煤矿安全2017，Vol.48Issue(4)：16-19,4.DOI:10.13347/j.cnki.mkaq.2017.04.005
点火能量对煤粉爆炸行为的影响
Influence of Ignition Energy on Explosion Behavior of Pulverized Coal
崔瑞 1程五一1
作者信息
- 1. 中国地质大学(北京)工程技术学院,北京100083
- 折叠
摘要
Abstract
In order to investigate the influence of ignition energy on explosion characteristic parameters of pulverized coal,the experiment was carried out in the 20 L spherical explosive device to study the influence of different ignition energy on the explosion behavior of pulverized coal.The change law was emphatically discussed about the pulverized coal explosion brisance (the maximum explosion pressure and the maximum pressure rise rate) and the explosion suppression effect of inert medium with ignition energy.The results showed that the explosion pressure firstly increased and then decreased as the pulverized coal concentration increasing with the increase of ignition energy.Under the same concentration,the maximum explosion pressure and the maximum pressure rise rate increased linearly,and the influence of ignition energy on dust explosion pressure was more obvious at high concentration.Moreover,the explosion suppression effectiveness of inert medium decreased with the increase of ignition energy.It was suggested that 5 to 10 kJ ignition energy was the most appropriate to investigate the inhibition effect of inert medium on pulverized coal explosion.关键词
煤粉/粉尘爆炸/点火能量/惰性介质/抑爆Key words
pulverized coal/dust explosion/ignition energy/inert medium/explosion suppression分类
矿业与冶金引用本文复制引用
崔瑞,程五一..点火能量对煤粉爆炸行为的影响[J].煤矿安全,2017,48(4):16-19,4.
