Efficient regeneration molecular sieve drying, adsorbing and filtering device

Abstract

The invention provides an efficient regeneration molecular sieve drying, adsorption and filtration device, which belongs to the technical field of gas drying, adsorption and filtration and comprises a shell, a gas inlet pipe arranged at the top and an exhaust assembly arranged at the lower part of the side surface. A grading filtering module, a self-adaptive adsorption module, a pressing plate module, an airflow uniform distribution plate and an intelligent regeneration module are sequentially mounted in the shell. The graded filtering module is used for multi-stage filtering; the self-adaptive adsorption module realizes adsorption through a bearing table and a molecular sieve packaging assembly; the pressing plate module elastically fixes the molecular sieve and switches a communication state during adsorption and regeneration; the intelligent regeneration module is integrated with a hot air stripping assembly and a pulse back blowing assembly to synergistically realize efficient regeneration; and regenerated tail gas is discharged from the side wall discharge pipe. Through graded filtering protection, elastic fixing of pressing plate module integration and gas path self-switching, uniform distribution optimization of gas flow and cooperative regeneration of hot air stripping and pulse back blowing, efficient purification, thorough regeneration, structure simplification and long-period stable operation of the molecular sieve drying adsorption device are achieved.

Description

Technical Field

[0001] This invention relates to the field of gas drying, adsorption, and filtration technology, and more specifically, to a high-efficiency regenerated molecular sieve drying, adsorption, and filtration device. Background Technology

[0002] In practical applications, existing molecular sieve drying and adsorption devices often face challenges such as complex inlet gas impurities leading to molecular sieve pulverization and failure, as well as incomplete regeneration. Traditional equipment often uses single-layer or simple composite filtration, which is difficult to effectively intercept micron-sized particles and organic oil and gas, causing impurities to directly adhere to the molecular sieve surface or enter the micropores, resulting in rapid decay of adsorption capacity. At the same time, existing fixing methods are mostly rigid compression or loose stacking. Rigid compression is prone to damaging the molecular sieve structure due to thermal expansion and contraction, while loose stacking leads to unstable airflow channels and lacks an effective online isolation mechanism, resulting in high maintenance and replacement costs and short equipment operation cycles.

[0003] Furthermore, conventional molecular sieve regeneration processes often rely on single hot air purging, which suffers from poor heating uniformity, difficulty in desorbing deep moisture, and high energy consumption. Especially with the use of chlorine-containing regenerants, not only does it corrode the equipment casing, but it also introduces the risk of secondary pollution. Existing flow path switching mechanisms typically rely on complex external multi-port valve assemblies, resulting in long pipelines with numerous sealing points, making them prone to gas short circuits or leaks. This leads to the escape of regeneration exhaust gas, affecting the purification effect. Simultaneously, the lack of a uniform distribution design and pulse enhancement methods for the regeneration airflow results in both localized overheating of the molecular sieve bed and purging dead zones, severely limiting the regeneration efficiency and long-term operational stability of the device.

[0004] Therefore, in view of the above situation, there is an urgent need to develop a high-efficiency regenerated molecular sieve drying adsorption filtration device to overcome the shortcomings in current practical applications. Summary of the Invention

[0005] The purpose of this invention is to provide a high-efficiency regenerated molecular sieve drying adsorption filtration device, which aims to solve the problems mentioned in the background art.

[0006] The present invention is implemented as follows: a high-efficiency regenerating molecular sieve drying adsorption filtration device includes a shell, an air inlet pipe provided at the top of the shell, and an exhaust assembly provided at the lower side of the shell; it also includes a graded filtration module, an adaptive adsorption module, a pressure plate module, an airflow distribution plate, and an intelligent regeneration module. The graded filtration module is installed on the upper inner side of the housing, and the graded filtration module is used to perform multi-stage graded filtration on the gas to be treated. The adaptive adsorption module is installed inside the housing on the lower side of the graded filtration module. The adaptive adsorption module includes a support platform fixed inside the housing. Several accommodating cavities are opened on the support platform. A bottom support grid is fixed at the bottom of the accommodating cavity. A molecular sieve encapsulation assembly is installed inside the accommodating cavity. The pressure plate module is installed between the graded filtration module and the adaptive adsorption module. The pressure plate module is used to elastically press and fix the molecular sieve encapsulation component, and to connect the graded filtration module and the adaptive adsorption module during molecular sieve adsorption, and to isolate the graded filtration module and the adaptive adsorption module during molecular sieve regeneration. The airflow distribution plate is fixed inside the housing on the lower side of the adaptive adsorption module, and the exhaust assembly is connected to the housing cavity between the adaptive adsorption module and the airflow distribution plate. The intelligent regeneration module is installed on the lower inner side of the housing. The intelligent regeneration module includes a hot stripping component and a pulse backflush component. The molecular sieve regeneration is achieved through the synergistic effect of heating regeneration by the hot stripping component and strengthening purging by the pulse backflush component. A regenerated exhaust pipe is also installed on the side wall of the housing, and the regenerated exhaust pipe is connected to the housing cavity on the upper side of the adaptive adsorption module.

[0007] Optionally, the graded filtration module includes a detachable primary filtration component, a secondary filtration component, and a senior filtration component, which are stacked sequentially from top to bottom, and a sealing gasket is provided between adjacent filtration components; the primary filtration component is a stainless steel filter screen, used to filter large particulate impurities with a particle size ≥10μm in the gas; the secondary filtration component is an activated carbon filter layer, used to adsorb organic impurities and odors in the gas; the senior filtration component is an ultrafine fiber filter membrane, used to filter tiny particulate impurities with a particle size ≤1μm in the gas.

[0008] Optionally, the molecular sieve encapsulation component is a honeycomb encapsulation structure, in which molecular sieve particles are encapsulated within honeycomb micropores; the molecular sieve is a germanium-containing heteroatom molecular sieve, the pore size of the honeycomb micropores is 0.5-1 mm, and the particle size of the molecular sieve particles is 0.3-0.8 mm.

