主管：中华人民共和国应急管理部
主办：应急管理部天津消防研究所
ISSN 1009-0029  CN 12-1311/TU
消防科学与技术

消防科学与技术 ›› 2023, Vol. 42 ›› Issue (9): 1192-1196.

• • 上一篇    下一篇

HFO-1234ze（E）对庚烷火焰抑制作用研究

尹怡璇, 杨克, 纪虹, 舒中俊   

  1. （常州大学 安全科学与工程学院，江苏 常州 213164）
  • 出版日期:2023-09-15 发布日期:2023-09-15
  • 作者简介:尹怡璇（2000- ），女，安徽宿州人，常州大学安全科学与工程学院硕士研究生，主要从事阻燃防火材料及技术方向的研究，江苏省常州市武进区滆湖中路1号，213164。
  • 基金资助:
    国家自然科学基金项目（51704041，52204204）；江苏省自然科学基金项目（BK20140264）；江苏省研究生实践创新计划项目（SJCX23_1587）

Study on the effect of HFO-1234ze(E) on heptane flame suppression

Yin Yixuan, Yang Ke, Ji Hong, Shu Zhongjun   

  1. (School of Safety Science and Engineering, Changzhou University, Jiangsu Changzhou 213164, China)
  • Online:2023-09-15 Published:2023-09-15

摘要： 随着《基加利修正案》的实施，目前广泛使用的以七氟丙烷为代表的氢氟碳化物气体灭火剂，即将被限制使用和逐步淘汰。环境友好的HFO-1234ze（E）作为一种新型制冷剂已得到广泛使用，作为含氟烯烃也属于替代灭火剂的筛选范围。本文采用杯式燃烧器测定了HFO-1234ze（E）的灭火体积分数；同时研究了空气流量对其灭火体积分数的影响，并分析了其可能的灭火机理。试验结果表明，HFO-1234ze（E）对庚烷火焰的临界灭火体积分数为11.5%，对火焰的抑制作用较强，受空气流量影响不大；其可能的主要灭火机理是以其高温分解产生的含氟基团捕捉燃烧反应的自由基，终止链反应而使火焰熄灭。因此，可将HFO-1234ze（E）作为环保的替代灭火剂开展深入研究。

关键词: HFO-1234ze（E）, 杯式燃烧器, 替代灭火剂, 临界灭火体积分数, 灭火机理

Abstract:  With the implementation of the Kigali Amendment, the currently widely used hydrofluoropropane gas fire extinguishing agent represented by heptafluoropropane, as a typical non-carbon dioxide greenhouse gas, will be restricted and phased out, and it is of great significance to find alternative new chemical gas fire extinguishing agents. The environmentally friendly HFO-1234ze(E) has been widely used as a new refrigerant, and it is also within the screening range of alternative fire extinguishing agents as a fluoroolefin. In this paper, the extinguishing concentration of HFO-1234ze(E) was determined by cup burner. At the same time, the influence of air flow on its fire extinguishing concentration was studied, and its possible fire extinguishing mechanism was analyzed. The experimental results show that the critical extinguishing volume fraction of HFO-1234ze(E) on heptane flame is 11.5%, which has a strong inhibitory effect on the flame and is not greatly affected by the air flow. Its possible main fire extinguishing mechanism is to use the fluorine-containing group produced by its high-temperature decomposition to capture the free radicals of the combustion reaction and terminate the chain reaction to extinguish the flame. Therefore, HFO-1234ze(E) can be further studied as an environmentally friendly alternative fire extinguishing agent.

Key words: HFO-1234ze（E）, cup burner, alternative fire extinguishing agents, critical extinguishing volume fraction, fire extinguishing mechanism