A zeolite runner pre-filter device and filtering method

Abstract

The application discloses the technical field of dust adsorption and filtration, and relates to a zeolite rotary wheel pre-filtering device and a filtering method, aiming to solve the problem of complicated replacement and installation and gradually reduced efficiency of a bag-type filter of a zeolite rotary wheel system in the prior art. The device comprises a wind box, the front end of the wind box is provided with an air inlet channel and a primary efficiency filter plate assembly, the rear end of the wind box is provided with a zeolite rotary wheel adsorption assembly, an integrated suction and separation filtering assembly is arranged between the primary efficiency filter plate assembly and the zeolite rotary wheel adsorption assembly, and the integrated suction and separation filtering assembly comprises a plurality of groups of clamping track plates, and a filtering disc is sealingly and rotatably arranged between each group of clamping track plates. The application is used for pre-filtering of organic waste gas, the structure of the filter is improved, the filter can be back-flushed in real time during work, the filter can be efficiently reused, the structure is convenient to maintain and replace, the maintenance cost in the later period can be effectively reduced, and the efficiency of the filter can be ensured.

Description

Technical Field

[0001] This invention relates to a zeolite rotor pre-filter and filtration method, belonging to the field of dust adsorption and filtration technology. Background Technology

[0002] In the field of organic waste gas treatment technology, the adsorption and desorption of zeolite rotors create excellent conditions for the continuous treatment of organic waste gas. However, due to the high cost of zeolite rotors, it is particularly necessary to reduce the content of other large-diameter particulate impurities in the waste gas in order to effectively extend their service life. In traditional methods, in order to effectively reduce the content of other impurities in the air, multiple sets of bag filters are usually installed in the air box to intercept other particulate impurities in the air. However, the adsorbed particles of these bag filters will obstruct the airflow, resulting in a gradual increase in air resistance and a gradual increase in equipment power consumption. Therefore, in traditional methods, as many bag filters as possible are arranged in the cross-section of the air box to increase its filtration area. This makes the overall installation and subsequent replacement of bag filters more complicated, making it impossible to effectively balance equipment operating efficiency and maintenance costs. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a zeolite rotor pre-filter device and filtration method for pre-filtration of organic waste gas. By improving the structure of the filter, it can be backflushed in real time during operation, which can realize the efficient reuse of the filter. At the same time, the structure is more convenient for maintenance and replacement, which can effectively reduce the later maintenance cost and ensure the efficiency of the filter.

[0004] To achieve the above objectives, the present invention employs the following technical solution:

[0005] On one hand, the present invention provides a zeolite rotor pre-filter device, including a wind box. The front end of the wind box is provided with an air inlet and a primary filter plate assembly. The rear end of the wind box is provided with a zeolite rotor adsorption assembly. An integrated adsorption-desorption filter assembly is provided between the primary filter plate assembly and the zeolite rotor adsorption assembly. The integrated adsorption-desorption filter assembly includes multiple sets of clamping track plates. Each set of clamping track plates is sealed and rotatably fitted with a filter disc. The filter disc includes a top plate, a bottom plate, and a filter layer filled between the top plate and the bottom plate. The filter layer covers the openings in the middle of the corresponding set of clamping track plates. In the hollowed-out area, the airflow of the air box can only blow air from the hollowed-out area channel to the zeolite rotor adsorption assembly. The air box is also equipped with a drive device for driving the rotation of multiple filter discs. Each filter disc has an air inlet hood installed at its air outlet surface and an air outlet hood installed at its air inlet surface. The air outlet of the air inlet hood and the air inlet of the air outlet hood are arranged opposite each other. The air box is provided with an air inlet pipe and an air outlet pipe on its exterior. The air inlet pipe has multiple branch pipes that are connected to the air inlet hoods respectively. The air outlet pipe has multiple branch pipes that are connected to the air outlet hoods. A pump is provided in the passage of the air outlet pipe and / or the air inlet pipe.

[0006] Specifically, multiple sets of clamping track plates are arranged vertically, and the driving device is used to drive the shafts that pass through multiple filter discs to drive the corresponding filter discs to rotate. Inside the air box and on both sides of the multiple sets of clamping track plates, there are wind baffles. Each wind baffle and the inside of the air box form only one air vent. One air vent is located at the upper end of the air box, and the other air vent is located at the lower end of the air box. The wind baffles can cover the sides of multiple clamping track plates at the same time.