[0009] Optionally, the intelligent regeneration module further includes a short injection pipe located in the lower middle of the inner side of the housing. The short injection pipe has an open top structure, and a flow path control block is rotatably mounted on the inner side of the short injection pipe. A flow channel is provided on one side of the flow path control block. A reversing motor is fixed at the bottom inner side of the housing, and the reversing motor is connected to the flow path control block in a driving connection. The hot air stripping assembly includes a hot air pipe and an electric heating pipe. One end of the hot air pipe is connected to the lower part of the inner cavity on one side of the short injection pipe, and the electric heating pipe is installed on the inner side of the hot air pipe. The pulse backflush assembly includes a backflush pipe and a pulse generator. One end of the backflush pipe is connected to the lower part of the inner cavity on the other side of the short injection pipe, and the pulse generator is installed on the backflush pipe.

[0010] Optionally, the electric heating tube is a high-temperature resistant quartz heating tube with a heating temperature adjustment range of 120-250℃ and a hot air flow velocity adjustment range of 0.5-2m / s; the pulse pressure of the pulse backflush assembly is 0.3-0.6MPa, the pulse frequency is 10-30Hz, and the pulse duration is 0.1-0.5s; when the hot air removal assembly is working, the reversing motor controls the flow path control block to rotate, so that the hot air pipe is connected to the upper part of the inner cavity of the injection short pipe through the guide groove; when the pulse backflush assembly is working, the reversing motor controls the flow path control block to rotate, so that the backflush pipe is connected to the upper part of the inner cavity of the injection short pipe through the guide groove; during molecular sieve adsorption, the reversing motor controls the flow path control block to rotate, so that both the backflush pipe and the hot air pipe are isolated from the upper part of the inner cavity of the injection short pipe.

[0011] Optionally, the exhaust assembly includes a circumferential manifold, an exhaust pipe, and multiple branch pipes. The multiple branch pipes are evenly distributed circumferentially, and the outer ends of the branch pipes are connected to the circumferential manifold. The exhaust pipe is installed on the circumferential manifold. A solenoid valve is installed on the regenerated exhaust pipe. An annular cavity is provided in the lower part of the support platform. A sealing ring is slidably disposed in the annular cavity. The sealing ring is used to simultaneously seal the inner ends of the multiple branch pipes. Multiple second push-pull cylinders are installed circumferentially in the support platform. The second push-pull cylinders are used to drive the sealing ring to rise and fall.

[0012] Optionally, when the intelligent regeneration module is working, the solenoid valve on the regeneration exhaust pipe is opened, and the second push-pull cylinder drives the sealing ring to move down to seal the inner end of the branch pipe; when the molecular sieve adsorption is working, the solenoid valve is closed, and the second push-pull cylinder drives the sealing ring to rise to release the seal on the inner end of the branch pipe, so that the branch pipe is connected to the shell cavity between the adaptive adsorption module and the airflow distribution plate.

[0013] Optionally, the airflow distribution plate is a porous stainless steel plate with a thickness of 8mm. The surface of the airflow distribution plate is evenly distributed with multiple conical diversion holes. The conical diversion holes have a structure that is narrower at the top and wider at the bottom, with an upper hole diameter of 2mm and a lower hole diameter of 5mm.

[0014] Optionally, the pressure plate module includes a lower pressure plate, which is slidably and sealingly connected to the inner wall of the housing. Multiple first push-pull cylinders are circumferentially distributed and fixed on the lower side of the outer ring of the lower pressure plate. The lower ends of the first push-pull cylinders are fixed to the top of the support platform. Several first elastic elements are fixed on the lower side of the lower pressure plate, each corresponding to a molecular sieve encapsulation component and used to elastically press the molecular sieve encapsulation component. A rotating spindle is rotatably mounted on the upper center of the lower pressure plate, and an upper pressure plate is fixed to the upper end of the rotating spindle. The upper pressure plate and the lower pressure plate are tightly fitted together, and several first and second air holes are respectively opened on the upper and lower pressure plates. An arc-shaped rack is fixed to the outer ring of the upper pressure plate, and the lower pressure plate rotates... An outer casing is installed, and a gear is fixed on the outer casing. The gear meshes with an arc-shaped rack. A telescopic column is slidably arranged on the upper part of the outer casing. A stop plate is fixed on the top of the telescopic column. An anti-torsion cavity is opened on the inner side of the telescopic column. An anti-torsion rod is slidably arranged in the anti-torsion cavity. The lower end of the anti-torsion rod is fixed to a lower pressure plate. A second elastic element is provided on the inner side of the outer casing. The second elastic element is used to elastically support the telescopic column. An arc-shaped guide groove is opened on the side wall of the outer casing. A coupling column is fixed on the lower end of the telescopic column. The coupling column cooperates with the arc-shaped guide groove. A support ring is fixed on the inner wall of the shell. The support ring cooperates with the stop plate and is used to support the graded filtration module.

[0015] Optionally, during molecular sieve adsorption, the abutment is separated from the support ring, and the coupling column is located at the upper end of the arc-shaped guide groove under the elastic force of the second elastic element, with the first pore and the second pore corresponding and connected one-to-one; during molecular sieve regeneration, the first push-pull cylinder extends to make the abutment abut against the support ring, and the coupling column limits the arc-shaped guide groove to rotate the outer protective cylinder, thereby driving the arc-shaped rack to rotate through the gear to separate the first pore and the second pore; and in both the molecular sieve adsorption and regeneration states, the first elastic element maintains an elastic pressing state on the molecular sieve encapsulation assembly.

