Wet dust collector with rotary vane and baffle plate
By designing a wet scrubber with cyclone vanes and baffles, and utilizing a combination of cyclone separators and multi-layer spray devices, the problem of poor dust removal efficiency in existing wet scrubbers has been solved, achieving efficient removal of particulate matter and gaseous pollutants and ensuring that emissions meet standards.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG SHENGBAO FRP CO LTD
- Filing Date
- 2025-05-14
- Publication Date
- 2026-05-15
AI Technical Summary
Existing wet scrubbers are ineffective at removing dust and cannot meet emission standards.
Design a wet dust collector with cyclone vanes and baffles, including a cyclone separator, a demister and a multi-layer spray device. The cyclone separator generates a centrifugal force field and the spray device performs multiple washes to separate the gas from the pollutants.
It achieves three-stage dust removal of industrial waste gas, effectively removing particulate matter and gaseous pollutants, and ensuring that the discharged gas meets emission standards.
Smart Images
Figure CN224236437U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of environmental protection equipment technology, and in particular to a wet dust collector with swirl vanes and baffles for removing particulate matter and gaseous pollutants from industrial waste gas. Background Technology
[0002] The emergence of dust collection towers is closely related to the increasingly serious air pollution problem after the Industrial Revolution. From the late 19th to the early 20th century, with the rapid development of heavy industries such as coal, metallurgy, and chemicals, the emissions of pollutants such as smoke and sulfides from factories increased dramatically, causing environmental problems such as smog and acid rain, and even leading to public health events (such as the London smog). Early dust collection technologies (such as gravity settling chambers and inertial dust collectors) were inefficient and unable to meet the demands. In the mid-20th century, the gradual improvement of environmental regulations (such as the US Clean Air Act) spurred technological progress, leading to the development of technologies such as wet scrubbing and electrostatic precipitators. Wet scrubbing equipment was widely used, but current wet scrubbing equipment is essentially a simple spray tower structure. Although simple in structure, this type of wet scrubbing equipment has poor dust removal efficiency, and the released gas does not meet emission standards. Utility Model Content
[0003] To address the above deficiencies, the purpose of this utility model is to provide a wet dust collector with swirl vanes and baffles. This wet dust collector with swirl vanes and baffles has good dust removal effect, and the discharged gas can meet emission standards.
[0004] To achieve the above objectives, the technical solution of this utility model is as follows:
[0005] A wet dust collector with swirl vanes and baffles includes a cylindrical body. An air inlet is provided at the lower part of the cylindrical body. A cyclone separator is provided inside the cylindrical body above the air inlet. A demister is provided above the cyclone separator. Spraying devices are provided between the cyclone separator and the demister, and above the demister. The two spraying devices are respectively connected to a circulating washing liquid inlet and a rinsing water inlet. An air outlet is provided at the top of the cylindrical body.
[0006] The bottom of the cylinder is sealed with a base plate, a base plate bracket is installed on the base plate inside the cylinder, a base plate is installed on the base plate bracket, and the base plate is inclined.
[0007] The hydrocyclone is provided in two units, which are stacked one on top of the other.
[0008] The hydrocyclone includes an annular plate connected to the inner wall of the cylinder, a cover cylinder connected to the inner side of the annular plate, a circular blind plate at the center of the cover cylinder, and multiple blades spirally connected between the blind plate and the cover cylinder.
[0009] The ring plate is provided with multiple flow guide ports, and an overflow pipe is connected to the lower side of the ring plate corresponding to the position of the flow guide ports. The lower end of the overflow pipe is connected to a flow guide pipe that extends obliquely towards the center of the cylinder.
[0010] The spraying device includes a main spray pipe, with annular first spraying branch pipes connected to both ends of the main spray pipe, and a straight second spraying branch pipe connected to the end of the main spray pipe. The second spraying branch pipe passes through the center of the first spraying branch pipe and its end is connected to the first spraying branch pipe. Multiple spray heads are evenly spaced on the lower side of the first spraying branch pipe, and a spray head is located at the center of the second spraying branch pipe.
[0011] The demister includes multiple vertically arranged baffles.
[0012] The cylinder has a drain port that connects to the inside of the cylinder at the lower end of the bottom plate, and an overflow port on the cylinder above the drain port; a low level gauge interface and a high level gauge interface are provided on the cylinder between the upper end of the bottom plate and the air inlet.
[0013] The cylinder located above the overflow port is provided with multiple inspection ports.
[0014] The outer periphery of the cylinder is provided with multiple reinforcing rings.
