Gas inlet distribution device and gas column comprising the same

Abstract

The utility model provides a kind of air intake distribution device and the gas tower including the air intake distribution device, the air intake distribution device is used to guide gas into gas tower, the air intake distribution device includes multiple air intake pipes being set on the same side of tower body outside and being communicated with tower body, and at least two air intake pipes are tangentially communicated with two opposite tower walls of tower body, so that the gas entering from the air intake pipe of one tower wall flows clockwise along the tower wall, and the gas entering from the air intake pipe of the opposite another tower wall flows counterclockwise along the tower wall.The air intake distribution device and the gas tower including the air intake distribution device avoid the concentration of high-speed gas entering the tower body, and disperse the air intake flow, which not only meets the requirement of large air intake volume, realizes the uniform distribution of gas, but also avoids increasing the tower height, reduces the manufacturing cost of tower body;It also reduces the size of air intake distribution device and simplifies the structure.

Description

Technical Field

[0001] This utility model relates to the technical field of chemical production, and in particular to an air inlet distribution device and a gas tower including the air inlet distribution device. Background Technology

[0002] In chemical processes such as distillation, absorption, and extraction, sufficient contact between gas and liquid is required to achieve mass transfer and separation. For example, in a distillation column, the volatile components in the gas phase and the non-volatile components in the liquid phase undergo multiple mass transfers on the trays or packing. Uneven gas distribution can lead to insufficient mass transfer in some areas, affecting product purity and separation efficiency. In an absorption column, uneven gas distribution can prevent the absorbent from fully absorbing the target gas, reducing absorption efficiency and impacting subsequent processes. For some gas-liquid reaction processes, such as hydrogenation and oxidation, uniform gas distribution ensures that the reactants are uniformly mixed within the column, allowing the reaction to proceed under suitable conditions, improving reaction selectivity and conversion rate, reducing side reactions, and guaranteeing product quality and yield.

[0003] Furthermore, if gas concentrates in a specific area before entering the tower, it can cause significant impact and wear to the tower walls, packing, or trays in that area. Prolonged operation with such a concentration can lead to localized damage and shorten the equipment's lifespan. A gas distributor ensures even gas flow, reducing localized impacts and protecting internal components, thus preventing localized damage.

[0004] In many industrial sectors such as chemical and petrochemical industries, the expansion of production scale and the increasing demands for product quality have placed higher requirements on the performance of separation equipment such as distillation towers and absorption towers. With the expansion of production scale, gas feed pipes and feed rates are becoming increasingly larger, posing new challenges to the design of gas distribution devices.

[0005] For example, as production scales up, the diameter of tower-type separation equipment and the bottom gas inlet are becoming increasingly larger. Some towers have a diameter greater than 10m, and the diameter of the bottom gas inlet may be greater than 3m. Combined with the internal space required for gas distribution, the required height of the bottom gas inlet section may reach as high as 9m, significantly increasing the tower height and correspondingly increasing the cost of tower materials and operating energy consumption. Furthermore, installing inlet pipes around the entire tower would result in a large and complex gas distribution device, increasing manufacturing costs. Utility Model Content

[0006] The technical problem to be solved by this utility model is to overcome the shortcomings of existing gas distribution devices in that they are difficult to achieve large gas intake and uniform distribution while avoiding increasing tower height and manufacturing costs, and to provide a gas intake distribution device and a gas tower including the gas intake distribution device.

[0007] The present invention solves the above-mentioned technical problems through the following technical solution:

[0008] An air intake distribution device is used to guide airflow into a gas tower. The air intake distribution device includes a plurality of air intake pipes disposed on the same side of the gas tower body and connected to the tower body. At least two of the air intake pipes are tangentially connected to two opposite tower walls of the tower body, such that gas entering from the air intake pipe of one tower wall flows clockwise along the tower wall, and gas entering from the air intake pipe of the opposite tower wall flows counterclockwise along the tower wall.

