Rotary adsorption recovery system

Abstract

The invention discloses a rotary adsorption recovery system, and belongs to the technical field of waste gas treatment. A plurality of channel units for gas circulation are arranged on a rotating wheel; the first circulation loop unit is communicated with the at least two channel units, so that inert gas flows through one part of corresponding channel units to be subjected to purging treatment and flows through the other part of corresponding channel units to be subjected to cooling treatment; the second circulation loop unit is communicated with at least one channel unit, so that inert gas flows through the corresponding channel unit for desorption treatment; the waste gas pipeline is communicated with at least one channel unit, so that waste gas flows through the corresponding channel unit for adsorption treatment; the separation and recovery unit is used for separating and recovering the organic solvent condensed and recovered by the second circulation loop unit; the inert gas supplementing unit supplements inert gas to the first circulation loop unit and the second circulation loop unit according to the oxygen concentration value in the system. The waste gas treatment effect can be improved, the organic solvent is recycled, and the energy consumption of the system is reduced.

Description

Technical Field

[0001] This invention relates to the field of waste gas treatment technology, and in particular to a rotary adsorption recovery system. Background Technology

[0002] Currently, fixed-bed adsorption recovery technology is widely used in waste gas adsorption and recovery treatment. However, it has disadvantages such as long desorption time and high energy consumption, and the utilization rate of fixed beds is low when the waste gas concentration is low. To solve this problem, rotary adsorption recovery technology has emerged.

[0003] A rotary adsorption impeller is currently in use. As the impeller rotates continuously, it alternately performs adsorption, desorption, and cooling processes. After completing the desorption process at the desorption station, the impeller continues to perform adsorption at subsequent stations, reducing the effectiveness of waste gas treatment.

[0004] The information disclosed in this background section is only intended to enhance the understanding of the background technology of this application, and therefore may include prior art that is not known to those skilled in the art. Summary of the Invention

[0005] In response to the problems mentioned in the background art, this invention proposes a rotary adsorption and recovery system to improve the waste gas treatment effect and reduce system energy consumption.

[0006] To achieve the above-mentioned objectives, the present invention employs the following technical solution:

[0007] In some embodiments of this application, a rotary adsorption recovery system is provided, comprising:

[0008] A rotating wheel, wherein multiple channel units for gas flow are provided on the rotating wheel, and the multiple channel units are distributed around the axis of the rotating wheel;

[0009] A first circulation loop unit is connected to at least two of the channel units, and the first circulation loop unit is configured such that inert gas flows through a corresponding portion of the channel units for purging and flows through a corresponding other portion of the channel units for cooling.

[0010] A second circulation loop unit is connected to at least one of the channel units, and the second circulation loop unit is configured such that inert gas flows through the corresponding channel unit for desorption treatment;

[0011] An exhaust gas pipeline is connected to at least one of the channel units, and the exhaust gas pipeline is configured to allow exhaust gas to flow through the corresponding channel unit for adsorption treatment.

[0012] A separation and recovery unit is connected to the second circulation loop unit, and the separation and recovery unit is configured to separate and recover the organic solvents condensed and recovered by the second circulation loop unit.

[0013] An inert gas replenishment unit is configured to replenish inert gas to the first circulation loop unit according to the oxygen concentration value in the first circulation loop unit, and the inert gas replenishment unit is also configured to replenish inert gas to the second circulation loop unit according to the oxygen concentration value in the second circulation loop unit.

[0014] In some embodiments of this application, the channel unit connected to the second loop unit is a desorption channel unit;

[0015] The second loop unit includes:

[0016] The second circulation pipeline I is connected to the outlet of the desorption channel unit. A cooling unit is provided on the second circulation pipeline I, and the cooling unit is configured to cool the gas in the second circulation pipeline I.

[0017] The second circulation pipeline II is connected to the inlet of the desorption channel unit. A heating unit is provided on the second circulation pipeline II, and the heating unit is configured to heat the gas in the second circulation pipeline II.

[0018] The second circulation pipeline III is connected between the cooling unit and the heating unit.

[0019] In some embodiments of this application, a portion of the at least two channel units connected to the first circulation loop unit is a cooling channel unit, and the other portion is a purging channel unit;

[0020] The first circulation loop unit includes a first circulation pipe I and a first circulation pipe II. The first circulation pipe I is connected between the outlet of the purge channel unit and the inlet of the cooling channel unit, and the first circulation pipe II is connected between the inlet of the purge channel unit and the outlet of the cooling channel unit.

[0021] The adsorption and recovery system further includes a first heat exchange device, which is configured to exchange heat between the first circulation pipeline II and the second circulation pipeline II, so as to reduce the gas temperature flowing into the purge channel unit through the first circulation pipeline II and increase the gas temperature flowing into the desorption channel unit through the second circulation pipeline II.

[0022] In some embodiments of this application, the adsorption recovery system further includes a second heat exchange device, which is configured to exchange heat between the second circulation pipeline I and the second circulation pipeline II to reduce the gas temperature in the second circulation pipeline I and increase the gas temperature in the first circulation pipeline II.

[0023] In some embodiments of this application, the first heat exchange device is disposed upstream of the second heat exchange device along the gas flow direction within the second circulation pipeline II.

[0024] In some embodiments of this application, the cooling unit includes a condenser and a gas-liquid separator. Along the gas flow direction in the second circulation pipeline I, the condenser is located downstream of the second heat exchange device, and the gas-liquid separator is located downstream of the condenser. The second circulation pipeline III connects the gas outlet of the gas-liquid separator and the first heat exchange device.

[0025] In some embodiments of this application, the second circulation loop unit further includes a bypass pipe, which is connected between the second circulation pipe I and the second circulation pipe II, and the junction of the bypass pipe and the second circulation pipe II is located upstream of the heater along the gas flow direction.

[0026] In some embodiments of this application, the separation and recycling unit includes:

[0027] An evaporator is configured to evaporate and vaporize the flowing organic solvent;

[0028] A supergravity distillation bed, wherein the gas inlet of the supergravity distillation bed is connected to the gas outlet of the evaporator via a pipeline, and the liquid outlet of the supergravity distillation bed is connected to the first liquid inlet of the evaporator via a pipeline;

[0029] The circulation pipeline is connected at one end to the gas outlet of the supergravity distillation bed and at the other end to the reflux port of the supergravity distillation bed. A first condenser is installed on the circulation pipeline.

[0030] A membrane module is connected to the gas outlet of the supergravity distillation bed via a first pipeline. The membrane module is configured to dehydrate the flowing solvent to obtain the finished organic solvent.

[0031] The feed pipe assembly is configured to deliver recycled waste liquid to the evaporator or the high-gravity distillation bed.

[0032] In some embodiments of this application, the feed pipe assembly includes a first feed pipe, which is connected to the second liquid inlet of the evaporator, and a first control valve is provided on the first feed pipe.

[0033] The feed pipe assembly includes a second feed pipe, which is connected to the liquid inlet of the supergravity distillation bed, and a second control valve is provided on the second feed pipe.

[0034] In some embodiments of this application, the inert gas replenishment unit includes a first replenishment pipeline, a first replenishment control valve is provided on the first replenishment pipeline, the first replenishment pipeline is connected to the first circulation loop unit, and a first oxygen concentration meter is provided on the first circulation loop.

[0035] The inert gas replenishment unit includes a second replenishment pipeline, a second replenishment control valve is provided on the second replenishment pipeline, the second replenishment pipeline is connected to the second circulation loop unit, and a second oxygen concentration meter is provided on the second circulation loop.

[0036] Compared with the prior art, the advantages and positive effects of the present invention are:

[0037] This application utilizes inert gas to purge, desorb, and cool the rotor, thereby achieving cyclic desorption of the rotor and improving the waste gas treatment effect.

[0038] This application's rotary adsorption recovery system includes a rotor, a first circulation loop unit, and a second circulation loop unit. The first circulation loop unit is a circulation loop connected between the purge zone and the cooling zone. The low-temperature gas flowing out of the purge zone is used to further cool the cooling zone, achieving heat recovery and utilization. The second circulation loop unit is connected between the inlet and outlet of the working area of ​​the desorption station. Inert gas is used to circulate and desorb organic matter in the working area of ​​the rotor. The desorbed organic matter can be condensed and recovered, while the inert gas can circulate through the desorption zone to achieve cyclic desorption.

[0039] The exhaust gas from the desorption zone does not directly enter the cooling zone, ensuring the cooling efficiency of the cooling zone. Nitrogen is added to the purge zone to reduce the oxygen content of the exhaust gas in the system, improving the safety of the exhaust gas entering the desorption zone. The purge zone utilizes its own heat storage material to perform secondary heat storage on the exhaust gas at the heat exchanger outlet and exchanges heat with the desorption zone. Continuous rotation achieves the exchange of low-temperature and high-temperature heat, improving the overall thermal utilization rate of the system. Simultaneously, the exhaust gas from the purge zone, after heat exchange, does not require condensation equipment and can be directly used to cool the cooling zone.

[0040] This application uses a recovery and separation unit to separate and recover the organic solvent, achieving fully automated online real-time monitoring of the solvent's acid value. Based on a feedback mechanism, the system automatically optimizes operating parameters, thereby improving system operating efficiency.

[0041] This application uses an inert gas replenishment unit to automatically replenish the system with inert gas, and automatically adjusts the amount of inert gas replenishment according to the oxygen content in the system, thereby improving the waste gas treatment efficiency and system safety.

[0042] Other features and advantages of the present invention will become clearer after reading the detailed embodiments of the invention in conjunction with the accompanying drawings. Attached Figure Description

[0043] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0044] Figure 1 This is a schematic diagram of a rotating device according to some embodiments;

[0045] Figure 2 This is a schematic diagram of a gas flow structure according to some embodiments;

[0046] Figure 3 This is a schematic diagram illustrating the working principle of a rotary device according to some embodiments;

[0047] Figure 4 This is a schematic diagram of a first operating state of a first structure of a rotary device according to some embodiments;

[0048] Figure 5 This is a schematic diagram of the second working state of a first structure of the rotary device according to some embodiments;

[0049] Figure 6 This is a schematic diagram of the working state of a second structure of the rotary device according to some embodiments;

[0050] Figure 7 This is a schematic diagram of the working state of a third structure of the rotary device according to some embodiments;

[0051] Figure 8 This is a structural diagram of a rotary device according to some embodiments;

[0052] Figure 9 This is a structural diagram of a gas flow structure according to some embodiments;

[0053] Figure 10 This is a structural diagram of a gas flow structure and a thrust device according to some embodiments;

[0054] Figure 11 for Figure 10 The diagram shown is a structural diagram viewed from the Q direction.

[0055] Figure 12 for Figure 11Enlarged view of section A in the middle;

[0056] Figure 13 This is a structural diagram of a filter according to some embodiments;

[0057] Figure 14 This is a schematic diagram of a rotary adsorption recovery system according to some embodiments;

[0058] Figure 15 This is another schematic diagram of a rotary adsorption recovery system according to some embodiments;

[0059] Figure 16 This is another schematic diagram of a rotary adsorption recovery system according to some embodiments;

[0060] Figure 17 This is a schematic diagram of a separation and recycling unit according to some embodiments;

[0061] Figure 18 This is a schematic diagram of an inert gas replenishment unit according to some embodiments;

[0062] Figure 19 This is a schematic diagram of a waste liquid recycling system according to some embodiments. Detailed Implementation

[0063] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0064] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0065] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0066] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0067] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0068] The following disclosure provides many different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0069] In some embodiments of this application, a sealing device is provided that has a sliding sealing function on the end face of the impeller 9 and can operate continuously in a medium-low pressure environment of 30 kPa.

