Effect of hydrogen ratio on inhibition property of wire mesh to propagation of the flame by methane premixed with hydrogen

CHENG Fangming; GOU Ziyan; LUO Zhenmin; GE Tianjiao; GE Hanzhang

doi:10.11883/bzycj-2023-0295

Volume 44 Issue 4

Apr. 2024

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CHENG Fangming, GOU Ziyan, LUO Zhenmin, GE Tianjiao, GE Hanzhang. Effect of hydrogen ratio on inhibition property of wire mesh to propagation of the flame by methane premixed with hydrogen[J]. Explosion And Shock Waves, 2024, 44(4): 045402. doi: 10.11883/bzycj-2023-0295

Citation:

CHENG Fangming, GOU Ziyan, LUO Zhenmin, GE Tianjiao, GE Hanzhang. Effect of hydrogen ratio on inhibition property of wire mesh to propagation of the flame by methane premixed with hydrogen[J]. Explosion And Shock Waves, 2024, 44(4): 045402. doi: 10.11883/bzycj-2023-0295

Citation:

CHENG Fangming, GOU Ziyan, LUO Zhenmin, GE Tianjiao, GE Hanzhang. Effect of hydrogen ratio on inhibition property of wire mesh to propagation of the flame by methane premixed with hydrogen[J]. Explosion And Shock Waves, 2024, 44(4): 045402. doi: 10.11883/bzycj-2023-0295

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Effect of hydrogen ratio on inhibition property of wire mesh to propagation of the flame by methane premixed with hydrogen

doi: 10.11883/bzycj-2023-0295

CHENG Fangming^{1, 2, 3
,},
GOU Ziyan^{1, 2
,
,},
LUO Zhenmin^{1, 2, 3},
GE Tianjiao¹,
GE Hanzhang^{1, 2}

1.
School of Safety Science and Engineering, Xi’an University of Science and Technology, Xi’an 710054, Shaanxi, China
2.
Xi’an Key Laboratory of Public Safety and Fire Rescue, Xi’an 710054, Shaanxi, China
3.
Shaanxi Province Industrial Process Safety and Emergency Rescue Engineering Technology Research Center, Xi’an 710054, Shaanxi, China

Received Date: 2023-08-16
Rev Recd Date: 2023-11-16

Available Online: 2024-01-11

Publish Date: 2024-04-07

Abstract

Abstract

In order to further reveal the characteristic of metal mesh to inhibit the flame propagation of hydrogen-methane premixed mixture, hydrogen and methane mixed gas with hydrogen mixing ratio of 0%, 10%, 20% and 30% were selected to conduct the experimental investigation of the effect of hydrogen mixing ratio inhibiting the fire processing through wire mesh with varied size in an explosion pipeline with an inner diameter of 60 mm and a total visible length of 1024 mm. Firstly, the flame propagation process was recorded by a high-speed camera, and the effect of hydrogen mixing ratio on fire resistance of wire mesh with different mesh numbers and the change of flame morphology were analyzed. Secondly, the average velocity of flame front movement was calculated according to the interval of 50 mm, and the flame propagation velocity within the visible area of the pipeline was analyzed. The interaction law between the metal wire mesh and the flame was mainly characterized by the flame propagation velocity on both sides of the metal wire mesh. The results show that with the increase of hydrogen content, the difficulty of flame retardancy of metal wire mesh increases, and the flame retardancy effect of metal wire mesh can transition from success to failure, and the impact on flame propagation may shift from inhibition to promotion. When the wire mesh fails to resist the fire, the wire mesh will cause the flame to fold and cause the flame to accelerate, but the first appearance of the tulip flame is delayed. With the increase of hydrogen mixing ratio, the acceleration phenomenon of flame passing through the wire mesh is more obvious. Increasing the mesh number of wire mesh can improve the fire resistance of wire mesh to hydrogen-methane premixed flame. The larger the mesh number, the stronger the fire resistance. More than 60 mesh wire mesh can effectively quench hydrogen and methane premixed flame.
- hydrogen-methane,
- flame inhibition,
- wire mesh,
- hydrogen mixing ratio,
- flame propagation velocity

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References

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