[0016] The present invention provides a high-efficiency regenerated molecular sieve drying adsorption filtration device, which has the following beneficial effects: By integrating a graded filtration module, multi-stage pretreatment of the intake air is achieved, effectively protecting the core adsorption material. The pressure plate module cleverly combines the functions of elastically pressing and fixing the molecular sieve encapsulation components with automatic on / off switching of the gas path during adsorption / regeneration, simplifying the structure and ensuring airtightness. Combined with the bottom airflow distribution plate to optimize the flow field distribution, and the synergistic effect of hot stripping and pulse backflushing in the intelligent regeneration module, the regeneration thoroughness and adsorption efficiency of the molecular sieve are significantly improved, achieving efficient, stable and long-cycle operation of the device.

[0017] Other features and advantages of the invention will become clear from the following detailed description of exemplary embodiments of the invention with reference to the accompanying drawings. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the invention and, together with their description, serve to explain the principles of the invention.

[0019] Figure 1 A three-dimensional structural schematic diagram of the high-efficiency regenerated molecular sieve drying adsorption filtration device provided in an embodiment of the present invention; Figure 2 An isometric view of the high-efficiency regenerated molecular sieve drying adsorption filtration device provided in an embodiment of the present invention; Figure 3 for Figure 2 A magnified structural diagram of part A in the middle; Figure 4 This is a three-dimensional structural diagram of the pressure plate module in the high-efficiency regenerated molecular sieve drying adsorption filtration device provided in an embodiment of the present invention. Figure 5 for Figure 4 A magnified structural diagram of part B in the middle section; Figure 6 for Figure 4 A schematic diagram of the structure viewed from below; Figure 7 This is an isometric view of the pressure plate module in the high-efficiency regenerated molecular sieve drying adsorption filtration device provided in an embodiment of the present invention; Figure 8 for Figure 7 A magnified structural diagram of section C; Figure 9 This is a three-dimensional structural diagram of the injection short tube section in the high-efficiency regenerated molecular sieve drying adsorption filtration device provided in an embodiment of the present invention.

[0020] In the diagram: 1-Intake pipe, 2-House, 3-Circumferential manifold, 4-Exhaust pipe, 5-Backflush pipe, 6-Support leg, 7-Hot air pipe, 8-Regenerated exhaust pipe, 9-Primary filter assembly, 10-Intermediate filter assembly, 11-Advanced filter assembly, 12-First push-pull cylinder, 13-Pressure plate module, 14-Support platform, 15-First elastic element, 16-Accommodation cavity, 17-Molecular sieve encapsulation assembly, 18-Bottom support grille, 19-Airflow distribution plate, 20-Pulse generator, 21-Branch pipe, 22-Injection. 23-Short pipe, 24-Reversing motor, 25-Flow path control block, 26-Electric heating tube, 27-Second push-pull cylinder, 28-Sealing ring, 29-Diverter hole, 30-Annular cavity, 31-Upper pressure plate, 32-First vent, 33-Lower pressure plate, 34-Gear, 35-Arched rack, 36-Telescopic column, 37-Outer casing, 38-Coupling column, 39-Arched guide groove, 40-Second vent, 41-Rotating spindle, 42-Anti-torsion cavity, 43-Anti-torsion rod, 44-Second elastic element, 45-Drainage groove. Detailed Implementation

[0021] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0022] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention 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 invention.

[0023] The following is a detailed description of a high-efficiency regenerated molecular sieve drying, adsorption, and filtration device according to an embodiment of the present invention, with reference to the accompanying drawings.

[0024] like Figure 1-2 As shown, an embodiment of the present invention provides a high-efficiency regenerable molecular sieve drying adsorption filtration device, including a housing 2, an air inlet pipe 1 at the top of the housing 2, an exhaust assembly at the lower side of the housing 2, and a support leg 6 fixed at the bottom of the housing 2. The device also includes: A graded filtration module is installed on the upper inner side of the housing 2 to perform multi-stage graded filtration on the gas to be treated, such as sequentially removing large particulate impurities, organic impurities and micro particulate impurities, thereby realizing the pretreatment of the intake air.

[0025] An adaptive adsorption module is installed inside the housing 2 on the lower side of the graded filtration module. The adaptive adsorption module includes a support platform 14 fixed inside the housing 2. The support platform 14 has several accommodating cavities 16. A bottom support grid 18 is fixed to the bottom of the accommodating cavity 16. A molecular sieve encapsulation assembly 17 is installed inside the accommodating cavity 16.

[0026] A pressure plate module 13 is installed between the graded filtration module and the adaptive adsorption module. The pressure plate module 13 is used to elastically press and fix the molecular sieve encapsulation component 17, and to connect the graded filtration module and the adaptive adsorption module during molecular sieve adsorption, and to isolate the graded filtration module and the adaptive adsorption module during molecular sieve regeneration.

[0027] An airflow distribution plate 19 is installed and fixed inside the housing 2 on the lower side of the adaptive adsorption module. The exhaust assembly is connected to the cavity of the housing 2 between the adaptive adsorption module and the airflow distribution plate 19.

[0028] The intelligent regeneration module is installed on the lower inner side of the housing 2. The intelligent regeneration module includes a hot stripping component and a pulse backflushing component. The intelligent regeneration module achieves molecular sieve regeneration through heating regeneration by the hot stripping component and enhanced purging by the pulse backflushing component. A regeneration exhaust pipe 8 is also installed on the side wall of the housing 2, which is connected to the cavity of the housing 2 above the adaptive adsorption module. During molecular sieve regeneration, the regeneration exhaust pipe 8 is connected to the cavity of the housing 2.

[0029] This invention achieves multi-stage pretreatment of the intake air by integrating a graded filtration module, effectively protecting the core adsorption material; the pressure plate module 13 cleverly combines the functions of elastically pressing and fixing the molecular sieve encapsulation component 17 with automatic on / off switching of the gas path in the adsorption / regeneration state, simplifying the structure and ensuring airtightness; in conjunction with the bottom airflow distribution plate 19 to optimize the flow field distribution, and the synergistic effect of hot stripping and pulse backflushing in the intelligent regeneration module, the regeneration thoroughness and adsorption efficiency of the molecular sieve are significantly improved, realizing the high efficiency, stability and long cycle operation of the device.