[0007] Specifically, each set of clamping track plates includes an upper clamping plate and a lower clamping plate. The opposite surfaces of the upper and lower clamping plates are provided with annular track grooves for the rotation of the filter disc. The air box is provided with multiple guide rods that pass through multiple sets of clamping track plates. The air box is also provided with an adjusting rod that passes through multiple clamping track plates. The upper clamping plate is fixedly positioned between two baffle plates. The lower clamping plate can move closer to or away from the upper clamping plate through the guide rods. A partial area of ​​the adjusting rod is provided with a threaded structure that can cooperate with the lower clamping plate. The air box is also provided with an adjusting component for driving the adjusting rod to rotate.

[0008] Specifically, a pad is provided between two adjacent clamping track plates. The pad includes a sleeve that is slidably sleeved on the guide rod or adjusting rod, and a shim is threadedly connected to the outside of the sleeve.

[0009] Specifically, an annular gear ring is provided at the center of the surface of each filter disc, with the teeth of the annular gear ring facing inward. Multiple drive gears are mounted on the shaft that is driven by the drive device and passes through multiple filter discs. A hollow mounting plate is also fixedly provided on each clamping track plate. Multiple planetary gears are rotatably mounted on the hollow mounting plate. Each planetary gear is meshed with the inner teeth of the annular gear ring and the outer gear ring of the drive gear at the corresponding height position.

[0010] Specifically, a low-temperature chamber is provided in the cavity between the primary filter plate assembly and its adjacent baffle plate. The low-temperature chamber is provided with an air inlet and an air outlet. The air inlet serves as the only air outlet of the air outlet cavity of the primary filter plate assembly, and the air outlet serves as the only air inlet of the air outlet cavity where the baffle plate is located. A guide duct is provided at the air inlet position inside the low-temperature chamber. The air outlet of the guide duct points to the lower part of the low-temperature chamber. Coolant is provided below the low-temperature chamber, overflowing the air outlet of the guide duct. The liquid level of the coolant is lower than that of the air outlet. Multiple nozzles are provided inside the guide duct via spray pipes.

[0011] Specifically, the bottom of the cryogenic chamber is provided with a liquid outlet pipe, which is connected to the spray nozzle via a circulation pump. A cooling device is also provided on the connecting pipe between the liquid outlet pipe and the spray nozzle.

[0012] Specifically, a decomposition mesh plate is provided at the lower air outlet of the guide duct.

[0013] Specifically, the branch pipe is equipped with a solenoid valve and a pressure sensor, and each filter disc is equipped with a temperature and humidity sensor and a pressure sensor in its air inlet chamber. The air inlet end of the air inlet pipe is equipped with an air heating oven.

[0014] On the other hand, the zeolite rotor pre-filtration method provided by the present invention, employing the above-mentioned zeolite rotor pre-filtration device, is characterized in that the method includes the following steps:

[0015] The filter discs inside the air box come in three sizes, and are used to filter particles with diameters greater than 5 μm, between 1 and 5 μm, and between 0.3 and 1 μm, respectively, from upstream to downstream of the airflow.

[0016] Samples of exhaust gas were collected, and the proportions of particles with diameters greater than 5 μm, between 1 and 5 μm, and between 0.3 and 1 μm in the exhaust gas samples were calculated.

[0017] The transmission ratio of the drive gear and the ring gear corresponding to the filter disk of different height layers is changed according to the impurity content of different particle sizes.

[0018] Install the equipment and its gear assembly according to the designed transmission ratio, and perform ventilation and filtration. At the same time, open the air passages in the air intake and exhaust hoods to perform real-time backflushing.

