METHOD AND DEVICE FOR CHROMATOGRAPHICALLY FRACTIONATING A MIXTURE IN A SIMULATED MOBILE BED IN THE PRESENCE OF A COMPRESSED GAS, A SUPERCRITICAL FLUID OR A SUBCRITICAL LIQUID

摘要

we describe a device and a method for fractionating mixtures of components by chromatography or by adsorption in a simulated moving bed with three, four or five areas. it is by a compressor or a pump to a compressed gas such as eluent (ie, ir), in which the pressure is lower than the critical pressure of the gas.at any point in at least one zone and one way at any point in at least two areas from the point of injection of the eluent (ir), the gas has a compressibility coefficient is significantly different from 1. you can also inject eluent supercritical fluid or liquid sub-critical. the pressure of each zone can be modulated.application to the separation of petroleum fractions.