摘要
为了研究彩虹粉引燃危险性,应用固体燃烧速率试验仪初步甄别了彩虹粉传播燃烧能力,发现堆垛状彩虹粉固体火焰传播危险性较低;采用粉尘爆炸筛选装置,判定彩虹粉具有爆炸性;应用最小点火能测定装置测定彩虹粉粉尘云的最小点火能在24~60 m J之间,最优爆炸浓度为1 167 g/m3;应用快速筛选量热仪测试,彩虹粉在227℃开始分解;固体自燃点测试仪显示彩虹粉在250℃附近会发生自燃。向彩虹粉内添加不同比例相近粒径分布的食用盐粉体进行抑爆研究,结果证明食用盐对彩虹粉具有明显的抑爆效果。
To study the ignition risk of rainbow powder,the propagating combustion capacity of rainbow powder was preliminarily investigated by using the solid combustion rate tester,and it showed that the solid flame propagation risk of stacked rainbow powder was low. The explosiveness of the rainbow powder was judged by using the dust explosion screening device.The minimum ignition energy of rainbow powder cloud was measured to be 24-60 m J by using the minimum ignition energy measurement device,and the optimal explosive concentration was 1167 g/m3. The rainbow powder began to decompose at227℃ by using the rapid screening calorimeter. The spontaneous ignition of rainbow powder occurred around 250℃ by using the solid spontaneous ignition point tester. The edible salt powder with different proportions of similar size distribution was added to the rainbow powder to study the explosion suppression,and the results showed that the edible salt had obvious explosion suppression effect on the rainbow powder.
出处
《中国安全生产科学技术》
CAS
CSCD
北大核心
2017年第10期169-173,共5页
Journal of Safety Science and Technology
基金
河北省自然科学基金(E2017208083)
河北省科技计划项目(15275409D)
关键词
彩虹粉
自燃点
最小点火能
热分解
抑爆
rainbow powder
spontaneous ignition point
minimum ignition energy
thermal decomposition
explosion su p-pression
