Babushok V I, Linteris G T, Katta V R, Takahashi F
National Institute of Standards and Technology, Gaithersburg, MD.
Innovative Scientific Solutions, Inc., Dayton, OH.
Combust Flame. 2016;171. doi: 10.1016/j.combustflame.2016.06.019.
Phosphorus-containing compounds (PCCs) have been found to be significantly more effective than CFBr for reducing burning velocity when added to stoichiometric hydrocarbon-air flames. However, when added to lean flames, DMMP (dimethylmethylphosphonate) is predicted to increase the burning velocity. The addition of DMMP to lean mixtures apparently increases the equivalence ratio (fuel/oxidizer) and the combustion temperature, as a result of hydrocarbon content of DMMP molecule. Premixed flames studies with added DMMP, OP(OH), and CFBr are used to understand the different behavior with varying equivalence ratio and agent loading. Decrease of the equivalence ratio leads to the decrease of inhibition effectiveness of PCCs relative to bromine-containing compounds. For very lean mixtures CFBr becomes more effective inhibitor than PCCs. Calculations of laminar burning velocities for pure DMMP/air mixtures predict the maximum burning velocity of 10.5 cm/s at 4.04 % of DMMP in air and at an initial temperature of 400 K. Adiabatic combustion temperature is 2155 K at these conditions.
已发现，当添加到化学计量比的烃 - 空气火焰中时，含磷化合物（PCCs）在降低燃烧速度方面比CFBr显著更有效。然而，当添加到贫燃火焰中时，预计甲基膦酸二甲酯（DMMP）会提高燃烧速度。由于DMMP分子的烃含量，向贫燃混合物中添加DMMP显然会增加当量比（燃料/氧化剂）和燃烧温度。添加DMMP、OP(OH)和CFBr的预混火焰研究用于了解不同当量比和添加剂负载下的不同行为。当量比的降低导致PCCs相对于含溴化合物的抑制效果降低。对于非常贫的混合物，CFBr成为比PCCs更有效的抑制剂。纯DMMP/空气混合物的层流燃烧速度计算预测，在空气中DMMP含量为4.04%且初始温度为400K时，最大燃烧速度为10.5 cm/s。在这些条件下，绝热燃烧温度为2155K。
