A high pressure adsorption column with a multi-stage gas flow distribution structure

Abstract

The utility model discloses a high pressure adsorption tower with multistage airflow distribution structure, including adsorption tower body, along the horizontal direction is established, its one end is equipped with the air inlet, and the other end is equipped with the gas outlet, adsorbent bed layer is set up in the adsorption tower body, first gas distribution subassembly is set up between the air inlet and adsorbent bed layer for making waste gas diffusion into the adsorption tower body, second gas distribution subassembly is set up between first gas distribution subassembly and adsorbent bed layer for making waste gas even distribution, third gas distribution subassembly is set up between second gas distribution subassembly and adsorbent bed layer for making waste gas further even distribution, the utility model discloses can make waste gas even flow into the adsorption tower body, avoids the partial impact adsorbent layer of gas, prevents partial penetration.

Description

Technical Field

[0001] This utility model relates to the field of waste gas purification devices, and in particular to a high-pressure adsorption tower with a multi-stage airflow distribution structure. Background Technology

[0002] Activated carbon adsorption towers are the most effective purification equipment for treating organic waste gas and odors. Existing activated carbon adsorption towers are equipped with activated carbon adsorption layers, which adsorb and purify waste gas generated in industrial production, thereby meeting increasingly stringent air pollution emission standards.

[0003] When existing adsorption towers purify waste gas, high-pressure waste gas enters the tower through the inlet, is adsorbed by the activated carbon adsorption layer inside the tower, and is discharged from the outlet. However, existing adsorption towers only have a single inlet, and the high-pressure waste gas is directly jetted into the adsorption tower through the inlet, resulting in uneven airflow distribution. The gas only passes through the middle part of the activated carbon adsorption layer in some areas, causing the adsorption layer to be penetrated prematurely in some areas. Utility Model Content

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a high-pressure adsorption tower with a multi-stage airflow distribution structure, which can make the waste gas flow into the adsorption tower body evenly, avoid local gas impact on the adsorbent layer, and prevent local penetration.

[0005] This utility model provides a high-pressure adsorption tower with a multi-stage airflow distribution structure, comprising: The adsorption tower body is set horizontally, with an air inlet at one end and an air outlet at the other end. An adsorbent bed is disposed within the adsorption tower body and is used to adsorb and purify waste gas. A primary gas distribution assembly is disposed between the air inlet and the adsorbent bed to allow waste gas to diffuse into the adsorption tower body; A secondary gas distribution component is disposed between the primary gas distribution component and the adsorbent bed to ensure uniform distribution of exhaust gas. A third-stage gas distribution assembly is disposed between the second-stage gas distribution assembly and the adsorbent bed to further distribute the waste gas evenly.

[0006] Furthermore, the primary gas distribution assembly includes a conical diffuser, which is fixedly installed in the adsorption tower body via a connecting frame. Both ends of the conical diffuser are open structures, with the smaller end connected to the air inlet and the larger end facing the secondary gas distribution assembly.

[0007] Furthermore, the secondary gas distribution assembly includes a gas distribution pipe group, which includes multiple sets of annular pipes coaxially sleeved within the adsorption tower body. Adjacent sets of annular pipes are interconnected by connecting pipes. A baffle is fixedly installed between the gas distribution pipe group and the conical diffuser. Multiple sets of air inlet pipes are evenly arranged along the circumference of any annular pipe near the baffle. One end of the air inlet pipe is connected to the annular pipe, and the other end is transversely penetrating the baffle. Multiple sets of annular pipes are provided with several air outlet holes along the circumference of the side away from the baffle.

[0008] Furthermore, the three-stage gas distribution assembly includes a porous distribution plate fixedly installed inside the adsorption tower body, and the porous distribution plate has several through holes for the flow of waste gas.

[0009] Furthermore, the adsorbent bed includes an adsorption cylinder, which is fixedly sleeved within the adsorption tower body and has end caps fixedly installed at both ends. Activated carbon adsorbent is filled between the adsorption cylinder and the two sets of end caps, and several through holes for the flow of waste gas are opened on the end caps.

[0010] Furthermore, the adsorption cylinder is provided with a turbulence-inducing component, which includes multiple sets of air guides arranged sequentially along the horizontal air intake direction. Each air guide includes a first conical plate and a second conical plate that are coaxial and fixedly connected. The tip of the first conical plate faces towards the direction close to the air intake, and the tip of the second conical plate faces upward away from the air intake. Both the first and second conical plates have several through holes.