[0015] After adopting the above technical solution, the beneficial effects of this utility model are:
[0016] This utility model of a wet dust collector with swirl vanes and baffles includes a cylindrical body. An air inlet is located at the bottom of the cylindrical body. Inside the cylindrical body, above the air inlet, is a cyclone separator. Above the cyclone separator is a demister. Spray devices are located between the cyclone separator and the demister, and above the demister. The two spray devices are connected to a circulating washing liquid inlet and a rinsing water inlet, respectively. An air outlet is located at the top of the cylindrical body. In this utility model, industrial waste gas enters through the air inlet and first passes through the cyclone separator from bottom to top. The cyclone separator guides the waste gas into a rotating state, forming a strong centrifugal force field. This rotational motion causes solid particles and liquid droplets in the airflow to be rapidly thrown towards the outer wall, thereby achieving separation of gas and pollutants. After the first dust removal, the gas continues upward through the spray device located below for a second dust removal, and then through the demister and the spray device above for a third dust removal. Finally, the gas enters the chimney from the air outlet and is discharged into the atmosphere. This invention allows industrial waste gas to pass through a cyclone separator, a demister, and a spray device for three stages of dust removal after entering the dust collector. This effectively removes particulate matter and gaseous pollutants contained in the industrial waste gas, ensuring that the discharged gas meets emission standards and does not cause environmental pollution.
[0017] In summary, the wet dust collector with swirl vanes and baffles of this invention solves the technical problems of poor dust removal effect in existing dust collectors. The wet dust collector with swirl vanes and baffles of this invention has a good dust removal effect, and the discharged gas can meet the emission standards. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of the wet dust collector with swirl vanes and baffles of this utility model;
[0019] Figure 2 yes Figure 1 Top view;
[0020] Figure 3 yes Figure 1 Schematic diagram of the structure of the central spray device;
[0021] Figure 4 yes Figure 1 Schematic diagram of the structure of a hydrocyclone;
[0022] In the diagram: 10. Cylinder body, 12. Reinforcing ring, 14. Lifting lug, 16. Base plate, 17. Base plate bracket, 18. Base plate, 20. Drain port, 21. Flushing water inlet, 22. Overflow port, 23. Circulating washing liquid inlet, 24. Inspection port, 26. Low level gauge interface, 27. High level gauge interface, 28. Air inlet, 29. Air outlet, 30. Cyclone separator, 31. Blind flange, 32. Overflow pipe, 33. Guide port, 34. Ring plate, 36. Cover cylinder, 38. Blade, 39. Guide pipe, 40. First spray device, 42. Spray main pipe, 44. First spray branch pipe, 46. Second spray branch pipe, 48. Spray head, 49. Mounting bracket, 50. Second spray device, 60. Demister, 62. Baffle plate. Detailed Implementation
[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0024] The directions mentioned in this manual are based on the directions shown in the attached diagram and represent only relative positional relationships, not absolute positional relationships.
[0025] like Figure 1 and Figure 2As shown, a wet dust collector with vanes and baffles includes a circular cylinder 10. The bottom of the cylinder 10 is sealed with a base plate 18. A base plate support 17 is installed on the base plate 18 inside the cylinder 10. A base plate 16 is installed on the base plate support 17. The periphery of the base plate 16 is sealed to the inner wall of the cylinder 10. The base plate 16 is inclined, that is, one side of the base plate 16 is lower than the other side. The lower part of the cylindrical body 10 is provided with an air inlet 28. Inside the cylindrical body 10, above the air inlet 28, is a cyclone separator 30. Above the cyclone separator 30 is a first spray device, referred to as the first spray device 40. Above the first spray device 40 is a demister 60, i.e., the first spray device 40 is positioned above the demister 60. Above the demister 60 is a second spray device, referred to as the second spray device 50. The first spray device 40 is connected to the circulating washing liquid inlet 23, and the second spray device 50 is connected to the rinsing water inlet 21. The cylindrical wall of the cylindrical body 10 above the second spray device 50 slopes towards the center of the cylindrical body 10 to form a conical section. The top of the conical section is provided with an air outlet 29. Industrial waste gas enters the cylindrical body 10 through the air inlet 28, and after being dusted by the cyclone separator 30, the first spray device 40, the demister 60, and the second spray device 50, it is discharged from the dust collector through the air outlet 29.
