A method for purifying and filtering a gas by catalytic adsorption

Abstract

The application discloses a gas catalytic adsorption purification filtering method, which drives the to-be-processed gas to flow in a flow channel and to react with catalytic adsorption purification materials to realize purification treatment, characterized in that the to-be-processed gas is driven to pass through a purification flow channel with a gradually decreasing cross section along the advancing direction and to react with the catalytic adsorption purification materials arranged on the inner wall of the purification flow channel to realize purification treatment. The adsorption purification filtering method disclosed by the application realizes adsorption based on the arc-shaped and reduced-diameter purification flow channel, can better improve the adsorption treatment and purification efficiency, can match the adsorption rate at all positions and the consumption rate of the adsorption materials to improve the utilization efficiency of the adsorbent materials, and facilitates the regeneration treatment of the adsorbent materials.

Description

Technical Field

[0001] This invention relates to the field of gas purification and treatment technology, and in particular to a gas catalytic adsorption purification and filtration method. Background Technology

[0002] Catalytic filtration is a conventional method for gas purification. Existing gas catalytic filtration technologies generally involve placing layered catalytic adsorbent particles in a gas flow channel to form an adsorption bed. The gas to be treated is then driven to flow through the adsorption bed, allowing harmful components in the gas to come into contact with and react with the adsorbent, thus capturing and purifying them. In some technologies, adsorbent particles are loaded onto porous materials to form an adsorption material; however, during adsorption, the gas to be treated is still driven to pass through the adsorption material for adsorption treatment.

[0003] In this existing catalytic adsorption filtration method, the gas to be treated typically passes through the adsorbent material in a unidirectional vertical direction. This usually presents the following problems: 1. The contact-collision-reaction filtration process between the gas to be treated and the adsorbent material is relatively short, making it difficult to improve adsorption filtration efficiency. 2. Because the gas to be treated passes through the adsorbent material vertically, the initial contact area between the adsorbent material and the gas to be treated has a higher reaction efficiency, while the subsequent contact area has a lower reaction efficiency. This uneven reaction efficiency makes it difficult to control the overall regeneration time of the adsorbent, and this inconsistency in purification efficiency reduces the overall purification effect and efficiency. 3. The gas to be treated passes through the adsorbent material uniformly. After the adsorbent material at the front comes into contact with harmful substances and reacts, it increases in volume and blocks the pore channels, leading to blockage and reducing the purification reaction efficiency of the subsequent adsorbent materials.

[0004] Therefore, how to better improve adsorption efficiency, increase the utilization efficiency of adsorbent materials, and facilitate the regeneration and treatment of adsorbent materials is a long-term direction that technical personnel in the field of catalytic adsorption purification and filtration have been striving to improve. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the technical problem to be solved by the present invention is: how to provide a gas catalytic adsorption purification filtration method that can better improve the adsorption treatment purification efficiency, improve the utilization efficiency of adsorbent materials, and facilitate the regeneration of adsorbent materials.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A gas catalytic adsorption purification and filtration method is disclosed, wherein the gas to be treated is driven to flow in a flow channel and react with the catalytic adsorption purification material to achieve purification treatment. The method is characterized in that the gas to be treated is driven to pass through a purification flow channel with a cross-section that gradually decreases in the forward direction and reacts with the catalytic adsorption purification material disposed on the inner wall of the purification flow channel to achieve purification treatment.

[0008] In this way, the catalytic adsorption purification material is placed on the inner wall of the purification channel, whose diameter gradually decreases in the forward direction, allowing it to contact the passing gas and react with and purify harmful components. When the gas is at the rear inlet of the purification channel, the concentration of harmful components is higher, corresponding to a larger area of ​​purification material on the inner wall of the channel. As the gas flows forward through the purification channel, the cross-section gradually decreases, and the area of ​​adsorption material shrinks. However, as the gas is gradually purified, the concentration of harmful components also decreases, and the flow velocity increases as the cross-section of the purification channel decreases. Therefore, this design ensures a high consistency in the purification rate throughout the purification channel, improving the uniformity of adsorption material application and ultimately enhancing the adsorption treatment purification efficiency.