[0011] Compared with the prior art, the beneficial effects of this utility model are: (1) In this utility model, a first-stage gas distribution component, a second-stage gas distribution component, and a third-stage gas distribution component are sequentially arranged between the air inlet of the adsorption tower body and the adsorbent bed. The first-stage gas distribution component can diffuse the waste gas into the adsorption tower body, thereby changing the flow direction of the waste gas. At the same time, the diffusion method can reduce the pressure of the gas and avoid excessive impact on the adsorbent bed. The second-stage and third-stage gas distribution components can distribute the waste gas evenly and avoid the waste gas passing through the adsorbent bed locally. By setting up multi-stage gas distribution components, this application can make the waste gas enter the adsorption tower body evenly and avoid the waste gas entering directly in the form of a high-pressure jet, thereby avoiding the waste gas impacting the middle position of the adsorbent bed locally and avoiding the local penetration of the adsorbent bed due to local impact. Moreover, the waste gas enters the adsorption tower body evenly and can fully contact the middle and edge positions of the adsorbent bed, which can maximize the utilization of all adsorbents, improve the utilization rate of adsorbents, and improve the waste gas purification effect. (2) The present invention is provided with a turbulence mechanism in the adsorbent bed. The turbulence mechanism includes multiple sets of air guides arranged sequentially along the horizontal air inlet direction. The air guides include a first conical plate and a second conical plate fixedly connected, so that multiple sets of first conical plates and multiple sets of second conical plates are alternately arranged. After the waste gas enters the adsorbent bed, it is guided by the first conical plate. Most of the waste gas is guided to the inner wall area of ​​the adsorption tower body. Then, the waste gas encounters the second conical plate, and most of the gas is guided to the middle area of ​​the adsorption cylinder body. Thus, through the periodic guidance of "edge-middle-edge-middle", the waste gas flows in a tortuous path, avoiding the waste gas from passing directly through the adsorbent bed in a straight line, prolonging the contact time between the waste gas and the adsorbent bed, and improving the purification effect of the waste gas.

[0012] It should be understood that the description in this utility model description section is not intended to limit the key or essential features of the embodiments of this utility model, nor is it intended to restrict the scope of this utility model. Other features of this utility model will become readily apparent from the following description. Attached Figure Description

[0013] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of one side of the gas distribution pipe assembly. Figure 3 This is a schematic diagram of the other side structure of the air distribution pipe assembly; Figure 4 This is a side sectional view of the air distribution pipe assembly; Figure 5 This is a schematic diagram of the adsorption cylinder, end cap, and turbulence mechanism. The diagram labels are as follows: 1. Adsorption tower body; 2. Adsorbent bed; 3. Primary gas distribution assembly; 4. Secondary gas distribution assembly; 5. Tertiary gas distribution assembly; 6. Turbulence assembly; 11. Air inlet; 12. Air outlet; 21. Adsorption cylinder; 22. End cap; 23. Activated carbon adsorbent; 31. Conical diffuser; 32. Connecting frame; 41. Annular pipe; 42. Connecting pipe; 43. Baffle; 44. Intake pipe; 51. Distribution plate; 61. Air guide components; 411. Vent; 611. First conical plate; 612. Second conical plate. Detailed Implementation

[0014] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0015] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0016] Please refer to Figures 1-5 An embodiment of this utility model provides a high-pressure adsorption tower with a multi-stage airflow distribution structure, comprising: The adsorption tower body 1 is arranged in a horizontal direction, with an air inlet 11 at one end and an air outlet 12 at the other end. The adsorbent bed 2 is set inside the adsorption tower body 1 and is used to adsorb and purify the waste gas. The primary gas distribution component 3 is located between the air inlet 11 and the adsorbent bed 2, and is used to diffuse the waste gas into the adsorption tower body 1. The secondary gas distribution component 4 is located between the primary gas distribution component 3 and the adsorbent bed 2 to ensure uniform distribution of exhaust gas. The third-stage gas distribution component 5 is located between the second-stage gas distribution component 4 and the adsorbent bed 2 to further distribute the waste gas evenly.

[0017] In this embodiment, the air inlet 11 is connected to an external waste gas delivery pipeline. The delivery pipeline delivers high-pressure waste gas into the adsorption tower body 1. The waste gas passes through the first-stage gas distribution assembly 31, the second-stage gas distribution assembly 32, and the third-stage gas distribution assembly 33 in sequence. The first-stage gas distribution assembly 31 can diffuse the waste gas into the adsorption cylinder body 1. The diffusion process can change the direction of the waste gas flow, directing the waste gas flow towards the inner wall area of ​​the adsorption cylinder body. At the same time, the diffusion method can reduce the pressure of the gas, preventing the waste gas from entering the interior of the adsorption cylinder body 1 in the form of a high-pressure jet, thus avoiding excessive impact on the adsorbent bed. The second-stage gas distribution assembly 4 and the third-stage gas distribution assembly 5 can distribute the waste gas evenly, preventing the waste gas from passing through the adsorbent bed 2 locally. The air outlet 12 is connected to the exhaust pipe. After passing through the multi-stage gas distribution structure, the waste gas is discharged into the clean flue through the air outlet 12 and then into the chimney for discharge. This application, by setting up a multi-stage gas distribution assembly, enables the exhaust gas to enter the adsorption tower body 1 evenly, avoiding the exhaust gas from entering directly in the form of a high-pressure jet. This prevents the exhaust gas from locally impacting the middle position of the adsorbent bed 2 and from partially penetrating the adsorbent bed 2 due to local impact. Furthermore, the even entry of the exhaust gas into the adsorption tower body 1 allows for full contact with the middle and edge positions of the adsorbent bed 2, maximizing the utilization of all adsorbents, improving the utilization rate of the adsorbent, and enhancing the exhaust gas purification effect.

