Groove type liquid collection redistributor

Abstract

The utility model discloses a groove type liquid collection redistributor which comprises a wall flow prevention ring, a V-shaped liquid collection plate, a liquid guide groove, a distribution groove, a communicating pipe and a liquid baffle, the outer wall of the wall flow prevention ring is fixed on the inner wall of the tower in the circumferential direction and is downwards inclined; the V-shaped liquid collecting plates are uniformly arranged, two ends of each V-shaped liquid collecting plate are fixedly connected with the inner wall of the tower, and the V-shaped liquid collecting plates are positioned below the wall flow preventing ring; a plurality of liquid leakage holes are formed in the bottom of each V-shaped liquid collection plate, and a liquid guide groove is formed below each liquid leakage hole; the plurality of distribution grooves are uniformly arranged, two ends of each distribution groove are fixedly connected with the inner wall of the tower, and the distribution grooves are positioned below the V-shaped liquid collecting plate and staggered with the V-shaped liquid collecting plate; two ends of each liquid guide groove correspond to two adjacent distribution grooves; every two adjacent distribution grooves are communicated through a communicating pipe; the distribution groove is a sharp-bottom groove, and a plurality of distribution holes are formed in the two inclined faces of the bottom of the distribution groove. Liquid baffles are fixed on the two side walls of each distribution groove, and the lower ends of the liquid baffles are lower than the groove bottoms of the distribution grooves.

Description

Technical Field

[0001] The utility model relates to internal components of a chemical tower, in particular to a trough-type liquid collecting and redistributing device. Background Art

[0002] The packed tower is a very important gas-liquid mass transfer device in chemical production. Due to its advantages such as high separation efficiency, low resistance, and large throughput, it is currently widely used in industries such as chemical engineering, oil refining, light industry, and pharmaceuticals. The packed tower generally consists of several sections of packing, an initial liquid distributor, a liquid redistributor, a gas distributor, etc. Uniform liquid distribution performance is an important factor affecting the efficiency of the packed tower, which determines whether the performance of the packing can be fully utilized.

[0003] Among them, the liquid redistributor is arranged between two sections of packing, playing the role of collecting the liquid flowing down from the upper section of packing and redistributing the liquid. It enables the liquid to evenly flow onto the top of the lower section of packing, providing a larger contact area for gas-liquid contact, thereby improving the production efficiency of the packed tower. Currently, the common liquid redistributors are in the form of a combination of a liquid collecting device and a trough-type distributor or a trough-tray gas-liquid redistributor. Both of these two types of liquid redistributors are widely used, but there will be certain problems in actual applications:

[0004] 1. The two types of liquid distributors have extremely high requirements for the installation levelness. Only on the premise of ensuring the levelness can a uniform distribution effect be achieved. Especially for a packed tower with a small liquid volume, the installation levelness error is extremely likely to cause no liquid in a local area of the tower cross-section, resulting in a situation of gas short-circuit, seriously affecting the production efficiency of the packed tower;

[0005] 2. The form of the combination of the liquid collecting device and the trough-type distributor occupies a large space inside the tower, increasing the tower height and the equipment cost;

[0006] 3. The trough-tray gas-liquid redistributor has a complex structure and poor anti-blocking performance. Content of the Utility Model

[0007] Aiming at the deficiencies of the prior art, the technical problem to be solved by the utility model is to provide a trough-type liquid collecting and redistributing device.