[0009] Furthermore, this method relies on an adsorption device, which includes an airflow channel with an inlet at one end and an outlet at the other. A fan is provided at either the inlet or outlet. An adsorption bed is provided within the airflow channel. The adsorption bed includes a partition plate arranged along the cross-section of the airflow channel. Several air passage holes are evenly distributed on the partition plate. Cylindrical adsorption cylinders are vertically fixed outward around each air passage hole on the side of the partition plate located in the air inlet direction. The end of the adsorption cylinder away from the partition plate is sealed. Several purification channels with gradually decreasing cross-sections are evenly distributed on the outer peripheral wall of the adsorption cylinder. A layer of catalytic adsorption material is provided on the inner wall of the purification channels.

[0010] In this way, when the adsorption device is working, the fan provides airflow power, carrying the gas to be purified into the airflow channel from the inlet end and through the adsorption bed for purification. On the adsorption bed, the gas enters the purification channel from outside the adsorption cylinder and reacts with the catalytic adsorption material on the inner wall of the purification channel to achieve adsorption purification. Because the cross-section of the purification channel gradually decreases inward, although the adsorption area decreases and the flow velocity increases as the gas flows inward, the content of harmful components in the gas also gradually decreases. This results in a high consistency of purification rate before and after the purification channel, which can better improve the adsorption purification efficiency. At the same time, it facilitates the regeneration of the adsorbent after the purification reaction is completed, avoids ineffective regeneration, and improves the utilization efficiency of the purification material.

[0011] Furthermore, the innermost end of the purification channel is connected to the inner cavity of the adsorption cylinder through a porous structure loaded with catalytic adsorption material.

[0012] This avoids the direct connection between the innermost end of the purification channel and the inner cavity of the adsorption cylinder, which could lead to leakage of untreated gas.

[0013] Furthermore, the purification channel is arranged in a spiral shape extending inward along the circumference of the adsorption cylinder.

[0014] This allows for a better extension of the purification channel length, thereby improving its adsorption and purification effect.

[0015] Furthermore, the purification channel is inclined from top to bottom.

[0016] This also extends the length of the purification channel, improving its adsorption and purification effect. Good purification results can be achieved even within a relatively thin adsorption cylinder.

[0017] Furthermore, the adsorption cylinder is made of porous material and has some adsorption and purification material loaded inside.

[0018] In this way, the adsorption cylinder is made of porous material, making it lighter, while being able to carry part of the adsorption and purification material. This allows some gas to enter the adsorption cylinder and react with the loaded adsorption and purification material to achieve purification, thus improving the purification efficiency.

[0019] Furthermore, a catalytic adsorption material layer is provided on both the inner and outer sides of the adsorption cylinder, and the catalytic adsorption material layer on the inner side of the adsorption cylinder has a weak area that allows gas to pass through at the position corresponding to the inner end of the purification channel.

[0020] In this way, the catalytic adsorption material layer on the outside of the adsorption cylinder better increases the contact area between the gas and the catalytic adsorption material, thereby improving the purification efficiency. At the same time, it shields the path of gas entering the adsorption cylinder, ensuring that most of the gas can only pass through the purification channel to complete the adsorption treatment. The internal catalytic adsorption material layer shields the path of gas entering the adsorption cylinder from flowing out of the adsorption cylinder, allowing it to flow out into the purification cylinder only from the weak area corresponding to the outlet of the purification channel, thus ensuring the gas purification effect.

[0021] Furthermore, the purification channels are designed to be evenly distributed in rows circumferentially, and the cross-section of the purification channels is a vertical rectangle. This maximizes the surface area of ​​the purification channels within the limited volume of the adsorption cylinder, thereby improving purification efficiency and effectiveness.

[0022] Furthermore, the adsorption cylinder is designed in layers along the axial direction, and the layers are conical and annular. The purification flow channel is designed on the layered surface of the upper and lower layers.

[0023] In this way, firstly, the adsorption cylinder can be produced using molds in layers, facilitating the production and demolding of the purification channel; secondly, during adsorption bed regeneration, each layer can be regenerated separately, allowing the catalytic adsorption material inside the adsorption cylinder to complete its regeneration process, and its regeneration products can overflow from the layer separation points. In practical implementation, the adsorption cylinder can also be directly integrally printed using 3D printing, but this integral forming method is not conducive to the regeneration of the catalytic adsorption material.

