Effects of N2/CO2 on explosion characteristics of methane and air mixture

被引：101

作者：

Wang, Z. R. ^{[1
]}

Ni, L. ^{[1
]}

Liu, X. ^{[2
]}

Jiang, J. C. ^{[1
]}

Wang, R. ^{[3
]}

机构：

[1] Nanjing Tech Univ, Inst Safety Engn, Jiangsu Key Lab Urban & Ind Safety, Nanjing 210009, Peoples R China

[2] Univ Maryland, Dept Fire Protect Engn, College Pk, MD 20740 USA

[3] Zhejiang Univ Technol, Dept Safety Sci & Engn, Hangzhou 310014, Zhejiang, Peoples R China

来源：

JOURNAL OF LOSS PREVENTION IN THE PROCESS INDUSTRIES | 2014年 / 31卷

基金：

中国国家自然科学基金;

关键词：

Limiting oxygen concentration; N-2/CO2; mixture; Explosion strength; Flammability limits; Explosion suppression effect; NITROGEN DILUTION; FLAMMABILITY;

D O I：

10.1016/j.jlp.2014.06.004

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

An experimental apparatus for the methane and air mixture explosion with N-2/CO2 in a closed vessel was set up. A series of experiments have been performed to analyze the effects of N-2/CO2 on explosion strength, limiting oxygen concentration, flammability limits and explosion suppression. Results show that explosion strength decreases with the volume fraction of N-2/CO2 in the mixture. Limiting oxygen concentration decreases linearly with the volume fraction of N-2 in N-2/CO2 mixture. The flammability limits change linearly with the volume fraction of N-2/CO2 in the mixture. The higher the volume fraction of CO2 in N-2/CO2 mixture, the better the explosion suppression effect is. Based on experimental data, fitted equations and diagrams are made to predict methane flammability limits with N-2/CO2 under different volume fraction ratio of N-2 and CO2. The research results can be used as a reference for the inerting treatment design of methane explosion protection in process industries. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：10 / 15

页数：6

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