A continuous adsorption-desorption treatment device for organic waste gas

Abstract

This invention discloses a continuous adsorption-desorption treatment device for organic waste gas, relating to the field of environmental engineering construction technology. It includes: a support, on which multiple alternating treatment modules for treating organic waste gas are mounted; each treatment module includes: a treatment cylinder fixed to the support, an inner cylinder fixed inside the treatment cylinder, a main support mesh and multiple secondary support meshes fixed inside the inner cylinder, the main support mesh being located below all the secondary support meshes, and an activated carbon layer placed on the upper side of both the main and secondary support meshes, with gaps between the secondary support meshes and the activated carbon layer below them; and arc-shaped through holes at positions corresponding to these gaps on the inner cylinder. This invention utilizes the arc-shaped through holes to provide an additional flow path for the desorbed gas, allowing it to directly pass over the already desorbed activated carbon, reducing heat exchange between the desorbed gas and the desorbed activated carbon, thereby reducing heat loss and improving desorption efficiency.

Description

Technical Field

[0001] This invention relates to the field of environmental engineering construction technology, and in particular to a continuous adsorption-desorption treatment device for organic waste gas. Background Technology

[0002] Environmental engineering refers to a series of engineering projects implemented to protect the environment. With the environmental pollution problems brought about by industrial development, environmental engineering, based on specific objectives, applies relevant scientific knowledge and technical means to address these issues through organized engineering activities. Among these, adsorption-desorption treatment devices are commonly used to treat industrial organic waste gases. In actual use, multiple sets of adsorption-desorption treatment devices work alternately to achieve continuous treatment of organic waste gases. The adsorption-desorption treatment device enriches volatile organic compounds (VOCs) using adsorbents (such as activated carbon), and then achieves activated carbon regeneration and pollutant concentration through heating or depressurization desorption. In the adsorption stage, the direction of organic waste gas flow affects the activated carbon, causing the VOC concentration to decrease linearly in that direction. However, in the desorption stage, to reduce the risk of secondary VOC adsorption, the desorption medium is usually flowed in the opposite direction to the organic waste gas flow in the adsorption stage. In this way, the clean desorption medium first comes into contact with the side of the activated carbon with the lower VOC concentration, resulting in a situation where one side of the activated carbon is completely desorbed but the other side is not. In this case, the desorption medium continues to flow through the already desorbed area, which not only causes ineffective heat exchange and energy loss, but may also cause local overheating, affecting the lifespan of the activated carbon, and reducing the desorption efficiency. Summary of the Invention

[0003] This invention provides a continuous adsorption-desorption treatment device for organic waste gas, which overcomes the shortcomings of existing adsorption-desorption treatment devices, such as ineffective heat exchange and low desorption efficiency during the desorption stage.

[0004] Technical Solution: A continuous adsorption-desorption treatment device for organic waste gas includes: a support, on which multiple alternating treatment modules for treating organic waste gas are arranged; each treatment module includes: a treatment cylinder, which is fixedly connected to the support, an inner cylinder is fixedly connected inside the treatment cylinder, a main support mesh and multiple secondary support meshes are fixedly connected inside the inner cylinder, the main support mesh is located below all the secondary support meshes, and an activated carbon layer is placed on the upper side of both the main support mesh and the secondary support meshes, and there is a gap between the secondary support meshes and the activated carbon layer below them; arc-shaped through holes are provided at positions corresponding to the gaps in the inner cylinder; multiple control rings are slidably connected to the outer side of the inner cylinder, the number of control rings being equal to the number of arc-shaped through holes and used to block adjacent arc-shaped through holes; and a control component is provided on the support for controlling the connection state of the arc-shaped through holes.

[0005] Furthermore, both the processing cylinder and the inner cylinder are coated with a heat-insulating coating to reduce heat loss.