[0024] Furthermore, the airflow channel is vertically arranged with the lower end being the air outlet. Each adsorption cylinder has a cover plate at the upper end away from the partition to achieve sealing. Each cover plate has a pressure mesh at its upper end, and the pressure mesh is detachably fixed to the inner wall of the airflow channel around its perimeter.

[0025] This makes it easy to install and remove the adsorption cylinder.

[0026] Furthermore, the adsorption cylinder is manufactured using the following production method: a) each layer of the adsorption cylinder is produced separately; b) after the layers of the adsorption cylinder are assembled into a cylindrical shape, the loading of the catalytic adsorption material layer on the inner side of the adsorption cylinder is completed first, and then the loading of the catalytic adsorption material layer on the outer side of the adsorption cylinder and the catalytic adsorption material on the inner wall of the purification channel is completed.

[0027] Furthermore, step a involves using a mold to produce each layer of the adsorption cylinder. This facilitates production and reduces costs.

[0028] Furthermore, in step b, the catalytic adsorption material is prepared in granular form. The maximum pore size of the material in the adsorption cylinder is within the particle size range of the catalytic adsorption material. The catalytic adsorption material particles are loaded under negative pressure using a binder. This allows for a faster and more convenient loading of the catalytic adsorption material layer.

[0029] Furthermore, step b is achieved using an adsorption cylinder catalytic adsorption material loading and processing device. This device includes an overall cylindrical outer shell with a depth greater than the height of the adsorption cylinder. The inner diameter of the outer shell is greater than the outer diameter of the adsorption cylinder, and a central tube is vertically fixed at its axial position. A pressure plate is positioned at the upper end of the central tube corresponding to the height of the adsorption cylinder. The pressure plate matches the shape of the upper end of the adsorption cylinder and is used to press and fix the adsorption cylinder. A central tube vent is provided on the central tube. An end cap is also correspondingly provided at the upper end of the outer shell, and an upper vent pipe is connected upwards from the center of the end cap. The lower end of the upper air pipe passes through the end cap and connects to the central pipe after the end cap is closed. An upper fan is installed on the upper air pipe. An upper feeding pipe with a switch valve is also connected to the upper air pipe between the upper fan and the end cap. The upper feeding pipe is connected to an upper feeding box. A hollow interlayer is provided on the outer shell and a lower air pipe is connected to it. A lower fan is installed on the lower air pipe. A lower feeding pipe with a switch valve is also connected to the lower air pipe between the lower fan and the outer shell. The lower feeding pipe is connected to a lower feeding box. An outer shell air hole communicating with the hollow interlayer is opened on the inner wall of the outer shell.

[0030] In this way, when the processing equipment is working, first open the end cover, and insert the adsorption cylinder into the central tube according to its own layers. Use a pressure plate to fix the adsorption cylinder and seal the upper port of the adsorption cylinder to complete the installation of the adsorption cylinder. Then close the end cover. First turn on the lower fan to guide the airflow, so that the inner cavity of the adsorption cylinder generates an outward negative pressure. Then add granular catalytic adsorption material through the upper feeding box. It enters the inner cavity of the adsorption cylinder with the negative pressure airflow through the upper feeding pipe and the central tube. Under the action of negative pressure, it adheres and fixes to the inner wall of the adsorption cylinder to complete the load, forming a layer of catalytic adsorption material on the inner wall of the adsorption cylinder. Then turn off the lower fan and turn on the upper fan to create an upward airflow negative pressure. Then add granular catalytic adsorption material through the lower feeding box. It enters the inner cavity of the outer shell with the negative pressure airflow through the lower feeding pipe and the hollow interlayer on the outer shell. Under the action of negative pressure, it adheres and fixes to the outer wall of the adsorption cylinder and the inner wall of the purification channel to complete the load, forming a layer of catalytic adsorption material on the outer wall of the adsorption cylinder and the inner wall of the purification channel. During the loading process, under the negative pressure of the upward airflow, the inner end of the purification channel is the thinnest part of the adsorption cylinder. The inward airflow is the strongest at this point, which can blow away some of the inner adsorption material that was previously loaded at this point. Therefore, after the loading is completed, the catalytic adsorption material at this point on the inner wall of the adsorption cylinder is relatively thin, which can naturally form a weak area that allows gas to pass through.

