Institut Francais Du Pe'trole

Robert Agoero

Isabelle Harter

Thierry Gauthier

A device for distributing a poly-phase mixture having a gas phase and liquid phase which mixture is in downflow mode through at least one bed of granular solid. The device has at least one tray (P) located above one of the beds of granular solid. It further has mixer conduits () for the liquid and gas phases, each conduit having an upper cross section for flow () allowing the passage of the majority of the gas phase, and a lower cross section for flow () allowing the mixture formed inside the conduits to communicate with a bed of granular solid. The mixer conduits () also having one or more lateral cross sections for flow () over at least a portion of their height to allow the passage of the liquid phase and possibly a minor portion of the gas phase inside the mixer conduits. The device also has a jet breaker type dispersive system () having a controlled porosity disposed below the lower cross section for flow () and above the bed of granular solids. The distribution device being such that at least a portion of the perimeter of the dispersive system is provided with rims () or ().

Device for distributing a poly-phase mixture on a granular solid bed comprising a porous anti-splash nozzle element with flanges

A sub-assembly is described that ensures contact, material distribution and heat and/or material exchange of at least one gas phase, at least a portion of which is hydrogen, and at least one liquid phase, for a vessel containing at least one bed of granular solid, said phases being in overall downflow mode and traversing said bed of granular solid, said sub-assembly comprising at least one distributor tray (P) located above the bed of granular solid, comprising a plurality of downcomers () each surmounted by at least one jet disturber device and each having in its upper portion at least one cross section of flow () for entry of the major portion of said gas phase into said downcomer and, between said upper portion and the lower portion of said downcomer above tray (P), at least one cross section of flow () for entry of the major portion of said liquid phase into said downcomer, and in its lower portion at least one cross section of flow () of the mixture formed in the downcomer for distributing it over the bed of granular solid located below said lower portion, each downcomer containing at least one packing extending across the whole of the transverse cross section of the downcomer between its upper portion and its lower portion in the circulation zone, constituted by cells through which said liquid and said gas phase pass, said cells orientating the circulation of fluids inside said downcomer in a substantially radial direction.

Polyfunctional sub-assembly for contact, material distribution and heat and/or material exchange of at least one gas phase and at least one liquid phase

A device for distributing a poly-phase mixture comprises: at least one gas phase and at least one liquid phase, said mixture being in downflow mode through at least one bed of granular solid, comprising: at least one tray (P) located above one of said beds of granular solid, a plurality of mixer conduits ( ) for said liquid and gas phases, each of said conduits comprising at least one upper cross section for flow ( ) and at least one lower cross section for flow ( ) allowing the mixture formed inside said mixer conduits to communicate with a bed of granular solid, said mixer conduits being provided over a portion of their height with one or more lateral cross sections for flow ( ), said upper cross section for flow ( ) allowing the majority of the gas phase to pass and said lateral cross section for flow ( ) allowing the passage of the liquid phase into said mixer conduits and/or at least a portion of the gas phase respectively, said device comprising at least one jet disturber type dispersive system ( ) with a controlled porosity below the lower cross section for flow ( ) and above the bed of solid.

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Vienne, France

Robert Agoero