摘要
为评估掺氢天然气的燃爆风险,搭建天然气掺氢燃爆参数测试平台,通过开展不同初始压力及点火能量条件下天然气/氢气混合物的点火实验,研究多组分天然气爆炸下限的变化规律,建立混合物爆炸下限的预测模型。研究结果表明:初始压力由0.03 MPa增至0.1 MPa,体积分数4%的天然气起爆时所需最低掺氢量降低29.4%;点火能量由1 J增至50 J,体积分数4%的天然气起爆时所需最低掺氢量降低37.5%,本文提出的理论模型预测结果与实验数据相对误差低于16%。研究结果可为掺氢天然气的安全输送提供一定的科学参考。
In order to assess the explosion risk of hydrogen-blended natural gas,a testing platform for the explosion parameters of hydrogen-blended natural gas was constructed.The ignition experiments were conducted on natural gas/hydrogen mixture under different conditions of initial pressure and ignition energy,then the change law of the lower explosion limit of multi-component natural gas was studied,and a prediction model for the lower explosion limit of the mixture was developed.The results show that as the initial pressure increases from 0.03 MPa to 0.1 MPa,there is a reduction of 29.4%in the minimum hydrogen blending ratio required for natural gas explosion with a volume fraction of 4%.When the ignition energy increases from 1 J to 50 J,there is a reduction of 37.5%in the minimum hydrogen blending ratio required for natural gas explosion with a volume fraction of 4%.The relative error between the predicted results of theoretical model proposed in this paper and the experimental data is less than 16%.The research results can provide a scientific reference for the safe transportation of hydrogen-blended natural gas.
作者
荆琦
周硕
周芮
王丹
李云涛
张来斌
吕广宇
JING Qi;ZHOU Shuo;ZHOU Rui;WANG Dan;LI Yuntao;ZHANG Laibin;LYU Guangyu(College of Safety and Ocean Engineering,China University of Petroleum(Beijing),Beijing 102249,China;Institute of Transportation Safety,China Academy of Safety Science and Technology,Beijing 100012,China;China Waterborne Transport Research Institute,Beijing 100088,China)
出处
《中国安全生产科学技术》
CAS
CSCD
北大核心
2024年第7期43-48,共6页
Journal of Safety Science and Technology
基金
博士后创新人才支持计划项目(BX20230427)
中国博士后科学基金项目(2023M743874)
中国石油大学(北京)科研启动基金项目(2462023XKBH017)
中国安全生产科学研究院基本科研业务费专项资金项目(2023JBKY07)。
关键词
掺氢天然气
燃烧下限
爆炸下限
初始压力
点火能量
预测模型
hydrogen-blended natural gas
lower flammability limit
lower explosion limit
initial pressure
ignition energy
prediction model