[0031] Furthermore, atomizing nozzles are respectively provided on the outer wall of the central tube and the inner wall of the outer shell, and the atomizing nozzles are connected to the load agent source through the spray pipe.

[0032] In this way, during the loading of the catalytic adsorption material, while or before adding the catalytic adsorption material, the atomizing nozzle sprays out a mist of the loading agent. The main component of the loading agent is a binder, which can better cooperate with the negative pressure airflow to complete the loading of the catalytic adsorption material on the inner and outer side walls of the adsorption cylinder and the inner wall of the purification channel, thereby improving the adhesion of the catalytic adsorption material.

[0033] Furthermore, the pressure plate is installed on the central tube by means of a threaded connection.

[0034] This facilitates the loading and unloading of the pressure plate to enable the installation of the adsorption cylinder.

[0035] Furthermore, a positioning cone is provided on the bottom surface of the outer shell at the lower end of the central tube.

[0036] This facilitates the positioning and installation of the lower end of the adsorption cylinder.

[0037] Furthermore, a sealing ring is provided at the upper end of the central tube.

[0038] This makes it easy to close the end cap, and ensures a sealed connection between the upper air tube and the central tube, preventing air leakage.

[0039] Furthermore, one end of the end cap is hinged to the outer shell, and a locking device is provided between the other end and the outer shell.

[0040] This makes it easy to open and lock the end cap.

[0041] Furthermore, the central tube vents and the outer shell vents are evenly distributed in the circumferential direction and layered in the height direction.

[0042] This allows for a more uniform loading of the catalytic adsorption material.

[0043] Therefore, the above-mentioned adsorption cylinder catalytic adsorption material loading processing equipment can efficiently, quickly, stably and uniformly load the adsorption cylinder with catalytic adsorption material.

[0044] Thus, the adsorption purification filtration method and adsorption device disclosed in this invention achieve adsorption based on an arc-shaped narrowed purification channel, which can better improve the adsorption treatment purification efficiency, match the adsorption rate and adsorption material consumption rate at various locations to improve the utilization efficiency of the adsorbent material, and facilitate the regeneration of the adsorbent material. Attached Figure Description

[0045] Figure 1 This is a schematic diagram of the adsorption device in an embodiment of the present invention.

[0046] Figure 2 for Figure 1 A schematic diagram of the structure of a single adsorption cylinder.

[0047] Figure 3 for Figure 1 A schematic diagram of the structure of a single middle layer in the layered adsorption cylinder.

[0048] Figure 4 for Figure 3 A cross-sectional view along the AA direction.

[0049] Figure 5 This is a schematic diagram of the adsorption cylinder catalytic adsorption material loading and processing equipment used in the embodiments of the present invention.

[0050] Figure 6 for Figure 5 A schematic diagram showing the adsorption cylinder after it has been installed. Detailed Implementation

[0051] The present invention will now be described in further detail with reference to specific embodiments.

[0052] Example: A gas catalytic adsorption purification and filtration method, wherein the gas to be treated is driven to flow in a flow channel and react with the catalytic adsorption purification material to achieve purification treatment. The method is characterized in that the gas to be treated is driven to pass through a purification flow channel with a cross-section that gradually decreases in the forward direction and reacts with the catalytic adsorption purification material disposed on the inner wall of the purification flow channel to achieve purification treatment.

[0053] In this way, the catalytic adsorption purification material is placed on the inner wall of the purification channel, whose diameter gradually decreases in the forward direction, allowing it to contact the passing gas and react with and purify harmful components. When the gas is at the rear inlet of the purification channel, the concentration of harmful components is higher, corresponding to a larger area of ​​purification material on the inner wall of the channel. As the gas flows forward through the purification channel, the cross-section gradually decreases, and the area of ​​adsorption material shrinks. However, as the gas is gradually purified, the concentration of harmful components also decreases, and the flow velocity increases as the cross-section of the purification channel decreases. Therefore, this design ensures a high consistency in the purification rate throughout the purification channel, improving the uniformity of adsorption material application and ultimately enhancing the adsorption treatment purification efficiency.

