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

• 作者: Xiaoping Wen Mengming Wang Fahui Wang Minggao Yu Haoxin Deng
• 来源期刊: 中国化学工程学报（英文版）
• 年，卷（期）: 2021,（12）
• 所属期刊栏目: Process Systems Engineering and Process Safety
• 页码范围: 131-140
• 页数: 10页
• 语种: 英文

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 suppres-sion 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.