Gas catalytic adsorption, purification and filtration method

Abstract

The invention discloses a gas catalytic adsorption, purification and filtration method, which drives gas to be treated to flow in a flow channel and contact and react with a catalytic adsorption and purification material to realize purification treatment, and is characterized in that the gas to be treated is driven to pass through a purification flow channel with a section gradually reduced along the advancing direction; the catalytic adsorption purification material is arranged on the inner wall of the purification flow channel. According to the adsorption, purification and filtration method disclosed by the invention, adsorption is realized on the basis of the arc-shaped reducing purification runner, the adsorption treatment and purification efficiency can be better improved, the adsorption rate and the adsorption material consumption rate at all positions can be matched so as to improve the utilization efficiency of an adsorbent material, and the regeneration treatment of the adsorbent material is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of gas purification and treatment, and in particular to a gas catalytic adsorption purification and filtering method. Background Art

[0002] Catalytic filtration purification is a common method for gas purification. Existing gas catalytic filtration purification technologies generally place a layer of catalytic purification adsorbent particles in the gas flow path to form an adsorption bed. The gas to be treated is then driven through the adsorption bed, allowing harmful components in the gas to come into contact and react with the adsorbent, trapping them and achieving filtration purification. In some technologies, the adsorbent particles are loaded onto a porous material to form an adsorption material. However, during adsorption treatment, the gas to be treated is still driven through the adsorption material for adsorption treatment.

[0003] In this existing catalytic adsorption filtration method, the gas to be treated usually passes through the adsorbent material in a unidirectional vertical direction, which usually has the following problems: 1. The process of contact-collision-reaction filtration between the gas to be treated and the adsorbent material is short, making it difficult to improve the adsorption filtration efficiency. 2. The gas to be treated passes through the adsorbent material in a vertical direction, so the reaction efficiency of the adsorbent material in the first contact part with the gas to be treated is higher, and the reaction efficiency of the later contact part with the gas to be treated is lower. This unevenness in the reaction efficiency before and after makes it difficult to control the overall regeneration time of the adsorbent. This inconsistency in the purification efficiency before and after reduces the overall purification effect and efficiency. 3. The gas to be treated passes through the adsorbent material uniformly. After the adsorbent material on the front side contacts and reacts with harmful substances, it will cause the volume to increase and block the pore channels, resulting in blockage and reducing the purification reaction efficiency of the subsequent adsorbent material.

[0004] Therefore, how to better improve the adsorption efficiency, improve the utilization efficiency of adsorbent materials, and facilitate the regeneration of adsorbent materials is the direction of long-term improvement that technicians in the field of catalytic adsorption purification and filtration have been working hard to improve. Summary of the Invention

[0005] In view of the above-mentioned deficiencies in 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 the adsorbent material, and facilitate the regeneration treatment of the adsorbent material.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions: A gas catalytic adsorption purification and filtration method drives the gas to be treated to flow in a flow channel and react with the catalytic adsorption purification material to achieve purification treatment. It 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 along the forward direction, and reacts with the catalytic adsorption purification material arranged on the inner wall of the purification flow channel to achieve purification treatment.

[0007] In this way, the catalytic adsorption purification material is set on the inner wall of the purification flow channel whose diameter gradually decreases in the forward direction, so that it contacts the passing gas to achieve reaction purification of harmful components. In this way, when the gas is located at the rear end entrance of the purification flow channel, the content of harmful components in the gas here is higher, and the corresponding purification material area on the inner wall of the purification flow channel is larger; as the gas flows forward along the purification flow channel, the cross-section of the purification flow channel gradually becomes smaller, and the adsorption purification material area becomes smaller, but at the same time, the content of harmful components in the gas gradually decreases after being purified, and the flow rate increases after the cross-section of the purification flow channel becomes smaller. Therefore, this can make the purification rate before and after the purification flow channel maintain a high consistency, improve the uniformity of the use of adsorption materials, and better improve the adsorption treatment purification efficiency.

