SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2021, Vol. 40 ›› Issue (12): 131-140.DOI: 10.1016/j.cjche.2020.10.042

• Process Systems Engineering and Process Safety • Previous Articles     Next Articles

Combined effects of obstacle and fine water mist on gas explosion characteristics

Xiaoping Wen1, Mengming Wang1, Fahui Wang1, Minggao Yu2, Haoxin Deng1   

  1. 1. School of Mechanical and Power Engineering, Henan Polytechnic University, Jiaozuo 454003, China;
    2. State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China
  • Received:2020-08-08 Revised:2020-10-01 Online:2022-01-14 Published:2021-12-28
  • Contact: Minggao Yu,E-mail:13333910808@126.com
  • Supported by:
    This paper would like to acknowledge the financial supports of the National Key Research and Development Program of China (2018YFC0808103) and the National Natural Science Foundation of China (51774115, 51604095).

Combined effects of obstacle and fine water mist on gas explosion characteristics

Xiaoping Wen1, Mengming Wang1, Fahui Wang1, Minggao Yu2, Haoxin Deng1   

  1. 1. School of Mechanical and Power Engineering, Henan Polytechnic University, Jiaozuo 454003, China;
    2. State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China
  • 通讯作者: Minggao Yu,E-mail:13333910808@126.com
  • 基金资助:
    This paper would like to acknowledge the financial supports of the National Key Research and Development Program of China (2018YFC0808103) and the National Natural Science Foundation of China (51774115, 51604095).

Abstract: Combined effects of obstacles and fine water mist on a methane-air explosion of a semi-closed pipe were investigated experimentally. In this study, the diameter of the water mist, the location, and the number of obstacles was considered. The results demonstrated that 5 μm water mist present a significant suppression affected while 45 μm shows a slight promotion effected on a gas explosion of the condition without obstacles. In the presence of an obstacle, however, the inhibitory effect of 5 μm water veils of mist dropped significantly during flame propagation, and the effect of 45 μm water veils of mist changed from the enhancement of inhibition, and its inhibitory effect was significant. The inhibitory effect of 45 μm water veils of mist on gas explosion weakened firstly and then enhanced with the increasing distance between obstacle location from the ignition location as well as in several obstacles.

Key words: Fine water mist, Gas explosion suppression, Obstacle, Couple effects

摘要: Combined effects of obstacles and fine water mist on a methane-air explosion of a semi-closed pipe were investigated experimentally. In this study, the diameter of the water mist, the location, and the number of obstacles was considered. The results demonstrated that 5 μm water mist present a significant suppression affected while 45 μm shows a slight promotion effected on a gas explosion of the condition without obstacles. In the presence of an obstacle, however, the inhibitory effect of 5 μm water veils of mist dropped significantly during flame propagation, and the effect of 45 μm water veils of mist changed from the enhancement of inhibition, and its inhibitory effect was significant. The inhibitory effect of 45 μm water veils of mist on gas explosion weakened firstly and then enhanced with the increasing distance between obstacle location from the ignition location as well as in several obstacles.

关键词: Fine water mist, Gas explosion suppression, Obstacle, Couple effects