A method for determining the optimum conditions for simulation of a stabilization system separation simulated moving bed.

摘要

Process control system separation simulated moving bed comprising a set of beds containing adsorbent solid material, distributed into several zones (Z1 to Z4) defined by points of injection of a load (F) and an eluent (The ) and transfer points from an extract (Ex.) and a raffinate (Raf.), means for injecting fluid extraction means fluid media swap the injection and extraction points, and measuring means operating variables, I allow to determine flow rates of injected fluids and flow rates of fluids drawn off optimal for obtaining a degree of purity (P) and extraction yield (R) set for at least one constituent in the extract (Ex), characterized because a performance simulation said separation system is performed until a stabilized regimen including dynamic optimization comprises a succession of stages of rectification of aintervalos fluid flow time of limited duration, each comprising: - a comparison of the purities (P) and the respective rendimientos®, obtained at the start of simulation steps (Si (t + deltaT)) where applicable modifications to at least one fluid flow, with those obtained in a reference situation (S0 (t + deltaT)) at the start of a simulation step without correction of flow rate from an initial situation Si (t), in the same interval time (DeltaT); - a selection from the indicated comparisons, of corrections to fluid flow applied to the indicated separation system to minimize the quantity of impurities converging towards the point of transfer of the extract, while purities set has not been reached; and - a selection from the indicated comparisons, of corrections to fluid flow applied to the indicated separation system to minimize the amount of said convergent constituent toward the point of transfer of the raffinate (Raf), while the yield fixed not it has been reached; - an initial current situation Si (t) based on the rectifications selected flow is calculated.