Effects of inerting agent with different particle sizes onthe flame propagation of aluminum dust

Chen Xi; Chen Xianfeng; Zhang Hongming; Liu Xuanya; Zhang Ying; Niu Yi; Hu Dongtao

doi:10.11883/1001-1455(2017)04-0759-07

Volume 37 Issue 4

May 2017

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Article Navigation > Explosion And Shock Waves > 2017 > 37(4): 759-765

Chen Xi, Chen Xianfeng, Zhang Hongming, Liu Xuanya, Zhang Ying, Niu Yi, Hu Dongtao. Effects of inerting agent with different particle sizes onthe flame propagation of aluminum dust[J]. Explosion And Shock Waves, 2017, 37(4): 759-765. doi: 10.11883/1001-1455(2017)04-0759-07

Citation:

Chen Xi, Chen Xianfeng, Zhang Hongming, Liu Xuanya, Zhang Ying, Niu Yi, Hu Dongtao. Effects of inerting agent with different particle sizes onthe flame propagation of aluminum dust[J]. Explosion And Shock Waves, 2017, 37(4): 759-765. doi: 10.11883/1001-1455(2017)04-0759-07

Citation:

Chen Xi, Chen Xianfeng, Zhang Hongming, Liu Xuanya, Zhang Ying, Niu Yi, Hu Dongtao. Effects of inerting agent with different particle sizes onthe flame propagation of aluminum dust[J]. Explosion And Shock Waves, 2017, 37(4): 759-765. doi: 10.11883/1001-1455(2017)04-0759-07

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Effects of inerting agent with different particle sizes onthe flame propagation of aluminum dust

doi: 10.11883/1001-1455(2017)04-0759-07

1.
School of Resources & Environmental Engineering, Wuhan University of Technology, Wuhan 430070, Hubei, China
2.
Key Laboratory of Building Fire Protection Engineering and Technology of MPS, Tianjin 300381, China

Received Date: 2015-11-24
Rev Recd Date: 2016-05-03
Publish Date: 2017-07-25

Abstract

Abstract

To explore the influence of the inerting agent with different particle sizes on the flame propagation of the combustible industrial dust, by establishing a vertical dust combustion pipe experiment platform, we investigated the effects of the particle size of sodium bicarbonate on the characteristics of the burning flame propagation of aluminum powder. The results show that, under the condition of 30% mass fraction of sodium bicarbonate, the sodium bicarbonate powder with an average particle size of 30 μm has a good inhibitory effect on the flame propagation speed of aluminum powder with an average particle size of 15 μm, and there exists a correlation between the particle size of the inerting powder and the combustible industrial dust. The inerting inhibiting effect of sodium bicarbonate powder on the flame temperature of aluminum is inversely proportionate to its particle size. It was found that sodium bicarbonate powder can decrease the thickness of the preheating zone of aluminum powder flame, which decreases at first and then increases with the increase of the particle size of the sodium bicarbonate. Finally, we also examined the mechanism underlying the influence of sodium bicarbonate particle size on the flame propagation of aluminum powder.
- inerting agent,
- particle size,
- aluminum powder,
- burning,
- flame propagation

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References(23)

References

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