High-efficiency wire mesh demister for refining tower

Abstract

This invention discloses a high-efficiency wire mesh demister for refining towers, belonging to the field of chemical refining technology. A drive component drives the wire mesh demister assembly, causing it to rotate and reciprocate up and down under the guidance of a guide component. This allows the entire wire mesh layer to contact the rising airflow within the tower from all directions, effectively balancing the gas-liquid load in different areas of the wire mesh layer and avoiding long-term accumulation of dirt and airflow deviation in fixed locations. The upward movement of the top ring drives the lifting component, which, through a limiting component, lifts the striking component. Once the top column detaches from the striking component, it rapidly impacts the grid frame at the top of the wire mesh demister assembly via a striking plate. This high-frequency reciprocating impact, combined with the continuous rotation of the wire mesh demister assembly, achieves multi-directional cleaning by striking the assembly, dislodging viscous adhesive, clumps, and accumulated liquid films from the surface of the wire mesh layer. This solves the problems of clogging, dirt accumulation, and coking associated with traditional wire mesh, improving the gas-liquid separation efficiency and operational stability of the refining tower.

Description

Technical Field

[0001] This invention relates to the field of chemical refining technology, specifically to a high-efficiency wire mesh demister for refining towers. Background Technology

[0002] In the chemical refining field, core processes such as distillation, rectification, and absorption are all completed within refining towers, where the gas and liquid phases come into full contact to achieve mass transfer and separation. However, during the ascent of the gas phase within the tower, a large number of liquid droplets are inevitably entrained, forming a mist entrainment phenomenon. Excessive mist entrainment leads to insufficient gas phase purity, decreased product yield, and increased material loss. It can also interfere with the operation of downstream equipment such as compressors and heat exchangers, and in severe cases, cause flooding and crossflow, forcing the unit to shut down for maintenance and resulting in significant economic losses. Therefore, efficiently removing mist from the gas phase and ensuring gas-liquid separation is crucial for the stable and efficient operation of refining towers. As a core device for inertial collision-type gas-liquid separation, the wire mesh demister works by causing droplets to collide and adhere to the wire mesh due to inertia as the mist-laden gas passes through it from bottom to top. The droplets gradually gather and grow, and when the weight of the droplets exceeds the combined force of the gas velocity and surface tension, they fall back into the tower, achieving gas-liquid separation.

[0003] The gas phase inside refining towers often carries impurities such as catalyst powder, coking particles, and colloids. The uniform pore structure of traditional wire mesh is easily blocked by impurities and viscous liquid films, leading to a rapid increase in equipment pressure drop, gas-liquid flow deviation within the tower, reduced throughput, and even fluctuations in tower operation. After blockage, the maintenance cycle is short, requiring frequent shutdowns for repair. Currently, most commonly used wire mesh demisters in refining towers are standard flat or corrugated structures. Traditional wire mesh relies solely on inertial collision and direct interception mechanisms, which are poorly adaptable to low-gas-velocity and high-gas-velocity fluctuation conditions. At low gas velocities, droplets lack sufficient inertia to be effectively captured, while at high gas velocities, secondary entrainment of droplets easily occurs, affecting the demister effect. Summary of the Invention

[0004] The purpose of this invention is to provide a high-efficiency wire mesh demister for refining towers, in order to solve the problems mentioned in the background art, such as the uniform pore structure of traditional wire mesh being easily blocked by impurities and viscous liquid films; the wire mesh relying solely on inertial collision and direct interception mechanisms having poor adaptability to low and high gas velocity fluctuations, insufficient droplet inertia at low gas velocities preventing effective capture, and the tendency for secondary droplet entrainment at high gas velocities.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A high-efficiency wire mesh demister for a refining tower includes a wire mesh demister assembly. A tower body is provided outside the wire mesh demister assembly. A top ring is fixedly connected to the top of the wire mesh demister assembly. A guide assembly is slidably connected to the outside of the wire mesh demister assembly. Support cylinders are fixedly connected to the top and bottom of the guide assembly, respectively. The two support cylinders are fixed at the upper part of the tower body. A drive assembly is fixedly installed at the center of the bottom of the wire mesh demister assembly. One end of the drive assembly passes through the lower support cylinder and the tower body and is fixedly fitted with a motor. The motor is installed outside the tower body. A gas phase inlet and an exhaust valve are provided at the lower part of the outside of the tower body. The exhaust valve is located below the gas phase inlet, and an exhaust outlet is provided at the top of the tower body. Three fixing boxes are fixed to the edge of the inner wall of the upper support cylinder. A lifting assembly slides through the fixing boxes. A top plate is fixed to the top of the lifting assembly. The top plate is L-shaped and fixed to... Inside the fixed box, the bottom end of the lifting component overlaps with the top ring. A limiting component is fixed on one side of the top plate. The limiting component is fixedly connected to both sides of the inner wall of the fixed box. A striking component is slidably connected inside the limiting component. The bottom end of the striking component penetrates the bottom of the fixed box and is located above the wire mesh defoaming component. A sliding groove is opened inside the striking component. A telescopic component slides through the sliding groove. The telescopic component overlaps with the opposite end of the lifting component. Support rods are fixed between the three fixed boxes. A center seat is fixed at the opposite end of the three support rods. A sealing component slides through the center seat. The bottom end of the sealing component is fixed to the middle of the wire mesh defoaming component. An air guide hood overlaps the top of the sealing component. The air guide hood is fixed on the upper support cylinder and has a conical design. An air outlet is opened in the tip of the top of the air guide hood, and the sealing component corresponds to the position of the air outlet.