[0009] In this design, the air intake distribution device uses multiple intake pipes to prevent the high-speed gas from concentrating upon entering the tower, thus dispersing the intake flow. This allows for a smaller pipe diameter, meeting the large intake volume requirements of large-diameter separation equipment while avoiding increased tower height and reducing manufacturing costs. Furthermore, placing multiple intake pipes on the same side of the tower eliminates the need for intake from multiple sides, allowing for centralized arrangement of the gas supply pipelines, simplifying the structure, reducing footprint, and saving manufacturing costs. Two of the intake pipes are tangentially connected to two opposite tower walls, causing the incoming airflow to flow in opposite directions from the two opposite walls along the annular inner wall of the tower. This buffers the high-speed airflow entering from the intake pipes, and the two opposing airflows merge and flow slowly towards the center of the tower, thus buffering the high-speed airflow and distributing it evenly within the tower, achieving uniform gas distribution.

[0010] Preferably, at least two of the air inlet pipes tangentially connected to the tower body are parallel to each other, and / or, at least two of the air inlet pipes are tangentially connected to two opposite tower walls of the tower body.

[0011] In this design, the two inlet pipes tangentially connected to the tower body are arranged parallel to each other, which facilitates the symmetrical flow of the two inlet air streams towards each other, making it easier to control the airflow velocity and flow rate, resulting in a more uniform gas distribution. The two inlet pipes are tangentially connected to the two opposite walls of the tower body, allowing the airflow within the inlet pipes to flow more closely to the inner wall of the tower body, further improving the buffering effect and thus promoting uniform gas distribution.

[0012] Preferably, at least two air inlet pipes tangentially connected to the tower body each include a first air inlet and a second air inlet. Starting from the first air inlet and the second air inlet, a plurality of baffles are spaced apart along the airflow direction into the tower body. The baffles protrude from the inner wall and are configured to guide the corresponding airflow, so that part of the airflow flows from the inner wall toward the center of the tower body. The baffles are provided with flow distribution holes that penetrate the baffle along the airflow direction, so that part of the airflow passes through the flow distribution holes and enters the rear side of the baffle along the airflow direction.

[0013] In this design, the aforementioned spoiler blocks the high-speed airflow from the intake pipe, thus guiding and buffering the gas flow. The spoiler has flow-guiding holes positioned relative to the airflow direction, allowing the airflow to pass through and maintaining smooth flow. Simultaneously, other parts of the spoiler's surface impede the gas flow velocity, creating a guiding effect.

[0014] Preferably, starting from the first air inlet and / or the second air inlet, the number of baffles arranged at intervals along the airflow direction of the gas entering the tower body is three or more, and the distance between two adjacent baffles gradually increases along the airflow direction; and the height of each baffle protruding from the inner wall of the tower body gradually increases along the airflow direction.

[0015] In this design, the above-mentioned configuration adapts to the gradual decrease in gas velocity from the inlet to the inside of the tower, resulting in a slow and stable change in gas velocity rather than a rapid change, which is beneficial for uniform gas distribution. Along the airflow direction, the height of each baffle protruding from the inner wall of the tower gradually increases, allowing the reduced-velocity airflow to have a longer guiding distance under the action of the higher baffles, improving the guiding effect and thus contributing to uniform gas distribution.

[0016] Preferably, the spoiler includes a guide surface relative to the airflow direction, the guide surface area of ​​which gradually decreases from the tower wall to the center of the tower.

[0017] In this scheme, since the incoming airflow flows along the annular inner wall of the tower and gradually diffuses towards the center of the tower, the guide area is set as described above to adapt to the gradual decrease in gas velocity from the tower wall to the center of the tower, so that the gas velocity changes slowly and steadily, which is conducive to the uniform distribution of gas.

[0018] Preferably, along the airflow direction, the number of airflow holes on the spoiler plate gradually increases, and the airflow holes of two adjacent spoiler plates are staggered in the airflow direction.

