Drying tower and gas drying system

Abstract

The embodiment of the utility model provides a drying tower and a gas drying system. The drying tower comprises a tower body provided with an inner cavity, and a first gas transmission interface and a second gas transmission interface which are communicated with the inner cavity; the first diffusion device is arranged in the inner cavity, the first diffusion device comprises a gas conveying pipeline and at least one diffusion component with a perforation structure, one end of the gas conveying pipeline is connected with the first gas conveying connector, and the other end of the gas conveying pipeline extends to the position close to the second gas conveying connector; and at least part of the at least one diffusion component is connected with the other end of the gas pipeline. The drying tower has a better regeneration effect and lower production cost, the heat loss of regenerated gas is less, and the energy consumption is favorably reduced.

Description

Technical Field

[0001] Example embodiments of the present application generally relate to the field of gas drying technology, and in particular to a drying tower and a gas drying system. Background Art

[0002] Adsorption dryers typically use an adsorbent to absorb moisture from the air to dry it. They typically have two drying towers: one for moisture adsorption and the other for adsorbent regeneration, with the two switching regularly. The regeneration process in traditional adsorption dryers typically involves passing high-temperature gas into the drying tower from the top, regenerating the desiccant from top to bottom, and then discharging it from the bottom. This results in lower regeneration efficiency for the adsorbent in the lower middle portion of the drying tower, impacting the adsorption performance of subsequent drying tower switching operations. Utility Model Content

[0003] The purpose of the present application is to provide a drying tower and a gas drying system to solve or at least partially solve the above-mentioned problems and / or other potential problems existing in traditional drying towers.

[0004] In a first aspect, the present application provides a drying tower. The drying tower comprises: a tower body having an inner cavity, and a first gas interface and a second gas interface communicating with the inner cavity; and a first diffuser disposed within the inner cavity, the first diffuser comprising a gas pipeline and at least one diffuser component having a perforated structure, wherein one end of the gas pipeline is connected to the first gas interface, the other end of the gas pipeline extends toward a position proximate to the second gas interface, and at least some of the at least one diffuser component is connected to the other end of the gas pipeline.

[0005] In some embodiments, the at least one diffusion component includes a plurality of diffusion components, the plurality of diffusion components are respectively arranged at different positions of the inner cavity, and the plurality of diffusion components are connected by gas pipelines.

[0006] In some embodiments, the first gas transmission interface and the second gas transmission interface are respectively located at two ends of the tower body in the axial direction, and the plurality of diffusion components are arranged along the axis of the tower body.

[0007] In some embodiments, the at least one diffusion component includes a first diffusion component close to the second gas transmission interface, and the first diffusion component is connected to the other end of the gas transmission pipeline.

[0008] In some embodiments, the first diffusion component includes a first tubular structure and a first end cover. The wall of the first tubular structure has a perforated structure. One end of the first tubular structure is connected to the other end of the gas pipeline. The first end cover seals the other end of the first tubular structure.

[0009] In some embodiments, the at least one diffusion component further includes a second diffusion component, and one end of the gas pipeline is connected to the first gas interface through the second diffusion component.

[0010] In some embodiments, the second diffusion component includes a second cylindrical structure, the cylindrical wall of the second cylindrical structure has a perforated structure, one end of the second cylindrical structure is connected to the first gas interface, and the other end of the second cylindrical structure is connected to the gas pipeline.

[0011] In some embodiments, a check valve is provided in the gas pipeline, and the check valve is used to limit the gas in the gas pipeline from flowing out through the first gas interface.

[0012] In some embodiments, a second diffusion device connected to the second gas transmission interface is further provided in the inner cavity.

[0013] The second aspect of the present application provides a gas drying system, comprising multiple drying towers as described above, and a first pipeline system and a second pipeline system, the first pipeline system being connected to the first gas transmission interfaces of the multiple drying towers respectively, and the second pipeline system being connected to the second gas transmission interfaces of the multiple drying towers respectively.