[0008] The technical solution adopted by the utility model to solve the above technical problem is to provide a trough-type liquid collecting and redistributing device, which is characterized in that the redistributor includes an anti-wall-flow ring, a V-shaped liquid collecting plate, a liquid guiding groove, a distribution groove, a connecting pipe, and a liquid baffle;

[0009] The outer wall of the anti-wall flow ring is circumferentially fixed on the inner wall of the tower and is inclined downward; several V-shaped liquid collecting plates are evenly arranged, and both ends are fixedly connected to the inner wall of the tower, and are located below the anti-wall flow ring; several liquid leakage holes are arranged at the bottom of each V-shaped liquid collecting plate, and a liquid guiding groove is arranged below each liquid leakage hole; several distribution grooves are evenly arranged and both ends are fixedly connected to the inner wall of the tower, and are located below the V-shaped liquid collecting plate and are arranged in a staggered manner with the V-shaped liquid collecting plate; both ends of each liquid guiding groove correspond to two adjacent distribution grooves; two adjacent distribution grooves are communicated through a connecting pipe; the distribution groove is a pointed-bottom groove, and several distribution holes are arranged on both inclined surfaces at the bottom; baffles are fixedly arranged on both side walls of each distribution groove, and the lower ends of the baffles are lower than the bottom of the distribution groove.

[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0011] (1) All adjacent distribution grooves are connected through a connecting pipe. Even when there is a certain error in the installation level, it can still ensure that each distribution groove has a certain amount of liquid, and the gas short-circuit phenomenon caused by the lack of liquid in a local area of the tower cross-section will not occur.

[0012] (2) For a packed tower with a small liquid volume or a small tower diameter, the distribution groove can be set as a narrow groove to maintain a certain liquid level in the groove and ensure the uniformity of distribution.

[0013] (3) The V-shaped liquid collecting plate is used to collect the liquid flowing down from the upper packing, reducing the overall height of the redistributor and saving the space inside the tower.

[0014] (4) The distribution groove is a pointed-bottom groove, and the distribution holes are arranged on the inclined bottom surface of the distribution groove, which has excellent anti-blocking performance and can effectively extend the maintenance cycle of the redistributor.

[0015] (5) The structure of the present utility model is reasonably designed, has a wide application range, and the liquid is evenly distributed, which can significantly improve the production efficiency of the packed tower. Description of the Drawings

[0016] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present utility model;

[0017] Figure 2 It is a front view schematic diagram of the overall structure of the present utility model;

[0018] Figure 3 It is a top view schematic diagram of the overall structure of the present utility model.

[0019] In the figure, anti-wall flow ring 1, V-shaped liquid collecting plate 2, liquid leakage hole 21, connecting plate 3, liquid guiding groove 4, distribution groove 5, distribution hole 51, connecting pipe 6 and baffle 7. Specific Embodiments

[0020] The following are specific embodiments of the present utility model. The specific embodiments are only used for further detailed description of the present utility model and do not limit the protection scope of the claims of the present utility model.

[0021] The present utility model provides a trough-type liquid collection and redistribution device (hereinafter referred to as the redistribution device), which is characterized in that the redistribution device includes an anti-wall-flow ring 1, a V-shaped liquid collection plate 2, a liquid guiding groove 4, a distribution groove 5, a communicating pipe 6 and a liquid baffle 7;

[0022] The outer wall of the anti-wall-flow ring 1 is fixedly attached to the inner wall of the circular packing tower along the circumferential direction and is inclined downward at an angle α with respect to the tower wall; a plurality of V-shaped liquid collection plates 2 are arranged evenly, and both ends are fixedly connected to the inner wall of the tower and are located below the anti-wall-flow ring 1; a plurality of liquid leakage holes 21 are provided at the bottom of each V-shaped liquid collection plate 2, and a liquid guiding groove 4 is provided below each liquid leakage hole 21; a plurality of distribution grooves 5 are arranged evenly and both ends are fixedly connected to the inner wall of the tower, are located below the V-shaped liquid collection plates 2 and are arranged staggeredly with the V-shaped liquid collection plates 2; both ends of each liquid guiding groove 4 correspond to two adjacent distribution grooves 5; two adjacent distribution grooves 5 are communicated through a communicating pipe 6; the distribution groove 5 is a sharp-bottomed groove, and a plurality of distribution holes 51 are provided on both inclined surfaces at the bottom; liquid baffles 7 are fixedly attached to both side walls of each distribution groove 5, and the lower end of the liquid baffle 7 is lower than the bottom of the distribution groove 5.

