Patent ID: 7238329
Filing Date: 2007-07-03
Classification: B01D,B01F,B01J,C10G

Abstract:
1. A device for injecting a secondary fluid located between two successive upper and lower granular beds to produce and distribute a polyphase mixture between said secondary fluid and a fluid or mixture of fluids originating from the upper granular bed, said device comprising an injection chamber for injecting a secondary fluid, contact apparatus for said secondary fluid and at least a portion of fluid or mixture of fluids originating from the upper granular bed, and distribution apparatus for simultaneous distribution of a mixture resulting from said contact to the lower granular bed, in which said contact and distribution apparatuses are conduits ( 204 ) with a substantially constant diameter along their axial length traversing said injection chamber and pierced with orifices ( 208 ) over their lateral wall, said device further comprising conduits ( 206 ) for the passage of a gaseous fraction of fluid or a fluid mixture originating from the upper granular bed, said conduits ( 206 ) traversing the chamber in a fluid tight manner and covered with a circular plate ( 207 ) preventing flow of a liquid fraction of the fluid or fluid mixture originating from the upper granular bed through said conduits, the height of conduits ( 206 ) being greater than the maximum height reached by liquid forming above plate ( 200 ) on the upper portion of the chamber.