摘要
利用CHEMKIN-PRO软件研究外加体积分数分别为1%、2%、4%氢气对甲烷爆炸过程中关键自由基的影响。结果表明:外加氢气对甲烷爆炸影响最大的基元反应为R38(H+O_(2)↔O+OH)和R84(OH+H_(2)↔H+H_(2)O)。外加氢气后,CO_(2)的生成量降低,H_(2)O的生成量增多,R155(CH_(3)+O_(2)↔O+CH_(3))和R156(CH_(3)+O_(2)↔OH+CH_(2)O)的敏感性降低,·H、·O、·OH等关键自由基的反应速率增大,导致甲烷爆炸强度增大,且外加氢气体积分数越大对甲烷爆炸的促进作用越大。
The effects of hydrogen with volume fraction of 1%,2%and 4%on the key free radicals in methane explosion were studied by using the CHEMKIN-PRO software.The results show that the elementary reactions with the greatest influence of hydrogen on methane explosion are R38(H+O_(2)↔O+OH)and R84(OH+H_(2)↔H+H_(2)O).After the addition of hydrogen,the production of CO_(2)decreased,the production of H_(2)O increased,the sensitivity of R155(CH_(3)+O_(2)↔O+CH_(3))and R156(CH_(3)+O_(2)↔OH+CH_(2)O)decreased,and the reaction rates of·H,·O,·OH and other key free radicals increased,resulting in an increase in the intensity of methane explosion.The bigger the volume fraction of hydrogen added,the greater the promotion effect on methane explosion.
作者
由博雯
杨喜港
洪子金
李如霞
廉刚宇
王佳佳
胡守涛
YOU Bowen;YANG Xigang;HONG Zijin;LI Ruxia;LIAN Gangyu;WANG Jiajia;HU Shoutao(School of Safety Engineering, Beijing Institute of Petrochemical Technology, Bejing 102617, China;Beijing Academy of Safety Engineering and Technology, Beijing 102617,China;School of Management Engineering, Capital University of Economics and Business, Beijing 100067, China)
出处
《北京石油化工学院学报》
2022年第2期67-74,共8页
Journal of Beijing Institute of Petrochemical Technology
基金
北京市教委科技计划项目(KM201910017001)
大学生创新训练项目(2021J00162)
北京市自然科学基金青年项目(2214071)。
关键词
作用机理
外加氢气
关键自由基
敏感性
反应速率
mechanism of action
plus hydrogen
key free radical
sensitivity
the reaction rate