[0014] In some embodiments, the first pipeline system includes a heater, an outlet main pipeline, a plurality of outlet pipelines corresponding to a plurality of drying towers, and a plurality of regeneration gas pipelines corresponding to a plurality of drying towers; the air inlet ends of the plurality of outlet pipelines are respectively connected to the first gas transmission interfaces of the plurality of drying towers, and the air outlet ends of the plurality of outlet pipelines are connected to the outlet main pipeline; and the air inlet of the heater is connected to the outlet main pipeline, and the air outlet of the heater is respectively connected to the first gas transmission interfaces of the plurality of drying towers through a plurality of regeneration gas pipelines.

[0015] In some embodiments, a check valve is provided on the gas outlet pipe and the regeneration gas pipe respectively.

[0016] In some embodiments, the second pipeline system includes an air intake main pipeline, multiple air intake pipelines corresponding to multiple drying towers, and multiple exhaust pipelines corresponding to multiple drying towers; the air intake ends of the multiple air intake pipelines are connected to the air intake main pipeline, the air outlet ends of the multiple air intake pipelines are respectively connected to the second gas transmission interfaces of the multiple drying towers, and the air intake ends of the multiple exhaust pipelines are respectively connected to the second gas transmission interfaces of the multiple drying towers.

[0017] In some embodiments, the second pipe system further includes a muffler connected to the gas outlet ends of the plurality of exhaust pipes.

[0018] In some embodiments, control valves are respectively provided on the air intake pipe and the exhaust pipe.

[0019] The drying tower of the embodiment of the present application, on the one hand, can form a better regeneration effect for the adsorbent with a relatively high water content near the second gas interface, which is beneficial to prolonging the service life of the adsorbent and ensuring the adsorption effect of the adsorption link. On the other hand, since the first diffusion device is arranged inside the tower body, the first gas interface and / or the second gas interface can be reused for the first diffusion device, and there is no need to set a mounting hole or sealing structure dedicated to the first diffusion device in the tower body, which is beneficial to simplifying the production and processing process of the drying tower, and further beneficial to reducing production costs. Moreover, since the gas pipeline is arranged inside the tower body, the heat loss of the regenerated gas can be reduced, which is beneficial to improving the regeneration effect and reducing energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and other features, advantages and aspects of the embodiments of the present application will become more apparent with reference to the following detailed description in conjunction with the accompanying drawings. In the accompanying drawings, the same or similar reference numerals represent the same or similar elements, wherein:

[0021] Figure 1 shows a schematic structural diagram of a drying tower according to some embodiments of the present application; and

[0022] Figure 2 A piping schematic diagram of a gas drying system according to some embodiments of the present application is shown.

[0023] Description of reference numerals:

[0024] 100 - Drying tower; 110 - Tower body; 111 - Inner cavity; 112 - First gas interface; 113 - Second gas interface; 120 - First diffuser; 121 - Diffuser component; 122 - First diffuser component; 123 - Second diffuser component; 124 - Gas pipeline; 125 - Check valve; 126 - Retaining ring; 127 - First end cap; 128 - First cylindrical structure; 130 - Second diffuser; 131 - Third diffuser component;

[0025] 200 - first piping system; 201 - heater; 202 - main gas outlet pipe; 203 - gas outlet pipe; 204 - regeneration gas pipe; 205, 206 - check valves; 207 - throttle valve;

[0026] 300 - Second piping system; 301 - Intake main pipe; 302 - Intake pipe; 303 - Exhaust pipe; 304 - Muffler; 305, 306 - Control valves. DETAILED DESCRIPTION

[0027] The preferred embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments set forth herein. Instead, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0028] As used herein, the term "including" and its variations represent open inclusion, i.e., "including but not limited to." Unless otherwise stated, the term "or" means "and / or." The term "based on" means "based at least in part on." The terms "one example embodiment" and "an embodiment" mean "at least one example embodiment." The term "another embodiment" means "at least one additional embodiment." The terms "first," "second," etc. may refer to different or identical objects.

