氢气对典型烃类气体MESG值影响试验研究  

Experimental study on the influence of hydrogen on the MESG of typical hydrocarbon gases

作　　者：王鹏 Wang Peng(State Key Laboratory of Chemical Safety,Qingdao Shandong 266104,China;SINOPEC Research Institute of Safety Engineering Co.,Ltd.,Qingdao Shandong 266104,China)

机构地区：[1]化学品安全全国重点实验室,山东青岛266104 [2]中石化安全工程研究院有限公司,山东青岛266104

出　　处：《消防科学与技术》2025年第4期471-475,484,共6页Fire Science and Technology

基　　金：中国石化科技部项目(323132)。

摘　　要：针对含氢气体混合物爆炸分级存在争议、阻火器选型保守的问题,试验研究了氢气对甲烷、丙烷、乙烯等典型烃类气体MESG值的影响规律。结果表明:随着混合物中氢气含量的增加,MESG逐渐降低。不同烃类MESG随氢气含量增加而减小的速率不同,添加氢气对甲烷、丙烷、乙烯MESG的影响逐渐减弱。提出阻火器选型建议:对于含氢甲烷气体,氢气含量低于30%时,可选择IIA等级阻火器;氢气含量30%~60%时,可以选择IIB3等级阻火器;氢气含量大于60%时,应选择IIC等级阻火器。对于含氢丙烷气体,氢气含量低于60%时,可选IIB3等级阻火器;氢气含量达到60%及以上时,应选IIC等级阻火器。对于乙烯含氢气体,建议采用IIC等级阻火器。建立典型烃类含氢气体MESG预测公式,与试验结果吻合良好,计算结果优于现有计算方法 ,可用于指导含氢烃类气体爆炸等级划分、阻火器及防爆设备选型。In response to the controversy over the explosion group classification of hydrogen containing gas mixtures and the conservative selection of flame arresters,the influence of hydrogen on the MESG of typical hydrocarbon gases such as methane,propane,and ethylene was experimentally studied.The results indicate that as the hydrogen content in the mixture increases,MESG gradually decreases.The rate of decrease of MESG with increasing hydrogen content varies among different hydrocarbons,and the effect of adding hydrogen on MESG of methane,propane,and ethylene gradually weakens.Suggestions for selecting flame arresters:For hydrogen-methane gas with a hydrogen content below 30%,IIA grade flame arresters can be selected;When the hydrogen content is equal to or greater than 30%but less than 60%,IIB3 level flame arresters can be selected;When the hydrogen content is greater than 60%,an IIC level flame arrester should be selected.For hydrogen-propane gas,when the hydrogen content is less than 60%,an IIB3 level flame arrester can be selected.When the hydrogen content reaches 60%or more,an IIC level flame arrester should be selected.For ethylene-hydrogen gas,it is recommended to use IIC grade flame arresters.A MESG prediction formula for hydrogen containing hydrocarbon gases was established,which is in good agreement with experimental results and outperforms existing calculation methods.It could be used to guide the classification of explosion levels for hydrogen containing hydrocar‐bon gases,as well as the selection of flame arresters and explosion-proof equipment.

关 键 词：含氢气体 最大试验安全间隙 阻火器选型 爆炸等级划分 

分 类 号：X932[环境科学与工程—安全科学] TQ086[化学工程]