[0008] Furthermore, the present method is implemented by an adsorption device, which includes an air flow channel, one end of the air flow channel is an air inlet end, and the other end is an air outlet end, the air inlet end or the air outlet end is provided with a fan, and an adsorption bed is provided in the air flow channel, the adsorption bed includes a partition arranged along the cross section of the air flow channel, the partition is evenly arranged with a plurality of air holes, and the partition is located on one side of the air inlet direction. A cylindrical adsorption cylinder is fixed vertically outward around each air hole, and the adsorption cylinder is sealed at one end away from the partition, and a plurality of purification flow channels with cross-sections gradually decreasing inward are evenly distributed on the outer peripheral wall of the adsorption cylinder, and a layer of catalytic adsorption material is provided on the inner wall of the purification flow channel.

[0009] In this way, when the adsorption device is working, the fan provides wind power, and the purified gas enters from the air inlet end of the air flow channel and passes through the adsorption bed for purification. On the adsorption bed, the gas enters the purification flow channel from the outside of the adsorption cylinder, and contacts and reacts with the catalytic adsorption material on the inner wall of the purification flow channel to achieve adsorption purification. Since the cross-section of the purification flow channel is gradually reduced inward, when the gas flows inward in the purification flow channel, although the adsorption area becomes smaller and the flow rate increases, the content of harmful components in the gas also gradually decreases. In this way, the purification rate before and after the purification flow channel has a high consistency, which can better improve the purification efficiency of the adsorption treatment. At the same time, it is convenient for the regeneration of the adsorbent after the purification reaction is completed, avoiding ineffective regeneration and improving the utilization efficiency of the purification material.

[0010] Furthermore, the innermost end of the purification flow channel is communicated with the inner cavity of the adsorption tube through a porous structure loaded with catalytic adsorption material.

[0011] In this way, the innermost end of the purification flow channel is prevented from being directly connected to the inner cavity of the adsorption tube, which may cause leakage of untreated gas.

[0012] Furthermore, the purification flow channel is arranged to extend inwardly in a spiral shape along the circumferential direction of the adsorption tube.

[0013] In this way, the length of the purification flow channel can be better extended and its adsorption purification treatment effect can be improved.

[0014] Furthermore, the purification flow channel is arranged to be inclined from top to bottom as a whole.

[0015] In this way, the length of the purification flow channel can be extended, and its adsorption purification effect can be improved. A better purification effect can be obtained in a thinner adsorption cylinder.

[0016] Furthermore, the adsorption cylinder is made of porous material and is loaded with a portion of adsorption and purification material inside.

[0017] In this way, the adsorption cylinder is made of porous materials, which makes it lighter and can carry part of the adsorption purification material. When part of the gas enters the adsorption cylinder, it can also contact and react with the carried adsorption purification material to achieve purification, thereby improving the purification treatment efficiency.

[0018] Furthermore, a catalytic adsorption material layer is provided on the inner and outer sides of the adsorption tube, and the catalytic adsorption material layer on the inner side of the adsorption tube has a weak area for gas to pass through at a position corresponding to the inner end of the purification flow channel.

[0019] In this way, the catalytic adsorption material layer on the outside of the adsorption cylinder effectively increases the contact area between the gas and the catalytic adsorption material, improving the purification efficiency. At the same time, it blocks the path of gas entering the adsorption cylinder, so that most gas can only pass through the purification channel to complete the adsorption treatment. The internal catalytic adsorption material layer blocks the path of gas entering the adsorption cylinder from exiting the adsorption cylinder, so that it can only flow out of the purification channel outlet corresponding to the weak area inside the purification cylinder, ensuring the gas purification effect.

[0020] Furthermore, the purification channels are evenly distributed in rows in the circumferential direction, and the cross-section of the purification channels is a vertical rectangle. This can maximize the surface area of the purification channels within the limited volume of the adsorption cylinder, thereby improving the purification efficiency and effect.

[0021] Furthermore, the adsorption cylinder is designed to be layered along the axial direction, and the layered surface is a conical ring, and the purification flow channel is designed on the layered surfaces of the upper and lower layers.

