Explosion suppression effect of CH<sub>4</sub>/air by combined porous materials in a container piping system

SHAO Jiwei; ZHUANG Chunji; WANG Zhirong; HUANG Yunan; LU Wenting

doi:10.11883/bzycj-2017-0064

Volume 38 Issue 4

May 2018

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SHAO Jiwei, ZHUANG Chunji, WANG Zhirong, HUANG Yunan, LU Wenting. Explosion suppression effect of CH4/air by combined porous materials in a container piping system[J]. Explosion And Shock Waves, 2018, 38(4): 905-912. doi: 10.11883/bzycj-2017-0064

Citation:

SHAO Jiwei, ZHUANG Chunji, WANG Zhirong, HUANG Yunan, LU Wenting. Explosion suppression effect of CH₄/air by combined porous materials in a container piping system[J]. Explosion And Shock Waves, 2018, 38(4): 905-912. doi: 10.11883/bzycj-2017-0064

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Explosion suppression effect of CH₄/air by combined porous materials in a container piping system

doi: 10.11883/bzycj-2017-0064

1.
School of Safety Engineering, Ningbo University of Technology, Ningbo 315211, Zhejiang, China
2.
College of Safety Science and Engineering, Nanjing Tech University, Nanjing 210009, Jiangsu, China

Received Date: 2017-02-24
Rev Recd Date: 2017-04-08
Publish Date: 2018-07-25

Abstract

Abstract

The combinations which were structured from three categories of porous materials including six sub-categories, were tested for studying the suppression effects of the porous materials on the explosion of the combustible gas. The combustible gas was the methane-air mixture. The porous materials were fixed in a closed container piping system by using a self-made thin iron hoop, then the explosion suppression effects of a thin iron hoop, single-layer porous materials, double-layer combination porous materials and three-layer combination porous materials were compared. The results show that the thin iron hoop could enhance the gas explosive intensity and the maximum explosion pressure was achieved behind the iron hoop. The explosion suppression effects of the porous materials were obvious, and the explosion suppression effects of the double-layer combination porous materials were more stable compared to those of the single-type porous materials and the three-layer combination porous materials. The optimized combination of the porous materials for explosion suppression turned out to be Al₂O₃ 10 mm/30 PPI+SiC 20 mm/20 PPI, and the optimized combination of the porous materials for explosion pressure suppression turned out to be Al₂O₃ 10 mm/30 PPI+Fe-Ni 10 mm/90 PPI+SiC 20 mm/10 PPI.
- porous material,
- CH₄/air mixture,
- container piping system,
- explosion suppression effect,
- explosion intensity index

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References(16)

References

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