Reduced mechanism and analysis for thermal deflagration of C<sub>1</sub>-C<sub>4</sub> alkane mixture

Wu Song-lin; Du Yang; Li Guo-qing; Zhang Pei-li

doi:10.11883/1001-1455(2015)05-0641-10

Volume 35 Issue 5

Nov. 2015

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Wu Song-lin, Du Yang, Li Guo-qing, Zhang Pei-li. Reduced mechanism and analysis for thermal deflagration of C1-C4 alkane mixture[J]. Explosion And Shock Waves, 2015, 35(5): 641-650. doi: 10.11883/1001-1455(2015)05-0641-10

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Wu Song-lin, Du Yang, Li Guo-qing, Zhang Pei-li. Reduced mechanism and analysis for thermal deflagration of C₁-C₄ alkane mixture[J]. Explosion And Shock Waves, 2015, 35(5): 641-650. doi: 10.11883/1001-1455(2015)05-0641-10

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Reduced mechanism and analysis for thermal deflagration of C₁-C₄ alkane mixture

doi: 10.11883/1001-1455(2015)05-0641-10

1.
Department of Petroleum Supply Engineering, Logistical Engineering University, Chongqing 401311, China
2.
Department of Fundamental Studies, Logistical Engineering University, Chongqing 401311, China

Received Date: 2014-04-08
Rev Recd Date: 2014-05-18
Publish Date: 2015-10-10

Abstract

Abstract

For studying the chemical mechanism of thermal deflagration of gasoline-air mixture in the confined space, the temperature of the system, the concentration of main components and the generation rate of production in the deflagration process of C₁-C₄ alkane were simulated with CHEMICAL4.1 as a platform. Based on the analysis for the simulated data of the chemical mechanism, three results were obtained as follows. (1)By sensitivity analysis, rate-of-production analysis, path analysis and so on, the detailed oxidation mechanism of C₁-C₄ alkane was studied, and drew a reduced mechanism which consisted of 37 species and 80 reactions. The comparison of the two mechanisms was presented. (2) There existed three distinct stages in the thermal deflagration process based on the analysis for the mechanism, namely slow oxidation, rapid oxidation and reaction equilibrium. (3) In the whole chain reaction process, the reactions generating hydroperoxyl and hydrogen peroxide were the key reactions because the hydrogen and hydroxyl groups were largely generated from them so that they induced the deflagration happen finally.
- mechanics of explosion,
- reduced mechanism,
- sensitivity analysis,
- C₁-C₄ alkane,
- gasoline-air mixture,
- rate-of-production analysis

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References(17)

References

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