爆炸与冲击2025，Vol.45Issue(8)：1-8,8.DOI:10.11883/bzycj-2024-0277
高温高压下CH4/C2H6及C2H6/H2O在纯氧中的爆炸上限
The upper explosion limits of CH4/C2H6 and C2H6/H2O mixtures at elevated temperatures and pressures in oxygen
摘要
Abstract
The explosion limit serves as a key parameter for assessing explosion risks and prevention strategies of combustible gases.Through a self-developed 5-liter experimental platform for flammable gas explosion characteristics,the upper explosive limits(UELs)of CH4/C2H6 and C2H6/H2O gas mixtures under high-temperature and high-pressure conditions were investigated,revealing the influence mechanisms of methane blending ratios and steam concentrations on the UELs of ethane under such extreme environments.The results demonstrate that methane blending ratios(0-0.5)exhibit minimal influence on the UELs of CH4/C2H6 mixtures at 200℃and 0.4-0.6 MPa,and the UELs of CH4/C2H6 mixtures increase with increasing initial pressure,while exhibiting a progressively diminishing rate of UEL increment.Under identical thermal conditions(200℃,0.4-0.6 MPa),the UELs of C2H6/H2O mixtures decrease approximately linearly with increasing water vapor concentrations(0-40%).Conversely,higher initial pressures enhance the UELs of C2H6/H2O mixtures.Notably,under 0.5 MPa pressure,as temperature increases from 200℃to 270℃,the UELs of both pure ethane and C2H6/H2O mixtures containing 40%water vapor increase with a rise in temperature,with pure ethane demonstrating an accelerating UEL increase rate.关键词
高温/高压/CH4/C2H6混合气/C2H6/H2O混合气/爆炸上限Key words
elevated temperature/elevated pressure/CH4/C2H6 mixtures/C2H6/H2O mixtures/upper explosion limit分类
数理科学引用本文复制引用
吴传栋,曹栋,祁畅,闫兴清,喻健良..高温高压下CH4/C2H6及C2H6/H2O在纯氧中的爆炸上限[J].爆炸与冲击,2025,45(8):1-8,8.基金项目
国家自然科学基金(52174167,52374184) （52174167,52374184）