[0006] As a further embodiment of the present invention, the wire mesh defogging assembly includes two sets of grid frames and a support ring. A wire mesh layer is provided between the two sets of grid frames. The grid frames and the wire mesh layer are embedded inside the support ring. Two reinforcing ribs are snapped between the two grid frames, and the reinforcing ribs are used to install the wire mesh layer between the two grid frames by bolts. The wire mesh layer adopts a gradient pore structure with sparse outer and dense inner, sparse bottom and dense top. The bottom layer uses a large-pore coarse wire mesh to pre-separate large droplets and solid impurities, the middle layer uses a medium-pore wire mesh to capture medium droplets, and the top layer uses a fine corrugated wire mesh to capture ultrafine droplets.

[0007] As a further embodiment of the present invention, the guiding assembly includes a guide cylinder, which is fixed between two upper and lower support cylinders. A guide groove is provided inside the guide cylinder. The guide groove is designed in a wave shape and is formed by several V-shaped grooves surrounding it. The support ring is sleeved inside the guide cylinder, and several sliding pillars are fixed outside the support ring. The sliding pillars are slidably connected in the guide groove.

[0008] As a further embodiment of the present invention, the drive assembly includes a protective shell, one side of which is fixed to the inner wall of the lower support cylinder. A worm gear is rotatably connected inside the protective shell via a bushing, and a worm is externally engaged with the worm gear. The end of the worm is slidably connected inside the protective shell via a bushing. One end of the worm passes through the protective shell, the lower support cylinder, and the tower body and is fixed to the output shaft of the motor. A rectangular slide rod is fixedly connected to the middle of the worm gear, and a column is sleeved on the outside of the rectangular slide rod. The top of the column is fixedly connected to the bottom of the grid frame. A rectangular sliding groove is opened inside the column, and the rectangular slide rod is slidably connected in the sliding groove.

[0009] As a further embodiment of the present invention, the lifting assembly includes a lifting rod that slides through a fixed box, and a ball bearing is installed at the bottom end of the lifting rod. The ball bearing overlaps the top ring. A telescopic rod is fixed in the groove at the top end of the lifting rod. The top end of the telescopic rod is fixed in the top plate. A first spring is sleeved on the outside of the telescopic rod. The first spring is fixed on the groove and the fixed section of the telescopic rod. A top column is installed on the side of the lifting rod.

[0010] As a further embodiment of the present invention, the limiting component includes a limiting box, which is fixed to the inner wall of the fixing box and the top plate. The striking component slides through the limiting box. A blocking rod is fixed at the openings at both ends of the limiting box. A guide block is fixed on the side of the limiting box near the lifting rod. The bottom of the guide block is an inclined surface. The guide block is located above the top column.

[0011] As a further embodiment of the present invention, the striking assembly includes a slide block slidably connected within a limiting box. An extension rod is fixed to the bottom of the slide block, and the bottom of the extension rod penetrates the limiting box and is fixed to a striking plate. The striking plate has several ventilation holes and is positioned above the wire mesh defoaming assembly. The slide block and the blocking rod are positioned correspondingly. A groove is formed inside the slide block, and a second spring is fixed to the top of the slide block. The second spring is fixed to the top of the inner wall of the top plate.

[0012] As a further embodiment of the present invention, the telescopic component includes a slider that slides through a groove. One end of the slider that passes through the groove is an inclined surface and the bottom is a horizontal surface. The slider and the guide block are designed to be offset, with the slider located below the guide block. The top post overlaps the horizontal surface at the bottom of the slider. A guide post is fixed to the side of the slider. The guide post and the guide block are on the same vertical line. The inclined surface at the bottom of the guide block corresponds to the guide post. A third spring is fixed to one side of the inner wall of the groove where the slider is located.

[0013] As a further embodiment of the present invention, the sealing assembly includes a sealing block, which is composed of two symmetrically arranged conical blocks and located below the air outlet. A sliding rod is fixed to the bottom of the sealing block, and a sliding cylinder is slidably sleeved on the outside of the sliding rod. The bottom end of the sliding cylinder passes through the central seat and is fixed to the middle of the wire mesh defoaming assembly. A fourth spring is fixed between the bottom end of the sliding rod and the inner wall of the sliding cylinder.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention drives the wire mesh demister assembly to work through a drive component, causing it to rotate and reciprocate up and down under the action of the guide component. This allows the entire wire mesh layer to fully contact the rising airflow inside the tower, effectively balancing the gas-liquid load in different areas of the wire mesh layer and avoiding the problems of long-term dirt accumulation and airflow deviation in fixed positions. The upward movement of the top ring drives the lifting component to work. The lifting component lifts the striking component through the limiting component. When the top column disengages from the striking component, the wire mesh demister assembly drives the top ring to move to the upper limit position, and the lifting rod moves upward to its maximum stroke. At this time, the top column completely disengages from the limiting support of the slider, and the second spring instantly... Releasing elastic potential energy, the slide block is quickly pulled down along the limit box and accelerated. Through the extension rod, the bottom striking plate is driven to quickly strike the grid frame at the top of the wire mesh demister assembly. The ventilation holes on the surface of the striking plate can ensure normal airflow without affecting the demister operation. At the same time, through high-frequency reciprocating striking, combined with the continuous rotation of the wire mesh demister assembly, the purpose of multi-directional striking and cleaning of the wire mesh demister assembly is achieved. The viscous glue, clumps of impurities, and accumulated liquid film adhering to the surface of the wire mesh layer are shaken off, which completely solves the problems of easy clogging, dirt accumulation and coking of traditional wire mesh, and improves the gas-liquid separation efficiency and equipment operation stability of the refining tower. 2. This invention, during the simultaneous upward movement and tapping of the wire mesh demister assembly for cleaning, drives the top sealing assembly to rise as a whole. The central seat provides sliding support to the outside of the sliding cylinder, improving its vertical movement stability. The sealing block, composed of double conical blocks, fits tightly to seal the air outlet at the top of the air guide hood. The conical air guide hood is fixed inside the upper support cylinder, which can gather and guide the rising airflow. When the air outlet is completely blocked, an air storage chamber is formed between the air guide hood and the wire mesh demister assembly. The continuously rising airflow cannot be discharged normally, causing the gas inside the air storage chamber to be continuously compressed and the air pressure to rise. The high-pressure gas forms a downward high-pressure blowing force on the residual liquid and fine dust impurities attached to the surface and pores of the wire mesh demister assembly. This, combined with the mechanical vibration of the top tapping, creates a composite cleaning effect of upward tapping and downward blowing, which can effectively clean the fine impurities embedded in the deep pores of the wire mesh and prevent impurities from accumulating and clogging the pores. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the support cylinder of the present invention;

