A gas separation structure for an adsorption tower

Abstract

This utility model belongs to the field of air separation technology, specifically relating to a gas distribution structure for an adsorption tower. The structure is located inside the adsorption tower, which includes a tower body, an upper end cap, and a lower end cap. An air outlet and an air inlet are respectively provided in the middle of the upper and lower end caps. The gas distribution structure is located inside both the upper and lower end caps. The gas distribution structure includes a baffle and a mesh plate assembly. The baffle includes a lower baffle connected to the lower end cap via a support pipe and positioned above the air inlet of the lower end cap. The mesh plate assembly includes a first gas distribution mesh plate and a second gas distribution mesh plate. The second gas distribution mesh plate is positioned above the lower baffle. The second gas distribution mesh plate, the lower baffle, and the inner wall of the lower end cap together form an air inlet buffer chamber. A first gas distribution screen is provided between the second and first gas distribution mesh plates, and the first gas distribution mesh plate is connected to the second gas distribution mesh plate via a mesh plate pressure plate. This utility model buffers and distributes the compressed air entering the adsorption tower, achieving full utilization of the adsorbent.

Description

Technical Field

[0001] This utility model belongs to the field of air separation technology, specifically relating to a gas separation structure of an adsorption tower. Background Technology

[0002] Adsorption towers are commonly used devices in air separation to achieve adsorption separation processes. Adsorption towers are typically filled with adsorbents, which utilize the adsorption properties of certain components in the gas to achieve separation, purification, and refining. In typical adsorption towers, compressed air enters and is directly blown onto the adsorbent. This not only easily causes damage or pulverization of the adsorbent particles, reducing their lifespan, but also, because the cross-section of the adsorption tower is usually much larger than the inlet size, the compressed airflow is concentrated in one place and cannot be evenly distributed throughout the tower, resulting in insufficient gas treatment and inefficient use of the adsorbent within the tower. Utility Model Content

[0003] The purpose of this invention is to provide a gas distribution structure for an adsorption tower that can buffer and divert compressed air entering the adsorption tower, ensuring that the adsorbent in the adsorption tower can be fully utilized.

[0004] The technical solution of this utility model is as follows: a gas distribution structure for an adsorption tower, disposed inside the adsorption tower, the adsorption tower including a tower body, with an upper end cap and a lower end cap respectively provided at the upper and lower ends of the tower body, an outlet and an inlet respectively opened in the middle of the upper end cap and the lower end cap, and the gas distribution structure is provided inside the upper end cap and the gas distribution structure includes:

[0005] The baffle includes an upper baffle and a lower baffle with the same structure. The upper baffle and the lower baffle are respectively connected to the inner wall of the upper head or the lower head through several support tubes, and the upper baffle and the lower baffle are respectively located below the air outlet of the upper head and above the air inlet of the lower head.

[0006] The mesh plate assembly includes a third air distribution mesh plate, a first air distribution mesh plate, and a second air distribution mesh plate distributed vertically. Each of the first, second, and third air distribution mesh plates has a plurality of air distribution holes, which are evenly distributed on the first, second, and third air distribution mesh plates. The third air distribution mesh plate is located below the upper baffle and is connected to the inner wall of the upper end cap. The third air distribution mesh plate, the upper baffle, and the inner wall of the upper end cap together form an outlet buffer chamber. The second air distribution mesh plate is located above the lower baffle and is connected to the inner wall of the lower end cap. The second air distribution mesh plate, the lower baffle, and the inner wall of the lower end cap together form an inlet buffer chamber. A plurality of first air distribution mesh screens are provided between the second air distribution mesh plate and the first air distribution mesh plate. The first air distribution mesh plate is connected to the second air distribution mesh plate through a mesh plate pressing plate.

[0007] Preferably, the number of air distribution holes opened on the first air distribution screen plate and the second air distribution screen plate are the same size, and the positions of the number of air distribution holes on the first air distribution screen plate and the number of air distribution holes on the second air distribution screen plate correspond to each other.

[0008] Furthermore, the first gas distribution screen is covered with a second gas distribution screen. Both the second gas distribution screen and the first gas distribution screen are placed on the second gas distribution screen by several screen plate pressing plates. At the same time, the first gas distribution screen presses several layers of the first gas distribution screen between itself and the second gas distribution screen.

