多孔介质和CO_(2)抑制低氢比甲烷爆炸的效应研究  

Effect of porous media and CO_(2)on inhibiting methane explosion with low hydrogen ratio

作　　者：郑露露 段玉龙 李泽欢 贾海林 Zheng Lulu;Duan Yulong;Li Zehuan;Jia Hailin(School of Safety Engineering,Chongqing University of Science and Technology,Chongqing 401331,China;Chong‑qing Key Laboratory of Oil and Gas Production Safety and Risk Control,Chongqing 401331,China;Henan Key Laboratory of Gas Geology and Gas Control,Henan Jiaozuo 454003,China)

机构地区：[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　　处：《消防科学与技术》2023年第8期1051-1056,共6页Fire Science and Technology

基　　金：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)。

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×1000 mm有机透明玻璃管道中,使用多孔介质和CO_(2)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CO_(2)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CO_(2)作用于火焰发展的不同时期,CO_(2)左侧贴壁喷气均不能使火焰于多孔介质处淬熄,CO_(2)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CO_(2)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CO_(2)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。To study the explosion suppression technology of the hydrogen‑doped natural gas in the pipeline,in a customized 100 mm×100 mm×1000 mm plexiglass pipe,the synergistic effect of using porous media and CO_(2)to suppress the methane explosion with a hydrogen content ratio of 10%was studied,and the effect of synergistic CO_(2)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 CO_(2)at different stages of flame development,the left side wall attached CO_(2)jet cannot successfully quench the flame at the porous medium.When CO_(2)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 CO_(2)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 gassolid dual explosion suppression mechanism of porous media cooperating with CO_(2)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.

关 键 词：CO_(2) 多孔介质 低氢比甲烷 协同抑爆 

分 类 号：X932[环境科学与工程—安全科学] TE832[石油与天然气工程—油气储运工程]