[0018] Figure 3 This is a schematic diagram of the cross-sectional structure of the air guide cover of the present invention;

[0019] Figure 4 This is a schematic diagram of the structure of the driving component of the present invention;

[0020] Figure 5 This is a schematic diagram of the sealing component of the present invention;

[0021] Figure 6 This is a schematic diagram of the structure of the wire mesh defogging assembly of the present invention;

[0022] Figure 7 This is a schematic diagram of the structure of the wire mesh defogging assembly and the guiding assembly of the present invention;

[0023] Figure 8 This is a schematic diagram of the unfolded structure of the wire mesh defogging assembly of the present invention;

[0024] Figure 9 This is a schematic diagram of the structure of the striking plate of the present invention;

[0025] Figure 10 This is a schematic diagram of the lifting assembly of the present invention;

[0026] Figure 11 This is a schematic diagram of the structure of the limiting component of the present invention;

[0027] Figure 12 This is a schematic diagram of the structure of the telescopic component of the present invention.

[0028] The attached diagram lists the components represented by each number as follows: 1. Wire mesh demisting assembly; 1001. Grating frame; 1002. Wire mesh layer; 1003. Reinforcing rib; 1004. Support ring; 1005. Sliding column; 2. Top ring; 3. Guide assembly; 301. Guide cylinder; 302. Guide groove; 4. Support cylinder; 5. Drive assembly; 501. Protective shell; 502. Worm gear; 503. Worm; 504. Rectangular sliding rod; 505. Column; 506. Sliding groove; 6. Motor; 7. Tower body; 8. Gas phase inlet; 9. Outlet; 10. Discharge valve; 11. Fixing box; 12. Lifting assembly; 121. Lifting rod; 122. Ball bearing; 123. Telescopic rod ; 124. First spring; 125. Top column; 13. Top plate; 14. Limiting assembly; 141. Limiting box; 142. Blocking rod; 143. Guide block; 15. Striking assembly; 151. Slide seat; 152. Extension rod; 153. Striking plate; 154. Vent hole; 155. Second spring; 16. Slide groove; 17. Telescopic assembly; 171. Slider; 172. Guide column; 173. Third spring; 18. Support rod; 19. Center seat; 20. Sealing assembly; 201. Sealing block; 202. Sliding rod; 203. Slide cylinder; 204. Fourth spring; 21. Air guide cover; 22. Air outlet. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Please see Figures 1-12 The present invention provides a technical solution:

[0031] A high-efficiency wire mesh demister for a refining tower includes a wire mesh demister assembly 1. The wire mesh demister assembly 1 includes two sets of grid frames 1001 and a support ring 1004. A wire mesh layer 1002 is provided between the two sets of grid frames 1001. The grid frames 1001 and the wire mesh layer 1002 are embedded inside the support ring 1004. Two reinforcing ribs 1003 are snapped between the two grid frames 1001. The reinforcing ribs 1003 are used to install the wire mesh layer 1002 between the two grid frames 1001 by bolts. The wire mesh layer 1002 adopts a gradient pore structure with a sparse outer layer and a dense inner layer, a sparse bottom layer and a dense top layer. The bottom layer uses a large-pore coarse wire mesh to pre-separate large droplets and solid impurities. The middle layer uses a medium-pore wire mesh to capture medium droplets. The top layer uses a fine corrugated wire mesh to capture ultrafine droplets.

[0032] During operation, the misty airflow to be treated passes through the wire mesh layer 1002 from bottom to top. Utilizing a gradient pore structure with a sparse outer layer and a dense inner layer, and a sparse lower layer and a denser upper layer, it achieves staged demisting. The bottom layer of large-pore coarse wire mesh preferentially intercepts large particles and large-diameter droplets carried in the airflow, preventing large impurities from directly clogging the middle and top layers of fine wire mesh. The middle layer of medium-pore wire mesh precisely captures medium-sized droplets in the airflow, completing the main gas-liquid separation operation. The top layer of fine corrugated wire mesh captures residual ultrafine mist in the airflow, completely solving the problem that traditional single-layer uniform wire mesh cannot accommodate multi-diameter droplets and the escape of ultrafine droplets. Simultaneously, the two sets of grid frames 1001, together with bolted reinforcing ribs 1003, provide all-around rigid support for the flexible wire mesh layer 1002, effectively counteracting the vibrations and tensile forces generated by the high-speed airflow impact, preventing deformation, loosening, and collapse of the wire mesh layer 1002.

