Patent ID: 7651076

Claim:
A device for distributing a poly-phase mixture constituted by at least one gas phase and at least one liquid phase, said mixture being in downflow mode though at least one bed of granular solid, said device comprising: at least one tray (P) located above one of said beds of granular solid; a plurality of mixer conduits ( 21 ) for said polyphase mixture of liquid and gas phases, each of said conduits comprising at least one upper cross section for flow ( 22 ) allowing the passage of the majority of the gas phase, and at least one lower cross section for flow ( 23 ) allowing the mixture formed inside said mixer conduits to communicate with a bed of granular solid, said mixer conduits ( 21 ) being provided with one or more lateral cross sections for flow ( 26 ) over at least a portion of their height to allow the passage of the liquid phase and optionally a minor portion of the gas phase inside the mixer conduits, said mixer conduits ( 21 ) further being provided with one or more liquid phase drainage orifices at the level of the tray (P), where the cross section of the orifices is such that the fraction of the liquid phase flow passing through the orifices is less than 10% of the total flow of the liquid phase in the conduit; a jet breaker dispersive system ( 28 ), having a controlled porosity in the range of 10% to 40%, disposed below the lower cross section for flow ( 23 ) and above the bed of granular solids, said jet breaker dispersive system being characterized in that at least a portion of the perimeter of the dispersive system is provided with rims ( 100 ) or ( 101 ), said rims having a height in the range of 2 to 50 mm.