[0022] This allows the adsorption cartridge to be produced in layers using molds, facilitating demolding of the purification channel. Furthermore, during adsorption bed regeneration, each layer can be regenerated separately, facilitating the regeneration of the catalytic adsorption material within the cartridge, allowing the regenerated product to overflow from the layered locations. In practice, the adsorption cartridge can also be directly 3D printed as a single piece, but this monolithic approach is not conducive to the regeneration of the catalytic adsorption material.

[0023] Furthermore, the air flow channel is arranged vertically and the lower end is the air outlet end. A cover plate is provided at the upper end of each adsorption cylinder away from the partition to achieve sealing. A pressing net is integrally provided on the upper end of each cover plate, and the pressing net is detachably fixed on the inner wall of the air flow channel.

[0024] This makes it easy to install and disassemble the adsorption cylinder.

[0025] Furthermore, the adsorption cylinder is manufactured using the following production method: a. first, each layer of the adsorption cylinder is produced separately; b. after the layers of the adsorption cylinder are docked and 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 flow channel is completed.

[0026] Furthermore, in step a, the production of each layer of the adsorption cylinder is completed by using a mold forming method, which facilitates production and reduces costs.

[0027] Furthermore, in step b, the catalytic adsorption material is prepared into granules. The maximum pore size of the adsorption cartridge is within the catalytic adsorption material granule size range. The catalytic adsorption material granules are loaded with the catalytic adsorption material by means of a binder under negative pressure. This allows for faster and more convenient loading of the catalytic adsorption material layer.

[0028] Furthermore, the step b is realized by means of an adsorption tube catalytic adsorption material loading processing device, the adsorption tube catalytic adsorption material loading processing device comprises an outer shell which is in the shape of a cylinder as a whole and has a depth greater than the height of the adsorption tube, the inner diameter of the outer shell is greater than the outer diameter of the adsorption tube and a central tube is fixed vertically at the axial position, a pressing plate is provided at the upper end of the central tube corresponding to the height position of the adsorption tube, the pressing plate and the upper end of the adsorption tube match in shape and are used to realize the crimping and fixing of the adsorption tube, a central tube air hole is opened on the central tube, an end cover is also provided corresponding to the upper port of the outer shell, and an upper air pipe is connected upwardly in the middle of the end cover The lower end of the upper air pipe passes through the end cover and is connected to the central pipe after the end cover is closed. An upper air pipe is provided with an upper fan, and an upper feeding pipe with a switch valve is also connected to the upper air pipe between the upper fan and the end cover, and the upper feeding pipe is connected to an upper feeding box; a hollow interlayer is provided on the outer shell and is connected to a lower air pipe to the outside, and a lower air pipe is provided on the lower air pipe, and 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, and an outer shell air hole connected to the hollow interlayer is opened on the inner wall of the outer shell.

[0029] In this way, when the processing equipment is in operation, the end cap is first opened, and the adsorption cartridges are inserted into the outer core tube in layers. A pressure plate is used to secure the adsorption cartridges and seal the upper ports of the cartridges, completing the installation of the cartridges. The end cap is then closed. The lower fan is first turned on to direct airflow, creating an outward negative pressure within the cartridge cavity. Granular catalytic adsorption material is then added through the upper loading box. The material flows with the negative pressure through the upper loading tube and the core tube into the cartridge cavity. Under the negative pressure, the material adheres to the inner wall of the cartridge cavity, forming a layer of catalytic adsorption material on the cartridge cavity. The lower fan is then turned off and the upper fan is turned on to create an upward negative pressure. Granular catalytic adsorption material is then added through the lower loading box. The material flows with the negative pressure through the lower loading tube and the hollow interlayer of the outer shell into the inner core cavity. Under the negative pressure, the material adheres to the outer wall of the cartridge cavity and the inner wall of the purification channel, forming a layer of catalytic adsorption material on the outer surface of the cartridge and the inner wall of the purification channel. During the above-mentioned loading process, under the action of the upward wind flow negative pressure, the inner end position of the purification flow channel is the weakest position of the thickness inside and outside the adsorption tube. The inward wind flow formed here is the largest, which can blow away part of the inner layer of adsorption material loaded before this position. Therefore, after the loading is completed, the catalytic adsorption material at this position on the inner wall of the adsorption tube is thinner, and a weak area for gas to pass through can be naturally formed.