[0006] Furthermore, a spring is fixedly connected between the lower side of the control ring and the inner cylinder, and two symmetrically distributed control magnets are fixedly connected to the control ring. Corresponding slots are provided above all adjacent control magnet positions on the processing cylinder. The control assembly includes: two symmetrically distributed electric slide rails, both fixedly connected to the support, an electric slider on the electric slide rail, a mounting rod fixedly connected to the electric slider of the electric slide rail, and multiple electromagnets fixedly connected to the mounting rod. The number of all electromagnets corresponding to a single mounting rod is half the number of all corresponding slots on a single processing cylinder. The electromagnets control the position of the control magnets through magnetic repulsion.

[0007] Furthermore, a foam ring is fixed between the upper side of the control ring and the adjacent inner cylinder, and the foam ring is used to block the adjacent arc-shaped through hole.

[0008] Furthermore, an inner support mesh is fixed to the upper side of the control ring. The inner support mesh contacts the inner side of the adjacent foam ring and is used to provide support for the adjacent foam ring. A plurality of outer binding rings are fixed to the outer side of the foam ring, and the outer binding rings are used to restrict the shape of the foam ring.

[0009] Furthermore, within a single inner cylinder, a constant-flow foam pad is provided on the upper side of all activated carbon layers except the uppermost activated carbon layer. An mounting ring is provided on the upper side of each constant-flow foam pad, and a protrusion is rotatably connected to the edge of the mounting ring. A hook portion is provided on the upper part of the inner support mesh, and the hook portion is used to drive the mounting ring downwards via the protrusion of the mounting ring. An elastic wire mesh is fixedly connected to the inner side of the mounting ring. A limiting ring is fixedly connected to the secondary support mesh via a connecting rod. The elastic wire mesh passes through adjacent limiting rings, and the limiting rings are fixedly connected to and coaxial with adjacent constant-flow foam pads.

[0010] Furthermore, a sealing cylinder is provided between the outer side of the activated carbon layer and the adjacent inner cylinder, the sealing cylinder being used to seal the gap between the activated carbon layer and the adjacent inner cylinder.

[0011] Furthermore, the sealing cylinder is made of silicone rubber, which allows it to expand when heated and improve the sealing between the activated carbon layer and the adjacent inner cylinder.

[0012] Furthermore, the main support net is fixedly connected to a slow-flow foam pad, and an extrusion net is fixedly connected to the middle of the lower side of the slow-flow foam pad. The edge of the extrusion net is provided with ring-shaped support legs, which are used to support the extrusion net and maintain the relative position of the extrusion net and the adjacent slow-flow foam pad.

[0013] Furthermore, the extrusion mesh is connected to the adjacent support leg by an elastic sheet, and a ring-shaped limiting strip is fixed to the lower side inside the processing cylinder. The number of limiting strips is equal to that of the support leg, and the limiting strip contacts the adjacent support leg and is used to limit the position of the adjacent support leg.

[0014] Compared with the prior art, the present invention has the following advantages: The present invention relies on the arc-shaped through hole to provide an additional flow path for the desorbed gas, so that the desorbed gas can directly pass over the activated carbon that has been desorbed, reducing the heat exchange between the desorbed gas and the desorbed activated carbon, thereby reducing heat loss and improving desorption efficiency.

[0015] By controlling the shape of the foam ring, the shape of the internal flow channel of the foam ring is changed, thereby changing the flow resistance encountered by the gas when passing through the foam ring. This allows two streams of desorbed gas to flow in parallel into the treatment cylinder. After one stream of desorbed gas passes through a single set of activated carbon, another stream of clean desorbed gas is added to the VOCs-containing desorbed gas, reducing the concentration of VOCs in the desorbed gas and thus reducing the probability of secondary adsorption of VOCs.