[0019] Compared with the prior art, the beneficial effects achieved by the present invention are as follows:

[0020] This invention configures multiple filter discs with different filtration levels inside the air box, and sets an inlet hood and an outlet hood on the inlet and outlet sides of each filter disc. This makes the air blowing direction of the hood opposite to the filtration direction of the filter disc, so that the filter disc part moving to the outlet hood position can be back-blown, thereby blowing the particles in the filter disc out of the filter layer in the opposite direction. In this way, the service life of the filter layer can be effectively improved, the replacement cycle can be shortened, and the cumbersomeness of replacement can be reduced. Moreover, back-blowing can be performed in time during equipment operation to ensure that the filter layer filters with low wind resistance, which is conducive to ensuring the actual power consumption efficiency of the equipment. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the zeolite rotor pre-filter provided in an embodiment of the present invention;

[0022] Figure 2 This is a partial structural schematic diagram of the zeolite rotor pre-filter device provided in an embodiment of the present invention;

[0023] Figure 3 This is the present invention. Figure 2 Enlarged view of section A of the zeolite rotor pre-filter device provided in the embodiment;

[0024] Figure 4 This is a schematic diagram of the internal structure of the zeolite rotor pre-filter provided in an embodiment of the present invention;

[0025] Figure 5 This is the present invention. Figure 4 Enlarged view of section B of the zeolite rotor pre-filter device provided in the embodiment;

[0026] Figure 6 This is a front view of the zeolite rotor pre-filter device provided in an embodiment of the present invention;

[0027] Figure 7 This is the present invention. Figure 6 A cross-sectional view along the CC direction of the zeolite rotor pre-filter device provided in the embodiment;

[0028] Figure 8 This is the present invention. Figure 6 A DD-direction cross-sectional view of the zeolite rotor pre-filter device provided in the embodiment;

[0029] Figure 9 This is the present invention. Figure 6 A cross-sectional view of the zeolite rotor pre-filter device provided in the embodiment;

[0030] Figure 10 This is the present invention. Figure 6 A cross-sectional view of the zeolite rotor pre-filter device provided in the embodiment, along the FF direction;

[0031] Figure 11 This is the present invention. Figure 7 Enlarged view of the structure at point G of the zeolite rotor pre-filter device provided in the embodiment;

[0032] Figure 12 This is the present invention. Figure 8 Enlarged view of the structure at point H of the zeolite rotor pre-filter device provided in the embodiment;

[0033] Figure 13 This is the present invention. Figure 9 Enlarged view of section I of the zeolite rotor pre-filter device provided in the embodiment;

[0034] Figure 14 This is the present invention. Figure 10 Enlarged view of the structure at point J of the zeolite rotor pre-filter device provided in the embodiment;

[0035] Figure 15 This is a side view of the zeolite rotor pre-filter device provided in an embodiment of the present invention;

[0036] Figure 16 This is the present invention. Figure 15 A cross-sectional view of the zeolite rotor pre-filter device provided in the embodiment, along the KK direction;

[0037] Figure 17 This is the present invention. Figure 16 Enlarged view of the structure at point L of the zeolite rotor pre-filter device provided in the embodiment;

[0038] Figure 18 This is the present invention. Figure 16 Enlarged view of the structure at point M of the zeolite rotor pre-filter device provided in the embodiment;

[0039] Reference numerals: 1. Airbox; 2. Primary filter plate assembly; 3. Zeolite rotor adsorption assembly; 4. Clamping track plate; 401. Upper clamping plate; 402. Lower clamping plate; 5. Filter disc; 6. Drive device; 7. Air inlet hood; 8. Air outlet hood; 9. Air inlet pipe; 10. Air outlet pipe; 11. Pump; 13. Adjusting rod; 14. Sleeve; 15. Elevating piece; 16. Adjusting piece; 17. Air heating oven; 18. Hollow mounting plate; 19. Ring gear; 20. Drive gear; 21. Planetary gear; 22. Low temperature chamber; 23. Guide air duct; 24. Nozzle; 25. Liquid outlet pipe; 26. Spray pipe; 27. Decomposition mesh plate; 28. Wind baffle plate; 30. Hollowed-out stand. Detailed Implementation

[0040] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0041] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are used only for the convenience of describing the 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, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0042] 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 will understand the specific meaning of the above terms in this invention based on the specific circumstances. Example 1