[0030] Furthermore, an atomizing nozzle is respectively provided on the outer wall of the central tube and the inner wall of the shell, and the atomizing nozzle is externally connected to a loading agent source through a spray pipe.

[0031] In this way, during the process of loading the catalytic adsorption material, at the same time as or before adding the catalytic adsorption material, the atomizing nozzle is used to spray out a mist-like loading agent source. The loading agent is mainly composed of a binder, which can better cooperate with the negative pressure wind flow 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 flow channel, thereby improving the adhesion strength of the catalytic adsorption material.

[0032] Furthermore, the pressing plate is mounted on the central tube by means of a screw thread connection.

[0033] In this way, the pressure plate can be easily loaded and unloaded to realize the installation of the adsorption cylinder.

[0034] Furthermore, a positioning cone is provided upwardly on the inner bottom surface of the shell at the lower end of the central tube.

[0035] This makes it easy to position and install the lower end of the adsorption cylinder.

[0036] Furthermore, a sealing ring is provided at the upper end of the central tube.

[0037] In this way, the end cover can be easily closed, and the upper air pipe and the central pipe can be sealed and connected without air leakage.

[0038] Furthermore, one end of the end cover is hinged to the outer shell, and a locking device is provided between the other end and the outer shell.

[0039] This makes it easier to open and lock the end cover.

[0040] Furthermore, the central tube air holes and the shell air holes are evenly distributed in the circumferential direction and arranged in layers in the height direction.

[0041] In this way, the loading of the catalytic adsorption material can be completed more evenly.

[0042] Therefore, the above-mentioned adsorption cylinder catalytic adsorption material loading processing equipment can efficiently, quickly, stably and evenly complete the loading of catalytic adsorption material on the adsorption cylinder.

[0043] In this way, the adsorption purification filtration method and adsorption device disclosed in the present invention realize adsorption based on the arc-shaped reduced diameter purification flow channel, which can better improve the adsorption treatment purification efficiency, and can match the adsorption rate and adsorption material consumption rate at each position to improve the utilization efficiency of the adsorbent material and facilitate the regeneration treatment of the adsorbent material. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 Schematic diagram of the structure of the adsorption device in an embodiment of the present invention.

[0045] Figure 2 for Figure 1 Schematic diagram of the structure of a separate adsorption cylinder.

[0046] Figure 3 for Figure 1 Schematic diagram of the structure of a separate middle layer of the middle adsorption cylinder layered arrangement.

[0047] Figure 4 for Figure 3 Cross-sectional view in the AA direction.

[0048] Figure 5 Schematic diagram of the adsorption tube catalytic adsorption material loading processing equipment used in an embodiment of the present invention.

[0049] Figure 6 for Figure 5 Schematic diagram after the adsorption cylinder is installed. DETAILED DESCRIPTION

[0050] The present invention will be further described in detail below with reference to specific embodiments.

[0051] Example: A gas catalytic adsorption purification and filtration method drives the gas to be treated to flow in a flow channel and react with the catalytic adsorption purification material to achieve purification treatment. Its characteristic is that the gas to be treated is driven to pass through a purification flow channel with a cross-section that gradually decreases along the forward direction, and reacts with the catalytic adsorption purification material arranged on the inner wall of the purification flow channel to achieve purification treatment.

[0052] In this way, the catalytic adsorption purification material is set on the inner wall of the purification flow channel whose diameter gradually decreases in the forward direction, so that it contacts the passing gas to achieve reaction purification of harmful components. In this way, when the gas is located at the rear end entrance of the purification flow channel, the content of harmful components in the gas here is higher, and the corresponding purification material area on the inner wall of the purification flow channel is larger; as the gas flows forward along the purification flow channel, the cross-section of the purification flow channel gradually becomes smaller, and the adsorption purification material area becomes smaller, but at the same time, the content of harmful components in the gas gradually decreases after being purified, and the flow rate increases after the cross-section of the purification flow channel becomes smaller. Therefore, this can make the purification rate before and after the purification flow channel maintain a high consistency, improve the uniformity of the use of adsorption materials, and better improve the adsorption treatment purification efficiency.