[0033] The wire mesh demister assembly 1 has a tower body 7 on its exterior. A top ring 2 is fixedly connected to the top of the wire mesh demister assembly 1, and a guide assembly 3 is slidably connected to the exterior of the wire mesh demister assembly 1. Support cylinders 4 are fixedly connected to the top and bottom of the guide assembly 3, and the two support cylinders 4 are fixed at the upper position inside the tower body 7. The guide assembly 3 includes a guide cylinder 301, which is fixed between the upper and lower support cylinders 4. A guide groove 302 is opened inside the guide cylinder 301. The guide groove 302 has a wave-shaped design and is formed by several V-shaped grooves surrounding it. A support ring 1004 is sleeved inside the guide cylinder 301, and several sliding columns 1005 are fixed to the exterior of the support ring 1004. The sliding columns 1005 are slidably connected in the guide groove 302.

[0034] During operation, as the wire mesh demister assembly 1 rotates, the evenly distributed sliding columns 1005 on the outer side of the support ring 1004 always slide and limit the movement of the wavy V-shaped guide groove 302, constraining the movement trajectory of the wire mesh demister assembly 1. This allows it to automatically complete vertical reciprocating lifting and lowering movements while continuously rotating. The smooth guiding structure of the wavy V-shaped groove reduces the sliding friction resistance of the sliding columns 1005, while ensuring that the wire mesh layer 1002 has no dead angles and makes all-round contact with the rising airflow inside the tower, evenly distributing the gas and liquid load in each area of ​​the wire mesh, and improving the overall demister uniformity and operating efficiency.

[0035] A drive assembly 5 is fixedly installed at the center of the bottom of the wire mesh demister assembly 1. One end of the drive assembly 5 passes through the lower support cylinder 4 and the tower body 7 and is fixed with a motor 6. The motor 6 is installed on the outside of the tower body 7. A gas phase inlet 8 and an exhaust valve 10 are provided at the lower position of the outside of the tower body 7. The exhaust valve 10 is located below the gas phase inlet 8. The exhaust valve 10 provided at the bottom of the tower body 7 can periodically discharge the sludge and impurities deposited in the tower, further ensuring the cleanliness of the working conditions inside the tower and the stable operation.

[0036] The drive assembly 5 includes a protective shell 501. One side of the protective shell 501 is fixed to the inner wall of the lower support cylinder 4. A worm gear 502 is rotatably connected inside the protective shell 501 via a bushing. A worm 503 is meshed with the outside of the worm gear 502. The end of the worm 503 is slidably connected inside the protective shell 501 via a bushing. One end of the worm 503 passes through the protective shell 501, the lower support cylinder 4, and the tower body 7 and is fixed to the output shaft of the motor 6. A rectangular slide rod 504 is fixedly connected to the middle of the worm gear 502. A column 505 is sleeved on the outside of the rectangular slide rod 504. The top of the column 505 is fixedly connected to the bottom of the grid frame 1001. A rectangular sliding groove 506 is opened inside the column 505. The rectangular slide rod 504 is slidably connected in the sliding groove 506.

[0037] During operation, motor 6 drives worm gear 503 to rotate at a constant speed. Through the meshing transmission principle of worm wheel 502 and worm gear 503, the horizontal rotational power of motor 6 is converted into the vertical rotational power of worm wheel 502, ensuring uniform and stable power output. When worm wheel 502 rotates, it drives the central rectangular slide bar 504 to rotate synchronously. The rectangular slide bar 504 cooperates with the rectangular sliding groove 506 inside column 505, which can effectively prevent transmission slippage. At the same time, the slide bar slides vertically adaptively in the sliding groove 506, adapting to the up-and-down reciprocating motion of wire mesh demister assembly 1, continuously driving column 505 and top wire mesh demister assembly 1 to complete the combined rotation and lifting motion. Protective shell 501 can provide all-round protection for the internal worm wheel 502 and worm gear 503 transmission structure, isolating moisture and impurities inside the tower and preventing corrosion and jamming of transmission components.

[0038] The top of the tower body 7 is provided with an outlet 9. Three fixing boxes 11 are fixed at the edge of the inner wall of the upper support cylinder 4. A lifting assembly 12 slides through the fixing box 11. The lifting assembly 12 includes a lifting rod 121, which slides through the fixing box 11. A ball bearing 122 is installed at the bottom of the lifting rod 121. The ball bearing 122 overlaps the top ring 2. A telescopic rod 123 is fixed in the groove at the top of the lifting rod 121. The top of the telescopic rod 123 is fixed in the top plate 13. A first spring 124 is sleeved on the outside of the telescopic rod 123. The first spring 124 is fixed on the groove and the fixed section of the telescopic rod 123. A top column 125 is installed on the side of the lifting rod 121.

[0039] During operation, when the wire mesh demisting assembly 1 moves upward, it drives the top ring 2 to move upward synchronously. The top ring 2 is pushed against the bottom end of the lifting rod 121 through the flexible contact of the ball bearings 122. The ball bearings 122 can effectively reduce the sliding friction between the top ring 2 and the lifting rod 121, avoid hard wear, and improve the smoothness of transmission. The lifting rod 121 slides vertically upward along the fixed box 11 under the thrust, compressing the first spring 124 and retracting the telescopic rod 123. At the same time, it drives the side top column 125 to move upward synchronously, providing power support for the subsequent lifting of the striking assembly 15. When the wire mesh demisting assembly 1 drives the top ring 2 to move downward and reset, the first spring 124 releases its elastic potential energy, pushing the lifting rod 121 to quickly move downward and reset. The top column 125 falls back synchronously, completing one lifting cycle.