[0019] In this design, the gas velocity and fluidity gradually decrease along the airflow direction. Therefore, the number of flow holes on the baffles is gradually increased, resulting in less obstruction of the airflow at the end of the airflow direction, improving gas fluidity and promoting uniform gas distribution. Furthermore, the flow holes on adjacent baffles are staggered along the airflow direction, which alters the gas flow direction upon entering the tower, reducing high-speed gas regions and providing better buffering. This also reduces the stress on the baffles, increasing their stability.

[0020] Preferably, the baffle plate includes a guide plate and a support plate, one end of the guide plate and one end of the support plate are spaced apart and connected to the inner wall of the tower body, and the other end of the guide plate and the other end of the support plate are connected; the guide plate and the support plate are provided with flow distribution holes in the direction of airflow to allow airflow to pass in the same direction.

[0021] In this design, the spoiler adopts the above-mentioned structural configuration. The guide vanes and support vanes form a mutually supportive structure, which is stable and can withstand the impact of high-speed airflow, thus enabling the spoiler to produce an effective airflow guiding effect.

[0022] Preferably, the guide vane and / or the support plate have a guide surface that gradually decreases in size from the tower wall to the center of the tower relative to the airflow direction.

[0023] In this scheme, based on the above-mentioned mutual support structure, the guide plate and the support plate adopt the above-mentioned arrangement of their guide surfaces, so that the overall baffle plate forms a cone structure, which not only improves the structural stability, but also adapts to the gradual decrease of gas velocity from the tower wall to the center of the tower, so that the gas velocity changes slowly and steadily, which is conducive to the uniform distribution of gas.

[0024] Preferably, the air intake distribution device further includes an air intake manifold disposed outside the tower body, the air intake manifold being connected to a plurality of air intake pipes.

[0025] In this scheme, the air intake distribution device achieves centralized distribution of gas and then disperses it into the tower body through the above-mentioned settings.

[0026] A gas tower comprising an inlet distribution device as described above.

[0027] In this scheme, the gas tower avoids the concentration of high-speed gas entering the tower body through the above-mentioned air inlet distribution device, and disperses the air inlet flow rate. This not only meets the requirement of large air inlet volume and achieves uniform gas distribution, but also avoids increasing the tower height and reduces the manufacturing cost of the tower body; it also reduces the size of the air inlet distribution device and simplifies the structure.

[0028] The positive and progressive effects of this utility model are as follows: the air inlet distribution device and the gas tower including the air inlet distribution device avoid the high-speed gas entering the tower body from concentrating and disperse the air inlet flow rate, which not only meets the requirements of large air inlet volume and achieves uniform gas distribution, but also avoids increasing the tower height and reduces the manufacturing cost of the tower body; it also reduces the size of the air inlet distribution device and simplifies the structure. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of the air intake distribution device embodiment of this utility model on the tower body.

[0030] Figure 2 for Figure 1 Top view.

[0031] Figure 3 This is a schematic diagram of the structure of the first spoiler embodiment of this utility model.

[0032] Figure 4 This is a schematic diagram of the structure of the second spoiler embodiment of the present invention.

[0033] Figure 5 This is a schematic diagram of the structure of the third spoiler embodiment of this utility model.

[0034] Figure 6 This is a schematic diagram illustrating the change in airflow velocity when simulating gas flow in the air inlet distribution device and tower body in Embodiment 1 of this utility model.

[0035] Explanation of reference numerals in the attached figures:

[0036] Tower 1

[0037] Tower Wall 11

[0038] Tangential line 110 at the connection of the tower wall

[0039] Tower Center 12

[0040] Intake manifold 2

[0041] Distribution pipe 3

[0042] Intake pipe 4

[0043] First air intake 41

[0044] Second air intake 42

[0045] Axial wall line of the intake pipe 43

[0046] Spoiler 5

[0047] First spoiler 51

[0048] Second spoiler 52

[0049] Third spoiler 53

[0050] 510 air guide plate

[0051] Support plate 511

[0052] Flow holes 512

[0053] 513 guide surface

[0054] Gas flow direction A into the tower Detailed Implementation

[0055] The present invention will be described more clearly and completely below with reference to the accompanying drawings, using a preferred embodiment.

