Low-temperature demisting and white smoke removal and purification device for waste incineration flue gas treatment

Abstract

This invention relates to the field of flue gas treatment technology, specifically to a low-temperature demisting and dewhitening synergistic purification device for waste incineration flue gas treatment. The device includes a housing assembly, inside which a low-temperature demisting cylinder, a synergistic dewhitening cylinder, and an emission cylinder are sequentially arranged, all three connected by a common ventilation pipe. A first spiral guide rod and a second spiral guide rod are rotatably installed in the ventilation pipe located on one side of the low-temperature demisting cylinder and at the interval between the low-temperature demisting cylinder and the synergistic dewhitening cylinder, respectively. The end of the first spiral guide rod extends outside the ventilation pipe and is fixedly mounted with a drive motor. The low-temperature demisting cylinder contains a first flow equalization plate, a filter disc, a condenser tube assembly, and a demisting component. This invention connects the low-temperature demisting cylinder, the synergistic dewhitening cylinder, and the emission cylinder in series to form a three-stage synergistic treatment process, achieving stratified purification and dewhitening of flue gas, significantly improving the purification efficiency and operational stability of waste incineration flue gas, while reducing energy consumption and maintenance costs.

Description

Technical Field

[0001] This invention relates to the field of flue gas treatment technology, specifically to a low-temperature demisting and whitening synergistic purification device for waste incineration flue gas treatment. Background Technology

[0002] Waste-to-energy incineration technology has been widely used due to its significant advantages in waste reduction and resource recovery. However, the flue gas produced during the incineration process is extremely complex, containing a large amount of water vapor, particulate matter, acidic gases (such as SO2 and HCl), heavy metals and volatile organic compounds, making it difficult to treat. In actual operation, after the flue gas is cooled in the early stage, it is often in the low temperature range of 40-80℃. At this time, water vapor is easy to combine with residual dust and acidic gases to form pollutant-containing fog droplets. These fog droplets cause visual pollution of white smoke emission on the one hand, and cause secondary entrainment of pollutants on the other hand, forcing some of the treated pollutants to be re-emitted with the fog droplets, which not only aggravates air pollution, but also makes it more difficult to meet emission standards. Conventional flue gas treatment equipment has significant shortcomings in its collaborative purification design, making it difficult to adapt to the complex operating conditions mentioned above. Most equipment uses a single demisting or whitening module, lacking a systematic collaborative design. It generally suffers from problems such as complex structure, high energy consumption due to multiple power sources, easy clogging of core components by dust, and high maintenance costs. Although some equipment attempts to integrate demisting and whitening functions, the purification efficiency is low, and it cannot effectively solve the core pain points of low-temperature droplet formation and secondary entrainment of pollutants, making it difficult to balance purification effect and operational stability.

[0003] To address the aforementioned technical shortcomings, and with the aim of achieving synergistic purification through low-temperature demisting and whitening, improving processing efficiency and operational stability, an integrated synergistic treatment improvement scheme is proposed. This scheme is adapted to the complex composition of waste incineration flue gas and the requirements of low-temperature operating conditions, avoiding air pollution and emission compliance problems caused by incomplete purification.

[0004] To address this technical deficiency, a solution is proposed. Summary of the Invention

[0005] The purpose of this invention is to form a three-stage synergistic treatment process by connecting a low-temperature demister, a co-processing whitening cylinder, and an emission cylinder in series, thereby achieving stratified purification and whitening of flue gas, significantly improving the purification efficiency and operational stability of waste incineration flue gas, while reducing energy consumption and maintenance costs.

[0006] The objective of this invention can be achieved through the following technical solution: a low-temperature demisting and whitening synergistic purification device for waste incineration flue gas treatment, comprising a housing assembly, wherein a low-temperature demisting cylinder, a synergistic whitening cylinder, and an emission cylinder are sequentially arranged inside the housing assembly, and the three are jointly arranged and connected to a ventilation pipe; Among them, a first spiral air guide rod and a second spiral air guide rod are rotatably installed in the vent pipe located on one side of the low temperature demister and in the vent pipe installed at the interval between the low temperature demister and the co-processing whitening cylinder, respectively. The end of the first spiral air guide rod extends outside the vent pipe and is fixedly installed with a drive motor.

