DISPOSITIF DE DISTRIBUTION D'UN MELANGE POLYPHASIQUE SUR UN LIT DE SOLIDE GRANULAIRE COMPORTANT UN ELEMENT BRISE JET POREUX A REBORDS

摘要

The invention relates to a device for distributing a polyphase mixture in a downflow manner on at least one granular solid bed. The inventive device comprises (A) at least one plate (P) which is disposed above one of the granular solid beds. Moreover, the device comprises (B) numerous mixing channels (21) which are used to produce the polyphase mixture. Each of said channels comprises at least one upper flow section (22) which is used for the passage of most of the gaseous phase and at least one lower flow section (23) which is used to communicate the mixture formed inside said mixing channels with a bed of granular solids. The aforementioned channels are provided, along at least part of the height thereof, with one or more lateral sections (26) which enable the passage of the liquid phase inside the mixing channels and, optionally, a minor part of the gaseous phase. Said device also comprises (C) an assembly of anti-splash nozzle-type distribution systems (28) which can each be associated with each mixing tube or shared by several or all of the mixing tubes. Each distribution system has a controlled porosity and at least one part of the perimeter thereof is provided with flanges (100) which can also be porous (101).