[0026] like Figure 1 and Figure 4 As shown, in this embodiment, two hydrocyclones 30 are provided, and the two hydrocyclones 30 are stacked one on top of the other inside the cylinder 10. Preferably, both hydrocyclones 30 are made of fiberglass. The two hydrocyclones 30 have the same structure, including an annular plate 34 whose outer peripheral edge is connected to the inner wall of the cylinder 10. A vertically arranged shroud 36 is connected to the inner side of the annular plate 34. A circular blind plate 31 concentric with the shroud 36 is suspended at the center of the shroud 36. Multiple blades 38 are connected between the blind plate 31 and the shroud 36. Each blade 38 is circumferentially spaced between the blind plate 31 and the shroud 36, and each blade 38 is inclined and arranged in a spiral shape. The ring plate 34 is provided with four guide ports 33 at equal intervals. An overflow pipe 32 is connected to the lower side of the ring plate 34 corresponding to the position of the guide ports 33. The lower end of the overflow pipe 32 is connected to a guide pipe 39 that extends obliquely towards the center of the cylinder 10. The water accumulated on the ring plate 34 will flow from the guide ports 33 into the overflow pipe 32, and then fall to the bottom of the cylinder 10 through the guide pipe 39, forming a water collection pool at the bottom of the cylinder 10 for the spraying device to circulate.
[0027] like Figure 1 and Figure 3 As shown, the first spraying device 40 and the second spraying device 50 have the same structure. Therefore, the following description will only take the first spraying device 40 as an example to elaborate on the specific structure of the spraying device:
[0028] The first spray device 40 includes a spray main pipe 42, one end of which extends out of the cylinder 10 and connects to the circulating washing liquid inlet 23. First spray branch pipes 44 are connected to both sides of the end of the spray main pipe 42 located inside the cylinder 10. The first spray branch pipes 44 have a circular structure, forming a closed ring together with the end of the spray main pipe 42. The first spray branch pipes 44 are horizontally positioned. A straight second spray branch pipe 46 is connected to the end of the spray main pipe 42 located inside the cylinder 10. The extension direction of the second spray branch pipe 46 is consistent with the extension direction of the spray main pipe 42. The end of the second spray branch pipe 46 connects to the first spray branch pipe 44. The second spray branch pipe 46 passes through the center of the first spray branch pipe 44, and the center of the first spray branch pipe 44 coincides with the center of the second spray branch pipe 46. Multiple spray heads 48 are evenly spaced on the lower side of the first spray branch pipe 44. Preferably, eight spray heads 48 are provided on the first spray branch pipe 44. Spray heads 48 are also provided on the lower side of the second spray branch pipe 46, but only one spray head 48 is provided on the second spray branch pipe 46. This spray head 48 is positioned at the center of the second spray branch pipe 46. Preferably, the spray head 48 is a solid conical spiral atomizing nozzle with an atomization angle of 120°, a working pressure of 0.25 MPa, a flow rate of 60 L / min per spray head, and is made of S22053 stainless steel. The nine spray heads 48 can horizontally cover the entire cylinder 10, ensuring sufficient contact between the gas and the spray liquid and improving the dust removal effect. Four mounting brackets 49 are fixed to the inner wall of the cylinder 10, and the first spray branch pipe 44 is fixed to the four mounting brackets 49, thereby installing the entire first spray device 40 inside the cylinder 10.
[0029] like Figure 1 As shown, in this embodiment, the demister 60 is preferably made of fiberglass. The demister 60 includes two annular plates that are arranged parallel to each other and connected to the inner wall of the cylinder 10. Multiple baffles 62 are vertically arranged in the middle of the two annular plates. The upper end of the edge of each baffle 62 is connected to the upper annular plate, and the lower end is connected to the lower annular plate. Each baffle 62 is W-shaped and placed on its side. There are many baffles 62, and they are closely arranged. There are gaps between two adjacent baffles 62 to allow water and gas to pass through. The bending structure of the baffles 62 allows pollutants in the gas to be adsorbed on the surface of the baffles 62, thereby playing a further role in dust removal.
[0030] like Figure 1 and Figure 2As shown, the cylinder 10 has a drain port 20 at the lower end of the base plate 16, which connects to the interior of the cylinder 10. The inclined base plate 16 ensures that all liquid in the collection tank can be drained during dust collector maintenance or replacement of the circulating washing liquid. An overflow port 22 is located above the drain port 20 and below the lower side of the air inlet 28 on the cylinder 10, allowing excess liquid in the cylinder 10 to flow out of the dust collector. On the other side of the cylinder 10, i.e., the higher end of the base plate 16, a low level gauge interface 26 is located on the upper side of the base plate 16, and a high level gauge interface 27 is located above the low level gauge interface 26 and below the lower side of the air inlet 28. The low level gauge interface 26 and the high level gauge interface 27 are used to install low level gauges and high level gauges (not shown in the figure) to detect the liquid level of the circulating washing liquid in the collection tank.