[0070] See Figure 1 This application discloses an end-face sliding sealing device 10 suitable for continuous adsorption-desorption switching. During normal operation of the system, an end-face sliding sealing device 10 is arranged on each side of the rotor 9, and they are symmetrical to each other.

[0071] With the assistance of the thrust device, the sliding sealing device moves from both sides to the middle. That is, the end face sliding sealing devices 10 on both sides of the rotating wheel 9 move simultaneously to the end face sliding sealing device 10 located between the two and squeeze the sealing end face of the rotating wheel 9. At this time, the rotating wheel 9 begins to rotate slowly.

[0072] During the rotation of the rotor 9, the sealing plate is in close contact with the rotor 9 to separate the exhaust gas and allow it to enter the three independent chambers of the end face sliding sealing device 10 located in the purging zone, desorption zone, and cooling zone, thereby achieving different functions such as adsorption, desorption, cooling, and purging.

[0073] See Figure 2 and Figure 3 In this embodiment, the end-face sliding sealing device 10 suitable for continuous adsorption-desorption switching includes a sector-shaped sealing body 1. The sector-shaped sealing body 1 includes three chambers arranged sequentially at intervals along the circumference of the sector-shaped sealing body 1. The inner wall of the chamber includes a bottom surface 2 and a vertical wall, both of which are provided with a heat insulation layer 3. Each of the three chambers opens on the side facing the rotor 9 to form a chamber inlet, and a chamber outlet is opened on the other side of the chamber inlet to connect to the chamber. Each chamber outlet is connected to a pipe for conveying gas.

[0074] The aforementioned circumferential direction refers to the circumferential direction of the circle in which the sector formed by the sector-shaped sealing body 1 lies. Of course, in some embodiments, the number of chambers does not necessarily have to be three; there can be two, four, or more, depending on the actual needs.

[0075] The three chambers are arranged in sequence at intervals. Specifically, there is a sealed dead zone between two adjacent chambers. The sealed dead zone is generally a solid or hollow structure sandwiched between two adjacent chambers.

[0076] When the sealing dead zone is a hollow structure, the sector-shaped sealing body 1 is actually a large chamber. This large chamber is divided into five independent chambers by four partitions. Three of these chambers are open chambers, and two of them are sealed chambers. The sealed chambers are the sealing dead zone in this embodiment.

[0077] It should be noted that, Figure 3 In the simplified diagram shown, the insulation zone refers to the sealed dead zone, and the front end of the insulation zone near the rotor is the sealing end face used to abut against the rotor. The exhaust gas treatment area refers to the chamber.

[0078] The sealing dead zone includes a first sealing end face 8, which is located between the chamber inlets of two adjacent chambers. In other words, the first sealing end face 8 faces the sealing end face of the rotating wheel 9. The first sealing end face 8 faces and can be pressed against the sealing end face of the rotating wheel 9 to form a surface seal between the chamber inlets of two adjacent chambers.

[0079] It should be noted that the width of the first sealing end face 8 cannot be less than a preset value, which can be set according to actual needs. This is mainly because after the first sealing end face 8 faces and can be pressed against the sealing end face of the rotating wheel 9, a surface-to-surface seal is formed between the two. If air leaks from one chamber into the adjacent chamber, it needs to penetrate at least the aforementioned preset value. In other words, the larger this preset value is, the lower the possibility of leakage. However, if this distance is too large, it will occupy too much space in the chamber and compress the volume of the chamber. Therefore, this preset value needs to be comprehensively considered to ensure both the sealing strength and the required chamber size.

[0080] Furthermore, the sector-shaped sealing body 1 also includes a second sealing end face 53, a first arc-shaped sealing end face 51, and a second arc-shaped sealing end face 52 surrounding the outer periphery of the sector-shaped sealing body 1. Specifically, a sealing substrate 5 is welded or integrally formed on the outer periphery of the sector-shaped sealing body 1, and one side surface of the sealing substrate 5 is located at the same horizontal plane as the first sealing end face 8.

[0081] In detail, the sealing substrate 5 mainly comprises four parts: two radial sealing substrates located at the two radial edges of the sector-shaped sealing body 1; an inner arc-shaped substrate located near the center of the sector-shaped sealing body 1; and an outer arc-shaped substrate located near the center of the sector-shaped sealing body 1 (outer arc). The radial sealing substrate, inner arc-shaped substrate, and outer arc-shaped substrate are arranged sequentially around the outer periphery of the sector-shaped sealing body 1 and each has a certain width. The purpose is to increase the sealing area of ​​the surface-to-surface contact seal and improve the sealing effect.

[0082] More specifically, the radial sealing substrate includes a second sealing end face 53 facing the sealing end face of the rotating wheel 9, the inner arc-shaped substrate includes a first arc-shaped sealing end face 51 facing the sealing end face of the rotating wheel 9, and the outer arc-shaped substrate includes a second arc-shaped sealing end face 52 facing the sealing end face of the rotating wheel 9. This forms a structure where a first sealing end face 8 and a second sealing end face 53, a first arc-shaped sealing end face 51 near its center, and a second arc-shaped sealing end face 52 away from its center are respectively provided on both sides of the width of the outermost chamber. The first sealing end face 8, the second sealing end face 53, the first arc-shaped sealing end face 51, and the second arc-shaped sealing end face 52 are all located on the same horizontal plane and can all press against and abut against the sealing end face of the rotating wheel 9 to form a surface-to-surface seal.

[0083] Furthermore, in order to improve the sealing effect of the face-to-face sealing structure, the end face sliding sealing device 10 also includes a buffer pad 7 and a sealing pad 6 made of polymer composite material.

[0084] The buffer pad 7 covers one side surface of the sealing substrate 5 (including the second sealing end face 53, the first arc-shaped sealing end face 51 and the second arc-shaped sealing end face 52) and the first sealing end face 8. The sealing pad 6 covers the buffer pad 7.

[0085] Of course, in some embodiments, the buffer pad 7 may not be provided, and the sealing pad 6 may be directly wrapped around one side surface of the sealing substrate 5 (including the second sealing end face 53, the first arc-shaped sealing end face 51 and the second arc-shaped sealing end face 52) and the first sealing end face 8. The sealing pad 6 is pressed against the sealing end face of the rotating wheel 9.

[0086] Furthermore, the outer edge of the sealing substrate 5 and the inner edge of the cavity inlet are provided with mounting grooves. The end face sliding sealing device 10 also includes a sealing strip 4, which has several through holes. Specifically, the outer edge of the fan-shaped sealing body 1 and the circumferential direction of the cavity inlet are provided with mounting grooves, and several threaded countersunk holes are provided in the mounting grooves. The edge of the sealing gasket 6 is embedded in the mounting groove, and the sealing strip 4 is positioned opposite to the mounting groove and pressed against the sealing gasket 6. The through holes and the threaded countersunk holes correspond one-to-one, so that the sealing strip 4 can be fixed on the mounting groove by a screw.

[0087] Furthermore, the thrust device is located on the side of the sector-shaped seal 1 facing away from the chamber inlet, which can press the sector-shaped seal 1 toward the sealing end face of the rotating wheel 9. In this embodiment, the free end of the thrust device is connected to the side of the sealing base plate 5 facing away from the chamber inlet.

[0088] In simple terms, the end-face sliding sealing device 10 of this embodiment, suitable for continuous adsorption-desorption switching, includes a sector-shaped sealing body 1, a sealing dead zone, a thrust device, and a sealing element. The sealing element is a sealing gasket 6 made of polymer composite material, which covers the end face of the dead zone and separates the sectors of different processing units of the end-face sliding sealing device 10. The sector-shaped sealing body 1 has a sealing groove, and the sealing gasket 6 is disposed in the sealing groove to isolate gas. The sealing base plate 5 has a mounting groove and a countersunk hole. The sealing gasket 6 is a sealing element made of polymer composite material, which covers the end face of the sealing dead zone and separates the sectors of different processing units. The sealing base plate 5 has a sealing groove on its edge, and the sealing gasket 6 is disposed in the sealing groove to isolate gas. It not only has an extremely low coefficient of friction and high wear resistance, but also directly contacts the end face of the rotating wheel 9 for sliding sealing, separating and collecting the gas in different stages and flowing into the cavity to the next process.

[0089] The thrust device is located on the back of the sector sealing substrate 5, and is equipped with a guide rail and a manual thread or cylinder to provide power to ensure the pressure value required for end face sealing.

[0090] A buffer pad 7 is provided between the sealing substrate and the sealing gasket 6, which can ensure the tight fit between the sealing surface and the end face during the sliding process, greatly improving the reliability of the seal.

[0091] The technical solution of this invention not only meets the sliding sealing requirements of the rotor 9 at this level, effectively solving the sealing problems of internal air leakage and high pressure in the rotor 9, but also achieves thermal insulation and isolation between different sector chambers, reducing the temperature influence between different chambers and achieving certain energy-saving benefits. The overall equipment is more compact, and through the continuous suction-desorption integrated circulation desorption process, the space area required for desorption is reduced, achieving a multi-fold reduction in public utility energy consumption. This greatly reduces the difficulty of enterprise promotion and the waste of resources.

[0092] In some embodiments of this application, an organic waste gas adsorption and desorption treatment device is provided, including a rotor 9 and end face sliding sealing devices 10 symmetrically arranged on opposite sides of the rotor 9.

[0093] In summary, the end-face sliding sealing device 10 for continuous adsorption-desorption switching provided in this application, during normal operation, allows a large amount of waste gas to enter the rotor 9. Due to the substrate and structure of the rotor 9, the interior of the rotor 9 is divided into many small channels. When the waste gas pressure rises to a certain level, the gas in the channels will pass through the substrate wall and flow into the other channels. Similarly, the waste gas and oxygen in the adsorption chamber will also flow to the desorption area simultaneously, resulting in an increase in the oxygen content inside the desorption area. At this time, the temperature and concentration of the waste gas inside the desorption area are also high, which may reach the lower explosive limit and combine with oxygen, thus posing a safety risk.

[0094] This device adds large-area sector sealing surfaces in different chambers, upgrading the traditional line-surface sealing to surface-surface sealing. Through improvements and treatments inside the rotor 9, the resistance of the substrate wall is increased, thereby controlling the range of exhaust gas dispersion. The panel design combines performance to correspond this dispersion range with the area of ​​the sealing substrate 5, ensuring that each sector is independent during rotation and that no external cavity penetrates it. This achieves individual isolation of different exhaust gas treatment areas, ensuring both oxygen concentration in high-concentration areas and exhaust gas concentration in emission areas, thus achieving safe and stable operation and compliance with emission standards for the entire device.

