旋流吸收器气液吸收传质过程研究

根据旋流吸收器中分散液相不同的运动形态建立了伴有化学反应的气液吸收传质模型,且该模型的表达形式与Danckwerts的表面更新理论一致。从模型上看,液侧传质系数kL正比于扩散系数DA和表面更新率S的平方根,这一正比关系还得到了实验结果的部分验证。根据实验结果可以看出,与其他吸收器相比,作为一种结构简单的静态设备,旋流吸收器同样可以提供一个强化传热、传质的流体力学环境。

Study on the process of gas-liquid absorption & mass transfer with chemical reaction in a cyclone

A mathematic model of gas-liquid absorption and mass transfer with chemical reaction in a cyclone was developed based on the characteristics of mass transfer and the dynamics of dispersed liquid phases in the swirling flow field.According to this model,the transfer coefficient on liquid side k_L is proportionally to the square root of diffusion coefficient D_A and the square root of the renewal rate S,which was consistent with the Danckwerts′ Surface Renewal Theory, and was proved by experiments approximately.Compared with other absorbers,the experimental results show that the cyclone,as simple and static equipment,can also supply a sound hydromechanical environment to intensify the process of mass transfer.All those work will give a theoretical fundamental for the further research on the application of the high absorption performance of the cyclone,such as desulphurization,air cleaning,etc.