MIXING APPARATUS OF A FLUID FOR A CATALYTIC BED

The present invention relates to a device for mixing and distributing fluids for a downflow catalytic reactor, the device comprising: a collecting zone (A) comprising a collecting means (5); a substantially vertical collecting pipe and at least one injection means (8) opening into the collecting pipe; a mixing zone (B) comprising a fluid mixing chamber (15) of length L1, wherein the mixing chamber (15) comprises a first end in communication with the collecting pipe and a second end in communication with a fluid exchange chamber (16) of length L2, disposed beneath the mixing chamber (15), and the length L2 of the exchange chamber (16) is strictly greater than the length L1 of the mixing chamber (15); and a distribution zone (C) disposed beneath the mixing zone (B), wherein the distribution zone (C) comprises a distribution plate (12) which carries a plurality of chimneys (13) and a plurality of horizontal panels (33) disposed above or on the chimneys (13).