湍流状态下氢气爆炸极限的试验研究

发布时间：2018-06-27 20:26

本文选题：氢气 + 爆炸极限　；参考：《消防科学与技术》2017年08期

【摘要】：为研究氢气在流动状态下的爆炸特性,运用FRTA爆炸极限测试仪测试了不同湍流强度下氢气的爆炸极限。通过调节容器内搅拌子的转速表征不同的湍流强度,并运用二维旋涡模型分析氢气的爆炸极限与湍流强度的关系,得出爆炸上限、爆炸下限与湍流强度的拟合关系式。结果表明:宏观静止状态下氢气的爆炸极限为4.59%~73.67%;当搅拌子转速从0 rad/min增大到1 200 rad/min时,氢气的爆炸下限上升到5.011%,爆炸上限下降到72.402%。湍流强度增加时,氢气的爆炸下限升高,爆炸上限下降,爆炸范围变窄。
[Abstract]:In order to study the explosion characteristics of hydrogen in flowing state, the explosion limit of hydrogen under different turbulence intensity was measured by FRTA explosion limit tester. By adjusting the rotating speed of the agitator in the vessel to characterize the different turbulence intensity and using the two-dimensional vortex model to analyze the relationship between the explosion limit of hydrogen and the turbulent intensity, a fitting formula of the upper explosive limit, the lower explosion limit and the turbulence intensity is obtained. The results show that the explosion limit of hydrogen in macroscopic static state is 4.59 and 73.67, and when the speed of stirring increases from 0 rad/min to 1 200 rad/min, the lower limit of hydrogen explosion rises to 5.011 and the upper limit of explosion drops to 72.402. With the increase of turbulence intensity, the lower limit of hydrogen explosion increases, the upper limit of explosion decreases, and the range of explosion becomes narrow.
【作者单位】：中北大学化工与环境学院;
【基金】：山西省重点研发计划(指南)项目(201603D121012)
【分类号】：O643.221;X932

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