全氟己酮灭火剂临界灭火浓度测试研究  

Measurement of critical extinguishing concentration of dodecafluoro-2-methylpentan-3-one

作　　者：陈涛[1] 卢大勇[2] 胡成[1] 靖立帅 傅学成[1] 周晓猛[2] 

机构地区：[1]公安部天津消防研究所,天津300381 [2]南开大学环境科学与工程学院,天津300071

出　　处：《消防科学与技术》2015年第9期1210-1214,共5页Fire Science and Technology

基　　金：国家自然科学基金项目(51176078);国家"十二五"科技支撑计划项目(2014BAK17B02)

摘　　要：基于质量守恒原理,建立适用于液态灭火剂的改进型杯式燃烧器实验装置,并通过实验测试和理论计算,研究全氟己酮灭火剂对乙醇的临界灭火浓度。结果表明,灭火剂流量与蠕动泵转速呈线性关系,当蒸发器初始温度为90℃时,可确保不同流量下的全氟己酮快速汽化,进而实现灭火剂的连续稳定输送。全氟己酮对乙醇燃料的临界灭火浓度为5.6%,且受空气流量影响小。A modified cup burner apparatus was developed based on the principle of conservation of mass for testing the critical extinguishing concentration of dodecafluoro-2-methylpentan-3- one which is a liquid under normal temperature. The criticalex- tinguishing concentration of dodecafluoro-2-methylpentan 3 one onethanol fuel was studied through experimental tests and lheo- retical calculations. The results showed that there was a linear relationship between the fire extinguishing agent flow rate and peristaltic pump speed. The results also show that it could en- sure the liquid fire extinguishing agents under different flow rates rapid vaporization when the initial temperature of the e- vaporator was set at 90 C, which brings abouta continuous and stable delivery of the fire extinguishing agent. Measurements were performed on ethanol fuel burning flames using dodecaflu- oro-2 methylpentan-3 one as the extinguishing agent with dif ferent air flow rates. The results showed that the eritiealextin- guishing concentration of dodecafluoro-2-methylpentan 3 one onethanol fuel was 5.6%. The air flow has minimal effect on the criticalextinguishing concentration of the fire extinguishing agent.

关 键 词：全氟己酮 灭火剂 临界灭火浓度 杯式燃烧器 

分 类 号：X924.4[环境科学与工程—安全科学] TQ569[化学工程—炸药化工]