Effect of Nitrogen and Water Vapor on Methane-Air Mixture ExplosionElementary Reaction and Suppression Mechanism

YANG Chun-Li; LIU Yan; HU Bin; LI Xiang-Chun; DONG Yan

doi:10.11858/gywlxb.2017.03.012

Volume 31 Issue 3

Apr 2017

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Chinese Journal of High Pressure Physics > 2017 > 31(3): 301-308.

YANG Chun-Li, LIU Yan, HU Bin, LI Xiang-Chun, DONG Yan. Effect of Nitrogen and Water Vapor on Methane-Air Mixture ExplosionElementary Reaction and Suppression Mechanism[J]. Chinese Journal of High Pressure Physics, 2017, 31(3): 301-308. doi: 10.11858/gywlxb.2017.03.012

Citation:

YANG Chun-Li, LIU Yan, HU Bin, LI Xiang-Chun, DONG Yan. Effect of Nitrogen and Water Vapor on Methane-Air Mixture ExplosionElementary Reaction and Suppression Mechanism[J]. Chinese Journal of High Pressure Physics, 2017, 31(3): 301-308. doi: 10.11858/gywlxb.2017.03.012

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Effect of Nitrogen and Water Vapor on Methane-Air Mixture ExplosionElementary Reaction and Suppression Mechanism

doi: 10.11858/gywlxb.2017.03.012

1.
Beijing Municipal Institute of Labour Protection, Beijing 100054, China
2.
School of Resource and Safety Engineering, China University ofMining & Technology (Beijing), Beijing 100083, China

Received Date: 20 Sep 2016
Rev Recd Date: 06 Feb 2017

Abstract

Abstract

To reveal the suppression chemical mechanism of nitrogen and water and to prevent the methane-air explosion more effectively, we designed different schemes with different concentrations of nitrogen and water vapor, and simulated the pressure, temperature and time to peak pressure of the methane-air explosion using a chemical kinetic software.We compared the reaction rates of main elementary reactions of different schemes, and analyzed the suppression chemical kinetics mechanism.The results show that both the nitrogen and the water vapor can effectively suppress the elementary reaction rate of the explosion, and the water vapor is more efficient than the nitrogen.Meanwhile, the concentration of free radical OH· will increase with water vapor as the inert gas.This research results can provide reference for the study of the explosion suppression of methane-air mixture.
- methane-air explosion,
- simulation,
- explosion suppression,
- reaction rate,
- elementary reaction

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References(26)

References

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Effect of Nitrogen and Water Vapor on Methane-Air Mixture ExplosionElementary Reaction and Suppression Mechanism

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Effect of Nitrogen and Water Vapor on Methane-Air Mixture ExplosionElementary Reaction and Suppression Mechanism

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