[0018] In a preferred embodiment, such as Figure 1 As shown, the primary gas distribution assembly 3 includes a conical diffuser 31, which is fixedly installed inside the adsorption tower body 1 by a connecting frame 32. Both ends of the conical diffuser 31 are open structures, with the small end of the conical diffuser 31 connected to the air inlet and the large end facing the secondary gas distribution assembly 4.

[0019] In this embodiment, multiple connecting frames are evenly arranged along the circumference of the outer wall of the conical diffuser 31. The connecting frames are fixedly connected to the inner wall of the adsorption tower body 1 and the outer wall of the conical diffuser 31 by bolts or welding, thereby achieving the fixed installation of the conical diffuser 31. During adsorption purification, the waste gas flows into the conical diffuser 31 through the air inlet 11. The waste gas changes its flow direction by being guided by the inner wall of the conical diffuser 31. In addition, the gas diffusion has a pressure reduction effect, preventing the waste gas from locally impacting the adsorbent bed 2 in a jet manner.

[0020] In a preferred embodiment, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the secondary gas distribution assembly 4 includes a gas distribution pipe group, which includes multiple sets of annular pipes 41 coaxially sleeved within the adsorption tower body 1. Adjacent sets of annular pipes 41 are interconnected by connecting pipes 42. A baffle 43 is fixedly installed between the gas distribution pipe group and the conical diffuser 31. Multiple sets of air inlet pipes 44 are evenly arranged along the circumference of any annular pipe 41 near the baffle 43. One end of the air inlet pipe 44 is connected to the annular pipe 41, and the other end is connected to the transversely penetrating baffle 43. Several air outlet holes 411 are opened along the circumference of the side of the multiple sets of annular pipes 41 away from the baffle 43.

[0021] In this embodiment, the baffle 43 is a circular plate structure, and the outer edge of the baffle 43 is attached to the inner wall of the adsorption tower body 1 and fixedly connected by welding to block the exhaust gas passing through the conical diffuser 31 and allow the exhaust gas to enter the gas distribution pipe group. The exhaust gas flows into the annular pipe 41 connected to the inlet pipe 44, and adjacent annular pipes 41 are connected by connecting pipes 42, so that the exhaust gas flows into multiple sets of annular pipes 41. The annular pipe 41 has an outlet hole 411 on the side near the adsorbent bed 2. The outlet hole 411 is a micro-pore arranged in a circle. An outlet pipe is installed at the micro-pore. The exhaust gas is evenly distributed through the outlet hole 411 and the outlet pipe, which improves the uniformity of gas distribution and avoids the exhaust gas from impacting the adsorbent bed 2 locally.

[0022] In a preferred embodiment, such as Figure 1 As shown, the three-stage gas distribution assembly 5 includes a porous distribution plate 51 fixedly installed inside the adsorption tower body 1, and the porous distribution plate 51 is uniformly provided with a number of through holes for the flow of waste gas.

[0023] In this embodiment, the porous distribution plate 51 is a circular plate structure and is fixed inside the adsorption tower body 1. Several through holes are evenly opened on it. The several through holes can be arranged according to the rule of equilateral triangles and cover the entire porous distribution plate 51. The exhaust gas discharged from the gas distribution pipe group flows evenly to the porous distribution plate 51. The exhaust gas can flow at approximately the same speed through the through holes on the porous distribution plate 51, thereby making the gas evenly distributed and flowing to the adsorbent bed 2; further improving the uniformity of exhaust gas distribution.

[0024] In a preferred embodiment, such as Figure 1 and Figure 5 As shown, the adsorbent bed 2 includes an adsorption cylinder 21, which is fixedly sleeved inside the adsorption tower body 1, and has end caps 22 fixedly installed at both ends. Activated carbon adsorbent 23 is filled between the adsorption cylinder 21 and the two sets of end caps 22, and several through holes for the flow of waste gas are opened on the end caps 22.

[0025] In this embodiment, the adsorption cylinder 21 can be fixedly installed inside the adsorption cylinder body 1 by means of flange connection, and the end cap 22 is fixedly installed at both ends of the adsorption cylinder 21. The diameter of the through hole 2 on the end cap 22 is smaller than the particle diameter of the activated carbon adsorbent 23, which serves to allow gas to flow and prevent the adsorbent particles from spilling. The waste gas is adsorbed and purified by the activated carbon adsorbent.