[0007] Furthermore, the low-temperature demister is internally equipped with a first flow equalization plate, a filter disc, a condenser tube assembly, and a demisting component. The first flow equalization plate is fixedly sleeved on the end of the first spiral air guide rod away from the drive motor, and the filter disc is movably sleeved on the adjacent part of the first flow equalization plate. The two sets of condenser tube assemblies are symmetrically distributed at the upper and lower ends inside the low-temperature demister, and a circulation pump is provided at the center of the opening end of each set of condenser tube assemblies.

[0008] Furthermore, a sleeve is fixedly installed at the center of the filter disc, and the sleeve is movably sleeved on the outside of the first spiral air guide rod. The corrugated groove provided on the inner wall of the sleeve is in sliding fit with the round shaft provided on the outside of the first spiral air guide rod. A reset spring ring is provided on the outside of the first spiral air guide rod between the sleeve and the first flow equalization plate, and the end of the reset spring ring is fixedly connected to the sleeve.

[0009] Furthermore, the mist scraping assembly includes a bidirectional threaded screw fixedly installed at the interval between the first spiral air guide rod and the second spiral air guide rod, and a sliding frame is spirally sleeved at the end of the bidirectional threaded screw. The upper and lower ends of the sliding frame are respectively sleeved on the outside of the upper and lower sets of condenser tubes.

[0010] Furthermore, the co-processing whitening cylinder is internally equipped with a concave feeding frame, a linkage flipping frame, and multiple sets of adsorption wheels. The concave feeding frame is fixedly connected to the end of the second spiral air guide rod. The upper and lower end faces of the concave feeding frame are provided with conical scraping strips, and the tips of the conical scraping strips are in contact with the co-processing whitening cylinder. Two sets of magnetic strips are embedded in the upper and lower inner walls of the concave feeding frame. The linkage flipping frame moves within the inner ring of the concave feeding frame. Magnetic strips that repel the magnetic blocks at the concave feeding frame are embedded in the upper and lower ends of the linkage flipping frame. The multiple sets of adsorption wheels are evenly distributed on the inner wall of the linkage flipping frame, and their centers are rotatably connected to the inner wall of the linkage flipping frame through a rotating shaft. The surface of the adsorption wheels is covered with a high-efficiency adsorption material for adsorbing and treating small particles and harmful substances in the flue gas.

[0011] Furthermore, a clamping cylinder with a diameter larger than the inner diameter of the air pipe is fixedly installed at the side wall opening of the collaborative whitening cylinder away from the end of the second spiral air guide rod, and a limiting toothed cylinder is rotatably provided inside the clamping cylinder, half of which extends to the outside of the clamping cylinder and is fixedly connected to the linkage flipping frame.

[0012] Furthermore, an exhaust pipe is provided at the end of the discharge cylinder away from the vent pipe, and two sets of positioning rods are provided inside the discharge cylinder. The two sets of positioning rods are respectively fixedly installed inside the discharge cylinder at the upper and lower ends of the vent pipe, and the two ends of the positioning rods are respectively hinged to abutment plates. The opposing surfaces of the two sets of abutment plates are provided with paddles.

[0013] Furthermore, the discharge cylinder is also equipped with movable rotating rods. Two sets of movable rotating rods are respectively rotatably set at the upper and lower ends inside the linkage flipping frame. One end of each set of movable rotating rods extends into the co-processing whitening cylinder and is fixedly installed with auxiliary rotating gears. The two sets of auxiliary rotating gears respectively mesh with the limiting gear cylinder. Eccentric rotating wheels are fixedly sleeved on the outside of the movable rotating rods at the corresponding positions on the upper and lower parts of the abutment plate.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention, through the setting of a low-temperature demister and its internal structure, adopts a three-stage treatment structure of a filter disc, a first flow equalization plate, and a condenser tube assembly. The filter disc specifically intercepts large dust particles with a diameter ≥10μm, the first flow equalization plate achieves airflow uniformity, and avoids local flow velocity imbalance affecting demister efficiency. The symmetrically distributed condenser tube assembly is maintained at a low temperature of 10℃ under the drive of a circulating pump, providing a stable low-temperature environment for water vapor condensation. The three form a progressive demister logic of "interception-flow equalization-condensation". At the same time, on the basis of achieving self-cleaning of the filter disc, it also forces the demister component to work in conjunction with the first spiral air guide rod, and the sliding frame moves back and forth along the condenser tube assembly to accurately scrape off small water droplets condensed on the tube wall, preventing water droplets from being carried away by the airflow again, improving the thoroughness of demistering, and making up for the shortcomings of water droplet residue in traditional condensation demisters.

