The comprehensive inhibition mechanism of hydrocarbon/air premixed flames by monoammonium phosphate (NH4H2PO4) powder is studied in this research work using theoretical, experimental and numerical simulation approaches. The critical diameter of the NH4H2PO4 powder particles in the premixed CH4/air flame was calculated to be 30 mm using a predictive mathematical model. Using a Bunsen burner apparatus, the laminar burning velocity of the CH4/air/NH4H2PO4 mixtures, entrained with NH4H2PO4 powder (D90 PO2 and HOPO PO2) scavenged the H and OH radicals in the flame, resulting in disappearance
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机译：本研究采用理论、实验和数值模拟方法，研究了磷酸一铵（NH4H2PO4）粉对烃/空气预混火焰的综合抑制机理。使用预测数学模型计算出预混CH4/空气火焰中NH4H2PO4粉末颗粒的临界直径为30 mm。使用本生燃烧器装置，在气相当量范围为 0.9-1.5、粉末浓度范围为 0-33.8 g/m3 以及温度和压力条件分别为 298 K 和 1 bar 的条件下测量了夹带NH4H2PO4粉末 （D90 PO2和HOPO PO2）的催化循环清除了火焰中的H和OH自由基，导致消失
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