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 ›› 2024, Vol. 43 ›› Issue (10): 1413-1418.

• • 上一篇    下一篇

不同释放方式对全氟己酮抑制B类火焰的影响研究

韩志跃1, 任彦博1，2, 张信睿1, 和张航1   

  1. （1. 北京理工大学 爆炸科学与安全防护全国重点实验室，北京 100081； 2.枣庄市消防救援支队，山东 枣庄 277100）
  • 收稿日期:2024-04-29 修回日期:2024-06-18 出版日期:2024-10-15 发布日期:2024-10-15
  • 作者简介:作者简介：韩志跃（1984- ），男，河北辛集人，北京理工大学爆炸科学与安全防护全国重点试验室副教授，博士，主要从事燃爆安全研究，北京市海淀区中关村南大街5号，100081，hanzhiyue@bit.edu.cn。
  • 基金资助:
    基金项目：国家自然科学基金面上项目（22178026）

Study on the effect of different release methods on the inhibition of Class B flames by perfluorohexane

Han Zhiyue1, Ren Yanbo1,2, Zhang Xinrui1, He Zhanghang1   

  1. (1. Key Laboratory of Explosion Science and Safety Protection, Beijing Institute of Technology, Beijing 100081, China; 2. Zaozhuang Fire and Rescue Division, Shandong Zaozhuang 277100, China )
  • Received:2024-04-29 Revised:2024-06-18 Online:2024-10-15 Published:2024-10-15

摘要： 全氟己酮作为一种高效环保的灭火剂，需要依托良好的释放方式才能有效发挥其灭火性能。为了检验不同释放方式下全氟己酮的灭火效能，使用20 mL正庚烷油盘火作为火焰模型，分别利用1.2 MPa的氮气和2 g富氮产气物质来推动全氟己酮释放。讨论和比较了全氟己酮在两种释放方式下，对B类火焰的灭火效果、降温能力和作用机理。研究结果表明：施放的压力对全氟己酮灭火效果影响显著。相比于充装氮气的驱动方式，全氟己酮在富氮产气物质产生的高压气流作用下，能充分释放并及时扑灭火灾，在灭火时间、降温效果、火焰抑制上均有优异的表现。机理分析表明，在1.2 MPa的氮气充装驱动下，大部分的全氟己酮在释放过程中尚未与火焰接触便发生了挥发。而全氟己酮在仅2 g富氮产气物质产生的高压气流作用下，能够与火焰燃烧面充分接触，吸热分解并发挥化学抑制作用，快速阻断燃烧反应。

关键词: 全氟己酮, 释放方式, B类火焰, 灭火性能

Abstract: FK-5-1-12, known for its efficiency and cleanliness as a fire extinguishing agent, requires an effective release mode to fully utilize its capabilities. In order to assess the impact of different release modes on the performance of FK-5-1-12, a 20 mL n-heptane oil pan fire was used as a model for class B flames. The research utilized 1.2 MPa N2 filling and 2 g of nitrogen-rich gas-producing substances (NGS) to facilitate the release of FK-5-1-12. The research focused on comparing and analyzing the fire extinguishing effectiveness, cooling capacity, and mechanisms of FK-5-1-12 on class B flames under these two release modes. The research revealed that application pressure had a significant impact on the fire extinguishing effectiveness of FK-5-1-12. When released through the high-pressure gas flow generated by NGS, FK-5-1-12 showed better performance in extinguishing time, cooling effect, and flame suppression compared to the N2 drive release mode. Mechanistic analysis indicated that a substantial amount of FK-5-1-12 in the 1.2 MPa N2 drive did not reach the flame surface due to volatilization during release. In contrast, FK-5-1-12 effectively reached the burning surface of the flame with the influence of the high-pressure gas flow produced by only 2 g of NGS. Upon reaching the flame, FK-5-1-12 decomposed by absorbing heat, exerted a chemical inhibition effect, and rapidly halted the combustion reaction.

Key words: FK-5-1-12, release mode, class B flame, extinguishing performance