[0030] like Figure 1-2As shown, in one embodiment, the graded filtration module includes a detachable primary filter assembly 9, a secondary filter assembly 10, and a senior filter assembly 11, which are stacked sequentially from top to bottom, and a sealing gasket (not shown) is provided between adjacent filter assemblies. The primary filter assembly 9 uses a stainless steel filter screen to filter large particulate impurities (particle size ≥ 10 μm) in the gas. The secondary filter assembly 10 uses an activated carbon filter layer to adsorb organic impurities and odors in the gas. The senior filter assembly 11 uses an ultrafine fiber filter membrane to filter fine particulate impurities (particle size ≤ 1 μm).

[0031] Preferably, a flow control valve (not shown) is installed on the air intake pipe 1 to facilitate air intake control. Each filter component of the staged filtration module is detachably connected to the inner wall of the housing 2 via snap-fit ​​connections, facilitating disassembly, cleaning, and replacement, thus reducing maintenance costs. The sealing gaskets are made of fluororubber, which is resistant to high temperatures and corrosion, ensuring the sealing performance between the filter components and preventing gas short circuits.

[0032] like Figure 1-2 As shown, in one embodiment, the molecular sieve encapsulation component 17 adopts a honeycomb encapsulation structure, encapsulating the molecular sieve particles within honeycomb micropores to form a "safe house" structure, preventing molecular sieve agglomeration and pulverization. The molecular sieve is a germanium-containing heteroatom molecular sieve, possessing high-temperature stability and chlorine-free regeneration capability. The pressure plate module 13 applies uniform downward pressure to the molecular sieve encapsulation component 17, ensuring full contact between the molecular sieve and the airflow. The use of germanium-containing heteroatom molecular sieves and a chlorine-free regeneration design eliminates the emission of chlorine pollutants, avoids equipment corrosion, significantly improves environmental friendliness, and extends the regeneration cycle compared to traditional chlorine-containing regeneration processes.

[0033] Preferably, the honeycomb micropores of the molecular sieve encapsulation component 17 have a pore size of 0.5-1 mm and the molecular sieve particles have a particle size of 0.3-0.8 mm, ensuring that the molecular sieve particles can be stably encapsulated in the micropores while ensuring smooth airflow and improving adsorption efficiency; the germanium-containing heteroatom molecular sieve can still maintain structural stability at a high temperature of 800℃, achieving complete regeneration under chlorine-free conditions and avoiding pollutant emissions and equipment corrosion.

[0034] Preferably, the side wall of the shell 2 is also provided with a molecular sieve replacement port (not shown), and the replacement port is provided with a sealing cover to facilitate the replacement of the molecular sieve; the bottom of the shell 2 is also provided with a drain port (not shown) to discharge impurities and condensate flushed down during the regeneration process to avoid the accumulation of impurities.

[0035] like Figure 1 , 2As shown in Figure 8, in one embodiment, the intelligent regeneration module further includes a short injection pipe 22 located in the middle of the lower part of the inner side of the housing 2. The short injection pipe 22 has an open top structure. A flow path control block 24 is rotatably installed on the inner side of the short injection pipe 22. A flow channel 45 is provided on one side of the flow path control block 24. A reversing motor 23 that is connected to the flow path control block 24 is fixed at the bottom inner side of the housing 2.

[0036] The hot air stripping assembly includes a hot air duct 7 and an electric heating tube 25. One end of the hot air duct 7 is connected to the lower part of the inner cavity of the short spray pipe 22. A conical electric heating tube 25 is installed on the inner side of the hot air duct 7. The electric heating tube 25 is a high-temperature resistant quartz heating tube with an adjustable heating temperature range of 120-250℃. The hot air flow velocity of the hot air duct 7 is adjustable from 0.5-2m / s. There is no limitation on the hot air supply to the hot air duct 7; a conventional fan connection is sufficient.

[0037] The pulse backflush assembly includes a backflush pipe 5 and a pulse generator 20. One end of the backflush pipe 5 is connected to the lower part of the inner cavity on the other side of the injection short pipe 22. The pulse generator 20 is installed on the backflush pipe 5 to spray pulsed airflow into the molecular sieve encapsulation assembly 17 to flush away residual impurities on the surface of the molecular sieve. The pulse pressure of the pulse backflush assembly is 0.3-0.6MPa, the pulse frequency is 10-30Hz, and the pulse duration is 0.1-0.5s. Through the synergistic effect of thermal stripping and pulse backflush, deep regeneration of the molecular sieve is achieved, and the thoroughness of regeneration is improved.

[0038] During the heating and regeneration of the hot air stripping assembly, the reversing motor 23 controls the flow path control block 24 to rotate at a certain angle, so that the hot air pipe 7 is connected to the upper part of the inner cavity of the injection short pipe 22 through the guide groove 45; during the enhanced purging of the pulse backflush assembly, the reversing motor 23 controls the flow path control block 24 to rotate at a certain angle, so that the backflush pipe 5 is connected to the upper part of the inner cavity of the injection short pipe 22 through the guide groove 45; during molecular sieve adsorption, the reversing motor 23 controls the flow path control block 24 to rotate at a certain angle, so that the backflush pipe 5 and the hot air pipe 7 are isolated from the upper part of the inner cavity of the injection short pipe 22.

[0039] The flow path control block 24 and its flow channel 45 can be arranged adaptively. In this way, the reversing motor 23 can drive the flow path control block 24 to achieve the connection and isolation states every time it rotates a certain angle. For example, when the flow channel 45 corresponds to the inner wall of the injection short pipe 22 between the backflush pipe 5 and the hot air pipe 7, the upper part of the inner cavity of the injection short pipe 22 is in an isolated state from both the backflush pipe 5 and the hot air pipe 7. This is simple and reliable.