[0095] In some embodiments of this application, see [link to relevant documentation]. Figure 1 A honeycomb rotor is provided, comprising a rotor body and an air inlet structure and an air outlet structure disposed on opposite sides of the rotor body. The air inlet structure and the air outlet structure are the end face sliding sealing device 10 described above. The air inlet structure and the air outlet structure have the same structure.

[0096] The rotor body is made of fibrous material. The waste gas to be treated enters the rotor body through the inlet structure and is adsorbed. The treated waste gas then enters the outlet structure through the rotor body and is discharged.

[0097] Combination Figure 1 and Figure 4From the axial perspective of the rotor body, the rotor body is divided into multiple fan-shaped independent units 01 in the circumferential direction. A separating surface 05 formed by a separating material is provided between two adjacent independent units 01. The gas permeability of the separating material is less than 350 L / m. 2 / min / 1kPa.

[0098] The separating surface 05 includes one or a combination of the following: a separating plate located between two adjacent independent units 01; or a separating membrane located between two adjacent independent units 01; or an amorphous adhesive layer located between two adjacent independent units 01. The separating surface can prevent fluid (gas) diffusion between the independent units 01.

[0099] The air intake structure includes a fan-shaped air intake cavity 021 and a first fan-shaped isolation zone 031. Multiple fan-shaped air intake cavities 021 are provided, and a first fan-shaped isolation zone 031 is provided between two adjacent fan-shaped air intake cavities 021.

[0100] The air outlet structure includes a fan-shaped air outlet cavity 022 and a second fan-shaped isolation zone 032. Multiple fan-shaped air outlet cavities 022 are provided, and a second fan-shaped isolation zone 032 is provided between two adjacent fan-shaped air outlet cavities 022.

[0101] Multiple fan-shaped air intake chambers 021 and multiple fan-shaped air outlet chambers 022 are arranged one-to-one and mirror-symmetrically on both sides of the thickness of the rotor body. The first fan-shaped isolation area 031 and the second fan-shaped isolation area 032 are arranged one-to-one and mirror-symmetrically on both sides of the thickness of the rotor body.

[0102] It should be noted that the fan-shaped air inlet chamber 021 and the fan-shaped air outlet chamber 022 are equivalent to the chambers mentioned above, and the first fan-shaped isolation area 031 and the second fan-shaped isolation area 032 are equivalent to the first sealing end face 8 and the second sealing end face 53 mentioned above.

[0103] The angle of any sector-shaped isolation zone and the angle of any sector-shaped air intake chamber 021 are both greater than or equal to the angle of any independent unit 01. It can be seen that a first sector-shaped isolation zone 031 is provided between two adjacent sector-shaped air intake chambers 021, and the angle of any first sector-shaped isolation zone 031 is greater than or equal to the angle of any independent unit 01.

[0104] When the rotor is working, no single unit 01 can simultaneously connect any two adjacent fan-shaped air inlets 021 and two fan-shaped air outlets 022, thus ensuring that no fluid diffusion occurs between two adjacent fan-shaped air inlets 021, and ensuring that the concentration and pressure of the fluid in adjacent areas on the honeycomb rotor will not change significantly when there is a concentration and pressure difference.

[0105] Combination Figure 1In this embodiment, in order to reduce the processing difficulty, from the axial perspective of the wheel body, the angles of the fan-shaped areas where multiple independent units 01 are located are equal. That is, the wheel body is divided into multiple independent units 01 of the same size and shape in the circumferential direction, for example, 12.

[0106] Of course, in some embodiments, multiple independent units 01 can also be set to different angles, as long as the angle of any sector isolation zone and the angle of any sector air intake chamber 021 are greater than or equal to the angle of any independent unit 01.

[0107] From the axial perspective of the rotor body, the air intake and exhaust structures are fan-shaped. In the circumferential direction of the fan-shaped structure, the fan-shaped air intake chamber 021 and the first fan-shaped isolation zone 031 are alternately arranged, and the fan-shaped air exhaust chamber 022 and the second fan-shaped isolation zone 032 are alternately arranged.

[0108] Combination Figure 4 In this embodiment, the fan-shaped air inlet chamber 021, the fan-shaped air outlet chamber 022, the independent unit 01, the first fan-shaped isolation area 031, and the second fan-shaped isolation area 032 are all located in the same fan-shaped area with the same angle and size. As shown in the figure, when the fan-shaped air inlet chamber 021 is directly opposite the independent unit 01, the fan-shaped air outlet chamber 022, the first fan-shaped isolation area 031, and the second fan-shaped isolation area 032 are also directly opposite the independent unit 01; at this time, the fluid path 04 is as follows... Figure 4 As shown, the airflow enters an independent unit 01 from the fan-shaped air intake chamber 021 and then enters the opposite fan-shaped air outlet chamber 022. There is an independent unit 01 between the independent units 01 corresponding to the two adjacent fan-shaped air intake chambers 021. After the airflow from the two adjacent fan-shaped air intake chambers 021 enters the corresponding independent unit 01, there are two separating surfaces 05 and an independent unit 01 between the two independent units, which completely prevents the airflow from the two adjacent fan-shaped air intake chambers 021 from entering the independent unit 01 and causing air leakage.

[0109] Combination Figure 5 In this embodiment, the fan-shaped air inlet chamber 021, the fan-shaped air outlet chamber 022, the independent unit 01, the first fan-shaped isolation area 031, and the second fan-shaped isolation area 032 are all located in the same fan-shaped area with the same angle and size. As shown in the figure, when the fan-shaped air inlet chamber 021 faces two adjacent independent units 01, since the angle of the first fan-shaped isolation area 031 is equal to the angle of the independent unit 01, the first fan-shaped isolation area 031 must face two adjacent independent units 01. That is, the first fan-shaped isolation area 031 must correspond to a separating surface 05. After the gas from the two adjacent fan-shaped air inlets 021 enters the rotor body, due to the presence of the separating surface 05 corresponding to the first fan-shaped isolation area 031, the fluid path 04 is as follows... Figure 5As shown, the gas from two adjacent fan-shaped air intake chambers 021 cannot flow into the same independent unit 01 after entering the rotor body, so there is no gas leakage phenomenon.

[0110] Furthermore, in this embodiment, the angle of the sector where the independent unit 01 is located is 3° to 30°. The angle of the sector where the first sector isolation area 031 and the second sector isolation area 032 are located is 3° to 30°. The angle of the sector inlet chamber 021 and the sector outlet chamber 022 is 3° to 30°. Of course, in some embodiments, in order to improve fluid throughput, the angle of any sector inlet chamber 021 is greater than or equal to the angle of any independent unit 01.

[0111] Combination Figure 6 In some embodiments, multiple independent units 01 have equal angles, and the angles of independent unit 01, the first sector-shaped isolation zone 031, and the second sector-shaped isolation zone 032 are equal. The angles of the sector-shaped air inlet chamber 021 and the sector-shaped air outlet chamber 022 are equal and smaller than the angle of the independent unit 01. Since the angle of the first sector-shaped isolation zone 031 is equal to the angle of the independent unit 01, the first sector-shaped isolation zone 031 must be directly opposite two adjacent independent units 01. That is, the first sector-shaped isolation zone 031 must correspond to a partition surface 05. After the gas from two adjacent sector-shaped air inlets 021 enters the rotor body, due to the presence of the partition surface 05 corresponding to the first sector-shaped isolation zone 031, the fluid path 04 is as follows... Figure 6 As shown, the gas from two adjacent fan-shaped air intake chambers 021 cannot flow into the same independent unit 01 after entering the rotor body, so there is no gas leakage phenomenon.

[0112] Combination Figure 7 When the angle of the first sector isolation region 031 is less than the angle of the independent unit 01, the first sector isolation region 031 will be located between the two separating surfaces 05 of an independent unit 01 in a certain state, such as... Figure 7 As shown, at this time, the air intake from the fan-shaped air intake chambers 021 on both sides of the first fan-shaped isolation zone 031 will converge into the same independent unit 01, resulting in air leakage. Therefore, in order to prevent air leakage, the angle between the first fan-shaped isolation zone 031 and the second fan-shaped isolation zone 032 must be greater than or equal to the angle of the independent unit 01.

[0113] In some embodiments of this application, a method for processing a rotary wheel is provided, comprising:

[0114] 1. Taking the rotation direction of the honeycomb wheel as the plane, and the center of the honeycomb wheel in the plane as the origin, several straight lines with the same angle are radiated out in the plane. The angle is 3-30°. If the angle is too large, the utilization rate of the honeycomb material is low; if the angle is too small, the processing efficiency of the honeycomb wheel is low.

[0115] 2. A straight line forms a dividing surface in the direction perpendicular to the plane. The honeycomb rotor is divided into several identical and independent units 01 along the dividing surface. An isolation zone is set between the functional areas of the rotor used to transmit fluids of different concentrations and pressures. There is no fluid transmission in the honeycomb rotor within the isolation zone. The angle of the isolation zone is not less than the interval angle of the dividing surface. The angle of the isolation zone is 3-30°. When the angle of the isolation zone is less than the interval angle of the dividing surface, diffusion between independent units 01 cannot be isolated.

[0116] 3. The aforementioned independent units are separated by a separator material to prevent diffusion between units. The separator material can be a profile such as a plate, sheet, or film, or an amorphous adhesive, or one or more of these. The gas permeability of the separator material is less than 350 L / m. 2 When the gas permeability is high (e.g., / min / 1kPa), the insulation requirement cannot be met.

[0117] In some embodiments of this application, the end face sliding sealing device 10, the air inlet structure, and the air outlet structure described above are essentially the same structure, namely, the gas flow structure 200. Figure 8 This is a structural diagram of the rotor 9 and the gas flow structure 200. Figure 9 This is a structural diagram of a gas flow structure 200.

[0118] As mentioned above, refer to Figure 1 The rotating wheel 9 is provided with multiple channel units 91 for gas flow, which are the independent units 01 mentioned above. The multiple channel units 91 are distributed around the axis of the rotating wheel 9. From the axial view of the rotating wheel 9, the channel units 91 extend radially along the rotating wheel 9 and are fan-shaped.

[0119] Gas flow structures 200 are respectively provided on two opposite ends of the rotor 9, one of which serves as an air inlet and the other as an air outlet. Multiple chambers 210 for gas flow are provided within each gas flow structure 200, and these chambers 210 are connected to the channel unit 91. The two gas flow structures 200 are arranged in a one-to-one correspondence and mirror image symmetrical arrangement on opposite sides of the rotor 9, and the multiple chambers 210 within each gas flow structure 200 are also one-to-one correspondences and connected through the channel unit 91. Each chamber 210 includes two air outlets 211, one serving as a chamber outlet 213 and the other as a chamber inlet 212. The fan-shaped air inlet chamber 021 and fan-shaped air outlet chamber 022 mentioned above are chambers 210.

[0120] Specifically, refer to Figure 9The gas flow structure 200 includes a sealing body 240. The sealing body 240 is a hollow frame structure. Multiple chambers 210 for gas flow are formed inside the sealing body 240. Thermal insulation material is provided on the inner wall of the chambers 210 to facilitate heat preservation and prevent heat exchange between adjacent chambers 210.

