摘要
采用CFD软件对湿法烟气脱硫系统中广泛使用的折板式除雾器的主要性能进行了数值模拟.在模拟过程中,建立了数学模型,对气相采用基于雷诺时均方程的SST湍流模型封闭N-S方程,对液相采用基于Euler-Lagrange方法的DPM方法.通过调节除雾器的结构参数和工作参数,揭示了气固两相流动的流场,分析了结构参数和工作参数对除雾器分离效率和工作压力降的影响,得出相关性规律,可用于湿法烟气脱硫系统中折板式除雾器的设计和优化.
A CFD software was employed to simulate the performance of chevron mist eliminator in W-FGD. A mathematical mode was established for simulating the separation efficiency and press drop of the mist eliminator, the N-S equations are closed with SST equations and DPM, which is based on Euler-Lagrange method. By calculating the separation efficiency and press drop of various mist eliminators with different structural parameters and working parameters, their effects on efficiency and press drop have been analyzed. We obtained several general rules,which are applicable for designing and optimizing mist eliminator in W-FGD.
出处
《煤炭转化》
CAS
CSCD
北大核心
2007年第3期58-63,共6页
Coal Conversion