[0029] The embodiment of the present application provides a drying tower 100, Figure 1 A schematic structural diagram of a drying tower 100 according to some embodiments of the present application is shown. Figure 1 As shown, the drying tower 100 of the embodiment of the present application includes a tower body 110 and a first diffusion device 120 .

[0030] The tower body 110 has an inner cavity 111, and a first gas interface 112 and a second gas interface 113 connected to the inner cavity 111. In actual application, the inner cavity 111 is used to accommodate an adsorbent, which adsorbs moisture in the gas to be dried to achieve the purpose of drying the gas. The adsorbent can be placed in the inner cavity 111 in any appropriate manner. For example, a filter element structure can be provided in the inner cavity 111, and an adsorbent can be provided in the filter element structure. In the adsorption link, the gas to be dried can flow into the inner cavity 111 through the second gas interface 113, and the dried gas can be discharged through the first gas interface 112. In the regeneration link, the regenerated gas (for example, high-temperature dried gas) can be discharged from the dry gas discharged from the first gas interface 112, and a part of it can be heated and flowed into the inner cavity 111 to heat and dehydrate the adsorbent, and the wet gas carrying water can be discharged through the second gas interface 113.

[0031] Alternatively or additionally, the tower body 110 may include a hollow cylindrical structure. The two end surfaces of the hollow cylindrical structure may be flat, curved or conical. For example, Figure 1 As shown, the tower body 110 can be a hollow cylindrical structure with curved end surfaces. Of course, the structure of the tower body 110 is only exemplary. In actual application, the tower body 110 can be constructed in any appropriate shape. This application is not limited in this respect.

[0032] The first gas supply interface 112 and the second gas supply interface 113 can be arranged at any appropriate position of the tower body 110. It is understood that in order to extend the length of the flow path of the gas to be dried, the first gas supply interface 112 and the second gas supply interface 113 can be respectively arranged at both ends of the length direction of the tower body 110. For example, Figure 1 As shown, when the tower body 110 is a hollow cylindrical structure, the length direction of the tower body 110 can be the axial direction of the tower body 110. The first gas interface 112 and the second gas interface 113 can be respectively arranged at both ends of the tower body 110 in the axial direction. Of course, the above-mentioned arrangement positions of the first gas interface 112 and the second gas interface 113 are exemplary, and the first gas interface 112 and the second gas interface 113 can be arranged at any position of the tower body 110 according to actual needs.

[0033] The first diffuser 120 is disposed in the inner cavity 111 and includes a gas pipeline 124 and at least one diffuser component 121 having a perforated structure. One end of the gas pipeline 124 is connected to the first gas interface 112, and the other end of the gas pipeline 124 extends to a position close to the second gas interface 113. At least some of the at least one diffuser component 121 are connected to the other end of the gas pipeline 124. The diffuser component 121 herein refers to a component having a perforated structure and capable of diffusing the regeneration gas in the gas pipeline 124 into the inner cavity 111. The perforated structure can be formed by meshes of a mesh structure or by through-holes extending through the diffuser component 121. Alternatively or additionally, the first diffuser 120 can include one diffuser component 121 or multiple diffuser components 121, and correspondingly, the first diffuser 120 can include one gas pipeline 124 or multiple gas pipelines 124.

[0034] It should be noted that the other end of the gas pipeline 124 extends to a position close to the second gas interface 113, with the position of the first gas interface 112 as a reference. That is, compared to the first gas interface 112, the other end of the gas pipeline 124 is located closer to the second gas interface 113. For example, the first gas interface 112 and the second gas interface 113 can be located at the two ends of the tower body 110 in the axial direction, respectively. The other end of the gas pipeline 124 can be located between the first gas interface 112 and the middle of the tower body 110 in the axial direction, or can be located in the middle of the tower body 110 in the axial direction, or can be located between the middle of the tower body 110 in the axial direction and the second gas interface 113.