[0009] Specifically, several pressure plate fixing holes are evenly opened on the outer diameter of the first and second air distribution mesh plates; the several mesh plate pressure plates are all arc-shaped, and the several arc-shaped mesh plate pressure plates are arranged in sequence to form a ring that matches the outer diameter of the first and second air distribution mesh plates, and each mesh plate pressure plate is provided with an elongated hole, and the mesh plate pressure plate is connected to the first and second air distribution plates by bolts, elongated holes, and pressure plate fixing holes.

[0010] Preferably, both the first and second gas distribution screens are stainless steel wire mesh, with the first screen being a 20-mesh stainless steel wire mesh and the second screen being a 40-mesh stainless steel wire mesh.

[0011] The beneficial effects of this utility model are as follows: the compressed air entering the adsorption tower is diverted by the lower baffle, and the diverted compressed air is buffered by the inlet buffer chamber. The second gas distribution screen, two layers of first gas distribution screens, the first gas distribution screen, and the second gas distribution screen ensure that the gas is evenly distributed inside the tower, avoiding damage or pulverization of adsorbent particles due to gas impact, thereby avoiding affecting the service life of the adsorbent and making full use of the adsorbent. The gas after impurity separation, purification, and refinement by the adsorbent enters the outlet buffer chamber through the gas distribution holes on the third gas distribution screen, and the flow rate of the gas located in the middle of the tower is buffered by the upper baffle to ensure the stability of the gas flow. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a cross-sectional view of the present invention in its working state;

[0014] Figure 2 This is a side view of the lower baffle of this utility model;

[0015] Figure 3 This is a side view of the mesh panel assembly of this utility model;

[0016] Figure 4 This is a top view of the mesh panel assembly of this utility model;

[0017] Figure 5 This is a schematic diagram of the structure of the first gas-distributing screen and the second gas-distributing screen plate of this utility model;

[0018] Figure 6 for Figure 5 A magnified view of a portion of point A in the middle. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] In the description of this utility model, it should be noted that the terms "middle," "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0021] Since the cross-section of an adsorption tower is typically much larger than the inlet size, compressed air, after entering the tower, tends to concentrate in one place and blows directly onto the adsorbent. This not only easily causes damage or pulverization of the adsorbent particles, reducing their lifespan, but also prevents the concentrated compressed air from being evenly distributed throughout the tower, resulting in insufficient gas treatment and inefficient use of the adsorbent within the tower. Therefore, the inventors of this application provide a gas distribution structure for an adsorption tower that buffers and distributes the compressed air entering the tower, ensuring full utilization of the adsorbent.

[0022] like Figure 1-6 As shown, a gas distribution structure for an adsorption tower is provided inside the adsorption tower 1. The adsorption tower 1 includes a tower body 11. The upper and lower ends of the tower body 11 are respectively provided with an upper end cap 12 and a lower end cap 13. The middle parts of the upper end cap 12 and the lower end cap 13 are respectively provided with an air outlet 12-1 and an air inlet 13-1. The gas distribution structure is provided inside both the upper end cap 12 and the lower end cap 13. The gas distribution structure includes a baffle 2 and a mesh plate assembly 3.

[0023] Among them, such as Figure 1-2 As shown, the baffle 2 includes an upper baffle 21 and a lower baffle 22. The upper baffle 21 and the lower baffle 22 are respectively connected to the inner wall of the upper end cap 12 or the lower end cap 13 through a number of support pipes 23. The upper baffle 21 and the lower baffle 22 are respectively located below the air outlet 12-1 of the upper end cap 12 and above the air inlet 13-1 of the lower end cap 13.

[0024] Based on the above embodiments, when compressed air enters the interior of adsorption tower 1 from the inlet 13-1 at the bottom of adsorption tower 1, the compressed air is diverted by the lower baffle 22 to ensure that the gas can be evenly distributed to all spaces of adsorption tower 1, so as to make full use of the adsorbent. After the compressed air is separated, purified and refined by the adsorbent, it is discharged from adsorption tower 1 through the outlet 12-1. During this process, since the diameter of the outlet 12-1 is much smaller than the inner diameter of the tower body 11, the gas in the middle of the tower body 11 will be quickly discharged from the outlet 12-1. The upper baffle 21 buffers the flow rate of the compressed air in the middle of the tower body 11 to ensure the stability of the gas flow.

