含硫天然气与氨气的层流火焰速度测量与反应动力学研究

Experimental and kinetic modeling study of laminar burning velocities of sour natural gas and ammonia

采用热流量法,在常温常压下对不同掺混比例的CH_(4),/H_(2)S、NH_(3)/CH_(4)/H_(2)S的绝热层流火焰速度进行了测量,并通过Chemkin软件对实验气体的层流火焰速度进行了模拟计算。采用Mulvihill+Han组合机理,在当量比为0.7~1.5的范围内都给出了较为吻合实验数据的结果。实验结果显示,提高H_(2)S的比例,CH_(4)/H_(2)S和NH_(3)/CH_(4)/H_(2)S的绝热层流火焰速度值都有所下降;并且在不同工况下,层流火焰速度峰值始终在当量比φ=1.05处。

In this paper,the heat flow method is used to measure the adiabatic laminar burning velocities of CH_(4)/H_(2)S and NH_(3)/CH_(4)/H_(2)S with different blending ratios under normal temperature and pressure,and the laminar burning velocity of experimental gas is simulated by Chemkin software.Under the Mulvihill+Han combination mechanism,the results are quite consistent with the experimental data in the equivalence ratio range of 0.7 to 1.5.The experiment results show that increasing the ratio of H2S,the adiabatic laminar flame velocities of CH_(4)/H_(2)S and NH_(3)/CH_(4)/H_(2)S both decrease;and under different working conditions,the laminar flame velocities always peak when the equivalent ratio is 1.05.