[0035] During the regeneration phase, regeneration gas can be delivered to the gas pipeline 124 through the first gas interface 112. This regeneration gas can be delivered directly to a location near the second gas interface 113 via the gas pipeline 124 without coming into contact with adsorbent in other areas, where it can diffuse into the inner cavity 111 through the diffusion device. This portion of regeneration gas has a relatively low moisture content and a relatively high temperature, effectively regenerating the adsorbent near the second gas interface 113. The gas then flows upward from bottom to top, completely regenerating the adsorbent throughout the inner cavity 111, ultimately exiting the tower body 110 through the second gas interface 113.

[0036] The drying tower 100 of the embodiment of the present application, on the one hand, can achieve a better regeneration effect for the adsorbent with a relatively high water content near the second gas transmission interface 113, which is beneficial for extending the service life of the adsorbent and ensuring the adsorption effect of the adsorption process. On the other hand, because the first diffusion device 120 is disposed within the tower body 110, the opening structure of the tower body 110 can be reduced, simplifying the production and processing of the drying tower 100, thereby helping to reduce production costs. Moreover, because the gas transmission pipeline 124 is disposed within the tower body 110, it can reduce the heat loss of the regeneration gas, allowing the regeneration gas to maintain a relatively high temperature, thereby improving the regeneration effect and reducing energy consumption.

[0037] In some embodiments, the at least one diffusion component 121 may include multiple diffusion components 121, each of which is arranged at different positions of the inner cavity 111. The multiple diffusion components 121 are connected by a gas pipeline 124. In this way, during the regeneration process, the regeneration gas can be diffused to different positions of the inner cavity 111, ensuring that a good regeneration effect can be achieved for the adsorbent at different positions in the inner cavity 111.

[0038] Alternatively or additionally, a plurality of diffusion components 121 may be arranged along the axial direction of the tower body 110. For example, Figure 1 As shown, the tower body 110 can be a hollow cylindrical structure, and a plurality of diffusion components 121 can be arranged in sequence along the axis of the tower body 110. Adjacent diffusion components 121 can be connected by gas pipelines 124. Of course, the arrangement of the diffusion components 121 described above is only exemplary, and in actual applications, any appropriate arrangement can be selected according to actual needs.

[0039] In some embodiments, Figure 1As shown, the at least one diffuser component 121 includes a first diffuser component 122 near the second gas interface 113. One end of a gas pipeline 124 is connected to the first gas interface 112, and the other end of the gas pipeline 124 extends to a position near the second gas interface 113. The first diffuser component 122 is connected to the other end of the gas pipeline 124. In this way, the regeneration gas can be directly delivered to a position near the second gas interface 113 without flowing through adsorbent in other areas, heating and regenerating the adsorbent near the second gas interface 113, thereby achieving a better regeneration effect on the adsorbent near the second interface.

[0040] In some embodiments, the first diffuser 122 includes a first cylindrical structure 128 and a first end cap 127. The wall of the first cylindrical structure 128 has a perforated structure. One end of the first cylindrical structure 128 is connected to the other end of the gas pipeline 124, and the first end cap 127 seals the other end of the first cylindrical structure 128. This allows the regeneration gas to diffuse evenly into the inner cavity 111 through the perforated structure, achieving a better regeneration effect.

[0041] In some embodiments, Figure 1 As shown, the at least one diffuser component 121 further includes a second diffuser component 123, and one end of the gas pipeline 124 is connected to the first gas interface 112 via the second diffuser component 123. During the regeneration process, the regeneration gas can be diffused to a location close to the first gas interface 112 via the second diffuser component 123, and the regeneration gas can be diffused to a location close to the second gas interface 113 via the first diffuser component 122, so that the adsorbent in the entire tower body 110 can achieve a good regeneration effect.

[0042] In some embodiments, the second diffusion component 123 includes a second cylindrical structure, the cylindrical wall of the second cylindrical structure has a perforated structure, one end of the second cylindrical structure is connected to the first gas interface 112, and the other end of the second cylindrical structure is connected to the gas pipeline 124. For example, Figure 1 As shown, the first gas interface 112 may be provided with an annular connector 126, one end of the second cylindrical structure may be connected to the annular connector 126 via a threaded structure, and the other end of the second cylindrical structure may be connected to the gas pipeline 124 via a threaded structure. This is conducive to simplifying the connection structure and the production process.

