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US 11,168,264 B2Granted
Three dimensional structured packing for improving the contact between a gas phase and a dispersed solid phase following in counter-current
AssigneeIfp Energies Nouvelles
InventorsRim Brahem, Benjamin Amblard, Ann Cloupet, Thierry Gauthier, Ludovic Raynal
Life of this patent
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Abstract
The present invention describes a packing with a three-dimensional structure which is particularly suited to creating homogenous and anisotropic mixing between the gas phase and a dispersed solid phase moving in counter-current flow. Application of this packing to the stripper of fluidized catalytic cracking units.
Claims20
A three-dimensional structured packing for homogeneous contact between a gas phase and an emulsion phase flowing in counter-current, said packing comprising:
- a plurality of three-dimensional structures, each three-dimensional structure having an elementary pattern produced by 3 secant planes, said elementary pattern being a complex volume comprising 3 vanes, each vane respectively belonging to one of the 3 secant planes and the 3 secant planes, when considered in pairs of the planes, always have an intersection, and
- wherein the plurality of elementary patterns are distributed in a plurality of parallel distribution planes with each distribution plane being distinct from the 3 secant planes of the three-dimensional structures therein with a triangular pitch spacing, these distribution planes each being referred to as a distribution layer and the plurality of parallel distribution planes being referred to as a plurality of parallel distribution layers, and
- wherein the plurality of parallel distribution layers are stacked in the form of a vertical stack, each distribution layer having the same density of elementary patterns, and
- wherein in said packing said elementary patterns are inscribed inside a triangular-pitch mesh, the pitch spacing being from 1 to 1.5 times the minimum distance (d) defined by d=(a+a*cos(60°)+b/2 sin(90°- α)),
- wherein
- angle (α) is the angle that the vanes of the pattern make with the horizontal, and which is between 45° and 75°,
- (a) is the width of the vanes and is between 3 cm and 30 cm, and
- (b) is the distance separating two successive distribution layers and is between 3 cm and 50 cm, and
- successive distribution layers being such that, from one layer to the next, the triangle formed by the 3 most closely-spaced elementary patterns belonging to the layer (N) is offset in layer (N+1) so that the vertex of a triangle of the layer (N+1) lies at center of a circle inscribed inside the triangle of the layer (N).
6 more elements
A three-dimensional structured packing for homogeneous contact between a gas phase and an emulsion phase flowing in counter-current, said packing comprising:
- a plurality of three-dimensional structures, each three-dimensional structure having an elementary pattern produced by 3 non-parallel planes, said elementary pattern being a complex volume comprising 3 vanes, each vane respectively belonging to one of said 3 non-parallel planes, and the 3 non-parallel planes, when considered in pairs of the planes, always have an intersection, and
- wherein the plurality of elementary patterns are distributed in a plurality of parallel distribution planes with each distribution plane being distinct from the 3 non-parallel planes of the three-dimensional structures therein with a triangular pitch spacing, these distribution planes each being referred to as a distribution layer and the plurality of parallel distribution planes being referred to as a plurality of parallel distribution layers, and
- wherein the plurality of parallel distribution layers are stacked in the form of a vertical stack, each distribution layer having the same density of elementary patterns, and
- wherein in said packing said elementary patterns are inscribed inside a triangular-pitch mesh, the pitch spacing being from 1 to 1.5 times the minimum distance (d) defined by d=(a+a*cos(60°+b/2 sin(90°- α)),
- wherein
- angle (α) is the angle that the vanes of the pattern make with the horizontal, and which is between 45° and 75°,
- (a) is the width of the vanes and is between 3 cm and 30 cm, and
- (b) is the distance separating two successive distribution layers and is between 3 cm and 50 cm, and
- successive distribution layers being such that, from one layer to the next, the triangle formed by the 3 most closely-spaced elementary patterns belonging to the layer (N) is offset in layer (N+1) so that the vertex of a triangle of the layer (N+1) lies at the center of a circle inscribed inside the triangle of the layer (N).
6 more elements
Dependencies are inferred from the claim text.