化工学报 ›› 2022, Vol. 73 ›› Issue (10): 4754-4761.DOI: 10.11949/0438-1157.20220795
雷明川(), 喻健良(), 闫兴清, 吕先舒, 侯玉洁, 詹潇兵
收稿日期:
2022-06-07
修回日期:
2022-07-14
出版日期:
2022-10-05
发布日期:
2022-11-02
通讯作者:
喻健良
作者简介:
雷明川(1998—),男,硕士研究生,1039024894@qq.com
基金资助:
Mingchuan LEI(), Jianliang YU(), Xingqing YAN, Xianshu LYU, Yujie HOU, Xiaobing ZHAN
Received:
2022-06-07
Revised:
2022-07-14
Online:
2022-10-05
Published:
2022-11-02
Contact:
Jianliang YU
摘要:
常温常压条件下,在内径52 mm的不锈钢管道中开展了惰性气体对氢气/空气(H2/air)爆轰的抑制实验研究,通过改变当量比(0.6、0.8、1.0、1.2、1.4)和惰性气体种类(CO2、N2、Ar)探讨了三种惰性气体对爆轰火焰速度的影响。结果表明,H2/air爆轰通过可燃气与惰性气体分界面后,爆轰波发生解耦,火焰速度大幅度下降。整个速度下降过程分为快速下降、波动缓慢衰减、火焰消失三个阶段。三种惰性气体中CO2的抑制效果最明显,其次是Ar和N2。相较比热容差异影响,Ar和N2的分子量差异在爆轰抑制中起到主导性作用。贫燃和富燃条件下爆轰在惰性介质中衰减程度均比化学计量比工况下明显,其中富燃条件下爆轰在惰性介质中的衰减更为明显。
中图分类号:
雷明川, 喻健良, 闫兴清, 吕先舒, 侯玉洁, 詹潇兵. 惰性气体对氢气/空气爆轰传播的抑制作用[J]. 化工学报, 2022, 73(10): 4754-4761.
Mingchuan LEI, Jianliang YU, Xingqing YAN, Xianshu LYU, Yujie HOU, Xiaobing ZHAN. Inhibition of hydrogen/air detonation propagation by inert gases[J]. CIESC Journal, 2022, 73(10): 4754-4761.
气体种类 | 最长传播时间/ms | 消失测点距离/mm |
---|---|---|
CO2 | 9.894 | 2200 |
N2 | 13.161 | 2700 |
Ar | 9.476 | 2200 |
表1 爆轰在惰性气体段内传播情况
Table 1 Detonation propagation into inert gas zone
气体种类 | 最长传播时间/ms | 消失测点距离/mm |
---|---|---|
CO2 | 9.894 | 2200 |
N2 | 13.161 | 2700 |
Ar | 9.476 | 2200 |
图6 贫燃、富燃条件下爆轰火焰传入三种惰性气体段速度变化
Fig.6 Velocity variation of detonation flame propagation into three inert gas zones under fuel-lean and fuel-rich conditions
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