[0043] In some embodiments, Figure 1As shown, a check valve is provided in the gas pipeline 124, and the check valve is used to limit the gas in the gas pipeline 124 from flowing out through the first gas interface 112. In this way, it can be avoided that the gas in the adsorption process does not flow through the internal adsorbent to complete the adsorbent regeneration in the dryer directly into the first gas interface 112 through the gas pipeline 124, thereby ensuring the drying effect of the adsorption process. Alternatively or additionally, when the first diffusion device 120 includes one gas pipeline 124, the check valve can be provided in the gas pipeline 124. When the first diffusion device 120 includes multiple gas pipelines 124, the check valve can be provided in the gas pipeline 124 connected to the first gas interface 112 among the multiple gas pipelines 124, or a check valve can be provided in each gas pipeline 124 respectively.

[0044] In some embodiments, the inner cavity 111 is further provided with a second diffusion device 130 connected to the second gas interface 113. In this way, the wet gas is discharged in the regeneration stage. In the adsorption stage, the gas to be dried can be evenly diffused into the inner cavity 111 by the second diffusion device 130 to form a better drying effect. Alternatively or additionally, the second diffusion device 130 may include a third diffusion component 131 with a perforated structure, and the third diffusion component 131 may include a third cylindrical structure and a second end cover, and the cylindrical wall of the third cylindrical structure may be provided with a perforated structure. One end of the third cylindrical structure can be connected to the second gas interface 113, and the second end cover can seal the other end of the third cylindrical structure. Of course, the above-mentioned third diffusion component 131 is only exemplary. In actual application, the third diffusion component 131 can be constructed into any shape and structure.

[0045] The present application also provides a gas drying system. Figure 2 A schematic diagram of a gas drying system according to some embodiments of the present application is shown. Figure 2 As shown, the gas drying system of an embodiment of the present application includes multiple drying towers 100 as described in any of the above embodiments, as well as a first piping system 200 and a second piping system 300. The first piping system 200 is connected to the first gas transmission interfaces 112 of each of the drying towers 100, and the second piping system 300 is connected to the second gas transmission interfaces 113 of each of the drying towers 100. Because the drying towers 100 have good regeneration performance, low production costs, and low energy consumption, a gas drying system using the drying towers 100 also has the aforementioned advantages.

[0046] During actual operation, some of the drying towers 100 are in the adsorption state, while others are in the regeneration state. The gas to be dried can be delivered to the drying towers 100 in the adsorption state via the second piping system 300, and the dried gas can be discharged via the first piping system 200. Regeneration gas can also be delivered to the drying towers 100 in the regeneration state via the first piping system 200, and the wet gas, which has absorbed moisture, can be discharged via the second piping system 300. This wet gas can be discharged into the environment or mixed with the gas to be dried before being delivered to the drying towers 110 in the adsorption state.

[0047] For example, Figure 2 As shown, the gas drying system may include two drying towers 100. During actual operation, one drying tower 100 may be in the adsorption state and the other drying tower 100 may be in the regeneration state. In this case, the gas to be dried is transported to the drying tower 100 in the adsorption state through the second pipeline system 300, and the dried gas is discharged through the first pipeline system 200. At the same time, a portion of the dried gas is heated through the first pipeline system 200, and the high-temperature dry regeneration gas is transported to the drying tower 100 in the regeneration state. The adsorbent in the drying tower 100 is heated and dehydrated, and the resulting wet gas can be discharged through the second pipeline system 300; or it can be cooled and separated from the water, and then mixed with the gas to be dried and transported to the drying tower 100 in the adsorption state.

