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基于Senkin模型,应用自编化学反应机理简化程序,结合Kinalc和Mechmod开源程序,发展了详细化学反应机理的简化与验证方法.以电站锅炉燃烧的计算流体力学(CFD)数值模拟为应用背景,建立了考虑C/H/O/N/S/Cl/K/Na元素的详细化学反应机理(115组分,1,342基元反应),并运用此方法得到简化反应机理(28组分,20反应).验证结果表明,该简化机理在锅炉运行的主要参数变化范围内(温度T=1,100～1,500,℃,过量空气系数λ=0.8～1.2)具有较好的准确性和较高的计算效率,可应用于锅炉燃烧的CFD计算.
Based on the Senkin model, a simplified and validated method of detailed chemical reaction mechanism was developed by using a self-made chemical reaction mechanism to simplify the program, combined with the Kinalc and Mechmod open-source programs. Taking CFD numerical simulation of power station boiler combustion as the application background, The detailed chemical reaction mechanism (115 components, 1,342 basic reactions) considering the C / H / O / N / S / Cl / K / Na element was employed and a simplified reaction mechanism (28 components, 20 reactions) The verification results show that the simplified mechanism has better accuracy and higher computational efficiency in the range of main parameters of boiler operation (temperature T = 1,100 ~ 1,500 ℃, excess air coefficient λ = 0.8 ~ 1.2) CFD calculation applied to boiler combustion.