[0023] Preferably, the anti-wall-flow ring 1 is a conical ring structure.

[0024] Preferably, the angle α between the anti-wall-flow ring 1 and the tower wall is 15° to 75°.

[0025] Preferably, a plurality of V-shaped liquid collection plates 2 are arranged evenly in a circle adapted to the cross-section of the tower; a plurality of distribution grooves 5 are arranged evenly in a circle adapted to the cross-section of the tower.

[0026] Preferably, the distance h1 between the upper end of the V-shaped liquid collection plate 2 and the lower end of the anti-wall-flow ring 1 is 50 mm to 600 mm.

[0027] Preferably, the width a of the upper end opening of the V-shaped liquid collection plate 2 is 50 mm to 400 mm, the gap width b between two adjacent distribution grooves 5 is 40 mm to 400 mm, and a > b.

[0028] Preferably, the opening size of the liquid leakage hole 21 is determined according to specific process conditions, and it is necessary to ensure that the liquid level height in the V-shaped liquid collection plate 2 is not less than 10 mm.

[0029] Preferably, the liquid guiding groove 4 is a trough-type structure with vertical plates on both sides, and the trough height h2 is 10 mm to 100 mm.

[0030] Preferably, the length of the liquid guiding groove 4 is not less than the gap width b between two adjacent distribution grooves 5, and the size needs to ensure that the liquid leaked from the liquid leakage hole 21 can be received.

[0031] Preferably, all the connecting pipes 6 are located at the same horizontal plane.

[0032] Preferably, the diameter of the connecting pipe 6 is determined according to specific process conditions; the distance h3 from the lower edge of the connecting pipe 6 to the bottom end of the distribution tank 5 is 30 mm to 150 mm.

[0033] Preferably, a plurality of distribution holes 51 are uniformly arranged on each inclined surface at the bottom of the distribution tank 5.

[0034] Preferably, the aperture of the distribution hole 51 is determined according to specific process conditions, and it is necessary to ensure that the liquid level height in the distribution tank 5 is not less than 50 mm;

[0035] Preferably, the height h4 of the lower end of the liquid baffle 7 below the bottom of the distribution tank 5 is 20 mm to 120 mm, which is determined according to specific working conditions.

[0036] Preferably, the redistributor further includes a connecting plate 3; the V-shaped liquid collecting plate 2 and the distribution tank 5 are fixedly connected through the connecting plate 3.

[0037] The working principle and working process of the present utility model are as follows:

[0038] Part of the liquid dripping from the upper section of the packing directly falls into the V-shaped liquid collecting plate 2 and the distribution tank 5, and another part of the liquid flowing down along the tower wall also falls into the V-shaped liquid collecting plate 2 and the distribution tank 5 under the action of the anti-wall flow ring 1; the liquid falling into the V-shaped liquid collecting plate 2 falls into the liquid guiding groove 4 through the liquid leakage holes 21, and then flows into the corresponding distribution tanks 5 at both ends of the liquid guiding groove 4 along the liquid guiding groove 4; after the liquid accumulates a certain liquid level in the distribution tank 5, the liquid is evenly distributed in all the distribution tanks 5 through the connecting pipes 6, so that a stable and equal liquid level is maintained in each distribution tank 5 all the time; the liquid in the distribution tank 5 is sprayed out through the distribution holes 51 under the action of the liquid level pressure and hits one side of the liquid baffle 7, and then evenly and dispersedly drips onto the next section of the packing along the liquid baffle 7; the gas sequentially passes through the gaps between the distribution tanks 5 and the gaps between the V-shaped liquid collecting plates 2 from bottom to top, passes through the redistributor, and continues to rise to achieve uniform distribution.

[0039] Those not described in the present utility model are applicable to the prior art.

