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 ›› 2021, Vol. 40 ›› Issue (1): 16-19.

• • 上一篇    下一篇

惰性气体抑制丙酮蒸气爆炸实验对比研究

何昆1，石英杰1，李孝斌1，田国兵2   

  1. 1. 中国人民警察大学，河北廊坊065000；2. 平顶山市消防救援支队，河南汝州467599）
  • 出版日期:2021-01-15 发布日期:2021-01-15
  • 作者简介:何昆（1983-），女，中国人民警察大学防火工程学院火灾科学教研室讲师，硕士，主要从事防火材料研究工作，河北省廊坊市西昌路220 号,065000。
  • 基金资助:
    国家自然科学基金资助项目（51774296）；中国人民警察大学中青年教师科研创新计划项目（ZQN2021014）

Experimental comparative study on inhibition of acetone vapor explosion by inert gases#br#

HE Kun1，SHI Ying-jie1，LI Xiao-bin1， TIAN Guo-bing2   

  1. 1. China People's Police University, Hebei Langfang 065000, China; 2. Pingdingshan fire and Rescue Division,Henan Ruzhou 467599, China
  • Online:2021-01-15 Published:2021-01-15

摘要：

以丙酮为研究对象，利用HY-12474 型爆炸极限测试装置,测试丙酮蒸气的爆炸极限以及氮气、二氧化碳、七氟丙烷对丙酮蒸气爆炸的抑制效果。相比较而言，丙酮蒸气退出可爆范围，氮气、二氧化碳和七氟丙烷的浓度分别为32%、26%、13%。随着惰性气体的加入，氮气和二氧化碳使丙酮蒸气的火焰传播速度逐步降低。七氟丙烷的加入，在贫燃浓度时丙酮蒸气的火焰传播速度会有小幅度的提升，而后下降；在富燃浓度和化学计量浓度时，与氮气和二氧化碳的抑爆趋势相同，火焰传播速度一直降低。从数据上看，七氟丙烷的抑爆效率最高，但需要在合理的浓度范围内使用，二氧化碳次之，氮气最差。所得结论为气体抑爆剂的优选以及气体抑爆装置的研发提供了重要的理论依据。

关键词: 丙酮蒸气, 爆炸极限, 抑爆, 促爆

Abstract: This article selects acetone as the research object. We test acetone vapor explosion limit and the inhibition effect of nitrogen, carbon dioxide, heptafluoropropane by HY - 12474 type explosion limit test device. In comparison, when acetone vapor quit explosive range, the explosion inhibition concentrations of nitrogen, carbon dioxide and heptafluoropropane are 32%，26%， 13% respectively. With the addition of inert gas, nitrogen and carbon dioxide gradually reduce the flame propagation speed of acetone vapor. With the addition of heptafluoropropane, the flame propagation speed of acetone vapor will increase slightly, and then decrease as lean- burn condition; The flame propagation rate has been reduced in the same way as that of nitrogen and carbon dioxide as stoichiometric ratio and rich-burn condition. From the data point of view, heptafluoropropane has the highest explosion suppression efficiency, but it needs to be used within a reasonable concentration range, followed by carbon dioxide and nitrogen. The conclusion provides an important theoretical basis for the optimization of gas suppressant and the research and development of gas explosion suppression device.

Key words: acetone vapor, explosion limit, explosion suppression;explosion promotion