[0015] 2. The present invention sets up a collaborative whitening cylinder and its internal structure, which adopts a magnetic drive design of "concave feeding frame and linkage flipping frame". The concave feeding frame is fixed to the second spiral air guide rod, and the embedded magnetic strips in the concave feeding frame and the magnetic strips in the linkage flipping frame generate repulsion force, so that the linkage flipping frame rotates synchronously with the concave feeding frame. The airflow contact angle can be changed without additional power, thereby improving the adsorption efficiency. In addition, the conical scraping strips on the upper and lower ends of the concave feeding frame can simultaneously scrape the inner wall of the whitening cylinder to prevent dust accumulation and contamination of the cylinder wall and adsorption components; multiple sets of adsorption wheels are evenly distributed on the inner wall, and the surface high-efficiency adsorption material specifically removes tiny particles and harmful substances; the flipping action of the flipping frame ensures that all parts of the adsorption wheel can fully contact the flue gas, avoid local adsorption saturation, and improve the whitening and purification effect.

[0016] 3. This invention, by setting up an exhaust cylinder and its internal structure, and by connecting the limiting toothed cylinder with the linkage flipping frame and the auxiliary rotating gear, transmits the flipping power of the linkage flipping frame to the exhaust cylinder component; it adopts a disturbance cooling structure of "eccentric rotating wheel, abutment plate and a paddle", the movable rotating rod drives the eccentric rotating wheel to rotate, and the abutment plate is squeezed to release the reciprocating swing, while the paddle disturbs the airflow synchronously, so that the flue gas is evenly distributed in the exhaust cylinder, enhances the heat exchange with the cylinder wall, reduces the temperature of the exhaust flue gas, avoids the secondary environmental impact caused by high temperature flue gas emissions, and further improves the stability of flue gas purification.

[0017] In summary, a three-stage process of "flue gas pretreatment and low-temperature demisting → synergistic whitening → cooling exhaust" is constructed. Each stage is closely connected, with the previous stage providing optimization conditions for the next stage. Furthermore, the entire process is driven by a single power source to ensure the continuity and stability of the purification effect. Attached Figure Description

[0018] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional view of the upper housing assembly and internal structure of the present invention; Figure 3 This is a half-sectional view of the low-temperature demister of the present invention; Figure 4 This is a half-sectional view of the combination of the first flow equalization plate and the filter circular plate of the present invention. Figure 5 This is a side sectional view of the filter disc of the present invention; Figure 6 This is a half-sectional view of the synergistic whitening cylinder of the present invention; Figure 7 This is a half-sectional view of the discharge cylinder of the present invention.

[0020] In the diagram: 1. Housing assembly; 2. Low-temperature demister; 21. First flow equalization plate; 22. Filter disc; 23. Condenser tube assembly; 24. Scraper assembly; 241. Bidirectional threaded screw; 242. Sliding frame; 25. Sleeve; 26. Return spring ring; 3. Cooperative whitening cylinder; 31. Concave feeding frame; 32. Linkage flipping frame; 33. Adsorption wheel; 34. Conical scraper strip; 35. Magnetic strip; 36. Clamping sleeve; 37. Limiting gear cylinder; 4. Discharge cylinder; 41. Positioning rod; 42. Support plate; 43. Paddle; 44. Movable rotating rod; 45. Auxiliary rotating gear; 46. Eccentric rotating wheel; 5. Vent pipe; 6. First spiral air guide rod; 7. Second spiral air guide rod; 8. Drive motor. Detailed Implementation

[0021] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. 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.

