Patent ID: 9297792
Filing Date: 2016-03-29
CPC Classification: B01D,C07C,G01K,G01N

Claim Text:
1. A simulated moving bed xylenes separation system comprising: two adsorbers A and B connected in series, a first circulation line for the flow of a circulation stream originating from the bottom of adsorber A to the top of adsorber B, second circulation line for the flow of a circulation stream originating from the bottom of adsorber B to the top of adsorber A, each of said adsorbers having a feed inlet for introducing a feed stream, an extract outlet for removing an extract stream, and a raffinate outlet for removing a raffinate stream; a distillation column C for distilling raffinate; and a device for measuring concentration by analyzing a Raman spectrum relating to sampling points, said device having two independent analysis routes, called analysis route wherein for analysis route wherein for analysis route a shut-off valve ( a thermocouple ( an analysis cell ( a second shut-off valve (