[0040] A top plate 13 is fixed to the top of the lifting assembly 12. The top plate 13 is L-shaped and fixed inside the fixed box 11. The bottom end of the lifting assembly 12 overlaps with the top ring 2. A limit assembly 14 is fixed to one side inside the top plate 13. The limit assembly 14 is fixedly connected to both sides of the inner wall of the fixed box 11. The limit assembly 14 includes a limit box 141. The limit box 141 is fixed to the inner wall of the fixed box 11 and the top plate 13. The striking assembly 15 slides through the limit box 141. A blocking rod 142 is fixed at the openings at both ends of the limit box 141. A guide block 143 is fixed to the side of the limit box 141 near the lifting rod 121. The bottom of the guide block 143 is an inclined surface. The guide block 143 is located above the top column 125.

[0041] During operation, the limit box 141 provides a vertical directional sliding track for the striking component 15, constraining its movement trajectory and preventing deviation or shaking, ensuring precise alignment of the striking action with the wire mesh defogging component 1. The blocking rods 142 at both ends effectively limit the vertical sliding limit of the striking component 15, preventing it from slipping off. During the upward movement of the lifting component 12, the inclined slope at the bottom of the guide block 143 can cooperate with the telescopic component 17 to compress and guide the guide column 172, causing the telescopic component 17 to retract laterally, providing structural conditions for the instantaneous downward striking action of the striking component 15.

[0042] As a further embodiment of the present invention, a striking component 15 is slidably connected inside the limiting component 14. The bottom end of the striking component 15 penetrates the bottom of the fixing box 11 and is located above the wire mesh defoaming component 1. The striking component 15 includes a slide 151, which is slidably connected inside the limiting box 141. An extension rod 152 is fixed to the bottom of the slide 151. The bottom of the extension rod 152 penetrates the limiting box 141 and is fixed with a striking plate 153. Several ventilation holes 154 are provided in the striking plate 153, and the striking plate 153 is located above the wire mesh defoaming component 1. The position of the slide 151 corresponds to that of the blocking rod 142. A groove 16 is opened inside the slide 151. A second spring 155 is fixed to the top of the slide 151. The second spring 155 is fixed to the top of the inner wall of the top plate 13.

[0043] During operation, as the lifting assembly 12 moves upward, it pushes the telescopic assembly 17 via the top column 125, causing the slide 151 to slide upward along the limit box 141, compressing the second spring 155 to continuously store force, completing the lifting preparation before the impact. When the top column 125 disengages from the limit of the telescopic assembly 17, the second spring 155 instantly releases its elastic potential energy, quickly pulling the slide 151, extension rod 152, and bottom striking plate 153 downward at high speed, impacting the top grid frame 1001 of the wire mesh defogging assembly 1. The vent holes 154 on the surface of the striking plate 153 ensure normal upward airflow inside the tower, enabling simultaneous defogging and cleaning operations without stopping the machine and without affecting production efficiency. The high-frequency reciprocating mechanical impact can completely shake off the viscous glue, clumps of impurities, and thick liquid film adhering to the surface of the wire mesh layer 1002.

[0044] As a further embodiment of the present invention, the inside of the striking component 15 is provided with a sliding groove 16, and a telescopic component 17 slides through the sliding groove 16. The telescopic component 17 overlaps with the opposite end of the lifting component 12. Support rods 18 are fixed between the three fixed boxes 11 respectively, and a center seat 19 is fixed at the opposite end of the three support rods 18. The telescopic assembly 17 includes a slider 171 that slides through the slide groove 16. One end of the slider 171 that passes through the slide groove 16 is an inclined surface and the bottom is a horizontal surface. The slider 171 and the guide block 143 are designed to be offset, and the slider 171 is located below the guide block 143. The top post 125 overlaps the bottom of the slider 171 below the horizontal surface. A guide post 172 is fixed to the side of the slider 171. The guide post 172 and the guide block 143 are on the same vertical line. The inclined surface at the bottom of the guide block 143 corresponds to the guide post 172. A third spring 173 is fixed to one side of the inner wall of the slide groove 16.

[0045] During operation, as the lifting rod 121 drives the lifting column 125 upward, the lifting column 125 adheres to the bottom horizontal surface of the slider 171, stabilizing and pushing the slider 171 and the overall striking assembly 15 upward to accumulate force. Simultaneously, the guide column 172 moves upward synchronously with the slider 171, and after contacting the inclined slope of the guide block 143, it is compressed, causing the slider 171 to slide laterally into the slide groove 16, compressing the third spring 173, thus achieving the adaptive retraction and unlocking of the slider 171. The misalignment design between the slider 171 and the guide block 143 avoids motion interference and ensures smooth sliding. When the lifting column 125 moves upward and disengages from the slider 171, the unlocking is completed, and the striking assembly 15 instantly falls to strike. After the lifting rod 121 returns to its original position and moves downward, the third spring 173 releases its elastic force to push the slider 171 and guide column 172 back to their original positions, so that the bottom horizontal surface of the slider 171 is once again above the lifting column 125, completing the reset preparation. This achieves fully automatic cyclic unlocking and reset without manual intervention.