[0053] Specifically, the method is implemented by an adsorption device, see Figures 1-4 As shown, the adsorption device includes an air flow channel 1, one end of the air flow channel 1 is an air inlet end 2, and the other end is an air outlet end 3, the air inlet end or the air outlet end is provided with a fan 4, an adsorption bed is provided in the air flow channel, the adsorption bed includes a partition 5 arranged along the cross section of the air flow channel, the partition 5 is evenly arranged with a plurality of air holes, the partition 5 is located on the side of the air inlet direction, and a cylindrical adsorption cylinder 6 is fixed vertically outwardly around each air hole. The adsorption cylinder 6 is sealed at one end away from the partition, and a plurality of purification flow channels 7 with cross-sections gradually becoming smaller inward are evenly distributed on the outer peripheral wall of the adsorption cylinder 6, and a layer of catalytic adsorption material is provided on the inner wall of the purification flow channel.

[0054] In this way, when the adsorption device is working, the fan provides wind power, and the purified gas enters from the air inlet end of the air flow channel and passes through the adsorption bed for purification. On the adsorption bed, the gas enters the purification flow channel from the outside of the adsorption cylinder, and contacts and reacts with the catalytic adsorption material on the inner wall of the purification flow channel to achieve adsorption purification. Since the cross-section of the purification flow channel is gradually reduced inward, when the gas flows inward in the purification flow channel, although the adsorption area becomes smaller and the flow rate increases, the content of harmful components in the gas also gradually decreases. In this way, the purification rate before and after the purification flow channel has a high consistency, which can better improve the purification efficiency of the adsorption treatment. At the same time, it is convenient for the regeneration of the adsorbent after the purification reaction is completed, avoiding ineffective regeneration and improving the utilization efficiency of the purification material.

[0055] The innermost end of the purification channel 7 is communicated with the inner cavity of the adsorption tube through a porous structure loaded with catalytic adsorption material.

[0056] In this way, the innermost end of the purification flow channel is prevented from being directly connected to the inner cavity of the adsorption tube, which may cause leakage of untreated gas.

[0057] The purification channel 7 is arranged to extend inwardly in a spiral shape along the circumferential direction of the adsorption tube.

[0058] In this way, the length of the purification flow channel can be better extended and its adsorption purification treatment effect can be improved.

[0059] The purification channel 7 is arranged to be tilted from top to bottom as a whole.

[0060] In this way, the length of the purification flow channel can be extended, and its adsorption purification effect can be improved. A better purification effect can be obtained in a thinner adsorption cylinder.

[0061] The adsorption cylinder 6 is made of porous material and is loaded with a portion of adsorption and purification material.

[0062] In this way, the adsorption cylinder is made of porous materials, which makes it lighter and can carry part of the adsorption purification material. When part of the gas enters the adsorption cylinder, it can also contact and react with the carried adsorption purification material to achieve purification, thereby improving the purification treatment efficiency.

[0063] A catalytic adsorption material layer 8 is provided on the inner and outer sides of the adsorption tube 6 . The catalytic adsorption material layer on the inner side of the adsorption tube has a weak area for gas to pass through at the position corresponding to the inner end of the purification flow channel.

[0064] In this way, the catalytic adsorption material layer on the outside of the adsorption cylinder effectively increases the contact area between the gas and the catalytic adsorption material, improving the purification efficiency. At the same time, it blocks the path of gas entering the adsorption cylinder, so that most gas can only pass through the purification channel to complete the adsorption treatment. The internal catalytic adsorption material layer blocks the path of gas entering the adsorption cylinder from exiting the adsorption cylinder, so that it can only flow out of the purification channel outlet corresponding to the weak area inside the purification cylinder, ensuring the gas purification effect.

[0065] The purification channels 7 are evenly distributed in rows in the circumferential direction, and the cross-section of the purification channels is a vertical rectangle. This can maximize the surface area of the purification channels within the limited volume of the adsorption cylinder, thereby improving the purification efficiency and effect.

