摘要
试验得到丙酮蒸气的爆炸极限为2.4%-12.8%。改变丙酮蒸气、二氧化碳或氮气的体积分数进行爆炸试验,研究二氧化碳和氮气对丙酮蒸气的抑爆性能。当二氧化碳体积分数超过35%时可燃混合气体退出爆炸范围,临界氧体积分数为12.4%;当氮气体积分数超过50%时可燃混合气体退出爆炸范围,临界氧体积分数为9.2%。试验结果表明二氧化碳对丙酮蒸气的抑爆效果优于氮气,从化学平衡、三元碰撞、链式反应方面分析其原因。
Acetone vapor explosion limit is 2.4% -12.8% by experiment.Experiments on explosion suppression performances of carbon dioxide and nitrogen were done by changing proportions of carbon dioxide and acetone vapor as well as nitrogen and acetone vapor.When the volume fraction of carbon dioxide reached 35%,mixed gas exited explosive range,while the critical oxygen concentration was 12.4%;when the volume fraction of nitrogen exceeded 50%,mixed gas exited explosive range,while the critical oxygen concentration was 9.2%.The results showed that the suppression explosion performance of carbon dioxide for acetone vapor was better than nitrogen.The reasons were analyzed from chemical equilibrium,ternary collision and chain reaction.
作者
何昆
石英杰
HE Kun SHI Ying-jie(The Chinese People＇s Armed Police Forces Academy, Hebei Langfang 065000, Chin)
出处
《消防科学与技术》
CAS
北大核心
2016年第8期1045-1047,共3页
Fire Science and Technology
基金
国家自然科学基金资助项目(51104164)
武警部队学院学科发展支持计划项目(XKFZ201610)
武警部队学院博士科研创新计划项目(BSKY201514)
关键词
丙酮蒸气
二氧化碳
氮气
抑爆
acetone vapor
carbon dioxide
nitrogen
explosion suppression