[0121] For example, the interior of the sealed body 240 is divided into multiple isolated chambers 210 by partitions 220. Alternatively, two adjacent chambers 210 are isolated by a hollow sealed cavity, which, while isolating the chambers 210, also helps prevent heat exchange between adjacent chambers 210.

[0122] The gas flow structure 200 also includes a sealing end face. The sealing end face is located on the side of the sealing body 240 facing the rotor 9 and surrounds the air outlet 211 of the chamber 210. The sealing end face is configured to abut against the end face of the rotor 9 to form a surface seal. For example, refer to… Figure 9 In the gas flow structure 200 serving as an intake, the chamber outlet 213 faces the rotor 9, and a sealing end face surrounds the chamber outlet 213. Alternatively, in the gas flow structure 200 serving as an exhaust, the chamber inlet 212 faces the rotor 9, and a sealing end face surrounds the chamber inlet 212.

[0123] In the gas flow structure 200 of this application, a sealing end face is provided around the circumference of the air outlet 211 of the chamber facing the rotating wheel 9. The sealing end face abuts against the end face of the rotating wheel 9 to seal. By increasing the area of ​​the sealing end face, a surface seal is formed between the sealing end face and the rotating wheel 9, upgrading the traditional line-to-surface seal to a surface-to-surface seal. This ensures that each chamber 210 is independent during the rotation of the rotating wheel 9, and gas penetration between chambers 210 will not occur, thereby achieving individual isolation of different chambers 210.

[0124] In some embodiments of this application, reference is made to Figure 9 Corresponding to the fan-shaped structure of the channel unit 91, the chamber 210 also has a fan-shaped structure. The air outlet 211 of the chamber 210 is fan-shaped to communicate with the fan-shaped channel unit 91. The chamber 210 includes two opposing radial edges and two opposing circumferential arc edges.

[0125] The sealing end face includes a radial sealing end face 230, and a radial sealing end face 230 is respectively provided on the two opposite radial edges of the air outlet 211 of any chamber 210. The radial sealing end face 230 extends a certain area in the radial and circumferential directions along the rotor 9.

[0126] Along the axial direction of the rotating wheel 9, the projection of the radial sealing end face 230 overlaps the projection of any channel unit 91. The rotating wheel 9 rotates to... Figure 4 or Figure 5 or Figure 6 When the position is such that the projection of the radial sealing end face 230 can cover the projection of any channel unit 91, the wheel 9 in any working position will not be able to connect any two adjacent chambers 210 at the same time, thus ensuring that no gas diffusion can occur between the two adjacent chambers 210.

[0127] In some embodiments of this application, reference is made to Figure 8 and Figure 9 The sealing body 240 has a fan-shaped structure, and the fan-shaped structure in which the sealing body 240 is located is coaxial with the rotating wheel 9. The chamber 210 and the radial sealing end face 230 have fan-shaped structures, and multiple chambers 210 are arranged sequentially along the circumference of the sealing body 240. The rotating wheel 9 device includes a base frame 530, and the rotating wheel 9 is rotatably mounted on the base frame 530. The gas flow structure 200 is also mounted on the base frame 530.

[0128] The sector angle of the radial sealing end face 230 is not less than the sector angle of any channel unit 91. Thus, the rotating wheel 9 rotates to... Figure 4 or Figure 5 or Figure 6 When the position is such that the sector angle of the radial sealing end face 230 is not less than the sector angle of any channel unit 91, the rotor 9 in any working position cannot simultaneously connect two adjacent chambers 210 or chamber 210 with the external space, thereby ensuring that gas diffusion between two adjacent chambers 210 is avoided.

[0129] In some embodiments of this application, reference is made to Figure 9 The radial sealing end face 230 includes a first sealing end face 8, which is fan-shaped and located between the air outlets 211 of two adjacent chambers 210. The first sealing end face 8 extends from the inner circumferential arc-shaped edge of the chamber 210 to the outer circumferential arc-shaped edge. The first sealing end face 8 is configured to abut against the end face of the rotor 9 to form a surface seal, thereby preventing gas from flowing between the air outlets 211 of two adjacent chambers 210.

[0130] In other words, the first sealing end face 8 is positioned between the air vents 211 of two adjacent chambers 210, and the sector angle of the first sealing end face 8 is not less than the sector angle of any channel unit 91. Thus, the rotating wheel 9 rotates to... Figure 4 or Figure 5 or Figure 6 When the first sealing end face 8 is in a certain position, because the sector angle is not less than the sector angle of any channel unit 91, the rotor 9 is in a certain working position and no channel unit 91 can connect two adjacent chambers 210 at the same time, thereby ensuring that no gas diffusion can occur between two adjacent chambers 210.

[0131] In some embodiments of this application, reference is made to Figure 9 The radial sealing end face 230 also includes a second sealing end face 53, which is fan-shaped and located radially outward of the outer chamber 210. The second sealing end face 53 extends from the inner circumferential arcuate edge of the chamber 210 to the outer circumferential arcuate edge. The second sealing end face 53 is configured to abut against the end face of the rotor 9 to form a surface seal, thereby preventing gas from flowing between the vent 211 of the chamber 210 and the outer space.

[0132] In other words, second sealing end faces 53 are provided on the outer radial edges of the two outermost chambers 210, and the sector angle of the second sealing end faces 53 is not less than the sector angle of any channel unit 91. Thus, the rotating wheel 9 rotates to... Figure 4 or Figure 5 or Figure 6 When the position is such that the sector angle of the second sealing end face 53 is not less than the sector angle of any channel unit 91, the rotor 9 in any working position cannot simultaneously connect the chamber 210 and the external space adjacent to the chamber 210, thereby preventing gas from flowing between the air outlet 211 of the chamber 210 and the external space.

[0133] It should be noted here that the first sector-shaped isolation area 031 and the second sector-shaped isolation area 032 mentioned above are the radial sealing end face 230, that is, the first sealing end face 8 and the second sealing end face 53.

[0134] In some embodiments of this application, reference is made to Figure 9 The sealing end face includes two arc-shaped sealing end faces, one of which is disposed on the outer peripheral side of the sealing body 240 (denoted as the second arc-shaped sealing end face 52), and the other arc-shaped sealing end face is disposed on the inner peripheral side of the sealing body 240 (denoted as the first arc-shaped sealing end face 51). The arc-shaped sealing end faces are configured to abut against the end face of the rotating wheel 9 to form a surface seal.

[0135] The outermost chamber 210 has a first radial sealing end face 230, a first arc-shaped sealing end face 51, a second radial sealing end face 230 and a second arc-shaped sealing end face 52 arranged sequentially around the outer periphery of the air outlet 211 near the rotor 9.

[0136] The middle chamber 210 has a first radial sealing end face 230, a first arc-shaped sealing end face 51, a first radial sealing end face 230 and a second arc-shaped sealing end face 52 arranged sequentially around the outer periphery of the air outlet 211 near the rotor 9.

[0137] Thus, the outer periphery of the air outlet 211, which connects the chamber 210 and the channel unit 91 of the rotor 9, forms a surface-to-surface sealing structure, which improves the sealing effect between the gas flow structure 200 and the end side of the rotor 9, and prevents air leakage between two adjacent chambers 210, and also prevents air leakage between two adjacent channel units 91.

[0138] In some embodiments of this application, the sector angle of any chamber 210 is not less than the sector angle of any channel unit 91. In this way, while ensuring that gas leakage between two adjacent chambers 210 is avoided, it helps to increase the gas flow rate.

[0139] In some embodiments of this application, reference is made to Figure 2 The gas flow structure 200 also includes a sealing gasket 6, which covers the sealing end face facing the rotor 9 and is configured to seal against the end face of the rotor 9. For example, the sealing gasket 6 is a foamed silicone sheet.

[0140] The sealing effect between the gasket 6 and the end face of the rotor 9 is further improved by the sealing contact between the gas flow structure 200 and the rotor 9.

[0141] In some embodiments of this application, reference is made to Figure 2 The gas flow structure 200 also includes a buffer pad 7, which is disposed between the sealing end face and the sealing gasket 6. For example, the buffer pad 7 is a PTFE plate.

[0142] By adding a buffer pad 7, the buffering capacity and the amount of compression deformation are increased, which helps to further improve the sealing effect between the gas flow structure 200 and the impeller 9.

[0143] In some embodiments of this application, reference is made to Figure 10 and Figure 11 The rotor 9 device also includes a thrust device configured to apply force to the gas flow structure 200 so that the sealing end face seals against the end face of the rotor 9.

[0144] In other words, the thrust device applies a force to the gas flow structure 200, causing the gas flow structure 200 to move closer to the rotor 9, thereby enabling the gas flow structure 200 to come into close contact with the end side of the rotor 9 to achieve a seal.

[0145] In some embodiments of this application, reference is made to Figure 10 The thrust device includes a first thrust device, which includes a drive unit 310, a force transmission mechanism, and a lead screw. The force transmission mechanism is configured to transmit the power of the drive unit 310 to the lead screw, and the lead screw is connected to the gas flow structure 200.

[0146] Specifically, the drive unit 310 is a motor, which transmits power to the lead screw through a force transmission mechanism. The lead screw rotates, causing the gas flow structure 200 to move toward or away from the end of the rotor 9.

[0147] In some embodiments of this application, reference is made to Figure 10 The force transmission mechanism includes a first steering gear 321, a second steering gear 322, a first elevator 323, a second elevator 324, a first transmission rod 325, and two second transmission rods 326. The first transmission rod 325 extends vertically, and the second transmission rods 326 extend horizontally.

[0148] The first transmission rod 325 connects the first steering gear 321 and the second steering gear 322. One second transmission rod 326 connects the first steering gear 321 and the first elevator 323. The other second transmission rod 326 connects the second steering gear 322 and the second elevator 324. The power shaft of the drive unit 310 is connected to the first steering gear 321. The first elevator 323 is connected to the first lead screw 331. The first lead screw 331 is connected to the top of the gas flow structure 200. The second elevator 324 is connected to the second lead screw 332. The second lead screw 332 is connected to the bottom of the gas flow structure 200.

[0149] The synchronous movement of the upper and lower lead screws is achieved by using a set of motors and force transmission mechanisms, thereby improving the motion reliability of the gas flow structure 200.

[0150] In some embodiments of this application, reference is made to Figure 11 The thrust device also includes a second thrust device, which includes a spring 410. A fixed frame 450 is provided on the side of the gas flow device, and the spring 410 is disposed between the fixed frame 450 and the gas flow device.

[0151] The spring 410 is configured to apply a force to the gas flow structure 200, causing the gas flow structure 200 to tend to move towards the rotating wheel 9, so that the gas flow structure 200 always remains in a sealed state against the end face of the rotating wheel 9, thereby improving the sealing effect.

[0152] In some embodiments of this application, reference is made to Figure 11 and Figure 12 A first fixed seat 420 is provided on the outer wall of the gas flow structure 200, an adjusting bolt 440 is provided on the fixed frame 450, a second fixed seat 430 is provided at the end of the adjusting bolt 440, and a spring 410 is provided between the first fixed seat 420 and the second fixed seat 430.

[0153] The mounting bracket 450 is fixedly installed, and the force exerted by the spring 410 on the gas flow structure 200 is adjusted by turning the adjusting bolt 440.