[0056] Example 1

[0057] This embodiment provides an air inlet distribution device for guiding airflow into a gas tower. The gas tower is a tower used in chemical processes such as distillation, absorption, and extraction. The gas tower includes a tower body 1 and various components inside and outside the tower body 1. The air inlet distribution device also distributes the gas within the tower body 1 to make it uniform.

[0058] like Figure 1 and Figure 2 As shown, the air intake distribution device includes multiple air intake pipes 4 disposed on the same side outside the tower body 1 and connected to the tower body 1, and two air intake pipes 4 are tangentially connected to two opposite tower walls 11 of the tower body 1, such that the gas entering from the air intake pipe 4 of one tower wall flows clockwise along the tower wall, and the gas entering from the air intake pipe 4 of the opposite tower wall flows counterclockwise along the tower wall.

[0059] Specifically, the tower body 1 is typically a large cylindrical container. In applications, for gas towers such as large-diameter distillation towers and absorption towers, a large gas intake volume is required. When the external gas generating equipment supplies gas to the inlet pipe 4, the gas flow velocity in the inlet pipe 4 is high. Therefore, multiple inlet pipes 4 can rationally distribute the high-speed gas. In this embodiment, there are two inlet pipes 4. During manufacturing, the diameter of the inlet pipe 4 can be designed according to the feed volume that the gas tower needs to process, so as to meet the gas intake requirements and adapt to the airflow velocity, achieving uniform gas distribution. The two inlet pipes 4 extend into the tower body 1 from the same side outside the tower body 1 and are connected to the tower body 1. It should be noted that "the same side" means that the distribution position of the two or more inlet pipes 4 on the tower body 1 generally does not exceed the arc area of ​​180 degrees of the tower body, so as to facilitate gas supply to all inlet pipes 4 on the same side. Two intake pipes 4 are tangentially connected to two opposite tower walls 11 of the tower body 1. Here, "tangential" means that the axial pipe wall lines 43 of the two intake pipes 4 on their outer sides form a generally tangential relationship with the tower wall 11 at the connection point, that is, the axial pipe wall lines 43 of the intake pipes intersect the tangential lines 110 of the tower wall at the connection point at a small angle. The connection points of the two intake pipes 4 on the tower wall 11 are the positions of the two opposite side walls of the tower wall 11.

[0060] In this structural design, the air intake distribution device uses multiple air intake pipes 4 to intake air, avoiding the concentration of high-speed gas entering the tower body 1 and dispersing the air intake flow, thus allowing for a smaller diameter for the air intake pipes 4. If there were only one air intake pipe 4, a very large diameter would be required to meet the large air intake demand, which would also be detrimental to gas distribution. Furthermore, a large diameter air intake pipe 4 would necessitate a larger tower body 1, indirectly increasing its manufacturing cost. Therefore, the distribution of multiple smaller-diameter air intake pipes 4 satisfies the large air intake requirements of large-diameter separation equipment while avoiding increasing the tower height, thus reducing the manufacturing cost of the tower body 1. Simultaneously, placing multiple air intake pipes 4 on the same side of the tower body 1 eliminates the need for air intake from multiple sides, allowing for a centralized arrangement of the supporting gas supply pipelines, reducing the footprint, and consequently reducing the size of the air intake distribution device, simplifying the structure, and saving manufacturing costs. Conversely, if there are air inlets on different sides of the tower body 1, multiple air inlet pipes 4 need to be arranged, which also places higher demands on the arrangement of the external air supply pipeline and increases the cost of external pipelines. In this embodiment, two of the air inlet pipes 4 are tangentially connected to two opposite tower walls 11 of the tower body 1, so that the incoming airflow flows from the two opposite tower walls 11 and flows towards each other along the annular inner wall of the tower body 1. On the one hand, the high-speed airflow flowing in from the air inlet pipes 4 is blocked by the annular inner wall and is buffered; on the other hand, the two opposing airflows merge and flow slowly towards the center of the tower body 1, thereby buffering the high-speed airflow entering the tower body 1 and distributing it evenly in the tower, thus achieving uniform gas distribution.