[0040] Preferably, a dew point sensor (not shown, but can also be arranged in other locations as needed) is installed on the top of the support platform 14. The dew point sensor has a detection accuracy of ppb level and can accurately detect the gas dew point in real time. When the dew point is higher than the set threshold (adjustable from -60℃ to -45℃), the controller automatically starts the regeneration program to avoid incomplete regeneration or over-regeneration.

[0041] In a preferred embodiment, the intelligent regeneration module does not simply perform thermal stripping and pulse backflushing sequentially, but rather employs a composite regeneration control logic. This logic includes: a first stage, where thermal stripping is performed alone for a first preset time (e.g., 10-30 minutes) to heat the molecular sieve and desorb most of the moisture; a second stage, where pulse backflushing is superimposed on the continuous thermal stripping, using pulsed airflow to impact the molecular sieve channels, enhancing the desorption and purging effect, this stage lasts for a second preset time (e.g., 5-15 minutes); and a third stage, where thermal stripping is stopped, and only pulse backflushing is performed, using cold pulsed airflow to rapidly cool the molecular sieve bed, shortening the time for the device to resume adsorption. This staged, composite control strategy can further improve regeneration efficiency and reduce energy consumption.

[0042] like Figure 1-3 As shown, in one embodiment, the exhaust assembly includes a circumferential manifold 3, an exhaust pipe 4, and a branch pipe 21. Multiple branch pipes 21 are evenly distributed circumferentially. The outer end of the branch pipe 21 is connected to the circumferential manifold 3. An exhaust pipe 4 is also installed on the circumferential manifold 3.

[0043] The regenerated exhaust pipe 8 is also equipped with a solenoid valve (not shown) for easy opening and closing control.

[0044] The lower part of the support platform 14 has an annular cavity 29. A sealing ring 27, capable of simultaneously sealing the inner ends of multiple branch pipes 21, is slidably installed within the annular cavity 29. Multiple second push-pull cylinders 26 are also circumferentially distributed within the support platform 14 to drive the sealing rings 27 up and down. When the intelligent regeneration module is working, the solenoid valve opens, and the second push-pull cylinders 26 control the sealing rings 27 to seal the inner ends of the branch pipes 21. During molecular sieve adsorption, the solenoid valve closes, and the second push-pull cylinders 26 control the sealing rings 27 to rise, allowing the branch pipes 21 to connect with the cavity of the housing 2. Through the arrangement of the second push-pull cylinders 26 and the sealing rings 27, the inner ends of the branch pipes 21 can be sealed by the sealing rings 27 when the intelligent regeneration module is working, preventing gas leakage and improving regeneration efficiency.

[0045] like Figure 2-3As shown, in one embodiment, the airflow distribution plate 19 is made of a porous stainless steel plate with a thickness of 8mm. The surface of the airflow distribution plate 19 is evenly distributed with a plurality of conical diversion holes 28. The diversion holes 28 are narrower at the top and wider at the bottom, with an upper hole diameter of 2mm and a lower hole diameter of 5mm. They are used to evenly divert the gas to each of the accommodating cavities 16 of the support platform 14 during regeneration, so as to ensure that the molecular sieve encapsulation component 17 is evenly stressed and fully regenerated.

[0046] like Figure 2 , 4 As shown in Figure 8, in one embodiment, the pressure plate module 13 includes a lower pressure plate 32 that is slidably and sealingly connected to the inner wall of the housing 2. Multiple first push-pull cylinders 12 are circumferentially fixed to the lower outer ring of the lower pressure plate 32. The lower ends of the first push-pull cylinders 12 are fixed to the top of the support platform 14. A first elastic element 15, corresponding to the molecular sieve encapsulation assembly 17 and used for elastically pressing it, is also fixed to the lower side of the lower pressure plate 32. It can be understood that the first elastic element 15 can be directly pressed onto the molecular sieve encapsulation assembly 17, or indirectly pressed through a mesh or porous pressure plate.

[0047] A rotating spindle 41 is rotatably mounted on the upper middle part of the lower pressure plate 32. An upper pressure plate 30 that fits tightly against the lower pressure plate 32 is fixed at the upper end of the rotating spindle 41. A plurality of first air holes 31 and second air holes 40 are respectively opened on the upper pressure plate 30 and the lower pressure plate 32.

[0048] An arc-shaped rack 34 is fixed to the outer ring of the upper pressure plate 30. An outer protective sleeve 37 is rotatably mounted on the lower pressure plate 32. A gear 33 that meshes with the arc-shaped rack 34 is fixed on the outer protective sleeve 37. A telescopic column 36 is slidably and rotatably provided on the upper part of the outer protective sleeve 37. A stop plate 35 is fixed to the top of the telescopic column 36. An anti-torsion cavity 42 is opened on the inner side of the telescopic column 36. An anti-torsion rod 43 is slidably provided in the anti-torsion cavity 42. The lower end of the anti-torsion rod 43 is fixed on the lower pressure plate 32. A second elastic element 44 for elastic support of the telescopic column 36 is also provided on the inner side of the outer protective sleeve 37. Both the second elastic element 44 and the first elastic element 15 can be springs. The anti-torsion rod 43 can be a prism to prevent the telescopic column 36 from rotating when it moves up and down.

[0049] An arc-shaped guide groove 39 is provided on the side wall of the outer casing 37, and a coupling column 38 that cooperates with the arc-shaped guide groove 39 is fixed at the lower end of the telescopic column 36.

[0050] The inner wall of the housing 2 is also fixed with a support ring (not shown) that cooperates with the abutment plate 35 and is used to support the graded filtration module.

