Explosion suppression of porous materials in a pipe-connected spherical vessel |
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| Affiliation: | 1. School of Safety Engineering, China University of Mining &Technology, Xuzhou, 221116, China;2. School of Safety Engineering, Heilongjiang University of Science and Technology, Harbin, 150022, China;3. State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mine, Huainan, 232001, China;4. State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Xuzhou 221116, China;1. State Key Laboratory of Coal Resources and Safety Mining, China University of Mining and Technology -Beijing, Beijing, 100083, China;2. College of Resource and Safety Engineering, China University of Mining and Technology-Beijing, Beijing, 100083, China;3. School of Safety Engineering, North China Institute of Science and Technology, Sanhe, 065201, China;1. School of Safety Science and Engineering, Xi''an University of Science and Technology, Xi''an, Shaanxi, 710054, China;2. Xi''an Key Laboratory of Urban Public Safety and Fire Rescue, China;3. School of Translation Studies, Xi''an International Studies University, Xi''an, Shaanxi, 710128, China |
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| Abstract: | To study the suppression of different porous materials on the explosion of combustible gas, some experiments were implemented. The porous materials were categorized into three kinds, including six subcategories, and the explosion suppression characteristics of the thin iron hoop, one-layer porous materials, two-layer composite porous materials, and three-layer composite porous materials were studied and analyzed. The results show that a rarefaction wave appears in the spherical vessel during the rapid development stage of combustion explosion. Further, the thin iron hoop could enhance the gas explosion intensity. And the explosion intensity suppression effect of the porous materials is obvious, the best effects of one-layer, two-layer and three-layer porous materials are from Fe–Ni 10 mm/40 PPI, Fe–Ni 10 mm/90 PPI + Al2O3 10 mm/30 PPI, and Al2O3 10 mm/50 PPI + Fe–Ni 10 mm/40 PPI + SiC 20 mm/20 PPI, respectively. According to the surface morphology of the porous materials, the anti-sintering ability of the three categories of porous materials follows the order of Al2O3 > SiC > Fe–Ni. Besides, the thickness and pore size of the combined porous material was changed, which has a great influence on the explosion pressure and the explosion intensity. |
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| Keywords: | Porous material Explosion suppression Explosion intensity Anti-sintering |
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