Experimental study on suppression of gas deflagration by dry water materials

CHEN Xianfeng; FAN Ao; YUAN Bihe; LIAO Ruoyu; HE Song; DAI Huaming

doi:10.11883/bzycj-2018-0236

Volume 39 Issue 11

Nov. 2019

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CHEN Xianfeng, FAN Ao, YUAN Bihe, LIAO Ruoyu, HE Song, DAI Huaming. Experimental study on suppression of gas deflagration by dry water materials[J]. Explosion And Shock Waves, 2019, 39(11): 115401. doi: 10.11883/bzycj-2018-0236

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CHEN Xianfeng, FAN Ao, YUAN Bihe, LIAO Ruoyu, HE Song, DAI Huaming. Experimental study on suppression of gas deflagration by dry water materials[J]. Explosion And Shock Waves, 2019, 39(11): 115401. doi: 10.11883/bzycj-2018-0236

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Experimental study on suppression of gas deflagration by dry water materials

doi: 10.11883/bzycj-2018-0236

School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, Hubei, China

Received Date: 2018-07-02
Rev Recd Date: 2018-11-27

Available Online: 2019-09-25

Publish Date: 2019-11-01

Abstract

Abstract

In order to develop green, eco-friendly and highly efficient explosion suppression agent, hydrophobic fumed silica and deionized water are used as the raw materials to prepare novel dry water materials with " water encapsulation by solid” structure by a mechanically stirring method. A 20 L near-spherical explosive device is employed to test the explosion suppression effect of dry water materials on methane deflagration. The experimental results show that, when the mass of the added dry water materials is 2 g and 3 g, it has a promoting effect on the gas deflagration; when the mass of dry water materials is more than 4 g, it has a suppression effect on gas deflagration. The effect of particle size of dry water on the inhibition performance is investigated. The particle size of dry water materials has less influence on the maximum deflagration pressure, but it greatly influences the maximum deflagration pressure rising rate. The explosion suppression performances of the modified dry water materials are compared with that of pure dry water. The suppression effects are ordered from strong to weak as: urea-modified dry water materials, ammonium dihydrogen phosphate-modified dry water materials, ammonium polyphosphate-dry water materials and pure dry water materials.
- dry water materials,
- modifier,
- particle size,
- gas deflagration,
- explosion suppression

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References

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