[0051] During molecular sieve adsorption, the abutment 35 separates from the support ring. Under the elastic force of the second elastic element 44, the coupling column 38 is located at the upper end of the arc-shaped guide groove 39, and at this time, the first air hole 31 and the second air hole 40 are in a one-to-one connected state. When the intelligent regeneration module is working, the first push-pull cylinder 12 extends so that the abutment 35 abuts against the support ring. The coupling column 38 limits the arc-shaped guide groove 39, causing the outer protective cylinder 37 to rotate, thereby causing the gear 33 to drive the arc-shaped rack 34 to rotate a certain angle until the first air hole 31 and the second air hole 40 are in a disconnected state.

[0052] Furthermore, during both molecular sieve adsorption and intelligent regeneration module operation, the first elastic element 15 is in a state of elastically pressing the molecular sieve encapsulation component 17. That is, in these two states, the only difference is the change in the magnitude of the elastic support force of the first elastic element 15 on the molecular sieve encapsulation component 17; it does not affect the state of elastic pressing on the molecular sieve encapsulation component 17, thus meeting the control rotation requirements of the upper pressure plate 30. The design is reasonable and reliable.

[0053] To prevent the first elastic element 15 from causing wear or excessive local pressure on the surface of the molecular sieve encapsulation assembly 17 during long-term pressing, a flexible pressure head (not shown in the figure) with a mesh or porous structure can be fixedly connected to the lower end of the first elastic element 15. This flexible pressure head can be made of high-temperature resistant and wear-resistant polytetrafluoroethylene or ceramic material, and its contact area with the molecular sieve encapsulation assembly 17 is larger than the cross-sectional area of ​​the first elastic element 15, thereby evenly distributing the pressing force and achieving flexible and non-destructive fixation of the molecular sieve encapsulation assembly 17.

[0054] To further facilitate maintenance, an openable maintenance door (not shown in the figure) is provided on the side wall of the housing 2 corresponding to the position of the graded filtration module. By opening this maintenance door, the operator can easily remove, clean, or replace the primary filter assembly 9, the intermediate filter assembly 10, and the advanced filter assembly 11 without disassembling the upper structure of the entire device, greatly reducing maintenance difficulty and downtime.

[0055] The device's workflow is as follows: a) During adsorption operation: intake → graded filtration by the graded filtration module → passing through the molecular sieve of the adaptive adsorption module from top to bottom → purified gas is discharged from the exhaust assembly.

[0056] b) During molecular sieve regeneration: the intelligent regeneration module works → hot air flows from bottom to top in a countercurrent to purge the molecular sieve of the adaptive adsorption module → the regeneration exhaust gas is discharged from the regeneration exhaust gas discharge pipe 8.

[0057] The above embodiments of the present invention provide a high-efficiency regenerated molecular sieve drying adsorption filtration device, the working principle of which is as follows: a) Adsorption drying process: The gas to be treated enters the housing 2 through the intake pipe 1 and first flows through the staged filtration module. The gas sequentially passes through the primary filter component 9 to remove large particulate impurities, the intermediate filter component 10 to adsorb organic impurities and odors, and the advanced filter component 11 to intercept fine particulate impurities, thus completing the intake pretreatment.

[0058] The purified gas flows downwards into the adaptive adsorption module and passes through the pressure plate module 13. At this time, the first push-pull cylinder 12 is in a retracted state, the abutment plate 35 is separated from the support ring, and under the elastic force of the second elastic element 44, the coupling column 38 is located at the upper end of the arc-shaped guide groove 39. The outer protective cylinder 37 does not rotate, and the gear 33 drives the arc-shaped rack 34 to fix the relative positions of the upper pressure plate 30 and the lower pressure plate 32. The first gas hole 31 and the second gas hole 40 are connected one-to-one. The gas passes smoothly through the pressure plate module 13 and enters the molecular sieve encapsulation assembly 17 in the cavity 16 for deep drying and adsorption.

[0059] After drying, the gas passes through the bottom support grid 18 and enters the lower cavity of the housing 2. At this time, the second push-pull cylinder 26 drives the sealing ring 27 to rise, releasing the seal on the inner end of the branch pipe 21. The gas then flows through the branch pipe 21 into the circumferential collector pipe 3 and is finally discharged through the exhaust pipe 4. During this process, the first elastic element 15 maintains elastic pressure on the molecular sieve encapsulation assembly 17 to ensure adsorption efficiency.

[0060] b) Intelligent regeneration workflow: When the dew point sensor detects that the gas dew point is higher than the set threshold, the controller starts the regeneration program.

[0061] b1) Gas Path Switching and Isolation: The first push-pull cylinder 12 extends, pushing the abutment plate 35 upward to abut against the support ring. The coupling column 38 slides along the arc-shaped guide groove 39 and is limited, driving the outer protective cylinder 37 to rotate. This, in turn, drives the arc-shaped rack 34 and the upper pressure plate 30 to rotate at a certain angle through the gear 33, causing the first air hole 31 and the second air hole 40 to be staggered and isolated, cutting off the passage between the graded filtration module and the adaptive adsorption module. At the same time, the second push-pull cylinder 26 drives the sealing ring 27 to descend, sealing the inner end of the branch pipe 21 to prevent gas leakage from the exhaust assembly. The solenoid valve on the regenerated exhaust pipe 8 opens.

[0062] b2) Hot air blowing regeneration: The reversing motor 23 drives the flow path control block 24 to rotate, causing the guide groove 45 to connect the hot air pipe 7 and the injection short pipe 22. The electric heating tube 25 heats the air, and the hot air flows upward against the flow through the hot air pipe 7, the guide groove 45, and the injection short pipe 22, passing through the airflow distribution plate 19 and the conical diversion hole 28, and evenly entering each accommodating cavity 16. The high-temperature hot air heats and desorbs the molecular sieve encapsulation component 17, and the desorbed moisture and impurities form regeneration tail gas, which is discharged upward through the regeneration tail gas emission pipe 8.