[0154] In some embodiments of this application, the rotary wheel 9 device further includes a pressure detection device configured to detect the clamping force of the gas flow structure 200. The pressure detection device uploads the pressure detection data to the control system, which adjusts the movement of the drive unit 310 based on the pressure data, so that the lead screw drives the gas flow structure 200 to a suitable position to always maintain a sealed state with the rotary wheel 9.

[0155] In some embodiments of this application, reference is made to Figure 8 The rotating wheel 9 device also includes a guide device, which includes a fixed guide part 510 and a movable guide part 520. The movable guide part 520 is disposed on the sealing body 240. The fixed guide part 510 and the movable guide part 520 are slidably connected. The movement direction of the movable guide part 520 is parallel to the axial direction of the rotating wheel 9.

[0156] In other words, when the gas flow structure 200 moves under the action of the thrust device, the movable guide part 520 moves along the fixed guide part 510. Through the sliding connection between the fixed guide part 510 and the movable guide part 520, the reliability and stability of the movement of the gas flow structure 200 are improved.

[0157] For example, the fixed guide part 510 is a fixed guide rail, and the movable guide part 520 is a slider, which is slidably connected to the fixed guide rail.

[0158] In some embodiments of this application, reference is made to Figure 14 A recyclable and reusable adsorption system is provided, comprising: a rotor 9, a nitrogen circulation pipeline, and a desorption and recovery unit. The rotor 9 includes an adsorption zone 401, a purging zone 404, a desorption zone 403, and a cooling zone 402 arranged sequentially along its circumference. Specifically, the rotor 9 is configured to rotate to different working positions to sequentially perform adsorption, purging, desorption, and cooling processes. The aforementioned adsorption zone 401, purging zone 404, desorption zone 403, and cooling zone 402 actually refer to the working processes performed by different areas on the rotor 9 when it moves to different working positions. For ease of understanding of the working processes of the rotor 9, each area is named according to the working process it performs.

[0159] The nitrogen circulation pipeline includes a circulation loop between the cooling zone 402 and the purging zone 404.

[0160] The desorption and recovery unit and the nitrogen circulation pipeline intersect through the first heat exchange device 701 for heat exchange. Meanwhile, each zone of the rotor 9 includes a heat storage material, specifically a mixture of activated carbon and SiC, with an ash content of 25%.

[0161] The desorption and recovery unit includes a desorbed gas outlet pipe P4 and a desorbed gas inlet pipe P13. The desorbed gas outlet pipe P4 is connected upstream to the desorption zone 403 and downstream to a cooling unit. The desorbed gas inlet pipe P13 is connected upstream to a heating unit and downstream to the desorption zone 403. The desorbed gas outlet pipe P4 and the desorbed gas inlet pipe P13 are connected via a condensate gas pipe P7.

[0162] The cooling unit includes a desorption fan 6, a second heat exchange device 702, a condenser 801, and a gas-liquid separator 901, which are connected in sequence on the desorption gas outlet pipeline P4.

[0163] The heating unit includes a first heat exchanger 701, a second heat exchanger 702, and a heater 120 connected in sequence on the desorption gas inlet pipe P13.

[0164] The cooling unit and the heating unit meet through the second heat exchange device 702 to exchange heat.

[0165] The downstream of the gas-liquid separator 901 includes a condensate gas pipeline P7 and a condensate liquid outlet P8. The downstream of the condensate gas pipeline P7 is connected to the heating unit via a first heat exchange device 701.

[0166] A cooling fan 110 is provided on the side of the circulation loop that leaves the purge zone 404 and enters the cooling zone 402. A first heat exchange device 701, a purge fan 130, and a first oxygen concentration meter 812 are sequentially connected on the side of the circulation loop that leaves the cooling zone 402 and enters the purge zone 404.

[0167] The nitrogen circulation pipeline also includes a nitrogen inlet P2 located on the circulation loop, with the nitrogen inlet P2 located on the circulation loop between the cooling fan 110 and the cooling zone 402.

[0168] Adsorption zone 401 includes exhaust gas inlet and emission outlet P3.

[0169] The system also includes a temperature and humidity regulating device 101, a filter 201 and an adsorption fan 301 connected in sequence, with the adsorption fan 301 connected to the exhaust gas inlet.

[0170] Reference Figure 13 The filter 201 includes a frame 2011 and multiple filter bodies 2010. The multiple filter bodies 2010 are arranged sequentially along the height direction within the frame 2011, and there is an angle between adjacent filter bodies 2010. That is, the multiple filter bodies 2010 are arranged in a W-shape, which helps to save space for the same air passage area.

[0171] This application provides an adsorption method based on the aforementioned recyclable and reusable adsorption system:

[0172] Taking the waste gas treatment of a certain printing industry production process as an example, the emission volume is 50,000 Nm³. 3 The air volume is [ / h], the components are ethyl acetate and butyl acetate, and the total concentration of exhaust gas is 2000 mg / m³. 3 The exhaust gas temperature is 50℃ and the relative humidity is 30%. The required exhaust gas concentration after treatment is <30mg / m³. 3 .

[0173] The workshop exhaust gas enters the temperature and humidity control device 101 through the exhaust gas inlet P1, where the temperature is reduced to 35℃, and then enters the filter 201 to remove particulate matter from the exhaust gas. The filtered gas is then sent to the adsorption zone 401 of the rotary wheel 9 by the adsorption fan 301. When the outlet concentration of the adsorption zone 401 is <30mg / m³, the exhaust gas is allowed to pass through the filter. 3 When the exhaust gas meets the emission standards, it is discharged into the atmosphere through the emission outlet P3.

[0174] When the adsorption zone 401 reaches adsorption saturation, the system switches to the purging zone 404. Nitrogen gas is introduced through the nitrogen inlet P2, the purging fan 130 is turned on, and the purging zone inlet gas P11 purifies the purging zone 404. The oxygen concentration of the system is monitored by a two-way oxygen concentration detector 5. When the oxygen concentration reaches the target safety value, the nitrogen protection of the system is turned off.

[0175] Then the rotor rotates from the purging zone 404 to the desorption zone 403, with a desorption air volume of 5000 Nm³. 3 / h, desorption outlet concentration is 200g / m³ 3 The desorbed gas outlet pipe P4 contains a large amount of VOCs and a small amount of moisture. The desorption fan 6 is turned on and the gas is sent to the condenser 801. Circulating water is used for condensation, and the condensation temperature is 10℃. The condensed gas outlet P6 enters the gas-liquid separator 901. The condensed liquid is discharged and collected from the condensed liquid outlet P8. The condensed gas enters the first heat exchange device 701 through the condensed gas pipe P7 and exchanges heat with the cooling zone outlet gas P10. The heat exchange temperature at the outlet P5 of the first heat exchange device is 150℃. Then it passes through the second heat exchange device 702 for heat exchange. The heat exchange temperature at the outlet P12 of the second heat exchange device is 170℃. After two heat exchanges, it enters the heater 120 and is heated to 200℃ before entering the desorption zone 403 again. This process is repeated multiple times until the design requirements are met.

[0176] When the rotor 9 moves from the desorption zone 403 to the cooling zone 402, the gas P9 from the purge zone outlet enters the cooling zone 402, using the heat from the cooling zone 402 as a heat source in the first heat exchanger 701. This raises the temperature of the condensed gas, improves the rotor's thermal efficiency, and recycles the nitrogen replenished in the system. The system's heat exchange efficiency reaches up to 90%, overall system energy consumption is reduced by 60%, and nitrogen consumption is reduced by 80%.

[0177] Depending on the composition and concentration of the waste gas being treated, multiple sealing zones can be set between the adsorption zone 401, purging zone 404, desorption zone 403, and cooling zone 402 of the rotary wheel to ensure that cross-zone operation does not occur during system operation and to improve the processing capacity of the rotary wheel system.

[0178] In some embodiments of this application, a rotary adsorption recovery system is provided, as described above. Figure 1 and Figure 15 It includes a rotating wheel 9, on which multiple channel units 91 for gas flow are provided, and the multiple channel units 91 are distributed along the axis around the rotating wheel 9.

[0179] The rotary adsorption recovery system also includes a first circulation loop unit 710, which is connected to at least two of the channel units 91. The first circulation loop unit 710 is configured such that inert gas flows through a corresponding portion of the channel units 91 for purging and flows through a corresponding other portion of the channel units 91 for cooling.

[0180] The rotary adsorption recovery system also includes a second circulation loop unit 720, which is connected to at least one of the channel units 91. The second circulation loop unit 720 is configured such that inert gas flows through the corresponding channel unit 91 for desorption.

[0181] The rotary adsorption recovery system also includes an exhaust gas pipeline connected to at least one of the channel units 91, the exhaust gas pipeline being configured to allow exhaust gas to flow through the corresponding channel unit 91 for adsorption treatment.

[0182] The rotary adsorption recovery system also includes a separation and recovery unit 600, which is connected to the second circulation loop unit 720. The separation and recovery unit 600 is configured to separate and recover the organic solvent condensed and recovered by the second circulation loop unit 720.

[0183] Specifically, a portion of the at least two channel units 91 connected to the first circulation loop unit 710 is a cooling channel unit, and the other portion is a purging channel unit. The channel unit 91 connected to the second circulation loop unit 720 is a desorption channel unit. The channel unit 91 connected to the exhaust gas pipeline is an adsorption channel unit.

[0184] When inert gas flows through the purging channel unit, the channel unit is purged. When inert gas flows through the desorption channel unit, the channel unit is desorbed. When inert gas flows through the cooling channel unit, the channel unit is cooled.

[0185] The waste gas in the workshop flows through the waste gas pipeline and passes through the adsorption channel unit. The adsorption channel unit adsorbs the organic matter in the waste gas. After adsorption, the waste gas meets the emission standards and is discharged through the emission outlet P3.

[0186] As the rotor 9 rotates, the channel unit 91 that has completed adsorption is then purged. Inert gas flows into the corresponding purging channel unit to purge it. Using inert gas for purging helps reduce the oxygen content in the system pipeline, avoiding problems caused by high oxygen content and improving system safety.

[0187] As the rotor 9 rotates, the channel unit 91 that has completed purging undergoes desorption, and inert gas flows into the corresponding desorption channel unit to desorb it.

[0188] As the rotor 9 rotates, the channel unit 91 that has completed desorption is cooled again. The inert gas flows through the corresponding cooling channel unit to cool it. Then, as the rotor 9 rotates, it moves to the adsorption station. This cycle repeats, and the rotor 9 continuously performs the adsorption-purging-desorption-cooling process to achieve cyclic desorption.

[0189] The first circulation loop unit 710 is a circulation loop connected between the purge channel unit and the cooling channel unit. The purge channel unit is at a low temperature to achieve low-temperature adsorption. After the rotor 9 completes adsorption, it rotates to the purge station. Inert gas purges the purge channel unit, so the gas flowing out of the purge channel unit is also at a low temperature. The low-temperature gas flowing out of the purge channel unit is then used to cool the cooling channel unit.

[0190] An inert gas, such as nitrogen, flows through the first circulation loop unit 710. Using an inert gas to purge and cool the rotor 9 helps reduce the oxygen content within the system, thus improving system safety.

