Application and research progress of functional packings in high-gravity rotating packed bed
As the core component of the rotating packed bed,the packing is an important place where the microscopic mixing and mass transfer reaction processes of materials occur.The structure,material composition and filling mode of the packings determine the function of the packings,which directly affect the mass transfer performance,service life and application range of the rotating packed bed,so it is particularly important to enhance the function of the packings.By changing the surface properties,adjusting the shape and designing the structure of the commonly used packings,the functional packings are imbued with functional properties such as adsorption,catalysis and hydrophobic,which shows excellent results in improving the performance and operation effect of the rotating packed bed.In this paper,the main classification and characteristics of functional packings in rotating packed beds were reviewed,the application of functional random and structured packings in rotating packed beds in recent years was summarized,the aspects of enhancing mass transfer characteristics and improving liquid flow behavior were analyzed for explaining the functional characteristics of packings,and the development direction and industrialization prospect of functional packings were prospected.