Single-phase fluid distributor-mixer-extractor for beds of granular solids

Column having at least a first bed (1) and at least a second bed (2) of granular solids separated from each other by at least one distributor-mixer-extractor, each distributor-mixer-extractor comprising in combination:

• at least one injection and/or removal channel (3) of a secondary fluid or second fluid, said channel (3) being connected to at least one injection or removal chamber or first chamber (13), said first chamber having at least one passage opening (9) in at least one of its walls,
• one or more means (7) for collecting a principal fluid,
• at least one mixing chamber (12) or second chamber located in the vicinity of said first chamber (13) and communicating with the latter by at least one passage opening (9), said second chamber (12) having one or more orifices (10) allowing passage of said second fluid coming from said collecting means (7) or to said collecting means and at least one passage (11) for a fluid coming from the mixing chamber,
• at least one or more means (8) of redistributing said fluid coming from said mixing chamber to the second bed of granular solids,
• a baffle (4) located;
• relative to the collecting means (7) and to the mixing chamber (12) to create a collecting space (Ec) communicating with said opening (10),
• relative to said distributing means (8) and to said mixing chamber (12) to create a space (Ed) for redistributing said fluid coming from the mixing chamber, said redistributing space (Ed) communicating with said passage (11),
• and said baffle being located such as to separate said collecting and redistributing spaces,
• characterized in that at least one of the fluid passages (11) has at least one calibrated orifice having a geometry designed to create a sufficient pressure drop to confine fluid turbulence inside said mixing chamber, wherein the first grid (7) is substantially in contact with the first bed and the second grid (8) is substantially in contact with the second bed.