[0063] b3) Pulse backflush enhancement: The reversing motor 23 drives the flow path control block 24 to rotate again, switching the flow channel 45 to connect the backflush pipe 5 and the injection short pipe 22. The pulse generator 20 generates a high-pressure pulse airflow, which impacts the molecular sieve encapsulation component 17 upward through the backflush pipe 5 and the injection short pipe 22, flushing away residual impurities on the surface and achieving deep regeneration in conjunction with thermal blow-off.

[0064] b4) Reset: After regeneration, the hot air pipe 7 and the backflush pipe 5 are disconnected from the injection short pipe 22, each actuator is reset, and the device re-enters the adsorption working state.

[0065] In summary, this invention achieves efficient purification, environmental protection without pollution, thorough regeneration, and stable and reliable operation through a multi-stage filtration pretreatment, chlorine-free regeneration of germanium-containing molecular sieves, and a deep regeneration mechanism that combines thermal stripping and pulse backflushing. Combined with the automatic gas path switching of the pressure plate module and the leak-proof design of the sealing ring, this invention achieves efficient purification, environmental protection without pollution, thorough regeneration, and stable and reliable operation.

[0066] There are no specific limitations on the control, model and circuit connection of each component, which can be flexibly set in actual application.

[0067] The circuits, electronic components, and modules involved are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this invention does not involve any improvement to the software and methods.

[0068] In the description of this invention, it should be noted that, unless otherwise explicitly 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 of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0069] In the description of this specification, references to terms such as "embodiment," "example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0070] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A high-efficiency regenerated molecular sieve drying adsorption filtration device, comprising a housing (2), wherein an air inlet pipe (1) is provided at the top of the housing (2), and an exhaust assembly is provided at the lower side of the housing (2), characterized in that, It also includes a graded filtration module, an adaptive adsorption module, a pressure plate module (13), an airflow distribution plate (19), and an intelligent regeneration module; The graded filtration module is installed on the upper inner side of the housing (2), and the graded filtration module is used to perform multi-stage graded filtration on the gas to be treated. The adaptive adsorption module is installed inside the housing (2) on the lower side of the graded filtration module. The adaptive adsorption module includes a support platform (14) fixed inside the housing (2). The support platform (14) has several cavities (16) on it. A bottom support grid (18) is fixed at the bottom of the cavity (16). A molecular sieve encapsulation assembly (17) is installed inside the cavity (16). The pressure plate module (13) is installed between the graded filtration module and the adaptive adsorption module. The pressure plate module (13) is used to elastically press and fix the molecular sieve encapsulation component (17), and to connect the graded filtration module and the adaptive adsorption module during molecular sieve adsorption, and to separate the graded filtration module and the adaptive adsorption module during molecular sieve regeneration. The airflow distribution plate (19) is fixed inside the housing (2) on the lower side of the adaptive adsorption module, and the exhaust assembly is connected to the cavity of the housing (2) between the adaptive adsorption module and the airflow distribution plate (19). The intelligent regeneration module is installed on the lower inner side of the housing (2). The intelligent regeneration module includes a hot stripping component and a pulse backflushing component. The molecular sieve regeneration is achieved through the synergistic effect of heating regeneration by the hot stripping component and strengthening purging by the pulse backflushing component. A regenerated exhaust pipe (8) is also installed on the side wall of the housing (2), and the regenerated exhaust pipe (8) is connected to the cavity of the housing (2) on the upper side of the adaptive adsorption module.

2. The high-efficiency regenerated molecular sieve drying, adsorption, and filtration device according to claim 1, characterized in that, The graded filtration module includes a detachable primary filtration component (9), a secondary filtration component (10), and a high-level filtration component (11), which are stacked sequentially from top to bottom, and a sealing gasket is provided between adjacent filtration components. The primary filter component (9) is a stainless steel filter screen used to filter large particulate impurities with a particle size ≥10μm in the gas. The intermediate filtration component (10) is an activated carbon filter layer, used to adsorb organic impurities and odors in the gas; The advanced filtration component (11) is an ultra-fine fiber filter membrane used to filter out tiny particulate impurities with a particle size ≤1μm in the gas.

3. The high-efficiency regenerated molecular sieve drying, adsorption, and filtration device according to claim 1, characterized in that, The molecular sieve encapsulation component (17) has a honeycomb encapsulation structure, which encapsulates molecular sieve particles in honeycomb micropores; The molecular sieve is a germanium-containing heteroatom molecular sieve, the pore size of the honeycomb micropores is 0.5-1 mm, and the particle size of the molecular sieve particles is 0.3-0.8 mm.

4. The high-efficiency regenerated molecular sieve drying, adsorption, and filtration device according to claim 1, characterized in that, The intelligent regeneration module also includes a short injection pipe (22) located in the middle of the lower part of the inner side of the housing (2). The short injection pipe (22) has an open structure at the top. A flow path control block (24) is rotatably installed on the inner side of the short injection pipe (22). A flow channel (45) is provided on one side of the flow path control block (24). A reversing motor (23) is fixed at the bottom of the inner side of the housing (2). The reversing motor (23) is connected to the flow path control block (24) in a transmission connection. The hot air blow-off assembly includes a hot air pipe (7) and an electric heating pipe (25). One end of the hot air pipe (7) is connected to the lower part of the inner cavity on one side of the jet short pipe (22), and the electric heating pipe (25) is installed inside the hot air pipe (7). The pulse backflush assembly includes a backflush pipe (5) and a pulse generator (20). One end of the backflush pipe (5) is connected to the lower part of the inner cavity on the other side of the injection short pipe (22), and the pulse generator (20) is installed on the backflush pipe (5).