[0043] This invention provides a zeolite rotor pre-filter for pre-filtration of organic waste gas. By improving the filter structure, it allows for real-time backflushing during operation, enabling efficient reuse of the filter. Simultaneously, the structure facilitates maintenance and replacement, effectively reducing later maintenance costs and ensuring filter operating efficiency. The basic structure of the device includes a wind box 1, with an air inlet and a primary filter plate assembly 2 at its front end. The primary filter plate assembly 2 intercepts larger impurities in the waste gas. A zeolite rotor adsorption assembly 3 is located at the rear end of the wind box 1, configured to treat organic waste gas (details omitted here). To ensure the lifespan of the zeolite rotor adsorption assembly 3, an integrated suction-desorption filter assembly is installed between the primary filter plate assembly 2 and the zeolite rotor adsorption assembly 3. This assembly adsorbs and desorbs small dust particles adsorbed by the filter layer. Specifically, the integrated suction-desorption filter assembly can be configured with multiple sets of clamping track plates 4, each set of clamping track plates 4 being sealed and rotatably fitted with a filter disc 5. (See reference...) Figure 2 and Figure 3 As shown, specifically, the filter disc 5 here includes an upper screen plate, a lower screen plate, and a filter layer filled between the upper and lower screen plates. The upper and lower screen plates can be fixedly arranged. The filter layer is made of polyester fiber or glass fiber arranged with a corresponding density. To prevent the fiber material from being blown out from the hollow positions of the upper and lower screen plates during backflushing and causing structural damage, a polytetrafluoroethylene (PTFE) membrane can be applied to the upper and lower surfaces of the fiber layer to protect the filter layer. In this case, the upper and lower screen plates are used to clamp the membrane, which can directly avoid damage to the fiber filter layer. (See reference...) Figure 2 As shown, a perforated area is provided in the middle of the clamping track plate 4 to allow gas to pass through. To achieve sufficient filtration, the filter layer should cover all the perforated areas in the middle of the corresponding clamping track plate 4, thereby maximizing the filtration area. For the internal configuration of the mechanism, to prevent dust-laden gas from bypassing the filter area, the airflow path of the air box 1 can be configured to blow only from the perforated area channel to the zeolite rotary adsorption assembly 3. That is, a good sealing design should be maintained between the side of the clamping track plate 4 and the inner wall of the air box 1. To ensure the ventilation efficiency of the equipment, a back-blowing system is configured inside the equipment to blow away dust particles attached to one side of the fiber filter layer. Specifically, a drive device 6 for driving multiple filter discs 5 to rotate is also installed on the air box 1. Each filter disc 5 can be driven to rotate relative to the corresponding clamping track plate 4 by directly using a motor equipped with a reducer. This can be referred to... Figure 5 Figure 16As shown, an air inlet hood 7 is installed at the air outlet position of each filter disc 5, and an air outlet hood 8 is installed at the air inlet position of each filter disc 5. The air outlets of the air inlet hood 7 and the air inlets of the air outlet hood 8 are arranged opposite each other so that the air inlet hood 7 can blow away the dust into the air outlet hood 8 when air is intake. The air inlet hood 7 and the air outlet hood 8 should fit snugly against the upper and lower mesh plates of the filter disc 5 during operation to achieve good airtightness. However, because the snug fit design increases resistance, an additional drive module can be used to drive the air inlet hood 7 or the air outlet hood 8. The system can be raised or lowered, or an oil supply system can be used to reduce the system's operating resistance. The specific oil supply method is not limited here. In order to supply air to the air intake hood 7 and directly discharge the back-blown dust from the equipment, an air intake pipe 9 and an air outlet pipe 10 are provided on the outside of the air box 1. The air intake pipe 9 has multiple branch pipes that are connected to the corresponding air intake hood 7, and the air outlet pipe 10 has multiple branch pipes that are connected to the corresponding air outlet hood 8. A pump 11 is provided in the passage of the air outlet pipe 10 and / or the air intake pipe 9 to provide airflow for the back-blowing dust removal system. With the above-mentioned mechanism, the device can perform real-time filtration during the rotation of the filter disc 5. When the area moves to the position corresponding to the air inlet hood 7 and the air outlet hood 8, the back-blowing system can be activated to blow the dust particles at that position out of the device and remove them, thereby reducing the adhesion of particles on the surface of the filter layer, improving the reusability of the filter layer, and thus greatly extending the service life and maintenance cycle of the filter layer. Moreover, the back-blowing action can be performed in real time during the operation of the device, thereby avoiding the increase in wind resistance caused by particle adhesion, which would lead to a decrease in actual effective power consumption and help avoid the situation where the waste power of the device increases due to increased wind resistance. In some preferred embodiments, in order to increase the filtration surface area of ​​the fiber filter layer, the mesh structure of the upper and lower mesh plates can be set as a folding fan-shaped perforated mesh plate (the cross-section where the arc chord is located is "W" shaped), which can greatly increase the filtration surface. However, it should be noted that the air inlet hood 7 and the air outlet hood 8 are no longer suitable for real-time sealed contact. Planar ribs can be configured in local areas of the mesh plate surface for sealed contact with the air inlet hood 7 and the air outlet hood 8 (that is, a corresponding horizontal plate part is set for close contact). The fan-shaped angle between two adjacent ribs can be configured to match the cross-section of the air inlet hood 7. At this time, real-time backflushing cannot be selected. Instead, intermittent selective backflushing can be performed according to the rotation position of the filter disc 5.