[0022] Example 1: Please refer to Figure 1 - Figure 5 As shown, the low-temperature demisting and whitening synergistic purification device for waste incineration flue gas treatment includes a housing assembly 1. Inside the housing assembly 1, a low-temperature demisting cylinder 2, a synergistic whitening cylinder 3, and an exhaust cylinder 4 are arranged in sequence, and the three are connected to a common ventilation pipe 5. A first spiral air guide rod 6 and a second spiral air guide rod 7 are rotatably arranged in the ventilation pipe 5 located on one side of the low-temperature demisting cylinder 2 and installed at the interval between the low-temperature demisting cylinder 2 and the synergistic whitening cylinder 3, respectively. The end of the first spiral air guide rod 6 extends outside the ventilation pipe 5 and is fixedly installed with a drive motor 8. An air inlet pipe is provided at the top of the ventilation pipe 5. The low-temperature demister 2 is internally equipped with a first flow equalization plate 21, a filter disc 22, a condenser tube assembly 23, and a demisting component 24. The first flow equalization plate 21 is fixedly sleeved on the end of the first spiral air guide rod 6 away from the drive motor 8, and the filter disc 22 is movably sleeved on the adjacent part of the first flow equalization plate 21. Two sets of condenser tube assemblies 23 are symmetrically distributed at the upper and lower ends inside the low-temperature demister 2. A circulation pump is provided at the center of the opening end of each set of condenser tube assemblies 23. A sleeve 25 is fixedly installed at the center of the filter disc 22, and the sleeve 25 is movably sleeved on the outside of the rod body of the first spiral air guide rod 6. The corrugated groove provided on the inner wall of the sleeve 25 is in sliding fit with the round shaft provided on the outside of the rod body of the first spiral air guide rod 6. A return spring ring 26 is provided on the outside of the rod body of the first spiral air guide rod 6 between the sleeve 25 and the first flow equalization plate 21, and the end of the return spring ring 26 is fixedly connected to the sleeve 25. The mist scraper assembly 24 includes a bidirectional threaded screw 241 fixedly installed at the interval between the first spiral air guide rod 6 and the second spiral air guide rod 7, and a sliding frame 242 is spirally sleeved at the end of the bidirectional threaded screw 241. The upper and lower ends of the sliding frame 242 are respectively sleeved on the outside of the upper and lower sets of condenser tubes 23. The synergistic purification process includes: flue gas pretreatment and low-temperature demisting stage → synergistic whitening stage → cooling exhaust stage; S1: Flue gas pretreatment and low-temperature demisting stage: The waste incineration flue gas is introduced into the ventilation frame of the first section through the inlet pipe, and the drive motor 8 is turned on, driving the first spiral guide rod 6 to rotate, thereby introducing the gas into the low-temperature demisting cylinder 2. First, the filter disc 22 intercepts large dust particles with a diameter ≥10μm. Then, the gas passes through the first flow equalization plate 21 to make the airflow evenly distributed, avoiding local airflow speeds that are too fast or too slow and affect the demisting effect. Next, the gas comes into full contact with the condenser tube group 23, which is symmetrically distributed at the upper and lower ends. Under the action of the circulation pump, the condensate inside the condenser tube group 23 circulates and maintains a constant flow rate of 1 kJ / kg. At 0℃, the gas comes into contact with the condenser tube assembly 23, forming condensate droplets that adhere to the tube wall. At this time, the mist scraper assembly 24 plays its role. The drive motor 8 drives the first spiral guide rod 6 to rotate, and the bidirectional threaded screw 241 also rotates. The sliding frame 242 moves back and forth along the bidirectional threaded screw 241. The upper and lower ends of the sliding frame 242 are respectively sleeved on the outside of the upper and lower condenser tube assemblies 23. During the movement, the small