过氧化物在线制备装置的气液两相流模拟

Gas-Liquid Two-Phase Flow Simulation of Peroxide Online Preparation Device

利用过氧化物进行烟气脱硫是降低冶金尾气中SO2含量的有效手段,对一种实验室小型过氧化物在线制备装置内的气液两相流动过程进行三维数值解析,发现底部吹入的气体和液体催动形成稳定的环形流动是保证过氧化物合成效率和设备有效运行的基础。对极板间距和喷吹速率两个关键参数进行优化,以制备装置内流体平均运动速度、平均湍动能、喷吹流体利用率及极板剪应力等多项因素为判据,得出最佳极板间距为30 mm,最佳喷吹速率为0.94 m/s。

Using peroxide for flue gas desulfurization is an effective way to reduce the content of SO2 in metallurgical tail gas.Three-dimensional numerical simulation of gas-liquid two-phase flow in a laboratorylevel small-scale peroxide online preparation device was carried out.It is found that the gas and liquid blown from the bottom impels the formation of stable annular flow,which is the basis for ensuring the efficiency of peroxide generation and the effective operation of the device.The two key parameters of the plate spacing and the injection rate were optimized.The optimum plate spacing is 30 mm and the optimum injection rate is 0.94 m/s based on several factors such as average flow velocity,mean turbulent kinetic energy,injection fluid utilization rate and plate shear stress.