[0048] In some embodiments, the first piping system 200 includes a heater 201, a gas outlet main pipe 202, multiple gas outlet pipes 203 corresponding to the multiple drying towers 100, and multiple regeneration gas pipes 204 corresponding to the multiple drying towers 100. The inlet ends of the multiple gas outlet pipes 203 are respectively connected to the first gas supply ports 112 of the multiple drying towers 100, and the outlet ends of the multiple gas outlet pipes 203 are connected to the gas outlet main pipe 202. The inlet of the heater 201 is connected to the gas outlet main pipe 202, and the outlet of the heater 201 is respectively connected to the first gas supply ports 112 of the multiple drying towers 100 via the regeneration gas pipes 204. In this way, the drying towers 100 in the adsorption state can discharge dry gas through the gas outlet pipes 203 to the gas outlet main pipe 202. Some of the dry gas in the gas outlet main pipe 202 can be transported to the heater 201, where it is heated and then transported to the drying towers 100 in the regeneration state via the regeneration gas pipes 204.

[0049] Alternatively or additionally, each outlet pipe 203 may be provided with a check valve 205 to prevent the drying gas from flowing back into the drying tower 100 in the adsorption state. Alternatively or additionally, each regeneration gas pipe 204 may be provided with a check valve 206 to prevent the drying gas from flowing back into the heater 201. This ensures stable operation of the first piping system 200. Alternatively or additionally, a throttle valve 207 may be provided between the heater 201 and the main outlet pipe 202 to regulate the flow of the regeneration gas. It should be understood that the aforementioned valves in the first piping system 200 are merely exemplary and should not be construed as limiting the first piping system 200 to only include the valves shown above. In actual applications, various valves may be arranged in the first piping system 200 as needed.

[0050] In some embodiments, the second piping system 300 may include a main air intake pipe 301, a plurality of air intake pipes 302 corresponding to the drying towers 100, and a plurality of exhaust pipes 303 corresponding to the drying towers 100. The air intake ends of the plurality of air intake pipes 302 are connected to the main air intake pipe 301, and the air outlet ends of the plurality of air intake pipes 302 are respectively connected to the second air supply ports 113 of the plurality of drying towers 100. The air intake ends of the plurality of exhaust pipes 303 are respectively connected to the second air supply ports 113 of the plurality of drying towers 100. In this manner, the gas to be dried can be input through the main air intake pipe 301 and transported to the drying towers 100 in the adsorption state via the air intake pipes 302. The wet gas generated by the drying towers 100 in the regenerating state can be discharged into the environment via the exhaust pipe 303. Alternatively, the wet gas can be cooled and separated before being mixed with the air to be dried via the air intake pipe 302 in countercurrent flow, then flowed into the drying towers 100 in the adsorption state for drying. Of course, the exhaust pipe 303 is not limited to discharging wet gas, but can also be used to adjust the pressure of the pipeline or the drying tower 100 to improve system stability.

[0051] Alternatively or additionally, each intake pipe 302 may be provided with a control valve 305, by which the flow rate and on-off of each intake pipe 302 can be adjusted. Alternatively or additionally, each exhaust pipe 303 may be provided with a control valve 306, by which the flow rate and on-off of each exhaust pipe 303 can be adjusted. The control valves 305 and 306 here may be pneumatic valves, electric valves, or other types of valves, and the embodiments of the present application are not limited in this respect. It will be understood that the above-mentioned valves in the second pipeline system 300 are merely exemplary and should not be understood as limiting the second pipeline system 300 to include only the valves shown above. In actual applications, various valves can be arranged in the second pipeline system 300 according to actual needs.

[0052] Alternatively or additionally, the second piping system 300 further includes at least one muffler 304. When a single muffler 304 is used, multiple exhaust pipes 303 are combined and then discharged through the same muffler 304. Alternatively, multiple mufflers 304 can be provided, in which case each muffler 304 is connected to the outlet ends of the multiple exhaust pipes 303. This helps reduce system noise.

[0053] The embodiments of the present application have been described above. The above description is illustrative and not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is selected to best explain the principles of the embodiments, their practical applications, or technical improvements in the market, or to enable other persons skilled in the art to understand the embodiments disclosed herein.

