PROCESS FOR DETERMINING BY SIMULATION THE OPTIMUM STABILIZATION CONDITIONS OF A SIMULATED MOVING BED SEPARATION SYSTEM

摘要

A separation process is simulated using a movable bed containing a mixture of adsorbent solids. The bed has zones delimited by points for injecting charges of fluid to be treated and an eluent and extraction points for an extract and a raffinate. The simulation has a series of rectification stages of given duration and determines the size of the charge and the liquid removed in order to optimize the purity and amount of each component of the extract. At the end of each stage the change in purity and amount of each component is determined. At the end of each stage rectification that do not achieve the desired degree of purity and the desired amount of extract are selected. Optimization aims for when the purity and amount of the extract both converge simultaneously to fixed values. The amount of fluid recycled or the amount of extract are varied to optimize the process.