[0191] Inert gas, such as nitrogen, flows through the second circulation loop unit 720. The inert gas is used to desorb the rotor 9 in a cyclic manner. The desorbed organic matter can be condensed and recovered, while the inert gas can circulate through the desorption channel unit to achieve cyclic desorption.

[0192] In some embodiments of this application, gas flow structures 200 are respectively provided on opposite ends of the rotor 9, and three chambers 210 for gas flow are provided within the gas flow structures 200. The three chambers 210 are a purge chamber 214, a desorption chamber 215, and a cooling chamber 216. The purge chamber 214, the desorption chamber 215, and the cooling chamber 216 are distributed sequentially around the axis of the rotor 9.

[0193] At least one channel unit 91 is located between two purge chambers 214, at least one channel unit 91 is located between two desorption chambers 215, at least one channel unit 91 is located between two cooling chambers 216, and at least one channel unit 91 is located outside the gas flow structure 200.

[0194] The purge chamber 214 is configured such that inert gas flows through the corresponding channel unit 91 in the direction of airflow for purging. The desorption chamber 215 is configured such that inert gas flows through the corresponding channel unit 91 in the direction of airflow for desorption. The cooling chamber 216 is configured such that inert gas flows through the corresponding channel unit 91 in the direction of airflow for cooling. The inert gas is, for example, nitrogen.

[0195] Specifically, the channel unit located between the two purge chambers 214 is the purge channel unit, the channel unit located between the two desorption chambers 215 is the desorption channel unit, and the channel unit located between the two cooling chambers 216 is the cooling channel unit.

[0196] The two purge chambers 214 are designated as purge inlet chamber 2141 and purge outlet chamber 2142, respectively; the two desorption chambers 215 are designated as desorption inlet chamber 2151 and desorption outlet chamber 2152, respectively; and the two cooling chambers 216 are designated as cooling inlet chamber 2161 and cooling outlet chamber 2162, respectively. Inert gas flows into the purge channel unit through purge inlet chamber 2141, purging the channel unit, and then flows out through purge outlet chamber 2142. Inert gas flows into the desorption channel unit through desorption inlet chamber 2151, desorbing the channel unit, and then flows out through desorption outlet chamber 2152. Inert gas flows into the cooling channel unit through cooling inlet chamber 2161, cooling the channel unit, and then flows out through cooling outlet chamber 2162.

[0197] The first circulation loop unit 710 is a circulation loop connected between the purge chamber 214 and the cooling chamber 216. The second circulation loop unit 720 is connected between the two desorption chambers 215.

[0198] In some embodiments of this application, reference is made to Figure 15 The second circulation loop unit 720 includes a second circulation pipe I 721. The second circulation pipe I is connected to the outlet of the desorption channel unit, and a cooling unit is provided on the second circulation pipe I, which is configured to cool the gas in the second circulation pipe I.

[0199] Specifically, the second circulation pipeline I 721 is connected to the desorption outlet chamber 2152, and a cooling unit is installed on the second circulation pipeline I 721. The cooling unit is configured to cool the gas in the second circulation pipeline I 721.

[0200] A desorption fan 601 is installed on the second circulation pipeline I 721 to provide power for gas flow. A cooling unit is also installed in the second circulation pipeline I 721. Because the gas flowing out from the desorption station is at a high temperature, the cooling unit cools the high-temperature gas in the second circulation pipeline I 721, achieving the condensation and recovery of the desorbed organic matter. The mixed solvent obtained through cooling and condensation can be recovered through the subsequent separation and recovery unit 600.

[0201] For example, the cooling unit includes a condenser 801 and a gas-liquid separator 901.

[0202] In some embodiments of this application, the second circulation loop unit 720 further includes a second circulation pipe II 722. The second circulation pipe II 722 is connected to the inlet of the desorption channel unit, and a heating unit is provided on the second circulation pipe II 722, the heating unit being configured to heat the gas in the second circulation pipe II 722.

[0203] Specifically, the second circulation pipeline II 722 is connected to the desorption inlet chamber 2151, and a heating unit is provided on the second circulation pipeline II 722. The heating unit is configured to heat the gas in the second circulation pipeline II 722.

[0204] After the high-temperature gas in the second circulation pipeline I721 is cooled and condensed, the inert gas temperature decreases, and then it is heated by the heating unit to become high-temperature gas. The high-temperature inert gas is then circulated to the desorption zone 403 for use in circulation desorption.

[0205] For example, the heating unit includes a heater 120.

[0206] In some embodiments of this application, the second circulation loop unit 720 further includes a second circulation pipeline Ⅲ 723, which is connected between the cooling unit and the heating unit.

[0207] In some embodiments of this application, reference is made to Figure 15 The first circulation loop unit 710 includes a first circulation pipe I 711 and a first circulation pipe II 712. The first circulation pipe I 711 is connected between the outlet of the purge channel unit and the inlet of the cooling channel unit, and the first circulation pipe II 712 is connected between the inlet of the purge channel unit and the outlet of the cooling channel unit.

[0208] Specifically, the first circulation pipe I 711 is connected between the purge outlet chamber 2142 and the cooling inlet chamber 2161, and the first circulation pipe II 712 is connected between the cooling outlet chamber 2162 and the purge inlet chamber 2141.

[0209] The adsorption recovery system also includes a first heat exchange device 701, which is configured to exchange heat between the first circulation pipeline II 712 and the second circulation pipeline II 722, so as to reduce the temperature of the gas flowing into the purge inlet chamber 2141 through the first circulation pipeline II 712 and increase the temperature of the gas flowing into the desorption inlet chamber 2151 through the second circulation pipeline II 722.

[0210] In other words, the gas blown out from the cooling station is at a high temperature, while the gas entering the desorption station is also required to be at a high temperature. Therefore, a first heat exchanger device is installed between the first circulation pipe II 712 and the second circulation pipe II 722 to use the heat in the first circulation pipe II 712 to heat up the second circulation pipe II 722. This achieves heat recovery and utilization, which helps to reduce system energy consumption.

[0211] In some embodiments of this application, reference is made to Figure 15 The adsorption and recovery system also includes a second heat exchange device 702, which is configured to exchange heat between the second circulation pipeline I 721 and the second circulation pipeline II 722 to reduce the gas temperature in the second circulation pipeline I 721 and increase the gas temperature in the first circulation pipeline II 712.

[0212] In other words, the high-temperature gas flowing through the second circulation pipe I 721 is from the channel unit 91 where the desorption process takes place, while the high-temperature gas flowing through the second circulation pipe II 722 is required to desorb the gas entering the channel unit 91 at high temperature. At the same time, the second circulation pipe I 721 needs to be equipped with a cooling unit to condense and cool the gas, so as to condense and recover the desorbed substances. Therefore, a second heat exchange device 702 is set between the second circulation pipe I 721 and the second circulation pipe II 722 to generate heat exchange between the two, thus realizing heat recovery and utilization, which helps to reduce system energy consumption.

[0213] In some embodiments of this application, the first heat exchange device 701 is disposed upstream of the second heat exchange device 702 along the gas flow direction in the second circulation pipeline II 722.

[0214] The low-temperature gas flowing out of the gas outlet of the gas-liquid separator 901 first undergoes a first heat exchange and temperature increase via the first heat exchange device 701, then a second heat exchange and temperature increase via the second heat exchange device 702, and then a third temperature increase via the heater 120, before flowing to the rotor 9 for high-temperature desorption. During the first heat exchange and temperature increase, the cooling energy in the second circulation pipe II 722 cools the first circulation pipe II 712. During the second heat exchange and temperature increase, the cooling energy in the second circulation pipe II 722 cools the second circulation pipe I 721.

[0215] In some embodiments of this application, the cooling unit includes a condenser 801 and a gas-liquid separator 901. Along the gas flow direction in the second circulation pipeline I 721, the condenser 801 is located downstream of the second heat exchange device 702, and the gas-liquid separator 901 is located downstream of the condenser 801. The second circulation pipeline III 723 connects the gas outlet of the gas-liquid separator 901 and the first heat exchange device 701.

[0216] In some embodiments of this application, reference is made to Figure 15 The second circulation loop unit also includes a bypass pipe 724, which connects the second circulation pipe I 721 and the second circulation pipe II 722. Along the gas flow direction, the junction of the bypass pipe 724 and the second circulation pipe II 722 is located upstream of the heater 120. A control valve is installed on the bypass pipe 724 to control the gas flow rate.

[0217] The high-temperature gas in the second circulation pipeline I 721 is divided into two paths. One path flows into the cooling unit (including the second heat exchange device 702, condenser 801 and gas-liquid separator 901 connected in sequence) for cooling and condensation. The other path flows into the bypass pipeline 724 and flows directly to the heater 120 for reheating without cooling. This helps to reduce some of the system's energy consumption.

[0218] In other embodiments of this application, reference is made to... Figure 16 The second circulation pipeline II 722 is connected between the first heat exchange device 701 and the desorption inlet chamber 2151. A heater 120 is installed on the second circulation pipeline II 722. After the second circulation pipeline II 722 undergoes the first heat exchange and temperature rise through the first heat exchange device 701, it undergoes the second heating and temperature rise through the heater 120.

[0219] Figure 16 The system schematic diagram shown is Figure 15 The difference in the system schematic shown is that, Figure 16 In the system schematic diagram shown, the second heat exchange device 702 is a water-cooled heat exchanger, which directly cools the second circulation pipeline I 721 with cold water. The second circulation pipeline II 722 does not pass through the second heat exchange device 702, but is directly heated by the heater 120 to provide high-temperature gas to the desorption inlet chamber 2151.

[0220] In some embodiments of this application, the rotary adsorption recovery system further includes a separation and recovery unit 600. (See also...) Figure 15 and Figure 17 The separation and recovery unit 600 is configured to separate and recover the organic solvents that have been desorbed from and condensed from the rotor 9 device.

[0221] The separation and recovery unit 600 includes an evaporator 620 configured to evaporate and vaporize the flowing organic solvent.

[0222] The separation and recovery unit 600 also includes a supergravity distillation bed 630, the gas inlet of which is connected to the gas outlet of the evaporator 620 via a pipeline, and the liquid outlet of which is connected to the first liquid inlet of the evaporator 620 via a pipeline.

[0223] The separation and recovery unit 600 also includes a circulation pipeline 640, one end of which is connected to the gas outlet of the supergravity distillation bed 630, and the other end of which is connected to the reflux port of the supergravity distillation bed 630.

[0224] A first condenser 641 is installed on the circulation pipeline 640.

[0225] A return pump 644 is also installed on the circulation pipeline 640 to provide the power for fluid flow.

[0226] The separation and recovery unit 600 also includes a membrane module 650, for example, a pervaporation membrane. The membrane module 650 is connected to the gas outlet of the supergravity distillation bed 630 via a first pipeline 660, on which a fourth control valve 661 is provided. The membrane module 650 is configured to dehydrate the flowing solvent to obtain the finished organic solvent.

[0227] The separation and recovery unit 600 also includes a feed pipe assembly 610, which is configured to deliver the recovered solvent to the evaporator 620 or the high gravity distillation bed 630.

