Patent ID: 8641906

Claim:
A device comprising: a multi-stage column having a succession of distributor plates, each plate supporting a bed of granular solid, each plate having a base plane defined by the top of the plate supporting the bed of granular solid and having mixing chambers ( 8 ) disposed immediately below said base plane and each plate being provided with a network for distributing fluids, said network comprising substantially horizontal lines above the base plane of the plate, said lines having a diameter for carrying said fluids ( 6 , 7 , 10 ), and said lines having a plurality of degrees of branching lines in fluid communication with the mixing chambers in the distributor plates, the number of branching lines being from 1 to rank N, the lines from rank P to rank N, P being a selected rank from 1 to N, being adherent to the base plane of the plate under consideration, adherent meaning that, with H denoting a distance separating a lower end of the horizontal line of the network from the base plane of the distributor plate with which the branching line is in fluid communication, H is in the range 0 to a quarter of the diameter of the line under consideration.