[0026] In a preferred embodiment, such as Figure 1 and Figure 5 As shown, the adsorption cylinder 21 is provided with a turbulence assembly 6. The turbulence assembly 6 includes multiple sets of air guides 61 arranged sequentially along the horizontal air intake direction. Each air guide 61 includes a first conical plate 611 and a second conical plate 612 that are coaxial and fixedly connected. The tip of the first conical plate 611 faces the direction close to the air inlet 11, and the tip of the second conical plate 612 faces the direction upward away from the air inlet 11. Several through holes are provided on both the first conical plate 611 and the second conical plate 612.

[0027] In this embodiment, activated carbon adsorbent particles are filled between the first conical plate 611 and the adjacent second conical plate 612, and the diameter of the through holes 3 opened on the first conical plate 611 and the second conical plate 612 is also smaller than the diameter of the activated carbon adsorbent particles. The through holes 3 serve to allow gas to flow. Multiple sets of first conical plates 611 and multiple sets of second conical plates 612 are alternately arranged. After the waste gas enters the adsorbent bed 2, it is guided by the first conical plate 611, and most of the waste gas is directed to the inner wall area of ​​the adsorption tower body 1. Then, when the waste gas encounters the second conical plate 612, most of the gas is directed to the middle area of ​​the adsorption cylinder body 1. Thus, through the periodic guidance of "edge-middle-edge-middle", the waste gas flows in a tortuous path, avoiding the waste gas from passing directly through the adsorbent bed 2 in a straight line, prolonging the contact time between the waste gas and the adsorbent bed 2, and improving the purification effect of the waste gas.

[0028] In the description of this specification, the terms "connection," "installation," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0029] In the description of this specification, the terms "one embodiment," "some embodiments," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0030] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A high-pressure adsorption tower with a multi-stage airflow distribution structure, characterized in that, include: The adsorption tower body is set horizontally, with an air inlet at one end and an air outlet at the other end. An adsorbent bed is disposed within the adsorption tower body and is used to adsorb and purify waste gas. A primary gas distribution assembly is disposed between the air inlet and the adsorbent bed to allow waste gas to diffuse into the adsorption tower body; A secondary gas distribution component is disposed between the primary gas distribution component and the adsorbent bed to ensure uniform distribution of exhaust gas. A third-stage gas distribution assembly is disposed between the second-stage gas distribution assembly and the adsorbent bed to further distribute the waste gas evenly.

2. The high-pressure adsorption tower with a multi-stage airflow distribution structure according to claim 1, characterized in that, The primary gas distribution assembly includes a conical diffuser, which is fixedly installed in the adsorption tower body via a connecting frame. Both ends of the conical diffuser are open structures, with the smaller end connected to the air inlet and the larger end facing the secondary gas distribution assembly.

3. A high-pressure adsorption tower with a multi-stage airflow distribution structure according to claim 2, characterized in that, The secondary gas distribution assembly includes a gas distribution pipe group, which includes multiple sets of annular pipes coaxially sleeved within the adsorption tower body. Adjacent sets of annular pipes are interconnected by connecting pipes. A baffle is fixedly installed between the gas distribution pipe group and the conical diffuser. Multiple sets of air inlet pipes are evenly arranged along the circumference of any annular pipe near the baffle. One end of the air inlet pipe is connected to the annular pipe, and the other end is transversely penetrating the baffle. Multiple air outlet holes are opened along the circumference of the side of the multiple sets of annular pipes away from the baffle.

4. A high-pressure adsorption tower with a multi-stage airflow distribution structure according to claim 3, characterized in that, The three-stage gas distribution assembly includes a porous distribution plate fixedly installed inside the adsorption tower body, and the porous distribution plate has several through holes for the flow of waste gas.

5. A high-pressure adsorption tower with a multi-stage airflow distribution structure according to claim 1, characterized in that, The adsorbent bed includes an adsorption cylinder, which is fixedly sleeved inside the adsorption tower body and has end caps fixedly installed at both ends. Activated carbon adsorbent is filled between the adsorption cylinder and the two sets of end caps. Several through holes for the flow of waste gas are opened on the end caps.

6. A high-pressure adsorption tower with a multi-stage airflow distribution structure according to claim 5, characterized in that, The adsorption cylinder is equipped with a turbulence-inducing component, which includes multiple sets of air guides arranged sequentially along the horizontal air intake direction. Each air guide includes a first conical plate and a second conical plate that are coaxial and fixedly connected. The tip of the first conical plate faces towards the air intake, and the tip of the second conical plate faces upward away from the air intake. Both the first and second conical plates have several through holes.

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