SIMULATED COUNTERCURRENT CHROMATOGRAPHIC SEPARATION PROCESS AND DEVICE WITH LOW PRESSURE DROP AND HIGH NUMBER OF ZONES

摘要

Simulated moving-bed separation process characterized in that the feed and desorbent injection streams are each divided into N streams (N being an integer strictly greater than 1) injected respectively at N feed injection points and at N separate desorbent injection points, and in that the extract and raffinate draw-off streams are also each divided into N streams each drawn off at N separate draw-off points, the device consisting of 4 × N chromatographic zones.