[0025] In this embodiment, as Figure 3-5 As shown, the mesh plate assembly 3 includes a third air distribution mesh plate 33, a first air distribution mesh plate 31, and a second air distribution mesh plate 32 distributed vertically. Each of the first air distribution mesh plate 31, the second air distribution mesh plate 32, and the third air distribution mesh plate 33 has a plurality of air distribution holes 34, which are evenly distributed on the first air distribution mesh plate 31, the second air distribution mesh plate 32, and the third air distribution mesh plate 33. The third air distribution mesh plate 33 is located below the upper baffle 21 and is connected to the inner wall of the upper end cap 12. The third air distribution mesh plate 33, the upper baffle 21, and... The inner wall of the upper end cap 12 together forms an outlet buffer chamber 33-1; the second air distribution mesh plate 32 is disposed above the lower baffle 22, and the second air distribution mesh plate 32 is connected to the inner wall of the lower end cap 13. The second air distribution mesh plate 32, the lower baffle 22 and the inner wall of the lower end cap 13 together form an inlet buffer chamber 32-1. Several layers of first air distribution mesh screens 38 are provided between the second air distribution mesh plate 32 and the first air distribution mesh plate 31. The first air distribution mesh plate 31 is connected to the second air distribution mesh plate 32 through a mesh plate pressing plate 35. Specifically, in this embodiment, the first air distribution mesh screen 38 is provided in two layers.

[0026] The first air distribution plate 31 and the second air distribution plate 32 have several air distribution holes 34 of the same size, and the positions of the several air distribution holes 34 on the first air distribution plate 31 and the several air distribution holes 34 on the second air distribution plate 32 correspond to each other.

[0027] Based on the above embodiments, the first gas distribution plate 31 and the second gas distribution plate 32 receive the adsorbent in the adsorption tower 1, while the gas distribution holes 34 opened on the first gas distribution plate 31 and the second gas distribution plate 32 ensure that the gas can smoothly contact the adsorbent in the tower body 11 of the adsorption tower 1. When compressed air enters the adsorption tower 1 through the air inlet 13-1, the compressed air is diverted by the lower baffle 22. After being buffered by the air inlet buffer chamber 32-1, the compressed air is evenly distributed in the tower body of the adsorption tower 1 under the action of the second gas distribution screen 32, the first gas distribution screen 38 and the first gas distribution screen 31, so as to achieve full contact between the compressed air and the adsorbent, while avoiding impact on the adsorbent. When the gas in the tower body 11 leaves the adsorption tower 1 through the air outlet 12-1, the gas flow rate is buffered by the air outlet buffer chamber 33-1 and the upper baffle 21.

[0028] In this embodiment, a second gas distribution screen 39 is covered on the first gas distribution screen plate 31. The second gas distribution screen 39 and the first gas distribution screen plate 31 are both disposed on the second gas distribution screen plate 32 through a number of screen plate pressing plates 35. At the same time, the first gas distribution screen plate 31 presses a number of layers of first gas distribution screens 38 between itself and the second gas distribution screen plate 32.

[0029] Specifically, a plurality of pressure plate fixing holes 36 are evenly provided on the outer diameter of the first air distribution mesh plate 31 and the second air distribution mesh plate 32; the plurality of mesh plate pressure plates 35 are all arc-shaped, and the plurality of arc-shaped mesh plate pressure plates 35 are arranged in sequence to form a ring that matches the outer diameter of the first air distribution mesh plate 31 and the second air distribution mesh plate 32, and each mesh plate pressure plate 35 is provided with an elongated hole 35-1, and the mesh plate pressure plate 35 is connected to the first air distribution plate 31 and the second air distribution plate 32 by bolts 37, elongated holes 35-1 and pressure plate fixing holes 36. At the same time, the installation position of bolts 37 can be adjusted by elongated holes 35-1, so that the mesh plate pressure plate 35 is suitable for first air distribution mesh plates 31 and second air distribution mesh plates 32 of different sizes.

[0030] In addition, both the first gas separator screen 38 and the second gas separator screen 39 are made of stainless steel wire mesh, with the first gas separator screen 38 being 20 mesh stainless steel wire mesh and the second gas separator screen 39 being 40 mesh stainless steel wire mesh.