5. The high-efficiency regenerated molecular sieve drying, adsorption, and filtration device according to claim 4, characterized in that, The electric heating tube (25) is a high-temperature resistant quartz heating tube with a heating temperature adjustment range of 120-250℃ and a hot air flow velocity adjustment range of 0.5-2m / s for the hot air pipe (7). The pulse pressure of the pulse backflush assembly is 0.3-0.6 MPa, the pulse frequency is 10-30 Hz, and the pulse duration is 0.1-0.5 s; When the hot air stripping assembly is working, the reversing motor (23) controls the flow path control block (24) to rotate, so that the hot air pipe (7) is connected to the upper part of the inner cavity of the injection short pipe (22) through the flow channel (45); When the pulse backflush assembly is working, the reversing motor (23) controls the flow path control block (24) to rotate, so that the backflush pipe (5) is connected to the upper part of the inner cavity of the injection short pipe (22) through the flow channel (45); During molecular sieve adsorption, the reversing motor (23) controls the flow path control block (24) to rotate, so that the backflush pipe (5) and the hot air pipe (7) are separated from the upper part of the inner cavity of the injection short pipe (22).

6. The high-efficiency regenerated molecular sieve drying adsorption filtration device according to claim 1, characterized in that, The exhaust assembly includes a circumferential manifold (3), an exhaust pipe (4), and multiple branch pipes (21). The multiple branch pipes (21) are evenly distributed circumferentially, and the outer ends of the branch pipes (21) are connected to the circumferential manifold (3). The exhaust pipe (4) is installed on the circumferential manifold (3). A solenoid valve is installed on the regenerated exhaust pipe (8); The lower part of the support platform (14) is provided with an annular cavity (29), and a sealing ring (27) is slidably disposed in the annular cavity (29). The sealing ring (27) is used to simultaneously seal the inner ends of multiple branch pipes (21). Multiple second push-pull cylinders (26) are installed circumferentially inside the bearing platform (14). The second push-pull cylinders (26) are used to drive the sealing ring (27) to rise and fall.

7. The high-efficiency regenerated molecular sieve drying, adsorption, and filtration device according to claim 6, characterized in that, When the intelligent regeneration module is working, the solenoid valve on the regeneration exhaust pipe (8) is opened, and the second push-pull cylinder (26) drives the sealing ring (27) to move down to form a seal on the inner end of the branch pipe (21); When the molecular sieve adsorption is working, the solenoid valve is closed, and the second push-pull cylinder (26) drives the sealing ring (27) to rise to release the sealing of the inner end of the branch pipe (21), so that the branch pipe (21) is connected to the cavity of the shell (2) between the adaptive adsorption module and the airflow distribution plate (19).

8. The high-efficiency regenerated molecular sieve drying, adsorption, and filtration device according to claim 1, characterized in that, The airflow distribution plate (19) is a porous stainless steel plate with a thickness of 8mm, and multiple conical diversion holes (28) are evenly distributed on the surface of the airflow distribution plate (19). The tapered diversion hole (28) has a structure that is narrow at the top and wide at the bottom, with an upper diameter of 2 mm and a lower diameter of 5 mm.

9. The high-efficiency regenerated molecular sieve drying, adsorption, and filtration device according to claim 1, characterized in that, The pressure plate module (13) includes a lower pressure plate (32), which is slidably connected to the inner wall of the housing (2). Multiple first push-pull cylinders (12) are fixedly distributed along the circumferential direction on the lower side of the outer ring of the lower pressure plate (32). The lower end of the first push-pull cylinder (12) is fixed to the top of the support platform (14). Several first elastic elements (15) are fixed on the lower side of the lower pressure plate (32). The first elastic elements (15) correspond one-to-one with the molecular sieve encapsulation assembly (17) and are used to elastically press the molecular sieve encapsulation assembly (17). A rotating spindle (41) is rotatably mounted on the upper middle part of the lower pressure plate (32). An upper pressure plate (30) is fixed at the upper end of the rotating spindle (41). The upper pressure plate (30) and the lower pressure plate (32) are tightly fitted together. A plurality of first air holes (31) and second air holes (40) are respectively opened on the upper pressure plate (30) and the lower pressure plate (32). An arc-shaped rack (34) is fixed to the outer ring of the upper pressure plate (30), and an outer protective sleeve (37) is rotatably installed on the lower pressure plate (32). A gear (33) is fixed on the outer protective sleeve (37), and the gear (33) meshes with the arc-shaped rack (34). The upper part of the outer casing (37) is slidably provided with a telescopic column (36), the top of the telescopic column (36) is fixed with a stop plate (35), the inner side of the telescopic column (36) is provided with an anti-torsion cavity (42), an anti-torsion rod (43) is slidably provided in the anti-torsion cavity (42), and the lower end of the anti-torsion rod (43) is fixed on the lower pressure plate (32). The inner side of the outer casing (37) is provided with a second elastic element (44), which is used to elastically support the telescopic column (36); The outer casing (37) has an arc-shaped guide groove (39) on its side wall, and a coupling column (38) is fixed at the lower end of the telescopic column (36). The coupling column (38) cooperates with the arc-shaped guide groove (39). A support ring is fixed on the inner wall of the housing (2), and the support ring cooperates with the abutment plate (35) and is used to support the graded filtration module.

10. The high-efficiency regenerated molecular sieve drying, adsorption, and filtration device according to claim 9, characterized in that, During molecular sieve adsorption, the abutment (35) is separated from the support ring. Under the elastic force of the second elastic element (44), the coupling column (38) is located at the upper end of the arc-shaped guide groove (39), and the first pore (31) and the second pore (40) are connected one-to-one. During molecular sieve regeneration, the first push-pull cylinder (12) extends to make the abutment plate (35) abut against the support ring, the coupling column (38) limits the arc-shaped guide groove (39) to make the outer casing (37) rotate, and then the arc-shaped rack (34) is driven to rotate by the gear (33) to separate the first air hole (31) from the second air hole (40); Furthermore, during both the adsorption and regeneration states of the molecular sieve, the first elastic element (15) maintains an elastic pressing state on the molecular sieve encapsulation assembly (17).

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