Inhibition Characteristics of Typical Solid Explosion Suppressors on Acetylene-Air Explosion

XIA Yu; CHENG Yangfan; HU Fangfang; WANG Rui; ZHU Shoujun; SHEN Zhaowu

doi:10.11858/gywlxb.20220580

Volume 36 Issue 6

Dec 2022

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Chinese Journal of High Pressure Physics > 2022 > 36(6): 065201.

YU Yi, ZHANG Lei, JIANG Shengli, CHEN Jun. Decomposition of TATB at High Temperature Using Ab Initio Molecular Dynamics[J]. Chinese Journal of High Pressure Physics, 2018, 32(1): 010106. doi: 10.11858/gywlxb.20170621

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XIA Yu, CHENG Yangfan, HU Fangfang, WANG Rui, ZHU Shoujun, SHEN Zhaowu. Inhibition Characteristics of Typical Solid Explosion Suppressors on Acetylene-Air Explosion[J]. Chinese Journal of High Pressure Physics, 2022, 36(6): 065201. doi: 10.11858/gywlxb.20220580

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Inhibition Characteristics of Typical Solid Explosion Suppressors on Acetylene-Air Explosion

doi: 10.11858/gywlxb.20220580

XIA Yu^1
,,
CHENG Yangfan^{1, 2,*
,
,},
HU Fangfang^{1, 2},
WANG Rui¹,
ZHU Shoujun¹,
SHEN Zhaowu³

1.
School of Chemical Engineering, Anhui University of Science and Technology, Huainan 232001, Anhui, China
2.
School of Civil Engineering and Architecture, Anhui University of Science and Technology, Huainan 232001, Anhui, China
3.
School of Engineering Science, University of Science and Technology of China, Hefei 230027, Anhui, China

Received Date: 09 May 2022
Rev Recd Date: 28 May 2022

Available Online: 11 Oct 2022

Issue Publish Date: 05 Dec 2022

Abstract

Abstract

In order to reveal the inhibition effect of solid explosion suppressors on acetylene-air premixed gas explosion, a 20 L spherical explosion test system was used to study the impact of typical solid explosion suppressors of SiO₂, Al(OH)₃ and NaHCO₃ on the explosion characteristics of premixed acetylene-air gas. The results showed that the low-concentration SiO₂ (less than 300 g/m³) can promote the explosion intensity of acetylene-air, while the high-concentration SiO₂ has a significant explosion inhibition effect. The explosion inhibition effect of SiO₂, Al(OH)₃ and NaHCO₃ on acetylene-air explosion increases in turn. The explosion inhibition effects of SiO₂ and Al(OH)₃ are dependent on the heat absorption and decomposition of particles (generating Al₂O₃ and H₂O). By contrast, the explosion inhibition effect of NaHCO₃ is dependent on the gas-solid-liquid three-phase suppression characteristics as the decomposition of NaHCO₃ produced Na₂CO₃, H₂O and CO₂. Therefore, the NaHCO₃ possessed the optimal effect of explosion inhibition.
- explosion suppressor,
- acetylene,
- gas explosion,
- explosion pressure,
- pressure rise rate

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Inhibition Characteristics of Typical Solid Explosion Suppressors on Acetylene-Air Explosion

doi: 10.11858/gywlxb.20220580

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Inhibition Characteristics of Typical Solid Explosion Suppressors on Acetylene-Air Explosion

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