[0054] Specifically, this method relies on an adsorption device, see [link to relevant documentation]. Figures 1-4 As shown, the adsorption device includes an airflow channel 1, with one end of the airflow channel 1 being an air inlet 2 and the other end being an air outlet 3. A fan 4 is provided at the air inlet or air outlet. An adsorption bed is provided inside the airflow channel. The adsorption bed includes a partition 5 arranged along the cross section of the airflow channel. Several air passages are evenly arranged on the partition 5. Cylindrical adsorption cylinders 6 are vertically fixed outward around each air passage on the side of the partition 5 located in the air inlet direction. The end of the adsorption cylinder 6 away from the partition is sealed. Several purification channels 7 with gradually decreasing cross sections are evenly distributed on the outer peripheral wall of the adsorption cylinder 6. A layer of catalytic adsorption material is provided on the inner wall of the purification channels.

[0055] In this way, when the adsorption device is working, the fan provides airflow power, carrying the gas to be purified into the airflow channel from the inlet end and through the adsorption bed for purification. On the adsorption bed, the gas enters the purification channel from outside the adsorption cylinder and reacts with the catalytic adsorption material on the inner wall of the purification channel to achieve adsorption purification. Because the cross-section of the purification channel gradually decreases inward, although the adsorption area decreases and the flow velocity increases as the gas flows inward, the content of harmful components in the gas also gradually decreases. This results in a high consistency of purification rate before and after the purification channel, which can better improve the adsorption purification efficiency. At the same time, it facilitates the regeneration of the adsorbent after the purification reaction is completed, avoids ineffective regeneration, and improves the utilization efficiency of the purification material.

[0056] Among them, the innermost end of the purification channel 7 is connected to the inner cavity of the adsorption cylinder through a porous structure loaded with catalytic adsorption material.

[0057] This avoids the direct connection between the innermost end of the purification channel and the inner cavity of the adsorption cylinder, which could lead to leakage of untreated gas.

[0058] The purification channel 7 is arranged in a spiral shape extending inward along the circumference of the adsorption cylinder.

[0059] This allows for a better extension of the purification channel length, thereby improving its adsorption and purification effect.

[0060] The purification channel 7 is inclined from top to bottom.

[0061] This also extends the length of the purification channel, improving its adsorption and purification effect. Good purification results can be achieved even within a relatively thin adsorption cylinder.

[0062] The adsorption cylinder 6 is made of porous material and contains some adsorption and purification material inside.

[0063] In this way, the adsorption cylinder is made of porous material, making it lighter, while being able to carry part of the adsorption and purification material. This allows some gas to enter the adsorption cylinder and react with the loaded adsorption and purification material to achieve purification, thus improving the purification efficiency.

[0064] The adsorption cylinder 6 has a catalytic adsorption material layer 8 on both its inner and outer sides. The catalytic adsorption material layer on the inner side of the adsorption cylinder has a weak area that allows gas to pass through, corresponding to the position at the inner end of the purification channel.

[0065] In this way, the catalytic adsorption material layer on the outside of the adsorption cylinder better increases the contact area between the gas and the catalytic adsorption material, thereby improving the purification efficiency. At the same time, it shields the path of gas entering the adsorption cylinder, ensuring that most of the gas can only pass through the purification channel to complete the adsorption treatment. The internal catalytic adsorption material layer shields the path of gas entering the adsorption cylinder from flowing out of the adsorption cylinder, allowing it to flow out into the purification cylinder only from the weak area corresponding to the outlet of the purification channel, thus ensuring the gas purification effect.

[0066] The purification channels 7 are designed with rows of channels evenly distributed circumferentially, and the cross-section of each channel is a vertical rectangle. This maximizes the surface area of ​​the purification channels within the limited volume of the adsorption cylinder, thereby improving purification efficiency and effectiveness.

[0067] The adsorption cylinder 6 is designed in layers along the axial direction, and the layers are conical and annular. The purification flow channel is designed on the layered surface of the upper and lower layers.

[0068] In this way, firstly, the adsorption cylinder can be produced using molds in layers, facilitating the production and demolding of the purification channel; secondly, during adsorption bed regeneration, each layer can be regenerated separately, allowing the catalytic adsorption material inside the adsorption cylinder to complete its regeneration process, and its regeneration products can overflow from the layer separation points. In practical implementation, the adsorption cylinder can also be directly integrally printed using 3D printing, but this integral forming method is not conducive to the regeneration of the catalytic adsorption material.

