Influence Mechanism of Different Magnetic Wires on Hydrogen Explosion

HU Shoutao; HONG Zijin; YANG Xigang; NIE Baisheng; LI Ruxia; WANG Le; GAO Jiancun

doi:10.11858/gywlxb.20220611

Volume 37 Issue 1

Feb 2023

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Chinese Journal of High Pressure Physics > 2023 > 37(1): 015201.

HU Shoutao, HONG Zijin, YANG Xigang, NIE Baisheng, LI Ruxia, WANG Le, GAO Jiancun. Influence Mechanism of Different Magnetic Wires on Hydrogen Explosion[J]. Chinese Journal of High Pressure Physics, 2023, 37(1): 015201. doi: 10.11858/gywlxb.20220611

Citation:

HU Shoutao, HONG Zijin, YANG Xigang, NIE Baisheng, LI Ruxia, WANG Le, GAO Jiancun. Influence Mechanism of Different Magnetic Wires on Hydrogen Explosion[J]. Chinese Journal of High Pressure Physics, 2023, 37(1): 015201. doi: 10.11858/gywlxb.20220611

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Influence Mechanism of Different Magnetic Wires on Hydrogen Explosion

doi: 10.11858/gywlxb.20220611

HU Shoutao^{1, 2
,},
HONG Zijin¹,
YANG Xigang¹,
NIE Baisheng³,
LI Ruxia¹,
WANG Le⁴,
GAO Jiancun^{1, 2,*
,
,}

1.
School of Safety Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China
2.
Beijing Academy of Safety Engineering and Technology, Beijing 102617, China
3.
School of Resources and Safety, Chongqing University, Chongqing 400044, China
4.
School of Chemistry and Chemical Engineering, Nanjing University of Technology, Nanjing 210094, Jiangsu, China

Received Date: 15 Jun 2022
Rev Recd Date: 14 Jul 2022

Available Online: 06 Feb 2023

Issue Publish Date: 05 Feb 2023

Abstract

Abstract

For exploring the new technologies of hydrogen explosion prevention and the development of new barrier and explosion-proof materials, the effects of anti-magnetic aluminum wire and ferromagnetic nickel wire on premixed hydrogen-air explosion pressure were carried out. The CHEMKIN-PRO software was used to simulate the reaction path and temperature sensitivity changes during hydrogen explosion. The experimental results show that the two metal wires have a dual effect on the explosion of hydrogen-air mixture. When the volume fraction of hydrogen in the mixture is less than 20%, the metal wire material inhibits hydrogen explosion, and the larger the filling amount of the material, the stronger the inhibition. When the volume fraction of hydrogen in the mixed gas is higher than 25%, the two metal wires promote hydrogen explosion, and the larger the filling amount, the stronger the promotion. In the stage of promoting explosion, the effect of nickel wire is weaker than that of aluminum wire, in the explosion suppression stage, the explosion suppression effect of nickel wire is better than that of aluminum wire. The inhibition or promotion effect of metal materials on gas explosion is determined by the concentration and properties of gas and the filling amount of materials. Changing the filling amount of materials will lead to changes in the performance of inhibiting/promoting hydrogen explosion. The simulation results show that •H, •O, and •OH are the key free radicals in the process of hydrogen explosion, and the change of reaction rate and sensitivity directly determine the explosion intensity. Among the main elementary reactions that affect hydrogen explosion, R2 has the greatest impact on the formation rate of hydrogen, and R1 has the greatest impact on hydrogen and temperature during explosion. The main elementary reactions that affect the change of temperature sensitivity have a promoting effect on explosion. The influence mechanism of different magnetic wires on hydrogen explosion was revealed by experiment and numerical simulation.
- hydrogen explosion,
- magnetism,
- temperature sensitivity,
- filling amount,
- free radicals,
- explosion-proof materials

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References(29)

References

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Influence Mechanism of Different Magnetic Wires on Hydrogen Explosion

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