[0061] In other embodiments, the number of intake pipes 4 can be adjusted according to factors such as gas flow rate, the need for uniform distribution, and the selection of pipe diameter. For example, in Figure 1 Between the two larger diameter inlet pipes 4, two smaller diameter inlet pipes 4 are arranged to increase the air intake or adjust the gas distribution. Furthermore, considering the different diameters of the tower body 1 and the inlet pipes 4, the number of inlet pipes 4 tangentially connected to the tower body 1 between the two generally opposite tower walls 11 can also be more than two to adjust the uniform gas distribution.

[0062] Among them, such as Figure 1 As shown, the air intake distribution device also includes an air intake main pipe 2 and a distribution pipe 3 disposed outside the tower body 1. The air intake main pipe 2 is connected to the distribution pipe 3, and two air intake pipes 4 are connected to the distribution pipe 3 at intervals. In other embodiments, other air supply pipeline structures may also be used, but compared with other air supply distribution pipe 3 configurations, this embodiment achieves centralized distribution of gas through one air intake main pipe 2 and one distribution pipe 3, and then disperses the gas into the tower body 1, simplifying the external air supply pipeline.

[0063] Preferably, such as Figure 2 As shown, in this embodiment, the two air inlet pipes 4 tangentially connected to the tower body 1 are parallel to each other, and the two air inlet pipes 4 are tangentially connected to the two opposite tower walls 11 of the tower body 1, that is, the axial pipe wall line 43 of the air inlet pipe coincides with the tangential line 110 of the tower wall at the connection.

[0064] In other embodiments, the two air inlet pipes 4 may not be completely parallel, but as in this embodiment, the two air inlet pipes 4, which are tangentially connected to the tower body 1, are arranged parallel to each other. This facilitates the symmetrical flow of the two incoming air streams towards each other, making it easier to control the airflow velocity and flow rate, resulting in a more uniform gas distribution. In other embodiments, the two air inlet pipes 4 and the two opposite tower walls 11 of the tower body 1 may not be exactly tangential. However, in this embodiment, the two air inlet pipes 4 are tangentially connected to the two opposite tower walls 11 of the tower body 1, which is the preferred arrangement. This allows the airflow in the air inlet pipes 4 to flow more closely to the inner wall of the tower body 1, further improving the buffering effect and thus promoting a uniform gas distribution.

[0065] Among them, such as Figure 2As shown, the two air inlets 4 tangentially connected to the tower body 1 each include a first air inlet 41 and a second air inlet 42. Starting from the first air inlet 41 and the second air inlet 42, three baffles 5 are spaced apart along the airflow direction A of the gas entering the tower body 1. These are the first baffle 51, the second baffle 52, and the third baffle 53. Each baffle 5 starting from the first air inlet 41 corresponds to and is symmetrically arranged with respect to each baffle 5 starting from the second air inlet 42. Each baffle 5 protrudes from the inner wall and is positioned relative to the airflow direction, allowing some airflow to flow from the inner wall of the tower body towards the center of the tower body, gradually distributing within the inner cavity of the tower body 1. Each baffle 5 has a distribution hole 512 that penetrates the baffle 5 along the airflow direction A, allowing some airflow to pass through the distribution hole 512 and enter the rear side of the baffle 5 along the airflow direction A.

[0066] The spoiler 5, with its design, blocks the high-speed airflow from the intake pipe 4, thus guiding and buffering the gas flow. The spoiler 5 has flow distribution holes 512 positioned relative to the airflow direction, allowing the airflow to pass through and maintaining smooth airflow. Simultaneously, other parts of the spoiler 5 impede the gas flow velocity, creating a guiding effect.

