多孔介质和CO2抑制低氢比甲烷爆炸的效应研究

消防科学与技术 ›› 2023, Vol. 42 ›› Issue (8): 1051-1056.

多孔介质和CO2抑制低氢比甲烷爆炸的效应研究

郑露露1,2, 段玉龙1,2, 李泽欢1,2, 贾海林3

（1. 重庆科技学院安全工程学院，重庆 401331；2. 重庆市油气生产安全与风险控制重点实验室，重庆 401331；3. 河南省瓦斯地质与瓦斯治理重点实验室，河南焦作 454003）

出版日期:2023-08-15 发布日期:2023-08-15
作者简介:作者简介：郑露露(1997- )，女，重庆科技学院安全工程学院硕士研究生，主要从事油气爆炸动力学研究，重庆市高新区大学城东路20号，401331。
基金资助:
基金项目：河南省瓦斯地质与瓦斯治理重点实验室-省部共建国家重点实验室培育基地开放基金项目（WS2021A04）；重庆市教育委员会科学技术研究项目（KJQN202101503）；油气生产安全与风险控制重庆市重点实验室开放基金项目（cqsrc202111）；重庆市研究生科研创新项目（CYS22732）??

Effect of porous media and CO2 on inhibiting methane explosion with low hydrogen ratio

Zheng Lulu1,2, Duan Yulong1,2, Li Zehuan1,2, Jia Hailin3

(1. School of Safety Engineering, Chongqing University of Science and Technology, Chongqing 401331, China; 2. Chong? qing Key Laboratory of Oil and Gas Production Safety and Risk Control, Chongqing 401331, China; 3. Henan Key Laboratory of Gas Geology and Gas Control, Henan Jiaozuo 454003, China)

Online:2023-08-15 Published:2023-08-15

摘要/Abstract

摘要： 为了研究管道内掺氢天然气的抑爆技术,在定制的100 mm×100 mm×1 000 mm有机透明玻璃管道中，使用多孔介质和CO2抑制掺氢比为10%的甲烷爆炸的协同效应，探究了多孔介质协同CO2作用于火焰发展的不同时期以及喷气位置的变化对爆炸的影响。结果表明：多孔介质协同CO2作用于火焰发展的不同时期，CO2左侧贴壁喷气均不能使火焰于多孔介质处淬熄，CO2作用于指头形火焰，且火焰前峰处于喷头正下方时对火焰的传播有明显的抑制作用，而CO2右侧贴壁喷气可成功阻挡火焰传播，对火焰速度峰值、火焰平均速度以及爆炸超压峰值均起到良好的抑制作用，说明多孔介质协同CO2的气固两相双重抑爆机制效果优于单一多孔介质抑爆，为掺氢天然气管道工程的复合抑爆技术提供理论参考。

关键词: CO2, 多孔介质, 低氢比甲烷, 协同抑爆

Abstract: Abstract: To study the explosion suppression technology of the hydrogen?doped natural gas in the pipeline, in a customized 100 mm×100 mm×1 000 mm plexiglass pipe, the synergistic effect of using porous media and CO2 to suppress the methane explosion with a hydrogen content ratio of 10% was studied, and the effect of synergistic CO2 on the different stages of flame development and the change of jet position on the explosion was explored. The results indicate that when the porous medium cooperates with CO2 at different stages of flame development, the left side wall attached CO2 jet cannot successfully quench the flame at the porous medium. When CO2 acts on the fingertip flame and the flame front is directly below the nozzle,it has a significant inhibitory effect on the flame propagation. However, the CO2 right side wall attached jet can successfully block flame propagation and has a good inhibitory effect on peak flame velocity, average flame velocity, and explosion overpressure peak. This indicates that the gas-solid dual explosion suppression mechanism of porous media cooperating with CO2 is better than that of a single porous medium, providing a theoretical reference for the composite explosion suppression technology of hydrogen-doped natural gas pipeline engineering.

Key words: CO2 , porous media, low hydrogen ratio methane, collaborative explosion suppression

郑露露, 段玉龙, 李泽欢, 贾海林. 多孔介质和CO2抑制低氢比甲烷爆炸的效应研究[J]. 消防科学与技术, 2023, 42(8): 1051-1056.

Zheng Lulu, Duan Yulong, Li Zehuan, Jia Hailin. Effect of porous media and CO2 on inhibiting methane explosion with low hydrogen ratio[J]. Fire Science and Technology, 2023, 42(8): 1051-1056.