[0016] By relying on the fixing ring to the middle of the constant flow foam pad and the squeezing of the peripheral edge of the constant flow foam pad by the mounting ring, the constant flow foam pad is compressed and deformed from the edge. This causes the flow resistance of the constant flow foam pad to gradually increase from the middle to the peripheral direction, thereby improving the uniformity of the flow distribution of clean desorbed gas in the circumferential section when it flows in the adjacent activated carbon layer, which is beneficial to improving the desorption efficiency of the activated carbon layer. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the processing cylinder and electric slide rail of the present invention; Figure 3 This is a three-dimensional structural diagram of the inner cylinder and control ring of the present invention; Figure 4 This is a three-dimensional structural diagram of the foam ring and constant flow foam pad of the present invention; Figure 5 This is a three-dimensional structural diagram of the activated carbon and constant flow foam pad of the present invention; Figure 6 This is a three-dimensional structural diagram of the main support network and the secondary support network of the present invention; Figure 7 Appendix to this invention Figure 5 Enlarged view of point A in the middle; Figure 8 This is an exploded view of the secondary support net, mounting ring, and limiting ring of the present invention; Figure 9This is a three-dimensional structural cross-sectional view of the processing cylinder and inner cylinder of the present invention; Figure 10 This is a three-dimensional structural diagram of the extruded mesh and support legs of the present invention.

[0018] The markings in the diagram are as follows: 1-Support, 2-Processing cylinder, 3-Inner cylinder, 301-Arc-shaped through hole, 4-Main support mesh, 5-Secondary support mesh, 6-Activated carbon, 7-Control ring, 8-Spring, 9-Control magnet, 901-Corresponding groove, 10-Electric slide rail, 11-Mounting rod, 12-Electromagnet, 13-Foam ring, 14-Inner support mesh, 15-Outer binding ring, 16-Constant current foam pad, 17-Mounting ring, 171-Hook part, 18-Elastic wire mesh, 19-Limiting ring, 20-Sealing cylinder, 21-Slow flow foam pad, 22-Extrusion mesh, 23-Support leg, 24-Limiting strip. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0020] It should be noted that this article is appended. Figure 3 Let's take the perspective of the main view as an example for illustration.

[0021] Example 1 This embodiment provides a continuous adsorption-desorption treatment device for organic waste gas to reduce ineffective heat exchange during the desorption process and improve desorption efficiency.

[0022] See Figures 1 to 6A continuous adsorption-desorption treatment device for organic waste gas includes: a support 1, on which multiple alternating treatment modules for treating organic waste gas are mounted. The number of treatment modules is determined according to actual production conditions; three modules are used as an example here. Each treatment module includes: a treatment cylinder 2, fixed to the support 1. The upper part of the treatment cylinder 2 has an adsorption exhaust port and a desorption inlet, and the lower part has an adsorption inlet and a desorption exhaust port. The treatment cylinder 2 is an existing structure, and its connection to external equipment is not shown. An inner cylinder 3 is fixed to the lower part of the treatment cylinder 2. Both the surfaces of the treatment cylinder 2 and the inner cylinder 3 are coated with a heat-insulating coating to reduce heat loss. The outer surfaces of the treatment cylinder 2 and the inner cylinder 3 are... There are gaps between the sides for the flow of desorbed gas. Inside the inner cylinder 3, a main support net 4 and three secondary support nets 5 are fixedly connected from bottom to top. Activated carbon layers 6 are placed on the upper side of both the main support net 4 and the secondary support nets 5. The activated carbon layers 6 are cylindrical activated carbon composed of multiple small activated carbon blocks. Both the main support net 4 and the secondary support nets 5 are composed of rings and metal mesh. There are gaps between the secondary support nets 5 and the activated carbon layers 6 below them. Arc-shaped through holes 301 are provided at the positions corresponding to the gaps in the inner cylinder 3. Three control rings 7 are slidably connected to the outer side of the inner cylinder 3. The control rings 7 are used to block adjacent arc-shaped through holes 301. A regulating component is provided on the support 1 to control the connection state of the arc-shaped through holes 301.

