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首页> 外文期刊>Combustion Science and Technology >FLAME INHIBITION ACTIVITY OF DMMP IN OPPOSED CH_4/N_2-AIR DIFFUSION FLAMES
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FLAME INHIBITION ACTIVITY OF DMMP IN OPPOSED CH_4/N_2-AIR DIFFUSION FLAMES

机译：相对的CH_4 / N_2-空气扩散火焰中DMMP的火焰抑制活性

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摘要

Some phosphorus-containing compounds (PCCs), such as dimethyl methyl phosphonate (DMMP) and trimethyl phosphate, have previously been considered as potential flame inhibitors. To investigate the flame inhibition behavior of PCCs, we employ the laser-induced fluorescence (LIF) technique to quantitatively measure hydroxyl (OH) concentrations in CH_4/N_2-air opposed diffusion flames, undoped and doped with 0.01 % or 0.1 % DMMP in either the oxidizer or fuel stream, respectively. The methane content in the fuel stream ranges from 25% to 40% by volume, and the global strain rate (SR) is set at 20 s~(-1). The percent reduction in total integrated OH number density in DMMP-doped flames decreases with increasing methane content, as a result of higher flame temperatures. Experimental OH profiles for DMMP-doped flames are compared with predicted profiles from kinetic modeling. The predicted reduction in total integrated OH severely underpredicts the measured reduction, thus suggesting a need for further improvemenls in our understanding of the chemical kinetics controlling PCC inhibition.
机译：某些含磷化合物（PCC），例如膦酸二甲酯甲酯（DMMP）和磷酸三甲酯，曾被视为潜在的阻燃剂。为了研究PCC的火焰抑制行为，我们采用激光诱导荧光（LIF）技术定量测量CH_4 / N_2-空气对置扩散火焰中未掺杂和掺杂有0.01％或0.1％DMMP的羟基（OH）浓度。氧化剂或燃料流。燃料流中的甲烷含量为25％至40％（体积），总应变率（SR）设置为20 s〜（-1）。由于较高的火焰温度，DMMP掺杂的火焰中总的OH总数密度降低的百分比随甲烷含量的增加而降低。将掺杂DMMP的火焰的实验OH分布与动力学模型预测的分布进行比较。预测的总OH减少量严重低估了所测得的减少量，因此表明在我们进一步了解控制PCC抑制的化学动力学方面需要进一步改进。

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