The technique state to design counter-current extraction columns is based on the performance of pilot plant experiments. The modelling is then either with the equilibrium or dispersion model, whereas in the latter the...The technique state to design counter-current extraction columns is based on the performance of pilot plant experiments. The modelling is then either with the equilibrium or dispersion model, whereas in the latter the dispersion coefficient accounts for all hydrodynamic non-idealities. A new approach uses single droplet experiments to obtain the basic laws and functions governing droplet breakage, coalescence, relative velocity, and axial dispersion when using droplet populance balance models （DPBM）. The hydrodynamics simulation results show that the mean Sauter diameter, hold-up, and concentration profiles could be well predicted, which promotes the use of DPBM models for further applications in industrial scale.展开更多
A new column design software,TCD,was developed using visual basic for windows.The TCD interfaces are very friendly to facilitate communication between the user and the computer.TCD can be used not only to design new c...A new column design software,TCD,was developed using visual basic for windows.The TCD interfaces are very friendly to facilitate communication between the user and the computer.TCD can be used not only to design new columns,but also to check old columns for retray application.TCD can be easily learned and mastered.Several design examples are using TCD to display the advantages of TCD.This paper introduces the interface design process,functions and advantages of TCD.展开更多
基金Supported by the AiF (Arbeitsgemeinschaft Industrieller Forschungsvereinigungen, "Otto von Guericke" e.V.), the BMWA (Bundesministerium für Wirtschaft und Arbeit) and the DFG (Deutsche Forschungsgemeinschaft)
文摘The technique state to design counter-current extraction columns is based on the performance of pilot plant experiments. The modelling is then either with the equilibrium or dispersion model, whereas in the latter the dispersion coefficient accounts for all hydrodynamic non-idealities. A new approach uses single droplet experiments to obtain the basic laws and functions governing droplet breakage, coalescence, relative velocity, and axial dispersion when using droplet populance balance models （DPBM）. The hydrodynamics simulation results show that the mean Sauter diameter, hold-up, and concentration profiles could be well predicted, which promotes the use of DPBM models for further applications in industrial scale.
文摘A new column design software,TCD,was developed using visual basic for windows.The TCD interfaces are very friendly to facilitate communication between the user and the computer.TCD can be used not only to design new columns,but also to check old columns for retray application.TCD can be easily learned and mastered.Several design examples are using TCD to display the advantages of TCD.This paper introduces the interface design process,functions and advantages of TCD.