[0023] The above setup enables the desorption gas to pass directly over the already desorbed activated carbon layer 6 by relying on the arc-shaped through hole 301 to provide an additional flow path, thereby reducing heat exchange between the desorption gas and the already desorbed activated carbon layer 6, thus reducing heat loss and improving desorption efficiency.

[0024] See Figures 1 to 5 A spring 8 is fixed between the lower side of the control ring 7 and the inner cylinder 3. Two control magnets 9 are fixed to the control ring 7 and are symmetrically distributed on the left and right. Both the processing cylinder 2 and the inner cylinder 3 are made of non-ferromagnetic material. Three corresponding grooves 901 are equidistantly distributed on the left and right sides of the processing cylinder 2. The three corresponding grooves 901 on one side of the processing cylinder 2 are staggered with the three control rings 7 inside the processing cylinder 2.

[0025] See Figure 1 and Figure 2 The control component includes two symmetrically distributed electric slide rails 10, both fixed to the support 1 and located on the left and right sides of the processing cylinder 2 respectively. Electric sliders are provided on the electric slide rails 10. The electric sliders of the electric slide rails 10 are fixed to the mounting rods 11. Three electromagnets 12 are fixed to the mounting rods 11 at equal intervals. The electromagnets 12 and the corresponding slots 901 are at the same horizontal height. The electromagnets 12 control the position of the magnets 9 by magnetic repulsion.

[0026] The adsorption process for treating waste gas is as follows: the waste gas to be treated enters the treatment cylinder 2 through the adsorption inlet and flows from bottom to top in the inner cylinder 3. During this process, VOCs in the waste gas are adsorbed on the surface of the activated carbon layer 6. The treated waste gas is then discharged through the adsorption outlet of the treatment cylinder 2 into the subsequent equipment, so that the concentration of VOCs in the four activated carbon layers 6 gradually increases from bottom to top. When treating waste gas, the three treatment modules operate alternately to ensure continuous production.

[0027] The desorption process of a single treatment module (the following description uses the middle treatment module as an example): The adsorption inlet and adsorption outlet of the treatment cylinder 2 are closed, while the desorption inlet and desorption outlet are open. The desorbed gas enters the treatment cylinder 2 from the desorption inlet and passes through the four sets of activated carbon layers 6 from top to bottom. Finally, the desorbed gas carrying the VOCs adsorbed by the activated carbon layers 6 is discharged from the desorption outlet of the treatment cylinder 2 and enters the subsequent equipment.

[0028] During the process of the desorbed gas passing through the four sets of activated carbon layers 6 in sequence, after a specified desorption time (this time is determined by a combination of factors such as the concentration of VOCs in the waste gas, the adsorption time of activated carbon, and the temperature of the desorbed gas), the uppermost activated carbon layer 6 completes desorption first. At this time, the two electric slide rails 10 are activated and control the movement of the two mounting rods 11, so that the two mounting rods 11 are respectively located on the left and right sides of the middle treatment cylinder 2 and then stop moving. In this state, the six electromagnets 12 are respectively located in the adjacent corresponding slots 901. The two upper electromagnets 12 are activated and push the two upper control magnets 9 downward by magnetic repulsion. The control magnet 9 drives the adjacent control ring 7 to move down and compress the adjacent spring 8, so that the control ring 7 releases the blockage of the upper arc-shaped through hole 301. Since the desorbed gas is affected by the flow resistance when passing through the activated carbon layer 6, after the upper arc-shaped through hole 301 is opened, the desorbed gas will directly enter the space between the two adjacent upper activated carbon layers 6 from the upper arc-shaped through hole 301 and continue to flow downward, so that the desorbed gas directly passes over the upper activated carbon layer 6 that has been desorbed. This reduces the heat exchange area between the desorbed gas and the upper activated carbon layer 6, thereby reducing ineffective heat loss and improving the desorption efficiency of the three sets of lower activated carbon layers 6.

