N2与CO2对合成气爆炸特性影响的实验研究  

Effect of inert gas addition on syngas explosion

作　　者：余明高[1,2] 韦贝贝 郑凯[1] YU Minggao;WEI Beibei;ZHENG Kai(State Key Laboratory of Coal Mine Disaster Dynamics Control,Chongqing University,Chongqing 400044,China;School of Safety Science Engineering,Henan Polytechnic University,Jiaozuo 454003,Henan,China)

机构地区：[1]重庆大学煤矿灾害动力学与控制国家重点实验室,重庆400044 [2]河南理工大学安全科学与工程学院,河南焦作454003

出　　处：《爆炸与冲击》2019年第6期153-160,共8页Explosion and Shock Waves

基　　金：国家自然科学基金(U1361205,51574111,50974055);煤矿灾害动力学与控制国家重点实验室自主研究课题(2011DA 105287-ZD201401)

摘　　要：为了研究惰性气体(氮气及二氧化碳)对合成气爆炸特性的影响,利用20L球形爆炸仪器,开展不同体积分数氮气与二氧化碳作用下不同当量比合成气的爆炸实验,从爆炸峰值压力、爆炸压力到达峰值时间、爆炸指数方面分析惰性气体对合成气爆炸特性的影响。研究结果表明:惰性气体体积分数的增加会降低合成气的爆炸压力和爆炸指数,推迟爆炸压力到达峰值的时间;在相同体积分数下,CO2比N2能更有效地降低合成气的爆炸峰值压力和爆炸指数,减小爆炸反应的剧烈程度,CO2在抑制合成气爆炸方面比N2的效果明显。In this study we investigated the effect of inert gas addition on the characteristics of the syngas explosion using 20 L spherical explosive device. Effects of different volume fraction of inert gas (CO2/N2) on the explosion parameters including the peak pressure, the delay of the peak pressure time, and the explosion index were obtained from the experiment. The results show that the delay of the peak pressure time of the syngas explosion rose higher, and the explosion peak pressure and the explosion index fell lower with the increase of the volume fraction of the inert gas;that CO2 had a stronger inhibition effect on syngas explosion than N2 because the peak pressure and the explosion index fell down more sharply with the addition of CO2 than of N2.

关 键 词：合成气 爆炸压力 当量比 惰性气体 

分 类 号：O381[理学—流体力学] X932[理学—力学]