[0044] In some embodiments of the zeolite rotor pre-filter provided by this invention, to facilitate simultaneous control of the rotation of multiple filter discs 5, multiple sets of clamping track plates 4 can be arranged vertically. A drive device 6 is then configured to drive the shafts passing through the multiple filter discs 5 to rotate the corresponding filter discs 5. For filter discs 5 distributed vertically, airflow paths need to be configured for top-to-bottom or bottom-to-top circulation. Lateral air leakage should be avoided to allow dust-laden gas to bypass different filter layers. (Refer to...) Figure 16 As shown, wind baffles 28 are provided inside the air box 1 on both sides of the multiple sets of clamping track plates 4. Each wind baffle 28 and the air box 1 form only one air vent, one of which is located at the upper end of the air box 1 and the other at the lower end. Figure 16 As shown, the lower left side is the dust-laden gas inlet, and the upper right side is the dust-laden gas outlet. The baffle plate 28 should be able to cover the sides of multiple clamping track plates 4 simultaneously, thus ensuring good sealing between the various structures. In some preferred embodiments, perforated supports 30 can be installed at these air vent locations to form connecting supports, thereby improving the stability of the structure and preventing tensile stress from causing structural instability.

[0045] This invention provides a zeolite rotor pre-filter device. To facilitate the later assembly and disassembly of the filter disc 5, each set of clamping track plates 4 can be configured to include an upper clamping plate 401 and a lower clamping plate 402. Specifically, the opposing surfaces of the upper clamping plate 401 and the lower clamping plate 402 are provided with annular track grooves for the filter disc 5 to rotate. As a preferred embodiment, an oil supply system can also be configured in the track grooves to reduce system friction and improve the sealing ability between the filter disc 5 and the upper and lower clamping plates 402. Multiple guide rods penetrating multiple sets of clamping track plates 4 are provided on the air box 1 to ensure that the upper clamping plate 401 and the lower clamping plate 402 can be stably aligned and avoid assembly errors. At the same time, an adjusting rod 13 penetrating multiple clamping track plates 4 is also provided on the air box 1. (Refer to...) Figure 12 As shown, the upper clamping plate 401 is fixedly positioned between the two baffle plates 28. The lower clamping plate 402 can move closer to or further away from the upper clamping plate 401 via a guide rod. Simultaneously, a localized area of ​​the adjusting rod 13 has a threaded structure that engages with the lower clamping plate 402. Each section of the lower clamping plate 402 has a threaded structure, allowing direct adjustment of the lower clamping plate 402's height when the adjusting rod 13 is rotated. An adjusting element 16 for driving the adjusting rod 13 to rotate is provided on the wind box 1. This adjusting element 16 can be manually rotated or controlled by a motor, etc. The specific control method is not limited here. To avoid excessive load on the threaded structure, shims can be placed between adjacent clamping track plates 4, such as... Figure 12 As shown, the padding component may include a sleeve 14 that is slidably sleeved on the guide rod or adjusting rod 13. At this time, a padding component 15 can be threadedly connected to the outside of the sleeve 14. By rotating to adjust the length between the two components, the pressure from the lower clamping plate 402 on the threaded structure on the adjusting rod 13 can be shared, thereby helping to ensure the reliability of the structure.

