含CO2天然气的可燃极限与燃爆压力

基金项目:

国家科技重大专项项目(2008ZX05054)

国家重点基础研究发展计划(973)项目(2006CB705800)

中国石油重大科技专项项目(07-02Z-01)

Flammablelimitsandcombustionpressureofnaturalgas containingcarbondioxide

1.
StateKeyLaboratoryofExplosionScienceandTechnology,
2.
BeijingInstituteofTechnology,Beijing 100081,China;
3.
SchoolofComputerandCommunicationEngineering,ZhengzhouUniversityofLightIndustry,

Funds:

NationalST MajorProject(2008ZX05054)

NationalBasicResearchProgramofChina(973Program)(2006CB705800)

摘要: 采用改进的Hartmann管作为测试主体测试了室温常压下含CO2天然气的可燃极限和燃爆压力, 得到了含CO2天然气在三角坐标系下的可燃性图表和燃爆压力的变化规律。研究表明:与纯天然气相比,含 CO2天然气可燃范围缩小,燃爆威力降低;当泄漏天然气与air的混合物中CO2的体积分数超过13.86%时, 混合气体将失去燃爆性;处于燃爆范围的CH4/air/CO23组分混合气体,燃爆压力随CO2与CH4体积分数比的增大而减小。
- 爆炸力学 /
- 可燃极限 /
- Hartman管 /
- 天然气 /
- 燃爆压力 /
- CO2
Abstract: A modifiedHartmanntubewasusedastheprincipalpartoftheexperimentalsetuptotest theflammablelimitsandcombustionpressureofnaturalgascontainingcarbondioxideatroomtemperatureandatmosphericpressure. Thetriangularflammabilitydiagramandthecombustionpressure distributionwereexperimentallyobtainedfornaturalgascontainingcarbondioxide.Investigatedresultsdisplaythatnaturalgascontainingcarbondioxidehasanarrowerflammabilityregionandlower explosionviolencethanpurenaturalgasdoes.Whenthevolumefractionofcarbondioxideexceeds 13.86%inthemixturegasformedbyleakednaturegasandair,themixturegascanloseflammability. Forthemethane-air-carbondioxidemixturegasintheflammabilityregion,thecombustionpressuredecreaseswiththevolumeratioincreaseofcarbondioxidetomethane.
- mechanicsofexplosion /
- flammablelimits /
- Hartmanntube /
- naturalgas /
- combustionpressure /
- carbondioxid