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 ›› 2020, Vol. 39 ›› Issue (1): 35-37.

• • 上一篇    下一篇

惰性气体对异丙醇爆炸抑制作用的试验研究

闫侠1,2,邵伟1,2,许巍巍1,2,梁峻1,2   

  1. 1. 广州特种机电设备检测研究院,广东广州510180;2. 国家防爆设备质量监督检验中心(广东),广东广州510760
  • 收稿日期:2019-09-10 出版日期:2020-01-15 发布日期:2020-09-17
  • 作者简介:闫侠(1989-),女,河南永城人,广州特种机电设备检测研究院、国家防爆设备质量监督检验中心(广东)工程师,硕士,主要从事危险化学品爆炸机理及事故防控技术研究,广东省广州市黄埔区黄埔东路3598 号,510760。
  • 基金资助:
    国家重点研发计划项目(2018YFC0808904)

Experimental study on the explosion suppression effect of inert gas on isopropanol

YAN Xia1 ,2,SHAO Wei1 ,2,XU Wei-wei1 ,2,LIANG Jun1    

  1. 1. Guangzhou Academy of Special Equipment Inspection & Testing, Guangdong Guangzhou 510180, China; 2. China National Quality Supervision and Testing Center of Explosion-proof Equipment (Guangdong), Guangdong Guangzhou 510760, China
  • Received:2019-09-10 Online:2020-01-15 Published:2020-09-17

摘要: 基于FRT 的爆炸极限测试装置,在50 ℃、0.1 MPa条件下测试了异丙醇蒸气在空气中的爆炸极限。加入二氧化碳或氮气,改变异丙醇蒸气与二氧化碳或氮气的体积分数进行试验,研究惰性气体对异丙醇蒸气的抑爆效果。结果表明:在异丙醇爆炸极限范围内,随着异丙醇蒸气浓度升高,二氧化碳或氮气的抑爆体积分数降低,且二氧化碳抑爆效果优于氮气;在惰性气体抑爆作用下,氧气与蒸气体积分数比值小于2.10 时,混合气体不发生爆燃。绘制了抑爆三角区,描述惰性气体对异丙醇爆炸特性的影响,并从活化能理论、链式反应理论等方面分析不同惰性气体的抑爆作用差异。

关键词: 异丙醇, 爆炸极限, 惰性气体, 抑爆, 体积分数

Abstract: Based on the FRT explosion limit test instrument, the explosion limit of isopropanol vapor in air was tested under the initial conditions of 50 ℃ , 0.1 MPa. Experiments on explosion suppression effect of carbon dioxide or nitrogen on for isopropanol vapor were done by changing the proportions of isopropanol vapor and carbon dioxide as well as isopropanol vapor and nitrogen. The results showed that the explosion suppression volume fraction of inert gas decreases with the increase of isopropanol vapor concentration, and the carbon dioxide suppression effect is better than that of nitrogen. Under the suppression action of inert gas, when the volume fraction ratio of oxygen to vapor is less than 2.10, the mixed gas does not deflagrate. The explosion suppression triangle was drawn to describe the influence of inert gas on the explosion characteristics of isopropanol, and the difference of explosion suppression effect of different inert gases was analyzed from the aspects of activation energy theory and chain reaction theory.

Key words: isopropanol, explosion limit, inert gas, explosion suppression, volume fraction