Claims

1. A drying tower, characterized in that: include: The tower body has an inner cavity, and a first gas transmission interface and a second gas transmission interface communicating with the inner cavity; as well as A first diffusion device is arranged in the inner cavity, and the first diffusion device includes a gas pipeline and at least one diffusion component with a perforated structure. One end of the gas pipeline is connected to the first gas interface, and the other end of the gas pipeline extends to a position close to the second gas interface. At least part of the at least one diffusion component is connected to the other end of the gas pipeline.

2. The drying tower according to claim 1, characterized in that The at least one diffusion component includes a plurality of diffusion components, and the plurality of diffusion components are respectively arranged at different positions of the inner cavity, and the plurality of diffusion components are connected through the gas transmission pipeline.

3. The drying tower according to claim 2, characterized in that The first gas transmission interface and the second gas transmission interface are respectively located at two ends of the tower body in the axial direction, and the plurality of diffusion components are arranged along the axis of the tower body.

4. The drying tower according to claim 1, characterized in that The at least one diffusion component includes a first diffusion component close to the second gas transmission interface, and the first diffusion component is connected to the other end of the gas transmission pipeline.

5. The drying tower according to claim 4, characterized in that The first diffusion component includes a first cylindrical structure and a first end cover. The cylindrical wall of the first cylindrical structure has the perforated structure. One end of the first cylindrical structure is connected to the other end of the gas pipeline. The first end cover blocks the other end of the first cylindrical structure.

6. The drying tower according to claim 4, characterized in that The at least one diffusion component further includes a second diffusion component, and one end of the gas pipeline is connected to the first gas transmission interface through the second diffusion component.

7. The drying tower according to claim 6, characterized in that The second diffusion component includes a second cylindrical structure, the cylindrical wall of the second cylindrical structure has the perforated structure, one end of the second cylindrical structure is connected to the first gas transmission interface, and the other end of the second cylindrical structure is connected to the gas transmission pipeline.

8. The drying tower according to claim 1, wherein A check valve is provided in the gas pipeline, and the check valve is used to limit the gas in the gas pipeline from flowing out through the first gas transmission interface.

9. The drying tower according to claim 1, wherein The inner cavity is also provided with a second diffusion device connected to the second gas transmission interface.

10. A gas drying system, characterized in that: The invention comprises a plurality of drying towers according to any one of claims 1 to 9, and a first pipeline system and a second pipeline system, wherein the first pipeline system is respectively connected to the first gas transmission interfaces of the plurality of drying towers, and the second pipeline system is respectively connected to the second gas transmission interfaces of the plurality of drying towers.

11. The gas drying system according to claim 10, characterized in that The first piping system includes a heater, an outlet main pipeline, a plurality of outlet pipelines corresponding to the plurality of drying towers, and a plurality of regeneration gas pipelines corresponding to the plurality of drying towers; The air inlet ends of the plurality of air outlet pipes are respectively connected to the first air transmission interfaces of the plurality of drying towers, and the air outlet ends of the plurality of air outlet pipes are connected to the main air outlet pipe; and The air inlet of the heater is connected to the main air outlet pipeline, and the air outlet of the heater is connected to the first air transmission interfaces of the plurality of drying towers respectively through the plurality of regeneration gas pipelines.

12. The gas drying system according to claim 11, characterized in that The gas outlet pipeline and the regeneration gas pipeline are respectively provided with a check valve.

13. The gas drying system according to claim 10, characterized in that The second piping system includes an air intake main pipe, a plurality of air intake pipes corresponding to the plurality of drying towers, and a plurality of exhaust pipes corresponding to the plurality of drying towers; The air inlet ends of the multiple air inlet pipes are connected to the air inlet main pipe, the air outlet ends of the multiple air inlet pipes are respectively connected to the second gas transmission interfaces of the multiple drying towers, and the air inlet ends of the multiple exhaust pipes are respectively connected to the second gas transmission interfaces of the multiple drying towers.

14. The gas drying system according to claim 13, characterized in that The second pipeline system further includes a muffler connected to the gas outlet ends of the plurality of exhaust pipes.

15. The gas drying system according to claim 13, characterized in that The air intake pipe and the exhaust pipe are respectively provided with control valves.

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