[0067] Along the airflow direction A, the distance between two adjacent baffles 5 gradually increases; that is, starting with the first baffle 51, the distance between the second baffle 52 and the third baffle 53 and the previous baffle gradually increases. Furthermore, along the airflow direction A, the height of each baffle 5 protruding from the inner wall of the tower gradually increases. This arrangement accommodates the gradual decrease in gas velocity from the inlet to the inside of the tower, resulting in a slow and stable change in gas velocity, rather than a rapid abrupt change, which is beneficial for uniform gas distribution. The gradually increasing height of each baffle 5 protruding from the inner wall of the tower along the airflow direction A allows the reduced-velocity airflow to have a longer guiding distance under the action of the higher baffles, improving the guiding effect and thus contributing to uniform gas distribution.

[0068] Among them, such as Figure 1 As shown, and in combination Figures 3-5 As shown, along the airflow direction A, the number of flow distribution holes 512 on the spoiler 5 gradually increases. For example, the first spoiler 51 has one set of flow distribution holes 512, the second spoiler 52 has two sets of flow distribution holes 512, and the third spoiler 53 has three sets of flow distribution holes 512. Each set of flow distribution holes 512 on the spoiler 5 consists of two corresponding flow distribution holes 512. Furthermore, the flow distribution holes 512 of adjacent spoilers 5 are staggered in the airflow direction. For example, the two sets of flow distribution holes 512 on the second spoiler 52 and the one set of flow distribution holes 512 on the first spoiler 51 are not in the same airflow path direction, but are staggered.

[0069] Because the gas velocity gradually decreases and its fluidity gradually reduces along the airflow direction, the number of flow distribution holes 512 on the baffle 5 is gradually increased. This reduces the obstruction to the airflow at the end of airflow direction A, improving gas fluidity and thus promoting uniform gas distribution. Furthermore, the flow distribution holes 512 of adjacent baffles 5 are staggered in the airflow direction. This alters the gas flow direction upon entering the tower, reducing the high-speed gas region and providing better buffering for the gas. It also reduces the stress on the baffle 5, increasing its stability.

[0070] like Figure 1 As shown, and in combination Figures 3-5 As shown in this embodiment, the specific structure of the baffle 5 is as follows: each baffle 5 includes a guide plate 510 and a support plate 511. One end of the guide plate 510 and one end of the support plate 511 are welded to the inner wall of the tower body 1 at intervals, and the other end of the guide plate 510 and the other end of the support plate 511 are welded together. The guide plate 510 and the support plate 511 have oppositely arranged distribution holes 512 for the airflow to pass through in the forward direction. In this structure, the guide plate 510 and the support plate 511 form a mutually supporting structure, which is stable and can withstand the impact of high-speed airflow, thus enabling the baffle 5 to produce an effective guiding effect.

[0071] Both the guide vane 510 and the support plate 511 include a guide surface 513 relative to the airflow direction A. The guide area of ​​the guide surface 513 gradually decreases from the tower wall 11 of the tower body 1 to the tower center 12. Since the incoming airflow flows along the annular inner wall of the tower body 1 and gradually diffuses towards the center of the tower, the guide area is set in this way. Based on the above-mentioned mutual support structure, the guide vane 510 and the support plate 511 form a cone-shaped structure as a whole. This not only improves the structural stability but also adapts to the gradual decrease in gas velocity from the tower wall 11 to the tower center 12, resulting in a slow and stable change in gas velocity, which is beneficial to the uniform distribution of gas.

[0072] In other embodiments, other forms of flow guiding structures may also be used. When applying flow guiding structures, the configuration of the baffle 5 in this embodiment may also be adopted to better guide and buffer high-speed gas and achieve uniform gas distribution.