[0031] Based on the above embodiments, the second gas distribution screen 32 is welded to the inside of the lower end cap. The second gas distribution screen 39, the first gas distribution screen 31, and several first gas distribution screens 38 are all pressed onto the second gas distribution screen 32 by the screen plate pressure plate 35. The screen plate pressure plate 35 can be removed from the first gas distribution screen 31 by simply removing the bolts 37. At this time, the first gas distribution screen 31 and the second gas distribution screen 32 can be separated, which facilitates the replacement of the first gas distribution screens 38 and the second gas distribution screens 39. The first gas distribution screens 38 and the second gas distribution screens 39 ensure that the adsorbent will not leak out of the adsorption tower 1. At the same time, the first gas distribution screens 38 and the second gas distribution screens 39, which are both stainless steel wire mesh, will not affect the flow of compressed air.

[0032] The working principle of this utility model is as follows: Compressed air enters the lower end cap 13 of the adsorption tower 1 through the air inlet 13-1. The compressed air is divided by the lower baffle 22. The divided compressed air is buffered by the air inlet buffer chamber 32-1. The buffered gas passes through the second gas distribution screen 32, two layers of first gas distribution screens 38, the first gas distribution screen 31, and the second gas distribution screen 39 in sequence before entering the tower body 11 of the adsorption tower 1. At this time, the compressed air is evenly distributed inside the tower body 11 and comes into contact with the adsorbent, avoiding damage or pulverization of adsorbent particles due to gas impact, and at the same time, the adsorbent can be fully utilized. After the gas is separated, purified, and refined by the adsorbent, it enters the interior of the outlet buffer chamber 33-1 through the gas distribution holes 34 on the third gas distribution screen 33. The upper baffle 21 buffers the flow rate of the gas located in the middle of the tower body 11 to ensure the stability of the gas flow.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A gas distribution structure of an adsorption tower, which is arranged in the interior of the adsorption tower, the adsorption tower comprising a tower body, upper and lower ends of the tower body being respectively provided with an upper head and a lower head, the middle parts of the upper head and the lower head being respectively provided with a gas outlet and a gas inlet, the interiors of the upper head and the lower head being respectively provided with the gas distribution structure, characterized in that, The gas separation structure includes: The baffle includes an upper baffle and a lower baffle with the same structure. The upper baffle and the lower baffle are respectively connected to the inner wall of the upper head or the lower head through several support tubes, and the upper baffle and the lower baffle are respectively located below the air outlet of the upper head and above the air inlet of the lower head. The mesh plate assembly includes a third air distribution mesh plate, a first air distribution mesh plate, and a second air distribution mesh plate distributed vertically. Each of the first, second, and third air distribution mesh plates has a plurality of air distribution holes, which are evenly distributed on the first, second, and third air distribution mesh plates. The third air distribution mesh plate is located below the upper baffle and is connected to the inner wall of the upper end cap. The third air distribution mesh plate, the upper baffle, and the inner wall of the upper end cap together form an outlet buffer chamber. The second air distribution mesh plate is located above the lower baffle and is connected to the inner wall of the lower end cap. The second air distribution mesh plate, the lower baffle, and the inner wall of the lower end cap together form an inlet buffer chamber. A plurality of first air distribution mesh screens are provided between the second air distribution mesh plate and the first air distribution mesh plate. The first air distribution mesh plate is connected to the second air distribution mesh plate through a mesh plate pressing plate.

2. The gas separation structure of an adsorption tower according to claim 1, characterized in that, The first and second air distribution mesh plates have the same size of several air distribution holes, and the positions of several air distribution holes on the first and second air distribution mesh plates correspond to those of several air distribution holes on the second air distribution mesh plate.

3. The gas separation structure of an adsorption tower according to claim 2, characterized in that, The first gas distribution screen is covered with a second gas distribution screen. Both the second gas distribution screen and the first gas distribution screen are placed on the second gas distribution screen by several screen plate pressing plates. At the same time, the first gas distribution screen presses several layers of the first gas distribution screen between itself and the second gas distribution screen.

4. The gas separation structure of an adsorption tower according to claim 3, characterized in that, The outer diameters of the first and second air distribution mesh plates are evenly provided with several pressure plate fixing holes; the pressure plates are all arc-shaped, and the several arc-shaped pressure plates are arranged in sequence to form a ring that matches the outer diameters of the first and second air distribution mesh plates. Each pressure plate is provided with an elongated hole, and the pressure plates are connected to the first and second air distribution plates by bolts, elongated holes, and pressure plate fixing holes.

5. The gas separation structure of an adsorption tower according to claim 4, characterized in that, Both the first and second gas distribution screens are made of stainless steel wire mesh. The first gas distribution screen is made of 20-mesh stainless steel wire mesh, and the second gas distribution screen is made of 40-mesh stainless steel wire mesh.

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