[0046] A sealing component 20 slides through the center seat 19. The bottom end of the sealing component 20 is fixed to the middle of the wire mesh defoaming component 1. An air guide hood 21 overlaps the top of the sealing component 20. The air guide hood 21 is fixed on the upper support cylinder 4 and has a conical design. An air outlet 22 is opened in the tip of the top of the air guide hood 21, and the sealing component 20 and the air outlet 22 are positioned corresponding to each other.

[0047] As a further embodiment of the present invention, the sealing assembly 20 includes a sealing block 201, which is composed of two symmetrically arranged conical blocks and located below the air outlet 22. A sliding rod 202 is fixed to the bottom of the sealing block 201, and a sliding cylinder 203 is slidably sleeved on the outside of the sliding rod 202. The bottom end of the sliding cylinder 203 passes through the center seat 19 and is fixed to the middle of the wire mesh defoaming assembly 1. A fourth spring 204 is fixed between the bottom end of the sliding rod 202 and the inner wall of the sliding cylinder 203.

[0048] During operation, as the wire mesh demisting assembly 1 moves upward to clean, it simultaneously drives the slide cylinder 203 and the sliding rod 202 to move upward as a whole, compressing the fourth spring 204. This causes the top double-cone sealing block 201 to tightly fit against the air outlet 22 at the top of the air guide hood 21, blocking the normal airflow discharge channel. The conical sealing block 201 is structurally compatible with the conical air guide hood 21, providing good sealing performance. It can quickly form a sealed air storage cavity between the air guide hood 21 and the wire mesh demisting assembly 1, allowing the continuously rising airflow to be compressed and stored within the cavity, forming a high-pressure airflow. This high-pressure airflow exerts a downward high-pressure blowing force on the fine dust and residual liquid film embedded inside the pores of the wire mesh layer 1002. Combined with the mechanical knocking from the top, this creates a combined cleaning effect of knocking from above and blowing from below, thoroughly cleaning deep-seated hidden impurities.

[0049] Working principle of this invention:

[0050] The refining process gas to be purified is uniformly introduced into the interior of tower 7 through the gas inlet 8 at the bottom of tower 7. The gas flows from bottom to top, carrying a large number of oil and gas droplets of different sizes, colloidal impurities and trace solid particles, and actively rushes towards the wire mesh demisting component 1 in the middle of tower 7. Because the wire mesh layer 1002 adopts a gradient pore structure with a sparse outer layer and a dense inner layer, a sparse bottom layer and a dense top layer, the bottom layer uses a large-diameter coarse wire mesh to pre-separate large droplets and solid impurities, the middle layer uses a medium-diameter wire mesh to capture medium-sized droplets, and the top layer uses a fine corrugated wire mesh to capture ultra-fine droplets, thus completing multi-stage gas-liquid separation. The clean gas after removing droplets and impurities continues to flow upward and is finally discharged outward through the outlet 9 at the top of tower 7, completing the basic demisting operation. In addition, the reinforcing rib 1003 is bolted to install the wire mesh layer 1002 between two grid frames 1001, which greatly improves the structural stability of the wire mesh layer 1002, avoids the wire mesh from deforming and collapsing due to the impact of high-speed airflow, and ensures long-term demisting accuracy.

[0051] While the equipment is continuously demisting, the motor 6 drives the worm gear 503 to rotate. Through the meshing transmission of the worm wheel 502 and the worm gear 503, the worm wheel 502 is driven to rotate at a constant speed. The rectangular slide bar 504 fixed in the middle of the worm wheel 502 rotates synchronously. The rectangular slide bar 504 slides and engages in the rectangular sliding groove 506 inside the column 505, which synchronously drives the column 505 and the wire mesh demisting assembly 1 at the top to generate rotational torque, thereby driving the wire mesh demisting assembly 1 at the top to rotate. At the same time, the support ring 1004 on the outside of the wire mesh demisting assembly 1 is sleeved inside the guide cylinder 301. The slide column 1005 outside the support ring 1004 slides against the guide groove 302 with a wave-shaped and V-shaped enclosed structure, so that the wire mesh demisting assembly 1 can move up and down in conjunction with the trajectory of the guide groove 302 while rotating. This allows the wire mesh layer 1002 to contact the rising airflow in the tower in all directions, effectively balancing the gas and liquid load in each area of ​​the wire mesh layer 1002 and avoiding the problems of long-term dirt accumulation and airflow deviation in fixed positions.

[0052] During the reciprocating motion of the wire mesh defogging assembly 1, the top ring 2 fixed at its top moves synchronously, thereby linking the lifting assembly 12 and the striking assembly 15 above to complete the automatic striking and cleaning action. When the top ring 2 moves upward, the top of the top ring 2 comes into contact with the ball bearing 122 at the bottom of the lifting rod 121, continuously pushing the lifting rod 121 to slide upward along the fixed box 11. The lifting rod 121 compresses the first spring 124, causing the top telescopic rod 123 to retract. At the same time, the top column 125 on the side of the lifting rod 121 moves upward synchronously. During the upward movement of the top column 125, it overlaps with the bottom horizontal surface of the slider 171 of the telescopic assembly 17, pushing the slider 171 upward. The slide block 151 moves upward inside the limiting box 141, allowing it to compress the second spring 155. The slider 171 then moves the extension rod 152 and the striking plate 153 upward. During this process, the slider 171 simultaneously moves the guide post 172 upward. As the guide post 172 moves upward and contacts the inclined surface at the bottom of the guide block 143, the inclined slope at the bottom of the guide block 143 compresses the guide post 172, causing the guide post 172 to move the slider 171 laterally. The slider 171 then moves into the groove 16 and compresses the third spring 173. Because the slider 171 and the guide block 143 are designed to be offset, the movement trajectory of the slider 171 will not be interfered with.