[0073] Figure 6This diagram illustrates the change in gas velocity as simulated gas flows through the inlet distribution device and tower body in this embodiment. The change in gas velocity is visually represented by color changes; red areas represent regions with higher airflow velocities, and blue areas represent regions with lower airflow velocities. As can be seen from the diagram, using the inlet distribution device of this embodiment, after the gas enters the tower body, its velocity decreases significantly due to the guiding effect of the various baffles, ultimately distributing throughout the entire inner cavity of the tower body.

[0074] Example 2

[0075] This embodiment provides a gas tower including an inlet distribution device as described in Embodiment 1. Such a gas tower can be used in chemical processes including distillation, absorption, and extraction. By using the inlet distribution device as described in Embodiment 1, this gas tower avoids the concentration of high-speed gas entering the tower body 1, dispersing the inlet flow rate. This satisfies the requirement for a large inlet volume, achieves uniform gas distribution, avoids increasing the tower height, and reduces the manufacturing cost of the tower body 1; it also reduces the size of the inlet distribution device and simplifies the structure.

[0076] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. An air intake distribution device for guiding airflow into a gas tower, characterized in that, The air intake distribution device includes multiple air intake pipes disposed on the same side of the gas tower body and connected to the tower body, and at least two of the air intake pipes are tangentially connected to two opposite tower walls of the tower body, so that gas entering from the air intake pipe of one tower wall flows clockwise along the tower wall, and gas entering from the air intake pipe of the opposite tower wall flows counterclockwise along the tower wall.

2. The air intake distribution device as described in claim 1, characterized in that, At least two of the air inlet pipes tangentially connected to the tower body are parallel to each other, and / or at least two of the air inlet pipes are tangentially connected to two opposite tower walls of the tower body.

3. The air intake distribution device as described in claim 1, characterized in that, At least two air inlet pipes tangentially connected to the tower body each include a first air inlet and a second air inlet. Starting from the first air inlet and the second air inlet, a plurality of baffles are spaced apart along the airflow direction of the gas entering the tower body. The baffles protrude from the inner wall and are configured to guide the corresponding airflow, so that part of the airflow flows from the inner wall toward the center of the tower body. The baffles are provided with flow distribution holes that penetrate the baffles along the airflow direction, so that part of the airflow passes through the flow distribution holes and enters the rear side of the baffle along the airflow direction.

4. The air intake distribution device as described in claim 3, characterized in that, Starting from the first air inlet and / or the second air inlet, there are three or more baffles spaced at intervals along the airflow direction of the gas entering the tower body, and the distance between two adjacent baffles gradually increases along the airflow direction. Along the airflow direction, the height of each of the baffles protruding from the inner wall of the tower gradually increases.

5. The air intake distribution device as described in claim 3, characterized in that, The spoiler includes a guide surface relative to the airflow direction, and the guide area of ​​the guide surface gradually decreases from the tower wall to the center of the tower.

6. The air intake distribution device as described in claim 3, characterized in that, Along the airflow direction, the number of flow distribution holes on each of the spoilers gradually increases, and the flow distribution holes of two adjacent spoilers are staggered in the airflow direction.

7. The air intake distribution device as described in claim 3, characterized in that, The baffle plate includes a guide plate and a support plate. One end of the guide plate and one end of the support plate are connected to the inner wall of the tower body at a distance, and the other end of the guide plate is connected to the other end of the support plate. The guide plate and the support plate are provided with distribution holes in the direction of the airflow to allow the airflow to pass through in the same direction.

8. The air intake distribution device as described in claim 7, characterized in that, The guide vane and / or the support plate have a guide surface that gradually decreases in size from the tower wall to the center of the tower relative to the airflow direction.

9. The air intake distribution device as described in claim 1, characterized in that, The air intake distribution device also includes an air intake main pipe disposed outside the tower body, and the air intake main pipe is connected to a plurality of air intake pipes.

10. A gas tower, characterized in that, The gas tower includes an air inlet distribution device as described in any one of claims 1-9.

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