[0029] After a specified desorption time, the upper second activated carbon layer 6 is completely desorbed. At this time, the two electromagnets 12 in the middle are activated and push the two control magnets 9 in the middle downward by magnetic repulsion, so that the control ring 7 in the middle releases the blockage of the arc-shaped through hole 301. In this way, the desorbed gas passes over the two sets of activated carbon layers 6 on the upper side and directly enters between the two adjacent activated carbon layers 6 in the middle, reducing the ineffective heat loss (referring to the heat loss caused by the heat exchange between the desorbed gas and the already completely desorbed activated carbon layer 6). The above steps are repeated until all four sets of activated carbon layers 6 are completely desorbed. At this time, the supply of desorbed gas is stopped and the power supply to the electromagnets 12 is stopped. The control ring 7 moves upward and resets under the elastic action of the adjacent spring 8. The control ring 7 re-blocks the adjacent arc-shaped through hole 301, thus completing the desorption process of the middle processing module.

[0030] Example 2 This embodiment, based on Example 1, reduces the probability of secondary adsorption of VOCs during the desorption process.

[0031] During desorption, the concentration difference between the desorbed gas (low VOCs concentration) and activated carbon layer 6 (high VOCs concentration), as well as the heat transfer from the desorbed gas to the VOCs, are mainly relied upon. This allows the VOCs molecules to gain sufficient kinetic energy to break the adsorption force between the VOCs molecules and the surface of activated carbon layer 6, thereby causing the VOCs molecules to detach from the surface of activated carbon layer 6 and be carried away by the desorbed gas flow. However, since the desorbed gas needs to pass through multiple sets of activated carbon layers 6 in sequence, the VOCs concentration in the desorbed gas gradually increases. In some cases, the VOCs concentration in the desorbed gas may be greater than the VOCs concentration on the surface of activated carbon layer 6. In this situation, the VOCs molecules in the desorbed gas will adhere to the surface of activated carbon layer 6, resulting in secondary adsorption.

[0032] See Figures 3 to 5 and Figure 7 A foam ring 13 is fixedly connected between the upper side of the control ring 7 and the adjacent inner cylinder 3. The foam ring 13 is used to block the adjacent arc-shaped through hole 301. The foam ring 13 is made of open-pore high-temperature resistant foam material. The spring 8 is a linear spring. Initially, the foam ring 13 is in a compressed state. When the control ring 7 moves down to the limit position, the foam ring 13 is in a relaxed state. In this state, the flow resistance of the foam ring 13 to the gas is negligible.

[0033] The above setup enables the control of the shape of the foam ring 13 to change the shape of the internal flow channel of the foam ring 13, thereby changing the flow resistance encountered by the gas when passing through the foam ring 13. This allows two streams of desorbed gas to flow in parallel into the treatment cylinder 2. After one stream of desorbed gas passes through the single set of activated carbon layers 6, another stream of clean desorbed gas is added to the stream of desorbed gas containing VOCs, reducing the concentration of VOCs in the desorbed gas and thus reducing the probability of secondary adsorption of VOCs.

[0034] See Figure 7 An inner support net 14 is fixed to the upper side of the control ring 7. The inner support net 14 contacts the inner side of the adjacent foam ring 13 and is used to provide support for the adjacent foam ring 13. A plurality of outer binding rings 15 are fixed to the outer side of the foam ring 13. The outer binding rings 15 are used to restrict the shape of the foam ring 13.

