置和颗粒图像测速仪（PIV）等设备，试验测试替米考星粉尘的爆炸下限、最大爆炸压力、爆炸指数、MIE和火焰传播速度等指标。结果表明，平均粒径为50μm的替米考星球形颗粒粉尘，其爆炸下限质量浓度为20～30g／m3，最大爆炸压力为0．89MPa，最大爆炸指数为25．80MPa·m／s，MIE为13．20mJ；当粉尘质量浓度为416．67g／m3时，喷粉初始压力为0．5MPa，喷粉点火87．5m3后，竖直管道中火焰传播速度达到最大值34m／s。
Dust explosion accidents occur frequently but often are neglected in the pharmaceutical industry. Explosion and flame propagation characteristics of typical drug tilmicosin dust were studied by using a 20 L sphere explosion test device, MIE test device and a particle image velocimetry（PIV） test device. The lower explosive limit, maximum explosion pressure, maximum explosion index, MIE and flame propagation speed were obtained. The results show that the average diameter of tilmicosin shaped particles is 50μm, its lower explosive limit is 20-30μg/m3, its maximum explosion pressure is 0.89 MPa, its maximum explosion index is 25.80 MPaom/s, and its MIE of experiment is 13.20 mJ, and that when the dust concentration is 416.67 g/m3 and initial pressure is 0.5 MPa, the maximum flame propagation speed in a vertical pipeline reaches 34 m/s at 87.5 ms after powder spraying powder ignition.
出处
《中国安全科学学报》
CAS
CSCD
北大核心
2016年第11期59-64,共6页
China Safety Science Journal
基金
国家自然科学基金资助(51304137)