water droplets condensed on the surface of the condenser tube assembly 23 are scraped off to prevent the small water droplets from being carried away by the airflow again. After the gas is treated by the low temperature demister 2, most of the large particulate dust and water vapor have been removed. In addition, during the rotation of the first spiral air guide rod 6, it moves relative to the sleeve 25, and the circular shaft slides along the corrugated groove, thereby driving the sleeve 25 to perform reciprocating linear motion. During the movement of the sleeve 25, the reset spring ring 26 undergoes elastic deformation, providing power for the reset of the sleeve 25. At the same time, the sleeve 25 drives the filter disc 22 to perform reciprocating linear motion, forcing the filter disc 22 to continuously shake off the dust adhering to its surface during the interception of large dust particles, preventing dust from clogging the filter disc 22 and affecting the filtration effect. It is worth noting that limit blocks are set at both ends of the bidirectional threaded screw 241, and pressure sensors are installed inside the limit blocks. An electromagnetic clutch is added between the first spiral air guide rod 6 and the bidirectional threaded screw 241. The electromagnetic clutch is electrically connected to the pressure sensor to realize the on and off control of power transmission. Therefore, when the slide frame 242 contacts the pressure sensor of one end limit block 243, the sensor sends a signal to the electromagnetic clutch to disconnect the power transmission. At the same time, the sleeve 25 moves in the opposite direction under the elastic restoring force of the return spring ring 26, and drives the bidirectional threaded screw 241 to rotate in the opposite direction through the linkage rod. The slide frame 242 resets in the opposite direction along the bidirectional threaded screw 241 until it contacts the other end limit block, completing one reciprocating cycle. This design uses the reciprocating motion of the sleeve 25 to provide power for the reverse rotation of the screw, without the need for an additional motor, maintaining the creativity of single power source drive, ensuring that the slide frame 242 automatically realizes linear reciprocating movement, and avoiding the situation of unidirectional motion stagnation. Example 2: Please refer to Figure 2 and Figure 6As shown, the co-processing whitening cylinder 3 is internally equipped with a concave feeding frame 31, a linkage flipping frame 32, and multiple sets of adsorption wheels 33. The concave feeding frame 31 is fixedly connected to the end of the second spiral air guide rod 7. Conical scraping strips 34 are provided on both the upper and lower end faces of the concave feeding frame 31, and the tips of the conical scraping strips 34 contact the co-processing whitening cylinder 3. Two sets of magnetic strips 35 are embedded in the upper and lower inner walls of the concave feeding frame 31. The linkage flipping frame 32 moves within the inner ring of the concave feeding frame 31. Magnetic strips 35 that repel the magnetic blocks at the concave feeding frame 31 are embedded in the upper and lower ends of the linkage flipping frame 32. The linkage flipping frame 32 moves within the concave feeding frame 31. Under the magnetic force of 1, it can perform a flipping action. Multiple sets of adsorption wheels 33 are evenly distributed on the inner wall of the linkage flipping frame 32, and their centers are rotatably connected to the inner wall of the linkage flipping frame 32 through a rotating shaft. The surface of the adsorption wheels 33 is covered with high-efficiency adsorption material for adsorbing and treating small particles and harmful substances in the flue gas. A clamping cylinder 36 with a diameter larger than the inner diameter of the air pipe 5 is fixedly installed at the side wall opening of the coordinating whitening cylinder 3 away from the second spiral air guide rod 7. A limiting toothed cylinder 37 is rotatably set inside the clamping cylinder 36. Half of the limiting toothed cylinder 37 extends to the outside of the clamping cylinder 36 and is fixedly connected to the linkage flipping frame 32.