[0053] When the top post 125 is completely disengaged from the slider 171, the wire mesh defogging assembly 1 moves the top ring 2 to its upper limit position, and the lifting rod 121 moves upward to its maximum stroke. At this time, the top post 125 is completely disengaged from the limiting support of the slider 171, and the second spring 155 instantly releases its elastic potential energy, quickly pulling the slide block 151 downward along the limiting box 141 and accelerating its slide. Through the extension rod 152, it drives the bottom striking plate 153 to quickly strike the grid frame 1001 at the top of the wire mesh defogging assembly 1. The ventilation holes 154 on the surface of the screen can ensure normal airflow and not affect the defoaming operation. At the same time, the high-frequency reciprocating tapping, combined with the continuous rotation of the wire mesh defoaming component 1, can achieve the purpose of multi-directional tapping and cleaning of the wire mesh defoaming component 1, shaking off the viscous glue, clumps of impurities and accumulated liquid film attached to the surface of the wire mesh layer 1002. Moreover, the blocking rods 142 at both ends of the limit box 141 can limit the sliding stroke of the slide 151, prevent the tapping component 15 from derailing and failing, and ensure that the tapping action is stable and controllable.

[0054] After the tapping operation is completed, the wire mesh defoaming assembly 1 moves downward. Combined with the elastic force of the first spring 124, this causes the lifting rod 121 to move the top column 125 downward and return to its initial position. Simultaneously, after the top column 125 disengages from the guide column 172, the elastic force of the third spring 173 compresses the slider 171, causing it to return to its initial position, facilitating the next operation of the lifting assembly 12 to drive the tapping assembly 15. During the simultaneous upward tapping and cleaning process of the wire mesh defoaming assembly 1, the top sealing assembly 20 is lifted as a whole. The central seat 19 provides sliding support to the outside of the sliding cylinder 203, improving its vertical movement stability. The sealing block 201, composed of double conical blocks, fits tightly to seal the air outlet 22 at the top of the air guide hood 21. The conical air guide hood 21 is fixed inside the upper support cylinder 4 and can gather and guide the rising airflow. When the air outlet 22 is completely blocked, an air storage chamber is formed between the air guide hood 21 and the wire mesh demisting component 1. The continuously rising airflow cannot be discharged normally, causing the gas inside the air storage chamber to be continuously compressed and the air pressure to rise. The high-pressure gas forms a downward high-pressure blowing force on the residual liquid and fine dust impurities attached to the surface and pores of the wire mesh demisting component 1, which, together with the mechanical vibration of the top knocking, forms a composite cleaning effect of knocking up and blowing down.

[0055] When the drive component 5 moves the wire mesh defoaming component 1 downward to reset, the sealing block 201 moves down with the sliding rod 202 and stretches the fourth spring 204, causing the sealing block 201 to disengage from the air outlet 22, releasing the sealing limit on the air guide cover 21, allowing the gas inside the gas storage chamber to be discharged normally, and at the same time, the airflow inside the tower body 7 returns to the normal upward flow state, ensuring the stable discharge of clean gas and completing the single knocking and air pressure cleaning cycle.

Claims

1. A high-efficiency wire mesh demister for a refining tower, comprising a wire mesh demister assembly (1), characterized in that: The wire mesh demisting assembly (1) has a tower body (7) on its exterior. A top ring (2) is fixedly connected to the top of the wire mesh demisting assembly (1). A guide assembly (3) is slidably connected to the exterior of the wire mesh demisting assembly (1). Support cylinders (4) are fixedly connected to the top and bottom of the guide assembly (3). The two support cylinders (4) are fixed at the upper position inside the tower body (7). A drive assembly (5) is fixedly installed at the center of the bottom of the wire mesh demisting assembly (1). One end of the drive assembly (5) passes through the lower support cylinder (4) and the tower body (7) and is fixedly connected to a motor (6). The gas inlet (8) and the exhaust valve (10) are installed on the outside of the tower body (7). The exhaust valve (10) is located below the gas inlet (8), and the top of the tower body (7) is provided with an exhaust port (9). Three fixed boxes (11) are fixed at the edge of the inner wall of the upper support cylinder (4). A lifting assembly (12) slides through the fixed box (11). A top plate (13) is fixed at the top of the lifting assembly (12). The top plate (13) is L-shaped and fixed inside the fixed box (11). The bottom end of the lifting assembly (12) is connected to the top ring ( 2) Overlapping: A limiting component (14) is fixed on one side of the top plate (13). The limiting component (14) is fixedly connected to both sides of the inner wall of the fixed box (11). A striking component (15) is slidably connected inside the limiting component (14). The bottom end of the striking component (15) penetrates the bottom of the fixed box (11) and is located above the wire mesh defogging component (1). A sliding groove (16) is provided inside the striking component (15). A telescopic component (17) slides through the sliding groove (16). The telescopic component (17) overlaps with the opposite end of the lifting component (12). Three fixed components... Support rods (18) are fixed between the fixed boxes (11). A center seat (19) is fixed at one end of the three support rods (18). A sealing component (20) slides through the center seat (19). The bottom end of the sealing component (20) is fixed to the middle of the wire mesh defoaming component (1). A vent hood (21) overlaps the top of the sealing component (20). The vent hood (21) is fixed on the upper support cylinder (4) and is tapered. An air outlet (22) is opened in the tip of the top of the vent hood (21). The sealing component (20) and the air outlet (22) are positioned correspondingly.