[0066] The adsorption cylinder 6 is designed to be layered along the axial direction, and the layered surface is a conical ring. The purification flow channel is designed on the layered surfaces of the upper and lower layers.

[0067] This allows the adsorption cartridge to be produced in layers using molds, facilitating demolding of the purification channel. Furthermore, during adsorption bed regeneration, each layer can be regenerated separately, facilitating the regeneration of the catalytic adsorption material within the cartridge, allowing the regenerated product to overflow from the layered locations. In practice, the adsorption cartridge can also be directly 3D printed as a single piece, but this monolithic approach is not conducive to the regeneration of the catalytic adsorption material.

[0068] Among them, the air flow channel 1 is arranged vertically and the lower end is the air outlet end 3. A cover plate 9 is provided at the upper end of each adsorption cylinder away from the partition to achieve sealing. A pressing net 10 is provided as a whole on the upper end of each cover plate. The pressing net 10 is detachably fixed on the inner wall of the air flow channel.

[0069] This makes it easy to install and disassemble the adsorption cylinder.

[0070] In this embodiment, the adsorption cylinder is manufactured using the following production method: a. First, each layer of the adsorption cylinder is produced separately; b. After the layers of the adsorption cylinder are docked and assembled into a cylinder 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 flow channel are completed.

[0071] In step a, the production of each layer of the adsorption cylinder is completed by using a mold forming method, which facilitates production and reduces costs.

[0072] In step b, the catalytic adsorption material is prepared into granules. The maximum pore size of the adsorption cartridge is within the catalytic adsorption material granule size range. The catalytic adsorption material granules are used with a binder to achieve loading of the catalytic adsorption material under negative pressure. This allows for faster and more convenient loading of the catalytic adsorption material layer.

[0073] Wherein, the step b is realized by an adsorption tube catalytic adsorption material loading processing equipment, the adsorption tube catalytic adsorption material loading processing equipment, see Figure 5-Figure 6As shown, it includes an outer shell 11 that is cylindrical as a whole 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 fixed vertically at the axial position. A pressing plate 13 is provided at the upper end of the central tube 12 corresponding to the height position of the adsorption cylinder. The pressing plate 13 matches the shape of the upper end of the adsorption cylinder 6 and is used to realize the crimping and fixing of the adsorption cylinder 6. A central tube air hole 14 is provided on the central tube 12, and an end cover 15 is also provided corresponding to the upper port of the outer shell. An upper air pipe 16 is connected upwardly to the middle of the end cover 15. The lower end of the upper air pipe 16 passes through the end cover and is connected to the end cover after the end cover is closed. The central tube is connected to the upper air pipe 16, and an upper fan 17 is installed on the upper air pipe. An upper feeding pipe with an on / off valve is also installed on the upper air pipe between the upper fan and the end cover, and the upper feeding pipe is connected to an upper feeding box 18. The outer shell is provided with a hollow interlayer 24 and is externally connected to a lower air pipe 19. The lower air pipe is provided with a lower fan 20. The lower air pipe between the lower fan 20 and the outer shell is also connected to a lower feeding pipe with an on / off valve. The lower feeding pipe is connected to a lower feeding box 21. The inner wall of the outer shell is provided with an outer shell air hole 22 that is connected to the hollow interlayer. Atomizing nozzles 23 are also installed on the outer wall of the central tube and the inner wall of the outer shell. Atomizing nozzles 23 are connected to an external loading agent source (not shown) through a spray pipe.

