[1]曲忠伟,颜事龙,李学超.惰性介质对甲烷/空气预混气体爆炸极限的影响[J].爆破器材,2016,45(02):11-15.[doi:10.3969/j.issn.1001-8352.2016.02.003]
　QU Zhongwei,YAN Shilong,LI Xuechao.Effect of Inert Gas to Gas Explosion Limits of Methane/Air Premixed[J].EXPLOSIVE MATERIALS,2016,45(02):11-15.[doi:10.3969/j.issn.1001-8352.2016.02.003]
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惰性介质对甲烷/空气预混气体爆炸极限的影响()
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《爆破器材》[ISSN:1001-8352/CN:32-1163/TJ]

卷:
45
期数:
2016年02
页码:
11-15
栏目:
基础理论
出版日期:
2016-03-27

文章信息/Info

Title:
Effect of Inert Gas to Gas Explosion Limits of Methane/Air Premixed
文章编号:
5058
作者:
曲忠伟; 颜事龙; 李学超
安徽理工大学理学院（安徽淮南，232001）
Author(s):
QU Zhongwei; YAN Shilong; LI Xuechao
College of Science,Anhui University of Science and Technology (Anhui Huainan, 232001)
关键词:
爆炸力学; 爆炸极限; 绝热燃烧温度; CH4
Keywords:
mechanics of explosion; flammability limit; adiabatic flame temperature; CH4
分类号:
X932;TE88+2
DOI:
10.3969/j.issn.1001-8352.2016.02.003
文献标志码:
A
摘要:
以化学平衡和吉布斯自由能为基础，采用ChemKin数值模拟软件并选取临界温度1 450 K作为混合气体是否可燃的判别标准，研究了氮气、二氧化碳惰性介质对混合气体爆炸极限的影响。并在7 L爆炸容器内，对瓦斯和空气的混合气体的爆炸极限进行实测，得到了甲烷与二氧化碳（或氮气）按不同比例混合时在空气中的爆炸极限。结果表明：当甲烷与二氧化碳体积比为0.294时，爆炸上下限重合，当体积比小于0.294时，任何配比下均不被点燃。同时得出二氧化碳的抑爆能力强于氮气。
Abstract:
Based on chemical equilibrium and Gibbs free energy, ChemKin numerical simulation software was applied and the critical temperature of 1 450 K was selected as a criterion whether the gas mixture is combustible or not, the impact of N2 and CO2 as an inert medium on the explosion limit of mixed gas was studied. The explosion limits of gas and air mixed gas within the explosion container 7L were measured to obtain the explosive limits of CH4 and CO2 (or N2) mixed in different volume ratio. Results show that, when V(CH4)/V(CO2)=0.294, the upper and lower explosion are coinciding, and when V(CH4)/V(CO2) is less than 0.294, it would not be ignited in any ratio. And CO2 has stronger derived explosion suppression ability than N2.

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备注/Memo

备注/Memo:
收稿日期：2016-01-05
基金项目：安徽省自然科学基金资助项目（1508085ME85）；安徽省自然科学基金资助项目（1508085QF140）
作者简介：曲忠伟（1979~），男，硕士，副教授，主要从事预混气体传播特性、火焰淬熄研究。E-mail：wzqu@mail.ustc.edu.cn
更新日期/Last Update: 2016-03-25