[0046] This invention provides a zeolite rotor pre-filter. Because different types of pollutant gases contain varying proportions of dust particles of different sizes, if a uniform low rotation speed is used on the filter discs 5, the filter layer corresponding to a higher proportion of impurities will become saturated prematurely, affecting the overall airflow. Conversely, if a uniform high rotation speed is used, the friction loss and additional power consumption of the equipment will increase, which is detrimental to long-term low-cost operation. Therefore, adjusting the rotation speed of different filter discs 5 according to the proportion of dust particles of different sizes in the pollutant gas is necessary to maintain low power consumption. Figures 3-5 as well as Figure 10 , Figure 14 As shown, specifically, each filter disc 5 can be configured with a ring gear 19 at its center, with the teeth of the ring gear 19 facing inwards. Multiple drive gears 20 (distributed vertically) are mounted on the shaft driven by the drive device 6 that runs through multiple filter discs 5. A hollow mounting plate 18 is also fixed on each clamping track plate 4, with a hollow structure in the middle to avoid the position of the drive shaft. Finally, multiple planetary gears 21 are rotatably mounted on the hollow mounting plate 18, so that each planetary gear 21 meshes with the inner teeth of the ring gear 19 and the outer gear of the drive gear 20 at the corresponding height position. In this way, the indirect transmission drive of the filter discs 5 is achieved by using the connecting transmission action of the planetary gears 21. At this time, the speed ratio of each filter disc 5 can be adjusted by configuring the transmission ratio of the drive gear 20 and the ring gear 19, so as to make it more suitable for adapting to the type of polluted gas to achieve the optimal low power consumption speed, thereby reducing the friction loss of the structure while ensuring efficient gas treatment.

[0047] This invention provides a zeolite rotor pre-filter. Considering that organic waste gas is typically at a high temperature when entering the equipment, contact between the high-temperature gas and the fiber filter layer accelerates the aging of the filter layer, thus reducing its lifespan. Since spray cooling of the gas results in a large amount of water vapor entering the fiber filter layer, this moisture may accelerate clogging and affect its performance. Therefore, spray cooling is not directly suitable for cooling organic waste gas. To make spray cooling applicable to this dust removal system, the following... Figure 9 , Figure 16 as well as Figure 18As shown, a low-temperature chamber 22 is installed in the cavity between the primary filter assembly 2 and its adjacent baffle 28. An air inlet and an air outlet are installed on the low-temperature chamber 22. The air inlet serves as the sole outlet of the cavity at the air outlet end of the primary filter assembly 2, and the air outlet serves as the sole inlet of the cavity at the air outlet end of the baffle 28. This means that gas can only circulate through the low-temperature chamber 22. A guide duct 23 is installed at the air inlet position inside the low-temperature chamber 22, with its outlet pointing downwards into the chamber. Coolant is supplied below the low-temperature chamber 22, overflowing the outlet of the guide duct 23, with the coolant level controlled to be lower than the air outlet. In this configuration, high-temperature gas can only circulate by blowing bubbles into the low-temperature chamber 22 through the guide duct 23. However, due to the short heat exchange time and small heat exchange area of ​​the bubbles, their actual efficiency is far lower than that of the spray method. Figure 9 as well as Figure 16 As shown, multiple nozzles 24 are installed in the guide duct 23 via the spray pipe 26. That is, before the gas forms bubbles in the coolant, it will be cooled by spraying. The liquid droplets formed by the spray will flow through the guide duct 23 to the low temperature chamber 22 and mix with the coolant below. This achieves efficient cooling of the gas while reducing the water vapor content in the bubbles. This is beneficial for the subsequent adsorption of organic matter by the zeolite rotor, while reducing the contact temperature between the dust-laden gas and the fiber filter layer, thereby improving the service life of the fiber filter layer.

[0048] This invention provides a zeolite rotor pre-filter device. To prevent excessive accumulation of coolant and achieve efficient coolant circulation, the coolant flows out from the bottom of the cryogenic chamber 22. An outlet pipe 25 is installed at the bottom of the cryogenic chamber 22, and the outlet pipe 25 and the spray nozzle 26 are connected by a circulation pump. For cooling the coolant, a cooling device can be installed on the connecting pipe between the outlet pipe 25 and the spray nozzle 26. The specific cooling method is not limited here; a refrigerator or a semiconductor cooling chip can be used to cool the liquid passage. To achieve efficient heat exchange of bubbles in the coolant, a decomposition mesh plate 27 can be installed at the lower air outlet of the guide duct 23. This decomposition mesh plate 27 is used to separate large bubbles into more small bubbles, increasing the gas-liquid contact area so that efficient heat exchange can occur in the coolant below the cryogenic chamber 22, and further reducing the water vapor content in the bubbles.