[0023] S2: Collaborative whitening stage: The gas treated by the low-temperature demister 2 is introduced into the collaborative whitening cylinder 3 through the vent pipe 5. At this time, the second spiral air guide rod 7 rotates under the drive of the drive motor 8 (the drive motor 8 and the first spiral air guide rod 6 are driven by the same power source), which in turn drives the concave material feeding frame 31 fixedly connected to its end to rotate. The conical scraping strips 34 on the upper and lower end faces of the concave material feeding frame 31 scrape the inner wall of the collaborative whitening cylinder 3 to prevent dust and other substances from accumulating on the cylinder wall. At the same time, the magnetic strip 35 embedded in the concave material feeding frame 31 and the magnetic strip 35 embedded in the linkage flipping frame 32 generate a repulsive magnetic force, so that the linkage flipping frame 32 continuously flips during the rotation of the concave material feeding frame 31.

[0024] During the flow of gas inside the co-processing whitening cylinder 3, it comes into full contact with multiple sets of adsorption rotors 33 evenly distributed on the inner wall. The high-efficiency adsorption material covering the surface of the adsorption rotors 33 adsorbs and treats the tiny particles and harmful substances in the flue gas, further purifying the flue gas. Moreover, the flipping action of the linkage flipping frame 32 can continuously change its relative position with the adsorption rotors 33, so that different parts of the adsorption rotors 33 can come into full contact with the gas, improving the adsorption effect. After being treated by the co-processing whitening cylinder 3, most of the tiny particles and harmful substances in the gas have been removed, achieving the whitening effect, and finally it is discharged into the atmosphere through the discharge cylinder 4.

[0025] Example 3: Please refer to Figure 2 and Figure 7As shown, an exhaust pipe is provided at the end of the discharge cylinder 4 away from the vent pipe 5, and two sets of positioning rods 41 are provided inside the discharge cylinder 4. The two sets of positioning rods 41 are fixedly installed inside the discharge cylinder 4 at the upper and lower ends of the vent pipe 5, and the two ends of the positioning rods 41 are respectively hinged to the abutment plates 42. The two sets of abutment plates 42 are provided with paddles 43 on opposite sides. The discharge cylinder 4 is also provided with movable rotating rods 44. The two sets of movable rotating rods 44 are respectively rotatably set at the upper and lower ends inside the linkage flip frame 32. One end of the two sets of movable rotating rods 44 extends into the cooperating whitening cylinder 3 and is fixedly installed with auxiliary rotating gears 45. The two sets of auxiliary rotating gears 45 mesh with the limiting gear cylinder 37 respectively. Eccentric rotating wheels 46 are fixedly sleeved on the outside of the movable rotating rods 44 at the upper and lower corresponding positions of the abutment plates 42.

[0026] S3: Cooling and Exhausting Stage: After being treated by the co-processing whitening cylinder 3, the gas enters the exhaust cylinder 4. At this time, the linkage flipping frame 32 continuously flips inside the co-processing whitening cylinder 3, driving the auxiliary rotating gear 45 to rotate synchronously. The auxiliary rotating gear 45 meshes with the limiting gear cylinder 37, thereby driving the movable rotating rod 44 and its external eccentric rotating wheel 46 to rotate as well. When the eccentric rotating wheel 46 rotates, it continuously squeezes and releases the abutment plate 42, forcing the abutment plate 42 to swing back and forth around the hinge point on the positioning rod 41. The paddle 43 on the abutment plate 42 also swings accordingly, further disturbing the gas entering the exhaust cylinder 4, making the gas distribution in the exhaust cylinder 4 more uniform, and promoting the heat exchange between the gas and the inner wall of the exhaust cylinder 4, thus playing a certain cooling role. Finally, the treated gas with a suitable temperature is discharged into the atmosphere through the exhaust pipe at the end of the exhaust cylinder 4 away from the ventilation pipe 5, effectively reducing the pollution of the environment by the waste incineration flue gas and achieving the synergistic purification effect of low-temperature demisting and whitening. In summary, through the above-mentioned structural design and collaborative operation, this invention achieves highly efficient synergistic purification of low-temperature demisting and whitening in waste incineration flue gas treatment. In the low-temperature demisting stage, the cooperation of the filter disc 22, the first flow equalization plate 21, the condenser tube group 23, and the demisting component 24 effectively removes large particulate dust and water vapor from the flue gas. The reciprocating linear motion of the filter disc 22 avoids dust blockage and ensures continuous and efficient demisting. In the synergistic whitening stage, the concave feeding frame 31, the linkage flipping frame 32, and the adsorption wheel 33 work together. The concave feeding frame 31 prevents dust from accumulating on the cylinder wall, and the linkage flipping frame 32 changes its relative position to the adsorption wheel 33, so that different parts of the adsorption wheel 33 can fully adsorb small particles and harmful substances in the flue gas, achieving a good whitening effect. In the cooling and exhaust stage, the flipping of the linkage flipping frame 32 drives a series of components to move, disturbing the gas entering the exhaust cylinder 4, promoting heat exchange, and making the exhaust gas temperature suitable. The entire device, starting from the entry of flue gas, undergoes multiple stages of gradual treatment before finally releasing the treated gas at a suitable temperature into the atmosphere, greatly reducing the environmental pollution caused by waste incineration flue gas.

