多组分天然气掺氢爆炸下限实验及模型研究
Experimental and model study on lower explosion limit of multi-component natural gas blended with hydrogen
荆琦 1周硕 1周芮 1王丹 2李云涛 1张来斌 1吕广宇3
作者信息
- 1. 中国石油大学(北京)安全与海洋工程学院,北京 102249
- 2. 中国安全生产科学研究院 交通安全研究所,北京 100012
- 3. 交通运输部水运科学研究院,北京 100088
- 折叠
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1J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.
Abstract
In order to assess the explosion risk of hydrogen-blended natural gas,a testing platform for the explosion parame-ters of hydrogen-blended natural gas was constructed.The ignition experiments were conducted on natural gas/hydrogen mix-ture 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 re-sults 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.
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Key words
hydrogen-blended natural gas/lower flammability limit/lower explosion limit/initial pressure/ignition energy/prediction model引用本文复制引用
基金项目
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)
出版年
2024
NETL
NSTL
万方数据