Simulated moving bed process with constant recirculation flow.

摘要

Process for separating at least two constituents from a load on a simulated conveyor belt in the presence of at least one solvent in a device of m chromatic columns defining between four and z zones comprising a recycling pump for the mixture of solvent and constituents located between chromatograms n and 1. The n columns contains z.n inlets and outlets so that during a cycle, each of the z inlet and outlet circuits is connected successively to each of the n inlets and outlets. A constant flow Q is pumped through the circuit, where Q is greater than the largest input in the device. The inlet and outlet circuits are changed throughout the cycle by independent means so the volume leaving each zone is constant.