Scalable inlet liquid distribution system for large scale chromatography columns
View Patent ↗A uniform fluid distribution system ( 2 ) for use with a liquid transfer system ( 100 ) for maintaining an interface between liquid phases within a large scale separator system including a cell of circular or rectilinear cross-section into which liquid may be introduced as discrete phases at an inlet zone occupying a first approximately transverse cross-sectional region of said cell and output at an outlet zone occupying a second approximately transverse cross-sectional region of said cell. Said distribution system ( 2 ) comprises at least one liquid inlet ( 24 ) and one distribution outlet ( 32 ), which are connected by an internal flow connection system ( 36 ). Wherein said distribution outlet ( 32 ) is an annular or rectilinear distribution-slot ( 32 ) with a radius or distance r to the midpoint between an inner slot-radius or distance from the cell center and an outer slot-radius or distance from the cell center, said radii or distances from the cell center defining a slot-width w, through which annular or rectilinear distribution-slot ( 32 ) liquid entering said inlet is distributed to said cell along an approximately horizontal plane, and said internal flow connection system ( 36 ) is formed such that it provides an essentially uniform fluid flow through the distribution-slot ( 32 ).
1. A uniform fluid distribution system ( 2 ) for use with a chromatography column including a cell of circular cross-section or rectilinear cross-section into which liquid may be introduced as discrete phases at an inlet zone occupying a first approximately transverse cross-sectional region of said cell and output at an outlet zone occupying a second approximately transverse cross-sectional region of said cell, said distribution system ( 2 ) comprising at least one liquid inlet ( 24 ) and one distribution outlet ( 32 : 32 ′), which are connected by an internal flow connection system ( 36 ), wherein,
said distribution outlet ( 32 ) consists of an annular or rectilinear distribution-slot ( 32 : 32 ′) with a radius or distance to the midpoint r between an inner slot-radius or distance from the cell centre and an outer slot-radius or distance from the cell centre, said radii or distances from the cell centre defining a slot-width w, through which annular distribution-slot ( 32 ) or rectilinear slot ( 32 ′) liquid entering said inlet is distributed to said cell along an approximately horizontal plane, wherein
the distribution-slot ( 32 : 32 ′) is arranged between an associated central distribution-area (A 1 ) extending inwards from r to the centre of the cell, and a peripheral distribution-area (A 2 ) extending outwards from r to the edge of the cell, and
the radius or distance r of the distribution-slot ( 32 : 32 ′) from the centre of the cell is such that the central distribution-area (A 1 ) is smaller than the peripheral distribution-area (A 2 ).
2. The distribution system ( 2 ) of claim 1 , wherein the radius r or distance from the centre of the distribution-slot ( 32 : 32 ′) is chosen such that the ratio between the central distribution-area (A 1 ) to the peripheral distribution-area (A 2 ) is in the interval 37:63 to 49.9 to 50.1.
3. The distribution system ( 2 ) of claim 1 , wherein the radius r of the annular distribution-slot ( 32 ) or distance from the centre of the rectilinear distribution slot ( 32 ′) is chosen such that the ratio between the central distribution-area (A 1 ) to the peripheral distribution-area (A 2 ) is in the interval 40:60 to 49.9:50.1.
4. The distribution system ( 2 ) of claim 1 , wherein the radius r of the annular distribution-slot ( 32 ) or distance from the centre of the rectilinear distribution slot ( 32 ′) is chosen such that the ratio between the central distribution-area (A 1 ) to the peripheral distribution-area (A 2 ) is approximately 45:55.
5. The distribution system ( 2 ) of claim 1 , wherein the internal flow connection system ( 36 ) is essentially rotationally symmetric.
6. The distribution system ( 2 ) of claim 1 , which includes a circular main body ( 4 ) having a top and a bottom surface ( 14 , 16 ), said main body ( 4 ) having a circular recess ( 18 ) formed in the bottom surface ( 16 ), and an inlet liquid connection between the liquid inlet ( 24 ) and the recess ( 18 ), and
a disc-shaped distribution body ( 6 ) concentrically arranged in said recess ( 18 ) and formed such that an annular distribution slot ( 32 ) is formed between the inner periphery of the recess ( 18 ) and the outer periphery of the distribution body ( 6 ), and such that a radial flow connection ( 36 ) is created between the top of the distribution body ( 6 ) and the bottom of the recess ( 18 ).
7. The distribution system ( 2 ) of claim 6 , wherein
said disc-shaped distribution body ( 6 ) includes a plate having spacing elements that protrude from the top surface, the spacing elements support the distribution body ( 6 ) with respect to the bottom of the recess ( 18 ), thereby defining the height of said radial flow connection ( 36 ).
8. The distribution system ( 2 ) of claim 1 , wherein the internal flow connection system ( 36 ) has a conical shaped or tapered fluid path with large channel height at the position of highest fluid velocity.
9. The distribution system ( 2 ) of claim 1 , including a distribution gap ( 106 ) occupying a cross-sectional region of a predetermined height, located directly after the distribution slot ( 32 ) in the longitudinal direction of flow.
10. The distribution system ( 2 ) of claim 9 , wherein the distribution gap ( 206 ) is conically shaped or tapered with respect to the distribution slot, and is formed such that the fluid path has a larger channel height at the position of higher fluid velocity.
11. The distribution system ( 2 ) of claim 1 , including a perforated plate ( 108 ) terminating the distribution gap ( 106 ) in the longitudinal direction of flow.
12. The distribution system ( 2 ) of claim 11 , wherein the perforated plate ( 108 ) is comprised of a perforated plate having spacing elements that protrude from the top surface, the spacing elements support the plate with respect to the bottom of the main body ( 4 ) and the distribution body ( 6 ), thereby defining the height of said distribution gap ( 106 ).
13. The distribution system ( 2 ) of claim 1 , wherein the flow connection system ( 36 ) comprises fillets/chamfers applied to the edges of the distribution body ( 6 ) anywhere the fluid is changing the main direction of flow.