[0027] Working principle: Low-temperature demisting stage: After the flue gas is introduced through the inlet pipe, the drive motor 8 drives the first spiral air guide rod 6 to rotate, sending the flue gas into the low-temperature demisting cylinder 2; the filter disc 22 first intercepts large dust particles with a particle size ≥10μm, and then the flue gas passes through the first flow equalization plate 21 to achieve airflow uniformity, and fully contacts the condenser tube assembly 23 which is maintained at a low temperature of 10℃, and water vapor condenses into small water droplets and adheres to the tube wall. At the same time, the bidirectional threaded screw 241 rotates with the first spiral air guide rod 6, driving the sliding frame 242 to reciprocate along the condenser tube assembly 23 to scrape off the water droplets; and the first spiral air guide rod 6, through the cooperation of the round shaft and the corrugated groove of the sleeve 25, drives the sleeve 25 and the filter disc 22 to reciprocate linearly, shaking off the surface dust, and the reset spring ring 26 provides power for the reset of the sleeve 25 to avoid clogging of the filter disc 22.

[0028] Collaborative whitening stage: After demisting, the flue gas enters the collaborative whitening cylinder 3 through the ventilation pipe 5. The second spiral air guide rod 7 drives the concave material feeding frame 31 to rotate. Its conical scraper strip 34 scrapes the inner wall of the collaborative whitening cylinder 3 to prevent dust accumulation. At the same time, the concave material feeding frame 31 and the embedded magnetic strip 35 of the linkage flipping frame 32 generate repulsive force, driving the linkage flipping frame 32 to continuously flip. The flue gas comes into full contact with the adsorption wheel 33. The high-efficiency adsorption material on the surface of the wheel adsorbs small particles and harmful substances. The movement of the flipping frame makes all parts of the wheel evenly contact the flue gas, improving the adsorption and whitening effect. The limiting toothed cylinder 37 in the clamping cylinder 36 is fixedly connected to the linkage flipping frame 32 to ensure the stability of the flipping action.

[0029] Cooling and exhaust stage: The smoke after whitening enters the exhaust cylinder 4. The linkage flip frame 32 drives the auxiliary rotating gear 45 to rotate. Through the meshing with the limiting gear cylinder 37, the movable rotating rod 44 and the eccentric rotating wheel 46 rotate. The eccentric rotating wheel 46 squeezes and releases the abutment plate 42. The abutment plate 42 drives the paddle 43 to swing back and forth with the positioning rod 41 as the hinge point, disturbing the smoke to make it evenly distributed, enhancing the heat exchange with the inner wall of the exhaust cylinder 4 to achieve cooling. Finally, the smoke that meets the standard and has a suitable temperature is discharged through the exhaust pipe.

