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Biotechnology
Year: 2015  |  Volume: 14  |  Issue: 2  |  Page No.: 92 - 96

Flame Behavior of Gasoline-Air Explosion Suppression by Non-Premixed Nitrogen in a Closed Tube

Yang Du, Yinchang Li, Peili Zhang, Linchuan Wu and Shuo Xiang    

Abstract: Flame behavior of the gasoline-air explosion suppression by non-premixed nitrogen was studied by carrying out experiments in a closed tube through a visualization experimental bench and high speed photos of the flame front for the suppression process were acquired by a high speed camera. Based on the analysis of these high speed camera photos, flame behavior and flame velocity of the suppression process were discussed. Results showed that the whole suppression process can be divided into inertia maintenance stage, suppression attenuation stage and diffusion extinguishment stage. The dominant mechanism for the nitrogen non-premixed suppression is that the energy of the high-energy radicals of the chemical reaction could be taken away by the nitrogen molecule in the suppression section, resulting in the main reaction chains which were changed into termination chains.

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