H_(2)/CO合成气的最小点火能研究  

Study on minimum ignition energy of H_(2)/CO syngas

作　　者：李畅[1] 苑艺笑 原琪 郝剑涛 何蔚 苑春苗[2] LI Chang;YUAN Yixiao;YUAN Qi;HAO Jiantao;HE Wei;YUAN Chunmiao(College of Civil Engineering,Shenyang Jianzhu University,Shenyang Liaoning 110168,China;College of Resources and Civil Engineering,Northeastern University,Shenyang Liaoning 110819,China;College of Mechanical and Electrical Engineering,Beijing Institute of Technology,Beijing 100081,China)

机构地区：[1]沈阳建筑大学土木工程学院,辽宁沈阳110168 [2]东北大学资源与土木工程学院,辽宁沈阳110819 [3]北京理工大学机电学院,北京100081

出　　处：《中国安全科学学报》2021年第4期88-94,共7页China Safety Science Journal

基　　金：国家自然科学基金资助(51974189);国家重点研发计划项目(2017YFC0804703);辽宁省自然科学基金资助(19-ZD-0668);辽宁省重点实验室科技计划项目(2019JH2/10300054)。

摘　　要：为探究工业合成气(主要成分为H_(2)和CO)的体积分数及惰化作用下其最小点火能变化特征,首先,选取CH_(4)气体样品利用最小点火能测试装置确定试验系统的敏感条件;然后基于系统敏感条件,测定不含惰性气体N_(2)系统中添加不同比例的H_(2)与CO混合物的最小点火能;最后,测定N_(2)稀释作用下气体混合物的最小点火能。研究结果表明:不含惰性气体的H_(2)与CO合成气中,H_(2)体积分数低于25%时其对合成气的敏感体积分数值影响较大;含惰性气体N_(2)的H_(2)与CO合成气中,燃料体积分数大于40%时,惰化作用效果显著;含惰性气体N_(2)气体的H_(2)与CO合成气中,燃料体积分数小于40%时,系统最小点火能值的贡献主要取决于H_(2)所占体积分数。In order to explore minimum ignition energy variation characteristics of industrial syngas(mainly composed of H_(2) and CO)under action of volume fraction and inerting effect.Firstly,methane gas was used to determine sensitive conditions of experimental system of minimum ignition energy.Then,minimum ignition energy of H_(2)/CO syngas with different ratios,as well as N_(2) dilution conditions was measured by using a calibrated experimental device under its sensitive conditions.Finally,minimum ignition energy of gas mixture under N_(2) dilution was determined.The result shows that in H_(2) and CO syngas without inert gas,when volume fraction of H_(2) is lower than 25%,it has a great influence on sensitive volume fraction value of system syngas.In H_(2) and CO syngas containing N2,inerting effect is significant when fuel volume fraction is greater than 40%.When fuel volume fraction of H_(2) and CO syngas containing inert gas N_(2) is less than 40%,contribution of system’s minimum ignition energy value mainly depends on volume fraction of H_(2).

关 键 词：H2/CO合成气 最小点火能 惰化作用 敏感体积分数 惰性气体 

分 类 号：X932[环境科学与工程—安全科学]