[0049] This invention provides a zeolite rotor pre-filter device. To monitor the normal operation of each backflushing system in real time, solenoid valves and pressure sensors are installed on the branch pipes to detect the pressure of the backflushing gas. Since the dust-laden gas in the bubbles still carries a small amount of water vapor after leaving the low-temperature chamber 22, temperature and humidity sensors and pressure sensors are installed in the air inlet chamber of each filter disc 5 to detect whether the humidity in each chamber is normal. If the humidity in the chamber is too high, the water vapor content entering the corresponding fiber filter layer will also increase. In order to allow the water to be removed from the fiber filter layer, the fiber filter layer can be backflushed under the premise of ensuring sufficient temperature. At this time, an air heating oven 17 can be set at the air inlet end of the air inlet pipe 9. The air heating oven 17 is used to increase the temperature (the heating method can be a thermal resistance wire, etc.) to accelerate the evaporation of water vapor. However, the blowing temperature should be controlled not to be too high to avoid accelerating the aging of the fiber filter layer. Example 2

[0050] The present invention provides a zeolite rotor pre-filtration method, which uses the above-mentioned pre-filtration device, and the method includes the following steps:

[0051] First, filter discs 5 are configured in the air box 1. There are three specifications, and they are used to filter particles with a particle size greater than 5um, between 1-5um and 0.3-1um respectively from upstream to downstream of the air path. The density of the fiber filter layer can be controlled.

[0052] Samples of customer exhaust gas are taken, and the proportions of particles with diameters greater than 5 μm, between 1 and 5 μm, and between 0.3 and 1 μm in the exhaust gas samples are calculated and defined as X:Y:Z.

[0053] The transmission ratio of the drive gear 20 and the ring gear 19 corresponding to the filter disk 5 of different height layers is changed according to the impurity content of different particle sizes, so that the rotational speed ratio of the filter disk 5 of the corresponding layer approaches X:Y:Z (because the gear transmission ratio is non-linearly controlled, it can be made close to the corresponding parameter ratio).

[0054] Install the equipment and its gear assembly according to the designed transmission ratio, and perform ventilation and filtration. At the same time, open the air passages in the air intake hood 7 and air outlet hood 8 to perform real-time backflushing.

[0055] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A zeolite rotor pre-filter device, comprising a bellows (1), wherein the front end of the bellows (1) is provided with an air inlet and a primary filter plate assembly (2), and the rear end of the bellows (1) is provided with a zeolite rotor adsorption assembly (3), characterized in that, An integrated adsorption-desorption filter assembly is provided between the primary filter plate assembly (2) and the zeolite rotary adsorption assembly (3). The integrated adsorption-desorption filter assembly includes multiple sets of clamping track plates (4). Each set of clamping track plates (4) is sealed and rotatably fitted with a filter disc (5). The filter disc (5) includes an upper screen plate, a lower screen plate, and a filter layer filled between the upper screen plate and the lower screen plate. The filter layer covers the hollow area opened in the middle of the corresponding set of clamping track plates (4). The air path of the air box (1) can only blow from the hollow area channel to the zeolite rotary adsorption assembly (3). The air box (1) is also equipped with a device for driving multiple filters. A drive device (6) for rotating the disc (5) is provided. An air inlet hood (7) is installed at the air outlet position of each of the filter discs (5), and an air outlet hood (8) is installed at the air inlet position of each of the filter discs (5). The air outlet of the air inlet hood (7) and the air inlet of the air outlet hood (8) are arranged opposite to each other. An air inlet pipe (9) and an air outlet pipe (10) are provided on the outside of the air box (1). Multiple branch pipes are provided on the air inlet pipe (9) and connected to the air inlet hood (7) respectively. Multiple branch pipes are provided on the air outlet pipe (10) and connected to the air outlet hood (8). A pump (11) is provided on the passage of the air outlet pipe (10) and / or the air inlet pipe (9). Multiple sets of clamping track plates (4) are arranged vertically. The driving device (6) is used to drive the shaft that passes through multiple filter discs (5) to drive the corresponding filter discs (5) to rotate. Inside the air box (1) and on both sides of the multiple sets of clamping track plates (4), there are baffles (28). Each baffle (28) and the air box (1) form only one air outlet. One air outlet is located at the upper end of the air box (1) and the other air outlet is located at the lower end of the air box (1). The baffle (28) can cover the sides of multiple clamping track plates (4) at the same time. An annular gear ring (19) is provided at the center of the surface of each of the filter discs (5). The teeth of the annular gear ring (19) are designed to face inward. Multiple drive gears (20) are mounted on the shaft that is driven by the drive device (6) and passes through multiple filter discs (5). A hollow mounting plate (18) is also fixedly provided on each of the clamping track plates (4). Multiple planetary gears (21) are rotatably provided on the hollow mounting plate (18). Each planetary gear (21) is meshed with the inner teeth of the annular gear ring (19) and the outer gear ring of the drive gear (20) at the corresponding height position.