[0069] The airflow channel 1 is vertically arranged and the lower end is the air outlet 3. Each adsorption cylinder is provided with a cover plate 9 at the upper end away from the partition to achieve sealing. Each cover plate is provided with a pressure net 10 at the upper end. The pressure net 10 is detachably fixed to the inner wall of the airflow channel.

[0070] This makes it easy to install and remove the adsorption cylinder.

[0071] In this embodiment, the adsorption cylinder is manufactured using the following production method: a) each layer of the adsorption cylinder is produced separately; b) after the layers of the adsorption cylinder are assembled into a cylindrical shape, the loading of the catalytic adsorption material layer on the inner side of the adsorption cylinder is completed first, and then the loading of the catalytic adsorption material layer on the outer side of the adsorption cylinder and the catalytic adsorption material on the inner wall of the purification channel is completed.

[0072] In step a, the adsorption cylinder is produced using a mold forming method. This facilitates production and reduces costs.

[0073] In step b, the catalytic adsorption material is prepared in granular form. The maximum pore size of the material in the adsorption cylinder is within the particle size range of the catalytic adsorption material. The catalytic adsorption material particles are loaded under negative pressure using a binder. This allows for a faster and more convenient loading of the catalytic adsorption material layer.

[0074] Step b is implemented using an adsorption cylinder catalytic adsorption material loading and processing device, which can be found in [reference needed]. Figures 5-6 As shown, the device includes an outer shell 11 that is cylindrical in shape and has a depth greater than the height of the adsorption cylinder. The inner diameter of the outer shell 11 is greater than the outer diameter of the adsorption cylinder, and a central tube 12 is vertically fixed at the axial position. A pressure plate 13 is provided at the upper end of the central tube 12 corresponding to the height of the adsorption cylinder. The pressure plate 13 matches the shape of the upper end of the adsorption cylinder 6 and is used to press and fix the adsorption cylinder 6. A central tube air hole 14 is opened on the central tube 12. An end cap 15 is also provided at the upper end of the outer shell. An upper air pipe 16 is connected upward from the middle of the end cap 15. The lower end of the upper air pipe 16 passes through the end cap and connects with it after the end cap is closed. The central tube is connected to an upper air pipe 16, on which an upper fan 17 is installed. An upper feeding pipe with a switch valve is also connected to the upper air pipe between the upper fan and the end cap. The upper feeding pipe is connected to an upper feeding box 18. A hollow interlayer 24 is provided on the outer shell, and a lower air pipe 19 is connected to it. A lower fan 20 is installed on the lower air pipe. A lower feeding pipe with a switch valve is also connected to the lower air pipe between the lower fan 20 and the outer shell. The lower feeding pipe is connected to a lower feeding box 21. An outer shell air hole 22 communicating with the hollow interlayer is opened on the inner wall of the outer shell. Atomizing nozzles 23 are also provided on the outer wall of the central tube and the inner wall of the outer shell. The atomizing nozzles 23 are connected to a loading agent source (not shown in the figure) via a spray pipe.

[0075] In this way, when the processing equipment is working, first open the end cap, and insert the adsorption cylinder into the central tube layer by layer. Use a pressure plate to fix the adsorption cylinder and seal the upper port of the adsorption cylinder to complete the installation of the adsorption cylinder. Then close the end cap. First turn on the lower fan to guide the airflow, so that the inner cavity of the adsorption cylinder generates an outward negative pressure. Then turn on the atomizing nozzle on the outer wall of the central tube to spray the loading agent. The main component of the loading agent is a binder, which can evenly adhere to the inner wall of the adsorption cylinder under the action of negative pressure airflow. Then turn off the atomizing nozzle, and then add granular catalytic adsorption material through the upper feeding box. It enters the inner cavity of the adsorption cylinder with the negative pressure airflow through the upper feeding pipe and the central tube, and adheres and fixes to the inner wall of the adsorption cylinder under the action of negative pressure to complete the loading, forming a layer of catalytic adsorption material on the inner wall of the adsorption cylinder. Then, the lower fan is turned off and the upper fan is turned on to create an upward airflow negative pressure. The atomizing nozzle on the inner wall of the outer shell is opened, spraying out the loading agent, which adheres to the outer wall of the adsorption cylinder and the inner wall of the purification channel. Next, granular catalytic adsorption material is added through the lower feeding box, allowing it to enter the inner cavity of the outer shell through the lower feeding pipe and the hollow interlayer on the outer shell, carried by the negative pressure airflow. Under the action of negative pressure, it adheres and fixes to the outer wall of the adsorption cylinder and the inner wall of the purification channel, completing the loading process and forming a layer of catalytic adsorption material on the outer wall of the adsorption cylinder and the inner wall of the purification channel. During the loading process, under the upward airflow negative pressure, the inner end of the purification channel is the thinnest point inside and outside the adsorption cylinder. The inward airflow is strongest at this point, blowing away some of the inner layer of adsorption material previously loaded at this location. Therefore, after loading, the catalytic adsorption material at this location on the inner wall of the adsorption cylinder is relatively thin, naturally forming a weak area that allows gas to pass through. Alternatively, if the adsorption cylinder is 3D printed as a whole, the loading of the catalytic adsorption material can be completed using the aforementioned processing equipment after forming.

