非平衡等离子体对脉动丙烷预混火焰的影响

Premixed Propane Flames Under Flow Pulsations Using Non-equilibrium Plasma

通过将介质阻挡放电应用于燃烧增强,实验研究了非平衡等离子体对于入流脉动条件下丙烷预混火焰的影响。通过本生灯法测定火焰速度,通过气相色谱分析确定丙烷燃料经非平衡等离子体作用后的组分并计算物性,重点研究了不同限流速度、脉动幅度以及平均流速下等离子体对吹熄极限的影响。实验结果表明,非平衡等离子体使丙烷预先裂解,提高火焰速度,并在一定区间内优化吹熄特性,增强燃烧稳定性。

By applying die Le ctric barrier discharge(DBD) plasma to combustion enhancement,the effect of non-equilibrium plasma on premixed propane flame under flow pulsations was investigated experimentally.The flame speed was measured by a bunsen burner,and the plasma pyrolysis of propane was analyzed by gas chromatography.The influence of rate of change,pulsation amplitude and average flow rate on the Le an blowout limit were investigated.The experimental results show that the non-equilibrium plasma reforms propane,increases the flame speed,extends the Le an blowout limit and enhances the combustion stability to some extent.