Claims

1. A trough-type liquid collection and redistribution device, characterized in that, The redistributor includes a wall flow prevention ring (1), a V-shaped liquid collecting plate (2), a liquid guiding groove (4), a distribution groove (5), a connecting pipe (6) and a liquid baffle (7). The outer wall of the wall flow prevention ring (1) is circumferentially fixed to the inner wall of the tower and is arranged obliquely downward; a plurality of V-shaped liquid collecting plates (2) are evenly arranged, and both ends are fixedly connected to the inner wall of the tower and are located below the wall flow prevention ring (1); a plurality of liquid leakage holes (21) are provided at the bottom of each V-shaped liquid collecting plate (2), and a liquid guiding groove (4) is provided below each liquid leakage hole (21); a plurality of distribution grooves (5) are evenly arranged and both ends are fixedly connected to the inner wall of the tower, are located below the V-shaped liquid collecting plates (2) and are arranged staggeredly with the V-shaped liquid collecting plates (2); both ends of each liquid guiding groove (4) correspond to two adjacent distribution grooves (5); two adjacent distribution grooves (5) are communicated through a connecting pipe (6); the distribution groove (5) is a sharp-bottomed groove, and a plurality of distribution holes (51) are provided on both inclined surfaces at the bottom; liquid baffles (7) are fixedly arranged on both side walls of each distribution groove (5), and the lower end of the liquid baffle (7) is lower than the bottom of the distribution groove (5).

2. The trough-type liquid collection and redistribution device according to claim 1, wherein The wall flow prevention ring (1) is of a conical ring structure; the included angle α between the wall flow prevention ring (1) and the tower wall is 15° to 75°.

3. The trough liquid collection and redistribution device according to claim 1, wherein A plurality of V-shaped liquid collecting plates (2) are evenly arranged in a circle adapted to the cross section of the tower; a plurality of distribution grooves (5) are evenly arranged in a circle adapted to the cross section of the tower.

4. The trough-type liquid collection and redistribution device according to claim 1, characterized in that, The distance h1 between the upper end of the V-shaped liquid collecting plate (2) and the lower end of the wall flow prevention ring (1) is 50 mm to 600 mm; the opening size of the liquid leakage hole (21) is determined according to specific process conditions, and it is necessary to ensure that the liquid level height in the V-shaped liquid collecting plate (2) is not less than 10 mm.

5. The trough-type liquid collecting and redistributing device according to claim 1, wherein The width a of the upper end opening of the V-shaped liquid collecting plate (2) is 50 mm to 400 mm, the gap width b between two adjacent distribution grooves (5) is 40 mm to 400 mm, and a > b.

6. The trough-type liquid collection and redistribution device according to claim 1, characterized in that, The liquid guiding groove (4) is of a groove structure with vertical plates on both sides, and the groove height h2 is 10 mm to 100 mm; the length of the liquid guiding groove (4) is not less than the gap width b between two adjacent distribution grooves (5), and the size is ensured to be able to catch the liquid leaking from the liquid leakage hole (21).

7. The trough-type liquid collection and redistribution device according to claim 1, wherein All the connecting pipes (6) are located on the same horizontal plane; the distance h3 from the lower edge of the connecting pipe (6) to the bottom end of the distribution groove (5) is 30 mm to 150 mm.

8. The trough liquid collection and redistribution device according to claim 1, characterized in that A plurality of distribution holes (51) are evenly arranged on each inclined surface at the bottom of the distribution groove (5); the aperture of the distribution hole (51) is determined according to specific process conditions, and it is necessary to ensure that the liquid level height in the distribution groove (5) is not less than 50 mm.

9. The trough-type liquid collection and redistribution device according to claim 1, wherein The height h4 by which the lower end of the liquid baffle (7) is lower than the bottom of the distribution groove (5) is 20 mm to 120 mm.

10. The trough-type liquid collecting and redistributing device according to claim 1, characterized in that, The redistributor further includes a connecting plate (3); the V-shaped liquid collecting plate (2) and the distribution groove (5) are fixedly connected through the connecting plate (3).

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