[0228] Specifically, after the waste liquid separation and dehydration system is started, the waste liquid is fed into the evaporator 620 through the feed pipe group 610. When the liquid level in the evaporator 620 reaches the set value, the feed pipe group 610 stops feeding the waste liquid into the evaporator 620.

[0229] Evaporator 620 evaporates and vaporizes the recycled waste liquid inside it;

[0230] The gas inside the evaporator 620 flows out from the gas outlet of the evaporator 620 and flows into the supergravity distillation bed 630 through the gas inlet of the supergravity distillation bed 630. The gas enters the bottom of the supergravity distillation bed 630 and is separated by the supergravity distillation bed 630 to obtain light component gas and heavy component liquid.

[0231] The light component gas flows out from the gas outlet of the supergravity distillation bed 630 and enters the circulation pipeline 640. After being condensed by the first condenser 641, the gas is circulated back into the supergravity distillation bed 630.

[0232] The heavy component liquid flows out from the liquid outlet of the supergravity distillation bed 630 and enters the evaporator 620.

[0233] The acid value of the solvent exiting the first condenser 641 is monitored. When the solvent acid value does not reach the set value, the control system repeats the above steps and the system performs full reflux operation.

[0234] The acid value of the solvent exiting the first condenser 641 is monitored. When the solvent acid value reaches the set value and the value is stable, the fourth control valve 661 is opened, and the light component gas with qualified acid value enters the membrane module 650 for dehydration, thereby obtaining the finished organic solvent.

[0235] A balancing pump 622 is installed on the pipeline between the liquid outlet of the high gravity distillation bed 630 and the first liquid inlet of the evaporator 620. During the separation and distillation process, the operating power of the balancing pump 622 is controlled by the current of the high gravity distillation bed 630. The operating power of the balancing pump 622 is automatically adjusted according to the power supply load of the high gravity distillation bed 630 to ensure the normal operation of the high gravity distillation bed 630. In some embodiments, the solvent acid value of the separated and purified product is <300ppm, and the water content is <0.5%.

[0236] In some embodiments of this application, the feed pipe assembly 610 includes a first feed pipe 611, which is connected to the second liquid inlet of the evaporator 620, and a first control valve 613 is provided on the first feed pipe 611.

[0237] The feed pipe assembly 610 includes a second feed pipe 612, which is connected to the liquid inlet of the supergravity distillation bed 630. A second control valve 614 is provided on the second feed pipe 612.

[0238] The control system controls the opening and closing of the first control valve 613 and the second control valve 614 based on the acid value of the organic solvent. Adjusting the feed position according to the acid value of the recovered waste liquid helps reduce energy consumption and improve efficiency.

[0239] In some embodiments of this application, the second feed pipe 612 includes a second feed pipe 612Ⅰ, a second control valve 614Ⅰ is provided on the second feed pipe 612Ⅰ, and the second feed pipe 612Ⅰ is connected to the lower part of the supergravity distillation bed 630.

[0240] The second feed pipe 612 includes a second feed pipe 612Ⅱ, on which a second control valve 614Ⅱ is installed. The second feed pipe 612Ⅱ is connected to the middle part of the supergravity distillation bed 630. Adjusting the feed position according to the acid value of the recovered waste liquid helps to reduce energy consumption and improve efficiency.

[0241] In some embodiments of this application, a reflux tank 643 is also provided on the circulation pipeline 640. Along the flow direction of the fluid in the circulation pipeline 640, the first condenser 641, the reflux tank 643, and the reflux pump 644 are arranged in sequence.

[0242] In some embodiments of this application, a superheater 662 is provided on a first pipeline 660 between the membrane module and the gas outlet of the supergravity distillation bed 630. The superheater 662 is located downstream of the fourth control valve 661 along the flow direction of the fluid within the first pipeline 660.

[0243] Light component gas with qualified acid value flowing out of the supergravity distillation bed 630 first flows into the superheater 662 for heating and pressurization, and then flows into the membrane module 650 for dehydration treatment.

[0244] In some embodiments of this application, the liquid-gas outlet of the membrane module 650 is connected to a second pipeline 670, on which a second condenser 671, a regeneration solvent tank 672, and a product pump 674 are sequentially arranged. The liquid-gas flowing out of the membrane module is condensed by the second condenser 671 and then enters the regeneration solvent tank 672. The product pump 674 is turned on to discharge the regeneration solvent of the finished product.

[0245] In some embodiments of this application, the aqueous gas outlet of the membrane module 650 is connected to a third pipeline 680, and a third condenser 681, a vacuum buffer tank 682, and a wastewater pump 684 are sequentially arranged on the third pipeline 680. The vacuum buffer tube is connected to a vacuum pump 683.

[0246] The aqueous phase gas flowing out of the membrane module 650 is condensed by the third condenser 681 and then enters the vacuum buffer tank 682. When the liquid level in the vacuum buffer tank 682 reaches the set value, the wastewater pump 684 is turned on to discharge the wastewater.

[0247] In some embodiments of this application, the waste liquid outlet of the evaporator 620 is connected to a waste liquid pump 621 via a pipeline. When the liquid level of the waste liquid in the evaporator 620 reaches a set value, the waste liquid pump 621 is turned on to discharge the waste liquid.

[0248] In some embodiments of this application, reference is made to Figure 15 and Figure 18 The rotary adsorption recovery system also includes an inert gas replenishment unit 800, which is configured to replenish inert gas to the first circulation loop unit 710 according to the oxygen concentration value in the first circulation loop unit 710. The inert gas replenishment unit 800 is also configured to replenish inert gas to the second circulation loop unit 720 according to the oxygen concentration value in the second circulation loop unit 720.

[0249] By monitoring the oxygen content in the first circulation loop unit 710 and the second circulation loop unit 720 in real time, the amount of inert gas supplied to the system is dynamically adjusted to achieve automatic replenishment of inert gas.

[0250] In some embodiments of this application, the inert gas replenishment unit 800 includes a first replenishment pipeline 811, a first replenishment control valve 813 is provided on the first replenishment pipeline 811, the first replenishment pipeline 811 is connected to the first circulation loop unit 710, a first oxygen concentration meter 812 is provided on the first circulation loop, and the first replenishment control valve 813 is configured to open or close according to the detection data of the first oxygen concentration meter 812.

[0251] Thus, by monitoring the oxygen content in the first circulation loop unit 710 in real time through the first oxygen concentration meter 812, the first replenishment pipeline 811 is opened or closed according to the detection data of the first oxygen concentration meter 812, so as to realize the automatic replenishment of inert gas in the first circulation loop unit 710.

[0252] In some embodiments of this application, the first replenishment pipeline 811 is connected to the first circulation pipeline I 711, and the first oxygen concentration meter 812 is connected to the first circulation pipeline II 712.

[0253] Setting the first supplementary pipeline 811 and the first oxygen concentration meter 812 on different pipelines helps to improve the accuracy of oxygen concentration detection.

[0254] In some embodiments of this application, a cooling fan 110 is provided on the first circulation pipeline I 711, and the access point of the first supplementary pipeline 811 is located on the air outlet side of the fan in the cooling zone 402, which facilitates the replenishment of inert gas into the main pipeline.

[0255] In some embodiments of this application, a purge fan 130 is provided on the first circulation pipeline II 712, and the first oxygen concentration meter 812 is located on the air outlet side of the purge fan 130, which helps to improve the detection accuracy of oxygen concentration.

[0256] In some embodiments of this application, the inert gas replenishment unit 800 includes a second replenishment pipeline 821, a second replenishment control valve 823 is provided on the second replenishment pipeline 821, the second replenishment pipeline 821 is connected to the second circulation loop unit 720, the second circulation loop unit is provided with a second oxygen concentration meter 822, and the second replenishment control valve 823 is configured to open or close according to the detection data of the second oxygen concentration meter 822.

[0257] Thus, the oxygen content in the second circulation loop unit 720 is monitored in real time by the second oxygen concentration meter 822, and the second replenishment pipeline 821 is opened or closed according to the detection data of the second oxygen concentration meter 822 to realize the automatic replenishment of inert gas in the second circulation loop unit 720.

[0258] In some embodiments of this application, multiple second oxygen concentration meters 822 are provided, such as two. The second oxygen concentration meters 822 are redundantly designed, with two second oxygen concentration meters 822 provided at the same sampling point. When either second oxygen concentration meter 822 reaches a high interlock value, the second replenishment pipeline 821 is interlocked to replenish the second circulation loop unit 720 with inert gas.

[0259] In some embodiments of this application, a desorption fan 601 is provided on the second supplementary pipeline 821, the access point of the second supplementary pipeline 821 is located on the air inlet side of the desorption fan 601, and the second oxygen concentration meter 822 is located on the air outlet side of the desorption fan 601.

[0260] Placing the second supplementary pipeline 821 and the second oxygen concentration meter 822 on both sides of the desorption fan 601 helps to improve the accuracy of oxygen content detection.

[0261] In some embodiments of this application, the inert gas replenishment unit 800 includes an air compressor 830 and a nitrogen generator 840, and a pressure gauge 850 and a safety valve 860 are provided on the outlet pipeline of the nitrogen generator 840.

[0262] Specifically, the air compressor 830 operates in energy-saving mode based on the downstream air consumption. When the downstream nitrogen consumption is very small or almost no nitrogen is used, the air compressor 830 will unload and stop operating. The nitrogen generator 840 produces nitrogen that meets the purity requirements and stores it in a nitrogen storage tank. The nitrogen storage tank is equipped with a local pressure gauge 850 and a safety valve 860, and remote pressure and flow meters are installed on the outlet pipeline of the storage tank to monitor the nitrogen storage and nitrogen flow during the nitrogen replenishment process in real time. The nitrogen replenishment pipeline is also equipped with a pneumatic valve to realize the automatic control of nitrogen replenishment in the system.

[0263] In some embodiments of this application, a waste liquid recycling system is also provided, referring to... Figure 19 This includes:

[0264] The waste gas adsorption treatment unit 100 is configured to adsorb organic waste gas; wastewater is generated during the treatment of organic waste gas by the waste gas adsorption treatment unit 100.

[0265] The separation and recovery unit 600 is configured to separate and recover the recovered solvent generated by the waste gas adsorption treatment unit 100; the separation and recovery unit 600 generates waste liquid during the process of separating and recovering the recovered solvent.

[0266] The waste liquid treatment unit 900 is configured to burn the wastewater generated by the waste gas adsorption treatment unit 100 and the waste liquid generated by the separation and recovery unit 600 to generate saturated steam. The heat of the saturated steam is used to provide heat to the modules in the waste gas adsorption treatment unit 100 and the separation and recovery unit 600 that require heating, thus forming a closed-loop recovery process. This achieves deep purification of industrial organic waste gas and resource regeneration of solvents, while also constructing a waste liquid energy treatment system, achieving the dual goals of zero pollutant emissions and energy self-sufficiency.

[0267] Specifically, the waste liquid treatment unit 900 includes a combustion chamber 910. Wastewater generated by the waste gas adsorption treatment unit 100 and waste liquid generated by the separation and recovery unit 600 are sprayed into the combustion chamber 910 through an atomizing nozzle and burned.