2. The high-efficiency wire mesh demister for a refining tower according to claim 1, characterized in that: The wire mesh defoaming assembly (1) includes two sets of grid frames (1001) and a support ring (1004). A wire mesh layer (1002) is provided between the two sets of grid frames (1001). The grid frames (1001) and the wire mesh layer (1002) are embedded inside the support ring (1004). Two reinforcing ribs (1003) are snapped between the two grid frames (1001). The reinforcing ribs (1003) are used to install the wire mesh layer (1002) between the two grid frames (1001) by bolts. The wire mesh layer (1002) adopts a gradient pore structure with a sparse outer layer and a dense inner layer, a sparse bottom layer and a dense top layer. The bottom layer uses a large-pore coarse wire mesh to pre-separate large droplets and solid impurities. The middle layer uses a medium-pore wire mesh to capture medium droplets. The top layer uses a fine corrugated wire mesh to capture ultrafine droplets.

3. The high-efficiency wire mesh demister for a refining tower according to claim 2, characterized in that: The guide assembly (3) includes a guide cylinder (301), which is fixed between two upper and lower support cylinders (4). A guide groove (302) is provided inside the guide cylinder (301). The guide groove (302) is wave-shaped and is formed by several V-shaped grooves surrounding it. The support ring (1004) is sleeved inside the guide cylinder (301), and several sliding columns (1005) are fixed outside the support ring (1004). The sliding columns (1005) are slidably connected in the guide groove (302).

4. The high-efficiency wire mesh demister for a refining tower according to claim 2, characterized in that: The drive assembly (5) includes a protective shell (501), one side of which is fixed to the inner wall of the lower support cylinder (4). A worm gear (502) is rotatably connected inside the protective shell (501) via a bushing. A worm (503) is meshed with the outside of the worm gear (502). The end of the worm (503) is slidably connected inside the protective shell (501) via a bushing. One end of the worm (503) passes through the protective shell (501) and the lower support cylinder. (4) and tower body (7) and fixed to the output shaft of motor (6), a rectangular slide rod (504) is fixedly connected to the middle of the worm gear (502), a column (505) is sleeved on the outside of the rectangular slide rod (504), the top of the column (505) is fixedly connected to the bottom of the grid frame (1001), a rectangular sliding groove (506) is opened inside the column (505), and the rectangular slide rod (504) is slidably connected in the sliding groove (506).

5. The high-efficiency wire mesh demister for a refining tower according to claim 1, characterized in that: The lifting assembly (12) includes a lifting rod (121) that slides through the fixed box (11) and has a ball bearing (122) installed at the bottom end of the lifting rod (121). The ball bearing (122) overlaps the top ring (2). A telescopic rod (123) is fixed in the groove at the top of the lifting rod (121). The top end of the telescopic rod (123) is fixed in the top plate (13). A first spring (124) is sleeved on the outside of the telescopic rod (123). The first spring (124) is fixed on the groove and the fixed section of the telescopic rod (123). A top column (125) is installed on the side of the lifting rod (121).

6. A high-efficiency wire mesh demister for a refining tower according to claim 5, characterized in that: The limiting component (14) includes a limiting box (141), which is fixed to the inner wall of the fixing box (11) and the top plate (13). The striking component (15) slides through the limiting box (141). A blocking rod (142) is fixed at the openings at both ends of the limiting box (141). A guide block (143) is fixed on the side of the limiting box (141) near the lifting rod (121). The bottom of the guide block (143) is an inclined surface. The guide block (143) is located above the top column (125).

7. A high-efficiency wire mesh demister for a refining tower according to claim 6, characterized in that: The striking assembly (15) includes a slide (151), which is slidably connected to the limiting box (141). An extension rod (152) is fixed to the bottom of the slide (151). The bottom of the extension rod (152) passes through the limiting box (141) and is fixed with a striking plate (153). Several ventilation holes (154) are opened in the striking plate (153), and the striking plate (153) is located above the wire mesh defoaming assembly (1). The position of the slide (151) corresponds to that of the blocking rod (142). The sliding groove (16) is opened inside the slide (151). A second spring (155) is fixed to the top of the slide (151). The second spring (155) is fixed to the top of the inner wall of the top plate (13).

8. A high-efficiency wire mesh demister for a refining tower according to claim 7, characterized in that: The telescopic assembly (17) includes a slider (171) that slides through the groove (16). One end of the slider (171) that passes through the groove (16) is inclined and the bottom is horizontal. The slider (171) and the guide block (143) are designed to be offset, and the slider (171) is located below the guide block (143). The top post (125) overlaps the bottom horizontal surface of the slider (171). A guide post (172) is fixed on the side of the slider (171). The guide post (172) and the guide block (143) are on the same vertical line. The inclined surface at the bottom of the guide block (143) corresponds to the guide post (172). A third spring (173) is fixed on one side of the inner wall of the groove (16) of the slider (171). The third spring (173) is fixed on one side of the inner wall of the groove (16).

9. A high-efficiency wire mesh demister for a refining tower according to claim 1, characterized in that: The sealing assembly (20) includes a sealing block (201), which is composed of two symmetrically arranged conical blocks and located below the air outlet (22). A sliding rod (202) is fixed to the bottom of the sealing block (201). A sliding cylinder (203) is slidably sleeved on the outside of the sliding rod (202). The bottom end of the sliding cylinder (203) passes through the center seat (19) and is fixed to the middle of the wire mesh defoaming assembly (1). A fourth spring (204) is fixed between the bottom end of the sliding rod (202) and the inner wall of the sliding cylinder (203).

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