Simulated Moving-Bed Chromatpgraphic Separation

초록

By use of conventional gas-liquid chromatography, partition coefficient were obtained in terms of column temperature. The feed materials were chosen by close-boiling point as dichloromethane, diethylether, and dimethoxymethane. In a preparative chromatographic column (I.D. 1cm), the three close-boiling components were separated with dinonylphtalate-coated chromosorb A as a SLP and helium as an eluant. Scaled-up chromatographic system was used to separate the two closed-boiling components, diethylether and dichloromethane. The system was composed of 12 seqmented columns and sixty solenoids valves controlled by a programmable controller. From the experimental results, the efficient separation method was that the less-absorbed component was obtained purely in partition section, the remained components were separated in desorption section by increase in column length, and the whole process should be finished within a designated time. This nes process was developed and used for separating the binary feed materials continuously by the gas-liquid chromatography. Uniqueness of the system was that several columns were added in series in the desorption section to separate the continuous chromatographic systems. The theoretical concentration profiles assumed by uniform film thickness and linear partition equilibium were in good agreements with the experimental data for the combined continuous and preparative chromatographic system.