[0268] The wastewater treatment unit 900 also includes a water supply unit. The water supply unit is configured to supply combustion water to the combustion chamber 910, whereby the heat generated by the combustion chamber 910 heats the combustion water and produces saturated steam.

[0269] Saturated steam flows through pipelines to the modules in the waste gas adsorption treatment unit 100 and the separation and recovery unit 600 that require heating, so as to provide the heat required for heating these modules.

[0270] In the waste liquid recycling system of this application, external water enters the combustion chamber 910, generating saturated steam at 1.6 MPa. This steam is then separated into high-dryness steam by a steam-water separator. 80% of the generated steam is used in the waste gas adsorption treatment unit 100, and 20% is used in the separation and recovery unit 600. This solution enables the system to achieve a steam self-sufficiency rate of over 70%, reducing energy consumption by more than 30% compared to traditional processes. It forms a complete ecological industrial chain of "waste gas purification - solvent regeneration - waste liquid energy conversion," achieving a synergistic improvement in both environmental and economic benefits.

[0271] In some embodiments of this application, the water supply unit includes a water inlet pipe 921, which is connected to the combustion chamber 910, and the combustion chamber 910 is connected to an exhaust pipe 930.

[0272] Specifically, the flue gas generated during combustion in combustion chamber 910 is discharged through exhaust pipe 930, while external water flows into combustion chamber 910 through inlet pipe 921. The external water is soft water. Heat exchanger 922 employs corrugated tube high-efficiency heat transfer technology to improve heat exchange efficiency.

[0273] In some embodiments of this application, the combustion chamber 910 is connected to an air supply line 971 and a natural gas supply line 972, the air supply amount of the air supply line 971 and the natural gas supply amount of the natural gas supply line 972 being adjustable. Air serves as combustion air, and the air and natural gas are ignited within the combustion chamber 910 by an electronic ignition system. Combustion efficiency is improved by adjusting the air-to-natural gas ratio.

[0274] In some embodiments of this application, an oxygen content monitor 940 is installed on the flue gas duct 930. The control system dynamically adjusts the ratio of natural gas to air and the amount of oxygen supplementation based on the detection data from the oxygen content monitor 940 to achieve complete combustion.

[0275] In some embodiments of this application, the waste gas adsorption treatment unit 100 includes:

[0276] Rotating wheel 9, on which multiple channel units for gas flow are provided, and the multiple channel units are distributed around the axis of the rotating wheel 9;

[0277] The exhaust gas duct 11 is connected to at least one of the channel units, and the exhaust gas duct 11 is configured to allow exhaust gas to flow through the corresponding channel unit for adsorption treatment.

[0278] Desorption circulation unit 110 is connected to at least one of the channel units, and the desorption circulation unit 110 is configured such that an inert gas (e.g., nitrogen) flows through the corresponding channel unit for desorption processing.

[0279] The desorption circulation unit 110 is equipped with a condenser 801, a gas-liquid separator 901, and a heater 120 sequentially along the gas flow direction. The gas outlet of the gas-liquid separator 901 is connected to the heater 120 via a pipeline, and the liquid outlet of the gas-liquid separator 901 is connected to the separation and recovery unit 600 via a pipeline. Steam flowing from the combustion chamber 910 flows to the heater 120 via a pipeline. The circulation desorption unit 110 corresponds to the second circulation loop unit 720 described above.

[0280] Specifically, as the rotor 9 continues to rotate, the channel units on the rotor 9 will alternately connect with the exhaust gas pipeline 11 and the desorption circulation unit 110. The channel unit connected with the exhaust gas pipeline 11 is defined as the adsorption channel unit, and the channel unit connected with the desorption circulation unit 110 is defined as the desorption channel unit.

[0281] Organic waste gas flows through the waste gas pipeline 11 and passes through the adsorption channel unit. The adsorption channel unit adsorbs the organic matter in the organic waste gas. After adsorption, the waste gas meets the emission standards and is discharged through the emission outlet.

[0282] As the rotor 9 rotates, the channel unit that has completed adsorption undergoes desorption. The inert gas circulates through the desorption channel unit via the desorption circulation unit 110 for cyclic desorption and regeneration. By using inert gas to circulate and desorb the rotor 9, the desorbed organic matter can be condensed and recovered. The inert gas can circulate through the desorption channel unit to achieve cyclic desorption.

[0283] The desorption circulation unit 110 is provided with a condenser 801, a gas-liquid separator 901 and a heater 120 arranged sequentially along the gas flow direction. The gas outlet of the gas-liquid separator 901 is connected to the heater 120 through a pipeline, and the liquid outlet of the gas-liquid separator 901 is connected to the separation and recovery unit 600 through a pipeline.

[0284] When the desorption circulation unit 110 uses inert gas to desorb the rotor 9, the inert gas flowing out of the desorption channel unit is at a high temperature. After being cooled and condensed by the condenser 801, it then passes through the gas-liquid separator 901 for gas-liquid separation. The separated gas is heated by the heater 120 and becomes a high-temperature gas. The high-temperature gas then circulates through the rotor 9 for desorption. The separated liquid enters the separation and recovery unit 600 for solvent separation and recovery.

[0285] Steam flowing out of combustion chamber 910 flows through pipeline to heater 120, providing heat to heater 120 and realizing heat recovery and utilization.

[0286] In some embodiments of this application, the steam flowing out of the combustion chamber 910 flows through a pipeline to the supergravity distillation bed 630 to provide heat to the supergravity distillation bed 630 and realize the recovery and utilization of heat.

[0287] In some embodiments of this application, the steam flowing out of the combustion chamber 910 flows through a pipeline to the superheater 662, providing heat to the superheater 622 and realizing heat recovery and utilization.

[0288] In the description of the above embodiments, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0289] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A rotary adsorption recovery system, characterized in that, Including: A rotating wheel, wherein multiple channel units for gas flow are provided on the rotating wheel, and the multiple channel units are distributed around the axis of the rotating wheel; A first circulation loop unit is connected to at least two of the channel units, and the first circulation loop unit is configured such that inert gas flows through a corresponding portion of the channel units for purging and flows through a corresponding other portion of the channel units for cooling. A second circulation loop unit is connected to at least one of the channel units, and the second circulation loop unit is configured such that inert gas flows through the corresponding channel unit for desorption treatment; An exhaust gas pipeline is connected to at least one of the channel units, and the exhaust gas pipeline is configured to allow exhaust gas to flow through the corresponding channel unit for adsorption treatment. A separation and recovery unit is connected to the second circulation loop unit, and the separation and recovery unit is configured to separate and recover the organic solvents condensed and recovered by the second circulation loop unit. An inert gas replenishment unit is configured to replenish inert gas to the first circulation loop unit according to the oxygen concentration value in the first circulation loop unit, and the inert gas replenishment unit is also configured to replenish inert gas to the second circulation loop unit according to the oxygen concentration value in the second circulation loop unit.

2. The rotary adsorption recovery system according to claim 1, characterized in that, The channel unit connected to the second circulation loop unit is a desorption channel unit; The second loop unit includes: The second circulation pipeline I is connected to the outlet of the desorption channel unit. A cooling unit is provided on the second circulation pipeline I, and the cooling unit is configured to cool the gas in the second circulation pipeline I. The second circulation pipeline II is connected to the inlet of the desorption channel unit. A heating unit is provided on the second circulation pipeline II, and the heating unit is configured to heat the gas in the second circulation pipeline II. The second circulation pipeline III is connected between the cooling unit and the heating unit.

3. The rotary adsorption recovery system according to claim 2, characterized in that, Of the at least two channel units connected to the first circulation loop unit, a portion is a cooling channel unit and the other portion is a purging channel unit; The first circulation loop unit includes a first circulation pipe I and a first circulation pipe II. The first circulation pipe I is connected between the outlet of the purge channel unit and the inlet of the cooling channel unit, and the first circulation pipe II is connected between the inlet of the purge channel unit and the outlet of the cooling channel unit. The adsorption and recovery system further includes a first heat exchange device, which is configured to exchange heat between the first circulation pipeline II and the second circulation pipeline II, so as to reduce the gas temperature flowing into the purge channel unit through the first circulation pipeline II and increase the gas temperature flowing into the desorption channel unit through the second circulation pipeline II.

4. The rotary adsorption recovery system according to claim 3, characterized in that, The adsorption and recovery system further includes a second heat exchange device, which is configured to exchange heat between the second circulation pipeline I and the second circulation pipeline II, so as to reduce the gas temperature in the second circulation pipeline I and increase the gas temperature in the first circulation pipeline II.

5. The rotary adsorption recovery system according to claim 4, characterized in that, Along the gas flow direction within the second circulation pipeline II, the first heat exchange device is located upstream of the second heat exchange device.

6. The rotary adsorption recovery system according to claim 4, characterized in that, The cooling unit includes a condenser and a gas-liquid separator. Along the gas flow direction in the second circulation pipeline I, the condenser is located downstream of the second heat exchange device, and the gas-liquid separator is located downstream of the condenser. The second circulation pipeline III connects the gas outlet of the gas-liquid separator and the first heat exchange device.

7. The rotary adsorption recovery system according to claim 2, characterized in that, The second circulation loop unit also includes a bypass pipe, which is connected between the second circulation pipe I and the second circulation pipe II, and along the gas flow direction, the junction of the bypass pipe and the second circulation pipe II is located upstream of the heater.

8. The rotary adsorption recovery system according to any one of claims 1 to 7, characterized in that, The separation and recovery unit includes: An evaporator is configured to evaporate and vaporize the flowing organic solvent; A supergravity distillation bed, wherein the gas inlet of the supergravity distillation bed is connected to the gas outlet of the evaporator via a pipeline, and the liquid outlet of the supergravity distillation bed is connected to the first liquid inlet of the evaporator via a pipeline; The circulation pipeline is connected at one end to the gas outlet of the supergravity distillation bed and at the other end to the reflux port of the supergravity distillation bed. A first condenser is installed on the circulation pipeline. A membrane module is connected to the gas outlet of the supergravity distillation bed via a first pipeline. The membrane module is configured to dehydrate the flowing solvent to obtain the finished organic solvent. The feed pipe assembly is configured to deliver recycled waste liquid to the evaporator or the high-gravity distillation bed.

9. The rotary adsorption recovery system according to claim 8, characterized in that, The feed pipe assembly includes a first feed pipe, which is connected to the second liquid inlet of the evaporator, and a first control valve is provided on the first feed pipe; The feed pipe assembly includes a second feed pipe, which is connected to the liquid inlet of the supergravity distillation bed, and a second control valve is provided on the second feed pipe.

10. The rotary adsorption recovery system according to any one of claims 1 to 7, characterized in that, The inert gas replenishment unit includes a first replenishment pipeline, a first replenishment control valve is provided on the first replenishment pipeline, the first replenishment pipeline is connected to the first circulation loop unit, and a first oxygen concentration meter is provided on the first circulation loop. The inert gas replenishment unit includes a second replenishment pipeline, a second replenishment control valve is provided on the second replenishment pipeline, the second replenishment pipeline is connected to the second circulation loop unit, and a second oxygen concentration meter is provided on the second circulation loop.

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