[0076] The pressure plate 13 is installed on the central tube 12 by means of a threaded connection.

[0077] This facilitates the loading and unloading of the pressure plate to enable the installation of the adsorption cylinder.

[0078] The lower end of the central tube 12 has a positioning cone 24 on the inner bottom surface of the outer shell facing upwards.

[0079] This facilitates the positioning and installation of the lower end of the adsorption cylinder.

[0080] A sealing ring 26 is provided at the upper end of the central tube 12.

[0081] This makes it easy to close the end cap, and ensures a sealed connection between the upper air tube and the central tube, preventing air leakage.

[0082] One end of the end cap 15 is hinged to the outer shell 11, and a locking device is provided between the other end and the outer shell.

[0083] This makes it easy to open and lock the end cap.

[0084] The central tube vent 14 and the outer shell vent 22 are both evenly distributed in the circumferential direction and layered in the height direction.

[0085] This allows for a more uniform loading of the catalytic adsorption material.

[0086] Therefore, the above-mentioned adsorption cylinder catalytic adsorption material loading processing equipment can efficiently, quickly, stably and uniformly load the adsorption cylinder with catalytic adsorption material.

Claims

1. A gas catalytic adsorption purification and filtration method, wherein the gas to be treated is driven to flow in a flow channel and react with a catalytic adsorption material to achieve purification treatment, characterized in that, The gas to be treated is driven through a purification channel whose cross-section gradually decreases along the forward direction, and reacts with the catalytic adsorption material set on the inner wall of the purification channel to achieve purification treatment. The method relies on an adsorption device, which includes an airflow channel with an inlet at one end and an outlet at the other. A fan is provided at either the inlet or outlet. An adsorption bed is provided inside the airflow channel. The adsorption bed includes a partition plate arranged along the cross-section of the airflow channel. Several air passage holes are evenly distributed on the partition plate. Cylindrical adsorption cylinders are vertically fixed outward around each air passage hole on the side of the partition plate located in the air inlet direction. The end of the adsorption cylinder away from the partition plate is sealed. Several purification channels with gradually decreasing cross-sections are evenly distributed on the outer peripheral wall of the adsorption cylinder. A layer of catalytic adsorption material is provided on the inner wall of the purification channels. The purification channel is arranged in a spiral shape extending inward along the circumference of the adsorption cylinder; The purification channel is inclined from top to bottom.

2. The gas catalytic adsorption purification and filtration method as described in claim 1, characterized in that, The innermost end of the purification channel is connected to the inner cavity of the adsorption cylinder through a porous structure loaded with catalytic adsorption material.

3. The gas catalytic adsorption purification and filtration method as described in claim 1, characterized in that, The adsorption cylinder is made of porous material and is loaded with some adsorption and purification material inside. The adsorption cylinder has a catalytic adsorption material layer on both the inner and outer sides. The catalytic adsorption material layer on the inner side of the adsorption cylinder has a weak area that allows gas to pass through, corresponding to the position at the inner end of the purification channel.

4. The gas catalytic adsorption purification and filtration method as described in claim 1, characterized in that, The purification channels are designed to be evenly distributed in rows in the circumferential direction, and the cross-section of the purification channels is a vertical rectangle.

5. The gas catalytic adsorption purification and filtration method as described in claim 1, characterized in that, The adsorption cylinder is designed in layers along the axial direction, and the layers are conical and annular. The purification flow channel is designed on the layered surface of the upper and lower layers.

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