[0074] Thus, when the processing equipment is in operation, the end cap is first opened, and the adsorption tubes are inserted into the outer portion of the central tube according to their own layers. A pressure plate is used to secure the adsorption tubes and seal the upper ports of the adsorption tubes to complete the installation of the adsorption tubes. The end cap is then closed. The lower fan is first turned on to guide the airflow, creating an outward negative pressure in the inner cavity of the adsorption tubes. The atomizing nozzle on the outer wall of the central tube is then turned on to spray the loading agent, which is mainly composed of a binder that can evenly adhere to the inner wall of the adsorption tube under the action of the negative pressure airflow. The atomizing nozzle is then closed, and granular catalytic adsorption material is added through the upper feeding box. The granular catalytic adsorption material is then passed through the upper feeding tube and the central tube into the inner cavity of the adsorption tube along with the negative pressure airflow. Under the action of the negative pressure, it adheres to the inner wall of the adsorption tube to complete the loading, forming a layer of catalytic adsorption material on the inner wall of the adsorption tube. The lower blower is then turned off and the upper blower is turned on to create an upward negative pressure. The atomizing nozzle on the inner wall of the housing is opened to spray the loading agent, which adheres to the outer wall of the adsorption cylinder and the inner wall of the purification channel. Granular catalytic adsorbent material is then added through the lower feeding box. The granular catalytic adsorbent material is then introduced into the inner cavity of the housing through the lower feeding tube and the hollow interlayer of the housing with the negative pressure airflow. Under the action of the negative pressure, it adheres to the outer wall of the adsorption cylinder and the inner wall of the purification channel to complete the loading, forming a layer of catalytic adsorbent material on the outer side of the adsorption cylinder and the inner wall of the purification channel. Because the inner end of the purification channel is the weakest point of the adsorption cylinder under the action of the upward negative pressure during the loading process, the inward airflow is the strongest at this location, which can blow away some of the inner layer of adsorbent material previously loaded at this location. Therefore, after loading is completed, the catalytic adsorbent material at this location on the inner wall of the adsorption cylinder is relatively thin, which can naturally form a weak area for gas to pass through. Of course, in practice, if the adsorption cylinder is formed by 3D printing, the catalytic adsorbent material can also be loaded using the above-mentioned processing equipment after forming.

[0075] The pressing plate 13 is mounted on the central tube 12 by screw thread connection.

[0076] In this way, the pressure plate can be easily loaded and unloaded to realize the installation of the adsorption cylinder.

[0077] A positioning cone 24 is provided upwardly on the inner bottom surface of the shell at the lower end of the central tube 12 .

[0078] This makes it easy to position and install the lower end of the adsorption cylinder.

[0079] A sealing ring 26 is provided at the upper end of the central tube 12 .

[0080] In this way, the end cover can be easily closed, and the upper air pipe and the central pipe can be sealed and connected without air leakage.

[0081] One end of the end cover 15 is hinged to the housing 11 , and a locking device is provided between the other end and the housing.

[0082] This makes it easier to open and lock the end cover.

[0083] The central tube air holes 14 and the shell air holes 22 are evenly distributed in the circumferential direction and arranged in layers in the height direction.

[0084] In this way, the loading of the catalytic adsorption material can be completed more evenly.

[0085] Therefore, the above-mentioned adsorption cylinder catalytic adsorption material loading processing equipment can efficiently, quickly, stably and evenly complete the loading of catalytic adsorption material on the adsorption cylinder.

Claims

1. A gas catalytic adsorption purification and filtration method, which drives the gas to be treated to flow in a flow channel and react with the catalytic adsorption purification material to achieve purification treatment, characterized in that: The gas to be processed is driven to pass through a purification channel with a cross section that gradually decreases along the forward direction, and is contacted and reacted with the catalytic adsorption purification material arranged on the inner wall of the purification channel to achieve purification treatment.

2. The gas catalytic adsorption purification filtration method according to claim 1, characterized in that: This method is implemented by relying on an adsorption device, which includes an air flow channel, one end of the air flow channel is an air inlet end, and the other end is an air outlet end, the air inlet end or the air outlet end is provided with a fan, an adsorption bed is provided in the air flow channel, the adsorption bed includes a partition arranged along the cross section of the air flow channel, the partition is evenly arranged with a plurality of air holes, the partition is located on one side of the air inlet direction and a cylindrical adsorption cylinder is fixed vertically outwardly around each air hole, the adsorption cylinder is sealed at one end away from the partition, a plurality of purification flow channels with gradually smaller cross-sections are evenly distributed on the outer peripheral wall of the adsorption cylinder, and a layer of catalytic adsorption material is provided on the inner wall of the purification flow channel.