[0031] like Figure 1 and Figure 2 As shown, the cylinder 10 is provided with multiple inspection ports 24 from top to bottom. In this embodiment, four inspection ports 24 are preferably provided. The four inspection ports 24 are respectively located between the second spray device 50 and the demister 60, between the first spray device 40 and the upper cyclone separator 30, between the two cyclone separators 30, and between the lower cyclone separator 30 and the overflow port 22. That is, each inspection port 24 is located above the overflow port 22, and the four inspection ports 24 are located on the same vertical line. They are used as openings for personnel to enter and exit the demister during maintenance. During normal operation, the inspection ports 24 are closed.
[0032] like Figure 1 As shown, in order to enhance the mechanical strength of the cylinder 10 and increase the service life of the dust collector, this embodiment provides multiple reinforcing rings 12 on the outer periphery of the cylinder 10. Preferably, this embodiment provides three reinforcing rings 12. The three reinforcing rings 12 are respectively located below the first spray device 40, below the hydrocyclone 30 located on the lower side, and below the overflow port 22 and the high liquid level gauge interface 27 from top to bottom.
[0033] like Figure 1 and Figure 2 As shown, a lifting lug 14 is provided on each of the top two sides of the cylinder 10. The lifting lug 14 is used for hooking a crane or trolley, which can facilitate the transportation of the dust collector.
[0034] In summary, the wet dust collector with swirl vanes and baffles of this invention can perform three dust removal processes on the industrial waste gas entering it, with good dust removal effect and the discharged gas can meet the emission standards.
[0035] This utility model is not limited to the specific embodiments described above. Any modifications made by those skilled in the art based on the above concept without creative effort shall fall within the protection scope of this utility model.
Claims
1. A wet dust collector with swirl vanes and baffles, characterized in that, The device includes a cylinder (10), with an air inlet (28) at the bottom. A cyclone separator (30) is located inside the cylinder (10) above the air inlet (28). A demister (60) is located above the cyclone separator (30). Spraying devices are provided between the cyclone separator (30) and the demister (60) and above the demister (60). The two spraying devices are respectively connected to a circulating washing liquid inlet (23) and a rinsing water inlet (21). An air outlet (29) is located at the top of the cylinder (10).
2. The wet dust collector with swirl vanes and baffles according to claim 1, characterized in that, The bottom of the cylinder (10) is sealed with a base plate (18), and a base plate bracket (17) is installed on the base plate (18) located inside the cylinder (10). A base plate (16) is installed on the base plate bracket (17), and the base plate (16) is inclined.
3. The wet dust collector with swirl vanes and baffles according to claim 2, characterized in that, Two hydrocyclones (30) are provided, and the two hydrocyclones (30) are stacked one on top of the other.
4. The wet dust collector with swirl vanes and baffles according to claim 3, characterized in that, The hydrocyclone (30) includes an annular plate (34) connected to the inner wall of the cylinder (10), and a shroud (36) is connected to the inner side of the annular plate (34). A circular blind plate (31) is provided at the center of the shroud (36), and multiple blades (38) are spirally connected between the blind plate (31) and the shroud (36).
5. The wet dust collector with swirl vanes and baffles according to claim 4, characterized in that, The ring plate (34) is provided with multiple flow guide ports (33). An overflow pipe (32) is connected to the lower side of the ring plate (34) corresponding to the position of the flow guide port (33). The lower end of the overflow pipe (32) is connected to a flow guide pipe (39) that extends obliquely toward the center of the cylinder (10).
6. The wet dust collector with swirl vanes and baffles according to claim 2, characterized in that, The spraying device includes a main spray pipe (42), with annular first spray branch pipes (44) connected to both ends of the main spray pipe (42), and a straight second spray branch pipe (46) connected to the end of the main spray pipe (42). The second spray branch pipe (46) passes through the center of the first spray branch pipe (44) and its end is connected to the first spray branch pipe (44). Multiple spray heads (48) are provided at equal intervals on the lower side of the first spray branch pipe (44), and a spray head (48) is provided at the center of the second spray branch pipe (46).
7. The wet dust collector with swirl vanes and baffles according to claim 2, characterized in that, The demister (60) includes multiple vertically arranged baffles (62).
8. The wet dust collector with swirl vanes and baffles according to claim 7, characterized in that, The cylinder (10) is provided with a drain port (20) connecting to the interior of the cylinder (10) at the position corresponding to the lower end of the bottom plate (16), and an overflow port (22) is provided on the cylinder (10) above the drain port (20); the cylinder (10) located between the upper end of the bottom plate (16) and the air inlet (28) is provided with a low liquid level gauge interface (26) and a high liquid level gauge interface (27).
9. The wet dust collector with swirl vanes and baffles according to claim 8, characterized in that, The cylinder (10) located above the overflow port (22) is provided with multiple inspection ports (24).
10. The wet dust collector with swirl vanes and baffles according to claim 1, characterized in that, The outer periphery of the cylinder (10) is provided with multiple reinforcing rings (12).