2. The zeolite rotor pre-filter device according to claim 1, characterized in that, Each set of clamping track plates (4) includes an upper clamping plate (401) and a lower clamping plate (402). The opposite surfaces of the upper clamping plate (401) and the lower clamping plate (402) are provided with annular track grooves for the filter disc (5) to rotate. The air box (1) is provided with a plurality of guide rods that pass through the multiple sets of clamping track plates (4). The air box (1) is also provided with an adjusting rod (13) that passes through the multiple clamping track plates (4). The upper clamping plate (401) is fixedly set between two baffle plates (28). The lower clamping plate (402) can move closer to or further away from the upper clamping plate (401) through the guide rod. A local area of ​​the adjusting rod (13) is provided with a threaded structure that can cooperate with the lower clamping plate (402). The air box (1) is also provided with an adjusting component (16) for driving the adjusting rod (13) to rotate.

3. The zeolite rotor pre-filter device according to claim 2, characterized in that, A pad is provided between each of the two adjacent clamping track plates (4). The pad includes a sleeve (14) that is slidably sleeved on the guide rod or adjusting rod (13). A shim (15) is threadedly connected to the outside of the sleeve (14).

4. The zeolite rotor pre-filter device according to claim 1, characterized in that, A low-temperature chamber (22) is provided in the cavity between the primary filter plate assembly (2) and its adjacent baffle plate (28). The low-temperature chamber (22) is provided with an air inlet and an air outlet. The air inlet serves as the only air outlet of the air outlet cavity of the primary filter plate assembly (2), and the air outlet serves as the only air inlet of the air outlet cavity where the baffle plate (28) is located. A guide duct (23) is provided at the air inlet position inside the low-temperature chamber (22). The air outlet of the guide duct (23) points to the lower position inside the low-temperature chamber (22). Coolant is provided below the air outlet of the guide duct (23). The liquid level of the coolant is lower than the air outlet. Multiple nozzles (24) are provided inside the guide duct (23) through a spray pipe (26).

5. The zeolite rotor pre-filter according to claim 4, characterized in that, The bottom of the low-temperature chamber (22) is provided with a liquid outlet pipe (25), and the liquid outlet pipe (25) and the spray pipe (26) are connected by a circulation pump. A cooling device is also provided on the connecting pipe between the liquid outlet pipe (25) and the spray pipe (26).

6. The zeolite rotor pre-filter according to claim 4, characterized in that, A decomposition mesh plate (27) is provided at the lower air outlet position of the guide duct (23).

7. The zeolite rotor pre-filter according to claim 1, characterized in that, The branch pipe is equipped with a solenoid valve and a pressure sensor. Each filter disc (5) is equipped with a temperature and humidity sensor and a pressure sensor in the air inlet chamber. The air inlet of the air inlet pipe (9) is equipped with an air heating oven (17).

8. A zeolite rotor pre-filtration method, employing the zeolite rotor pre-filtration device as described in claim 5, characterized in that, The method includes the following steps: The filter disc (5) is configured in the air box (1) and has three specifications, which are used to filter particles with a particle size greater than 5 μm, between 1-5 μm and 0.3-1 μm respectively from upstream to downstream of the air path; Samples of exhaust gas were collected, and the proportions of particles with diameters greater than 5 μm, between 1 and 5 μm, and between 0.3 and 1 μm in the exhaust gas samples were calculated. The transmission ratio of the drive gear (20) and the ring gear (19) of the filter disk (5) corresponding to different height layers is changed according to the impurity content of different particle sizes; The equipment and its gear assembly are installed according to the designed transmission ratio and ventilated and filtered. At the same time, the air passages of the air intake hood (7) and the air outlet hood (8) are opened to perform real-time backflushing.

Images