3. The gas catalytic adsorption purification filtration method according to claim 2, characterized in that: The innermost end of the purification flow channel is communicated with the inner cavity of the adsorption tube through a porous structure loaded with catalytic adsorption material.

4. The gas catalytic adsorption purification filtration method according to claim 2, characterized in that: The purification flow channel is arranged to extend inwardly in a spiral shape along the circumferential direction of the adsorption tube; The purification flow channel is arranged as a whole to be inclined from top to bottom.

5. The gas catalytic adsorption purification filtration method according to claim 2, characterized in that: The adsorption cylinder is made of porous material and is loaded with a portion of adsorption and purification material; A catalytic adsorption material layer is provided on the inner and outer sides of the adsorption tube, and the catalytic adsorption material layer on the inner side of the adsorption tube has a weak area for gas to pass through at a position corresponding to the inner end of the purification flow channel.

6. The gas catalytic adsorption purification filtration method according to claim 2, characterized in that: The purification flow channels are evenly distributed in rows in the circumferential direction, and the cross section of the purification flow channels is in the shape of a vertical rectangle.

7. The gas catalytic adsorption purification filtration method according to claim 2, characterized in that: The adsorption cylinder is designed to be layered along the axial direction, and the layered surface is a conical ring shape. The purification flow channel is designed on the layered surfaces of the upper and lower layers.

8. The gas catalytic adsorption purification filtration method according to claim 7, characterized in that: The adsorption cylinder is manufactured using the following production method: a. first, each layer of the adsorption cylinder is produced separately; b. after the layers of the adsorption cylinder are docked and assembled into a cylinder 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 flow channel is completed.

9. The gas catalytic adsorption purification filtration method according to claim 7, characterized in that: In step a, the production of each layer of the adsorption cylinder is completed by mold forming; In step b, the catalytic adsorption material is prepared into particles, the maximum pore size of the material pores of the adsorption tube is within the particle size range of the catalytic adsorption material particles, and the catalytic adsorption material particles are used to rely on the binder under negative pressure to achieve the loading of the catalytic adsorption material.

10. The gas catalytic adsorption purification filtration method according to claim 8, characterized in that: The step b is realized by an adsorption tube catalytic adsorption material loading processing equipment, which includes an outer shell that is cylindrical in shape as a whole and has a depth greater than the height of the adsorption tube. The inner diameter of the outer shell is greater than the outer diameter of the adsorption tube and a central tube is fixed vertically at the axial position. A pressing plate is provided at the upper end of the central tube corresponding to the height position of the adsorption tube. The pressing plate and the upper end of the adsorption tube match in shape and are used to realize the crimping and fixing of the adsorption tube. A central tube air hole is opened on the central tube, and an end cover is also provided corresponding to the upper port of the outer shell. An upper air pipe is connected upwardly in the middle of the end cover. The lower end of the upper air pipe passes through the end cover and is connected to the central pipe after the end cover is closed. The upper air pipe is provided with an upper fan. The upper air pipe between the upper fan and the end cover is also connected to an upper feeding pipe with a switch valve, and the upper feeding pipe is connected to an upper feeding box; the outer shell is provided with a hollow interlayer and is connected to the outside with a lower air pipe, the lower air pipe is provided with a lower fan, and the lower air pipe between the lower fan and the outer shell is also connected to a lower feeding pipe with a switch valve, the lower feeding pipe is connected to a lower feeding box, and the inner wall of the outer shell is provided with an outer shell air hole connected to the hollow interlayer; An atomizing nozzle is also provided on the outer wall of the central tube and the inner wall of the shell, and the atomizing nozzle is connected to an external loading agent source through a spray pipe; The pressure plate is installed on the center tube by screw connection; A positioning cone is provided upward on the inner bottom surface of the shell at the lower end of the central tube; A sealing ring is provided at the upper end of the central tube; One end of the end cover is hinged to the housing, and a locking device is provided between the other end and the housing; The central tube air holes and the shell air holes are evenly distributed in the circumferential direction and arranged in layers in the height direction.

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