Patent ID: 8685259

Claim:
A process for simulated moving bed separation comprising: providing a device for distributing a fluid to at least one granular bed of a multistage column having a succession of plates, each plate (P) supporting a bed of granular solid and being divided into panels denoted (Pa), said device being applied to each panel (Pa) of a plate (P) equipped with a collecting baffle ( 5 ) located immediately upstream of the device, said device comprising the following three elements disposed from top to bottom in the direction of fluid flow: i) a solid jet breaker ( 9 ) located approximately in the axis of an outlet opening of the collecting baffle of the panel (Pa) and centered on the axis of said collecting baffle; ii) an intermediate perforated plate ( 8 ) extending laterally beyond the jet breaker over a width in the range from the width of said jet breaker to a higher value equal to half the width of the panel plus or minus 5 cm wherein said intermediate perforated plate does not extend over this entire section of the panel (Pa), and with a degree of opening in the range 15% to 30%; c) a distribution plate ( 7 ) extending over the entire section of the panel (P), and with a degree of opening in the range 7% to 15%; and separating a feed mixture of aromatic compounds containing 7 to 9 carbon atoms by passing said feed mixture through said multistage column.