[0035] Desorption Process: Before desorption, the concentration of VOCs in each activated carbon layer 6 is determined based on factors such as the concentration of VOCs in the waste gas, the adsorption time of activated carbon layer 6, and the waste gas flow rate. It is also determined which activated carbon layer 6 will experience secondary adsorption (the following explanation will use the example of secondary adsorption occurring when the desorbed gas flows through the lower activated carbon layer 6). After desorption begins, the current of the two lower electromagnets 12 is controlled to control the magnetic repulsion between the electromagnets 12 and the adjacent control magnets 9, thereby controlling the position of the lower control ring 7. This allows the control ring 7 to release the blockage of the adjacent arc-shaped through-holes 301 (not necessarily completely releasing the blockage; it is only necessary to ensure that the concentration of VOCs in the desorbed gas is always lower than the concentration of VOCs in the lower activated carbon layer 6 during its flow). (The concentration of VOCs is sufficient), and the control ring 7 pulls the lower side of the foam ring 13 downward, increasing the axial length of the foam ring 13 and blocking the adjacent arc-shaped through hole 301. In this state, the foam ring 13 is not in a stretched state, so the foam ring 13 also has flow resistance to the gas. Since both the foam ring 13 and the activated carbon layer 6 have flow resistance to the desorbed gas, the clean desorbed gas will be divided into two parts. One part enters the inner cylinder 3 and flows from top to bottom, and the other part flows downward along the space between the inner cylinder 3 and the treatment cylinder 2, and enters the space between the two lower activated carbon layers 6 after passing through the lower foam ring 13. This mixes the clean desorbed gas with the desorbed gas after passing through the three activated carbon layers 6 in the middle and upper sides, reducing the VOCs concentration of the desorbed gas and thus reducing the probability of secondary adsorption.

[0036] After all three upper activated carbon layers 6 have been completely desorbed, the lower control ring 7 moves down again and finally reaches the limit position. At this time, the lower foam ring 13 unfolds into a relaxed state. The flow resistance of the foam ring 13 to the gas is negligible compared to the flow resistance of the activated carbon layer 6 to the gas. The steps of Example 1 are repeated in this way so that the desorbed gas can directly pass over the three upper activated carbon layers 6.

[0037] Example 3 This embodiment is a further optimization based on embodiment 2.

[0038] See Figures 4 to 8 Within a single inner cylinder 3, all activated carbon layers 6 except the topmost activated carbon layer 6 are provided with a constant flow foam pad 16 on their upper sides. The constant flow foam pad 16 is made of open-pore, high-temperature resistant foam material, and an mounting ring 17 is provided on the upper edge of the constant flow foam pad 16 (see...). Figure 7The mounting ring 17 is rotatably connected to three annularly distributed protrusions on its edge. The edges of the protrusions are coplanar with the outer surface of the inner cylinder 3. The state shown in the attached figure, where the protrusions are coplanar with the mounting ring 17, represents a limit state of the protrusions. Based on this limit state, the protrusions can swing upwards so that the maximum diameter of the projection of the mounting ring 17 and the protrusions on the horizontal plane is not greater than the inner diameter of the inner cylinder 3. This facilitates the movement of the mounting ring 17 within the inner cylinder 3 and its installation in the corresponding position. After the mounting ring 17 is installed in place, the protrusions of the mounting ring 17 are manually adjusted to a straight state, as shown in the attached figure. The upper part of the inner support mesh 14 is provided with three annularly distributed hooks 171. The hooks 171 are used to drive the mounting ring 17 downwards through the protrusions of the mounting ring 17. An elastic wire mesh 18 is fixedly connected to the inner side of the mounting ring 17. The lower side of the secondary support mesh 5 is fixedly connected to a limiting ring 19 via a connecting rod. The elastic wire mesh 18 passes through the adjacent limiting ring 19. The limiting ring 19 is fixedly connected to the adjacent constant flow foam pad 16 and is coaxial.

[0039] The above setup enables the constant flow foam pad 16 to be compressed and deformed from the edge by the limiting ring 19 fixing the middle part of the constant flow foam pad 16 and the mounting ring 17 squeezing the peripheral edge of the constant flow foam pad 16. This causes the constant flow foam pad 16 to gradually increase the flow resistance of the gas from the middle to the peripheral side, thereby improving the uniformity of the flow distribution of the clean desorbed gas in the circumferential cross section when it flows in the adjacent activated carbon layer 6, which is beneficial to improving the desorption efficiency of the activated carbon layer 6.

[0040] Example 4 This embodiment is a further optimization based on embodiment 3.

