首页|多组分天然气掺氢爆炸下限实验及模型研究

多组分天然气掺氢爆炸下限实验及模型研究

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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.
Experimental and model study on lower explosion limit of multi-component natural gas blended with hydrogen
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.

hydrogen-blended natural gaslower flammability limitlower explosion limitinitial pressureignition energyprediction model

荆琦、周硕、周芮、王丹、李云涛、张来斌、吕广宇

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中国石油大学(北京)安全与海洋工程学院,北京 102249

中国安全生产科学研究院 交通安全研究所,北京 100012

交通运输部水运科学研究院,北京 100088

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

博士后创新人才支持计划项目中国博士后科学基金项目中国石油大学(北京)科研启动基金项目中国安全生产科学研究院基本科研业务费专项资金项目

BX202304272023M7438742462023XKBH0172023JBKY07

2024

10.11731/j.issn.1673-193x.2024.07.006

中国安全生产科学技术
中国安全生产科学研究院

中国安全生产科学技术

CSTPCD北大核心
影响因子：1.119
ISSN：1673-193X
年,卷(期)：2024.20(7)