MULTIPLE-BED DOWNFLOW REACTOR COMPRISING A MIXING DEVICE, USE OF SAID REACTOR, AS WELL AS MIXING METHOD

摘要

The present invention relates to a multiple-bed downflow reactor comprising vertically spaced beds of solid contact material and a mixing device positioned in an inter bed space between adjacent beds. The mixing device comprises a loop of first nozzles distributed around a vertical axis and arranged for ejecting a fluid in a first ejection direction into said inter bed space, on the one hand, and a loop of second nozzles distributed around the vertical axis and arranged for ejecting a fluid in a second ejection direction into said inter bed space, on the other hand. The first ejection direction is directed inwardly with respect to the loop of first nozzles. The second ejection direction is directed outwardly with respect to the loop of second nozzles.

主权项

1. A multiple-bed downflow reactor comprising vertically spaced beds of solid contact material and a mixing device positioned in an inter bed space between adjacent beds, wherein the mixing device comprises:
a loop of first nozzles distributed around a vertical axis and arranged for ejecting a fluid in a first ejection direction into said inter bed space; a loop of second nozzles distributed around the vertical axis and arranged for ejecting a fluid in a second ejection direction into said inter bed space; wherein, for each first nozzle, the first ejection direction is represented in a local orthogonal set of three first ejection vectors comprised of a first radial ejection vector extending perpendicular to the vertical axis, a first axial ejection vector extending parallel to the vertical axis and a first tangential ejection vector extending tangentially with respect to the vertical axis; wherein, for each second nozzle, the second ejection direction is represented in a local orthogonal set of three second ejection vectors comprised of a second radial ejection vector extending perpendicular to the vertical axis, a second axial ejection vector extending parallel to the vertical axis and a second tangential ejection vector extending tangentially with respect to the vertical axis; wherein the first radial ejection vectors are directed to the vertical axis whilst the second radial ejection vectors are directed away from the vertical axis; and wherein the first tangential ejection vectors define a first circumferential direction around the vertical axis, and wherein the second tangential ejection vectors define a second circumferential direction around the vertical axis, characterized, in that the first and second circumferential direction are opposite to each other.