[0041] See Figure 6 A sealing cylinder 20 is provided between the outer side of the activated carbon layer 6 and the adjacent inner cylinder 3. The sealing cylinder 20 is used to seal the gap between the activated carbon layer 6 and the adjacent inner cylinder 3. The sealing cylinder 20 is made of silicone rubber and is used to expand when heated to improve the sealing between the activated carbon layer 6 and the adjacent inner cylinder 3.

[0042] Example 5 This embodiment is a further optimization based on embodiment 4, in order to improve the uniformity of the circumferential distribution of the exhaust gas as it passes through the activated carbon layer 6 during the adsorption process.

[0043] After the organic waste gas enters the treatment cylinder 2 along the pipeline, the initial velocity of the waste gas causes the flow distribution of the waste gas in the circumferential direction of the activated carbon layer 6 to be uneven. That is, the flow rate of the waste gas in the middle of the activated carbon layer 6 is greater than that at the edge of the activated carbon layer 6, resulting in uneven distribution of VOCs concentration in the activated carbon layer 6, which is not conducive to improving the desorption efficiency.

[0044] See Figure 4 , Figure 9 and Figure 10A slow-flow foam pad 21 is fixed to the inner circumference of the main support net 4 ring. The slow-flow foam pad 21 is made of open-pore high-temperature resistant foam. An extrusion net 22 is fixed to the middle of the lower side of the slow-flow foam pad 21. The outer diameter of the extrusion net 22 is equal to the inner diameter of the adsorption air inlet. The edge of the extrusion net 22 is connected to three ring-shaped support legs 23 by elastic sheets. The support legs 23 are used to support the extrusion net 22 and maintain the relative position of the extrusion net 22 and the adjacent slow-flow foam pad 21. Three ring-shaped limiting strips 24 are fixed to the lower side of the treatment cylinder 2. The upper side of the limiting strips 24 is provided with uniformly distributed grooves. The limiting strips 24 are made of magnetic material. The lower part of the support legs 23 is magnetic. The magnetic attraction between the support legs 23 and the limiting strips 24 and the limiting strips 24 limit the position of the support legs 23. The limiting strips 24 contact the adjacent support legs 23 and are used to limit the position of the adjacent support legs 23.

[0045] The above setup enables the slow-flow foam pad 21 to be compressed and deformed from the middle by the compression mesh 22 and the main support mesh 4 fixing the slow-flow foam pad 21 around the periphery. This changes the flow resistance of the slow-flow foam pad 21 to the gas at different circumferential positions, making the flow distribution of the exhaust gas on the circumferential cross section of the activated carbon layer 6 more uniform, reducing flow deviation, and improving desorption efficiency.

[0046] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A continuous adsorption-desorption treatment device for organic waste gas, characterized in that, include: Support (1), on which multiple alternating processing modules for treating organic waste gas are provided; The processing module includes: a processing cylinder (2), which is fixed to the support (1), an inner cylinder (3) is fixed inside the processing cylinder (2), a main support mesh (4) and multiple secondary support meshes (5) are fixed inside the inner cylinder (3), the main support mesh (4) is located below all the secondary support meshes (5), and an activated carbon layer (6) is placed on the upper side of both the main support mesh (4) and the secondary support meshes (5), there is a gap between the secondary support meshes (5) and the activated carbon layer (6) below them, and an arc-shaped through hole (301) is provided at the position corresponding to the gap in the inner cylinder (3), and multiple control rings (7) are slidably connected to the outer side of the inner cylinder (3), the number of control rings (7) is equal to the number of arc-shaped through holes (301) and is used to block adjacent arc-shaped through holes (301), and a control component for controlling the connection state of the arc-shaped through holes (301) is provided on the support (1); A spring (8) is fixed between the lower side of the control ring (7) and the inner cylinder (3). Two control magnets (9) are fixedly connected to the control ring (7) and are symmetrically distributed. Corresponding slots (901) are provided above the positions of all adjacent control magnets (9) of the processing cylinder (2). The control assembly includes: Two symmetrically distributed electric slide rails (10) are fixed to the support (1). Electric sliders are provided on the electric slide rails (10). The electric sliders of the electric slide rails (10) are fixed to the mounting rods (11). Multiple electromagnets (12) are fixed to the mounting rods (11). The number of all the electromagnets (12) corresponding to a single mounting rod (11) is half the number of all the corresponding slots (901) on a single processing cylinder (2). The electromagnets (12) control the position of the control magnet (9) through magnetic repulsion. A foam ring (13) is fixed between the upper side of the control ring (7) and the adjacent inner cylinder (3), and the foam ring (13) is used to block the adjacent arc-shaped through hole (301). An inner support mesh (14) is fixed to the upper side of the control ring (7). The inner support mesh (14) contacts the inner side of the adjacent foam ring (13) and is used to provide support for the adjacent foam ring (13). A plurality of outer binding rings (15) are fixed to the outer side of the foam ring (13). The outer binding rings (15) are used to restrict the shape of the foam ring (13).

