Journal
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
Volume 164, Issue -, Pages 129-141Publisher
ELSEVIER
DOI: 10.1016/j.psep.2022.06.008
Keywords
Vented explosion; Distorted tulips; Quench; Overpressure; Explosion suppression
Categories
Funding
- Henan Polytechnic University [2022XQG-16, T2021-4]
- National Natural Science Foundation of China [51974107]
Ask authors/readers for more resources
Gas explosion is a common serious accident in underground coal mines and industrial production processes. Porous media has a significant effect on stopping the propagation of pressure and flame, reducing the explosion hazard. This study investigated the explosion suppression effect of Fe-Ni and Cu foams with different pore sizes and opening blockage ratios (OBR). The results showed that the OBR, together with pore size, influenced the flame quenching efficiency and the peak overpressure attenuation rate.
Gas explosion is a common serious accident in underground coal mines and industrial production processes. Porous media, due to its special cellular structure, has a significant effect on stopping the propagation of pressure and flame, which can effectively reduce the explosion hazard. In this study, the explosion suppression effect of Fe-Ni and Cu foams with different pore sizes (20 and 40 holes pores per inch (ppi)) was experimentally investigated and comparatively analyzed at opening blockage ratios (OBR) equal to 0.36, 0.64 and 0.84, respectively. The results demonstrate that Fe-Ni foam with 20ppi quenches the flame only under the OBR of 0.84, which indicates that the larger the OBR is, the better the explosion suppression effect is. However, under the OBR of 0.64, the porous media achieve an enhanced quenching efficiency and the shortest quenching time. In addition, when the vent area is relatively large, the obstacle effect of porous media is stronger than its pressure absorption capacity, thus leading to an increased pressure in the explosion area. The lowest peak overpressure attenuation rate, -25.9%, is observed for 40ppi Fe-Ni foam under the OBR of 0.36. In general, the OBR is positively correlated with the depressurization capacity. Among all the cases used in this study, the 20ppi Cu foam boasts the highest upstream and downstream peak overpressure attenuation rates under three OBRs, 0.86%, and 6.33%, respectively.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available