[0030] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A low-temperature demisting and whitening synergistic purification device for waste incineration flue gas treatment, characterized in that: The housing assembly (1) includes a low-temperature demister (2), a co-processing whitening cylinder (3) and an exhaust cylinder (4) arranged sequentially inside the housing assembly (1), and the three are connected to a common ventilation pipe (5). Among them, a first spiral air guide rod (6) and a second spiral air guide rod (7) are rotatably installed in the ventilation pipe (5) located on one side of the low temperature demister (2) and installed at the interval between the low temperature demister (2) and the cooperating whitening cylinder (3). The end of the first spiral air guide rod (6) extends outside the ventilation pipe (5) and is fixedly installed with a drive motor (8). An air inlet pipe is provided at the top of the ventilation pipe (5). The low-temperature demister (2) is provided with a first flow equalization plate (21), a filter disc (22), a condenser tube assembly (23) and a demisting component (24). The first flow equalization plate (21) is fixedly sleeved on the end of the first spiral air guide rod (6) away from the drive motor (8), and the filter disc (22) is movably sleeved on the adjacent part of the first flow equalization plate (21). The two sets of condenser tube assemblies (23) are symmetrically distributed at the upper and lower ends inside the low-temperature demister (2). A circulation pump is provided at the center of the opening end of each set of condenser tube assemblies (23). The co-processing whitening cylinder (3) is internally equipped with a concave feeding frame (31), a linkage flipping frame (32), and multiple sets of adsorption wheels (33). The concave feeding frame (31) is fixedly connected to the end of the second spiral air guide rod (7). The upper and lower end faces of the concave feeding frame (31) are equipped with conical scraping strips (34), and the tips of the conical scraping strips (34) are in contact with the co-processing whitening cylinder (3). The upper and lower inner walls of the concave feeding frame (31) are embedded with two sets of magnetic strips (35), and the linkage flipping frame (32) moves within the concave feeding frame (31). At the inner ring, the upper and lower ends of the linkage flipping frame (32) are embedded with magnetic strips (35) that repel the magnetic blocks at the concave feeding frame (31). The linkage flipping frame (32) can flip under the magnetic force of the concave feeding frame (31). The multiple sets of adsorption wheels (33) are evenly distributed on the inner wall of the linkage flipping frame (32), and their centers are rotatably connected to the inner wall of the linkage flipping frame (32) through a rotating shaft. The surface of the adsorption wheels (33) is covered with a high-efficiency adsorption material for adsorbing and treating small particles and harmful substances in the flue gas. The discharge cylinder (4) is provided with an exhaust pipe at the end away from the vent pipe (5), and two sets of positioning rods (41) are provided inside the discharge cylinder (4). The two sets of positioning rods (41) are respectively fixedly installed inside the discharge cylinder (4) at the upper and lower ends of the vent pipe (5), and the two ends of the positioning rods (41) are respectively hinged with abutment plates (42). The two sets of abutment plates (42) corresponding to the front and rear are provided with paddles (43) on their opposite sides.

2. The low-temperature demisting and whitening synergistic purification device for waste incineration flue gas treatment according to claim 1, characterized in that, A sleeve (25) is fixedly installed at the center of the filter disc (22), and the sleeve (25) is movably sleeved on the outside of the first spiral air guide rod (6). The corrugated groove provided on the inner wall of the sleeve (25) is in sliding fit with the round shaft provided on the outside of the first spiral air guide rod (6). A reset spring ring (26) is provided on the outside of the first spiral air guide rod (6) between the sleeve (25) and the first flow equalization plate (21), and the end of the reset spring ring (26) is fixedly connected to the sleeve (25).

3. The low-temperature demisting and whitening synergistic purification device for waste incineration flue gas treatment according to claim 1, characterized in that, The mist scraper assembly (24) includes a bidirectional threaded screw (241) fixedly installed at the interval between the first spiral air guide rod (6) and the second spiral air guide rod (7), and a sliding frame (242) is spirally sleeved at the end of the bidirectional threaded screw (241). The upper and lower ends of the sliding frame (242) are respectively sleeved on the outside of the upper and lower sets of condenser tubes (23).

4. The low-temperature demisting and whitening synergistic purification device for waste incineration flue gas treatment according to claim 1, characterized in that, A clamp (36) with a diameter larger than the inner diameter of the air pipe (5) is fixedly installed at the side wall opening of the collaborative whitening cylinder (3) away from the second spiral air guide rod (7). A limiting toothed cylinder (37) is rotatably provided inside the clamp (36). Half of the limiting toothed cylinder (37) extends to the outside of the clamp (36) and is fixedly connected to the linkage flipping frame (32).

5. The low-temperature demisting and whitening synergistic purification device for waste incineration flue gas treatment according to claim 1, characterized in that, The discharge cylinder (4) is also provided with a movable rotating rod (44). The two sets of movable rotating rods (44) are respectively rotatably set at the upper and lower ends inside the linkage flipping frame (32). One end of each set of movable rotating rods (44) extends into the co-operating whitening cylinder (3) and is fixedly installed with an auxiliary rotating gear (45). The two sets of auxiliary rotating gears (45) respectively mesh with the limiting gear cylinder (37). An eccentric rotating wheel (46) is fixedly sleeved on the outside of the movable rotating rod (44) at the corresponding position on the upper and lower parts of the abutment plate (42).

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