2. A continuous adsorption and desorption treatment apparatus for organic exhaust gas according to claim 1, wherein The surfaces of both the processing cylinder (2) and the inner cylinder (3) are coated with a heat-insulating coating to reduce heat loss.

3. The continuous adsorption and desorption treatment apparatus for organic exhaust gas according to claim 1, wherein the adsorption and desorption treatment apparatus is provided with a plurality of the adsorption and desorption treatment units, and the plurality of the adsorption and desorption treatment units are connected in series. In a single inner cylinder (3), all activated carbon layers (6) except the uppermost activated carbon layer (6) are provided with constant flow foam pads (16) on their upper sides. The upper side of the constant flow foam pads (16) is provided with mounting rings (17). The edge of the mounting rings (17) is connected to a protrusion for limiting rotation. The upper part of the inner support mesh (14) is provided with a hook part (171). The hook part (171) is used to drive the mounting rings (17) to move downward through the protrusions of the mounting rings (17). The inner side of the mounting rings (17) is fixed with an elastic wire mesh (18). The secondary support mesh (5) is fixed with a limiting ring (19) through a connecting rod. The elastic wire mesh (18) passes through the adjacent limiting rings (19). The limiting rings (19) are fixed with the adjacent constant flow foam pads (16) and are coaxial.

4. A continuous adsorption-desorption treatment device for organic waste gas according to claim 3, characterized in that, A sealing cylinder (20) is provided between the outer side of the activated carbon layer (6) and the adjacent inner cylinder (3), and the sealing cylinder (20) is used to seal the gap between the activated carbon layer (6) and the adjacent inner cylinder (3).

5. A continuous adsorption-desorption treatment device for organic waste gas according to claim 4, characterized in that, The sealing cylinder (20) is made of silicone rubber and is designed to expand when heated to improve the sealing between the activated carbon layer (6) and the adjacent inner cylinder (3).

6. A continuous adsorption-desorption treatment device for organic waste gas according to claim 1, characterized in that, The main support net (4) is fixedly connected to a slow-flow foam pad (21). An extrusion net (22) is fixedly connected to the middle of the lower side of the slow-flow foam pad (21). The edge of the extrusion net (22) is provided with ring-shaped support legs (23). The support legs (23) are used to support the extrusion net (22) and maintain the relative position of the extrusion net (22) and the adjacent slow-flow foam pad (21).

7. A continuous adsorption-desorption treatment device for organic waste gas according to claim 6, characterized in that, The extrusion mesh (22) is connected to the adjacent support leg (23) by an elastic sheet. A ring-shaped limiting strip (24) is fixed to the lower side inside the processing cylinder (2). The number of limiting strips (24) is equal to that of the support leg (23). The limiting strip (24) contacts the adjacent support leg (23) and is used to limit the position of the adjacent support leg (23).

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