丙烷-氧气预混气体的火焰传播及点火特性  

Flame Propagation and Ignition Properties of Propane-Oxygen Premixed Gas

作　　者：章文义 李玉艳[2,3] 潘峰 郑俊杰[2,3] ZHANG Wenyi;LI Yuyan;PAN Feng;ZHENG Junjie(Command and Tactic Department,Jiangsu Police Institute,Jiangsu Nanjing,210031;School of Chemical Engineering,Nanjing University of Science and Technology,Jiangsu Nanjing,210094;National Quality Supervision and Inspection Center for Industrial Explosive Materials,Jiangsu Nanjing,210094)

机构地区：[1]江苏警官学院警务指挥与战术系,江苏南京210031 [2]南京理工大学化工学院,江苏南京210094 [3]国家民用爆破器材质量监督检验中心,江苏南京210094

出　　处：《爆破器材》2019年第4期27-32,共6页Explosive Materials

摘　　要：采用有机玻璃管装置,研究了丙烷-氧气预混气体在管道中的火焰传播特性及最小点火能。研究表明:3种惰性气体(CO 2、N 2、Ar)均明显降低了预混气体火焰在管道中的加速进程;其中,CO 2抑制效果最为显著,其次是N 2和Ar。点火敏感电极间距为2 mm。最小点火能(E)随混合气体初始压力的增大而减小,初始压力为100 kPa时,0.16 mJ<E<0.32 mJ;当压力降至30 kPa时,2.00 mJ<E<3.00 mJ。Flame propagation characteristics and the minimum ignition energy of propane-oxygen premixed gas were studied using PMMA tube.The results show that all the three inert gases significantly reduce the acceleration process of the flame in the tube,among which the inhibition effect of CO 2 is the most significant,followed by N 2 and Ar.The ignition energy sensitive electrode gap is 2 mm.The minimum ignition energy(E)decreases with the increase of the initial pressure of the mixture.When the initial pressure is 100 kPa,there is 0.16 mJ<E<0.32 mJ.When the pressure drops to 30 kPa,there is 2.00 mJ<E<3.00 mJ.

关 键 词：火焰传播 最小点火能 抑制效果 初始压力 

分 类 号：TQ221.13[化学工程—有机化工]