Bubble reducing device and micro-bubble tower reactor
By using the cutting disc and ultrasonic components of the bubble reduction device, the problem of microbubble aggregation leading to increased size was solved, achieving bubble size reduction and uniform distribution, thus improving the reaction effect of the microbubble tower reactor.
Patent Information
- Application Number
- CN202422742345.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-11
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-11-11
AI Technical Summary
Microbubbles coalesce within the reactor, causing them to grow larger and affecting the reaction efficiency.
A bubble reduction device, including a cutting disc and an ultrasonic component, is used to gradually reduce the bubble size through the rotation of the cutting disc and the action of ultrasound, ensuring that the bubbles are evenly distributed in the microbubbling tower reactor.
It effectively reduces bubble size, improves the gas-liquid reaction effect, and avoids bubble coalescence that affects the reaction effect.
Smart Images
Figure CN223490917U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of microbubble generation technology, specifically to a bubble diameter reduction device and a microbubble tower reactor. Background Technology
[0002] Microbubble tower reactors are widely used in tail gas treatment. They can generate microbubbles inside the reactor. As the microbubbles flow in the reactor, they will coalesce due to their close proximity, causing the bubbles to grow larger and affecting the reaction effect. Utility Model Content
[0003] The purpose of this invention is to overcome the problem that microbubbles in the prior art will aggregate and become larger, and to provide a bubble diameter reduction device and a microbubble tower reactor. The bubble diameter reduction device has the function of reducing the size of the enlarged bubbles.
[0004] To achieve the above objectives, the first aspect of this utility model provides a bubble reduction device, comprising: a fixing component; a cutting disc rotatably disposed relative to the fixing component, the cutting disc having an input side, an output side, and an air hole extending from the input side to the output side, the air hole being configured to cut bubbles moving from the input side to the output side under the rotation of the cutting disc, thereby reducing the size of the bubbles; and an ultrasonic component disposed on the input side of the cutting disc for rupturing bubbles on the input side.
[0005] Preferably, the cutting disc is divided into multiple distribution areas, and multiple pores are formed in each distribution area at intervals, and the opening ratios of the multiple distribution areas are different.
[0006] Preferably, the cutting disc is formed into a circular disc structure, and multiple distribution areas are formed into an annular area with the center of the cutting disc as the center. The multiple distribution areas are distributed sequentially along the radial direction of the cutting disc, and the porosity of the pores in the distribution areas from the center of the cutting disc to the edge increases sequentially.
[0007] Preferably, the cutting disc includes a connecting ring and one or more perforated plates fixed within the connecting ring, with air holes formed on the perforated plates, and the multiple perforated plates are distributed sequentially at intervals along the axial direction of the connecting ring.
[0008] Preferably, the size and / or shape and / or opening ratio of the pores among the multiple perforated plates are different.
[0009] Preferably, the contact angle between the surface of the perforated plate and the liquid is 110° to 130°.
[0010] Preferably, the fixing component is formed into a ring structure, the cutting disk is coaxially disposed inside the fixing component, the connecting ring is movably and sealedly connected to the inner ring of the fixing component, and the bubble diameter reduction device also includes a driving component and a transmission component connected to the driving component. The driving force of the driving component is output to the connecting ring after the direction is changed by the transmission component.
[0011] Preferably, the outer ring of the connecting ring is toothed, the transmission component is formed as a rod-shaped structure, and its surface is formed with threads that mesh with the teeth. The extension direction of the transmission component is perpendicular to the axial direction of the connecting ring.
[0012] Preferably, the ultrasonic assembly includes an ultrasonic transmitter extending radially along the cutting disc and a plurality of ultrasonic probes arranged sequentially at intervals on the ultrasonic transmitter.
[0013] The second aspect of this utility model provides a microbubbling tower reactor, including a reaction vessel and the aforementioned bubble reduction device, with a fixing component sealed and fixed to the inner wall of the reaction vessel.
[0014] With the above technical solution, when the bubble shrinking device is set inside the microbubble tower reactor, the fixing component is fixed inside the microbubble tower reactor. The bubbles formed after the microbubbles aggregate are located on the input side of the cutting disk. They first break under the ultrasonic action of the ultrasonic component, that is, they are shrunk once. Then they flow to the output side of the cutting disk, pass through the air hole, and are cut by the action of the rotating cutting disk. They break again, that is, they are shrunk a second time. The bubble size is greatly reduced after the two shrinkings, which reduces the influence of bubble size on the reaction effect. Attached Figure Description
[0015] Figure 1 This is a top view of the bubble diameter reduction device of this utility model;
[0016] Figure 2 This is the front view of the bubble reduction device;
[0017] Figure 3 This is a top view of an embodiment of the perforated plate of the bubble reduction device; and
[0018] Figure 4 This is a top view of another embodiment of the perforated plate.
[0019] Explanation of reference numerals in the attached figures
[0020] 10. Fixing component; 20. Cutting disc; 21. Connecting ring; 22. Perforated plate; 221. Air hole; 30. Ultrasonic assembly; 31. Ultrasonic transmitter; 32. Ultrasonic probe; 33. Signal controller; 34. Signal transmission line; 40. Driving component; 50. Transmission component; 60. Inner flange; 70. First sealing ring; 80. Second sealing ring. Detailed Implementation
[0021] In this invention, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the directions shown in the accompanying drawings. "Inner" and "outer" refer to the inner and outer contours of the corresponding components.
[0022] The specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this application.
[0023] See Figures 1 to 4 As shown, this utility model provides a bubble diameter reduction device, including: a fixing component 10; a cutting disk 20, which is rotatably disposed relative to the fixing component 10, the cutting disk 20 having an input side, an output side, and an air hole 221 extending from the input side to the output side, the air hole 221 being configured to cut bubbles moving from the input side to the output side under the rotation of the cutting disk 20, thereby reducing the size of the bubbles; and an ultrasonic component 30, which is disposed on the input side of the cutting disk 20 for rupturing bubbles on the input side.
[0024] In this embodiment, the bubble on the input side of the cutting disk 20 first bursts under the ultrasonic action of the ultrasonic component 30, undergoing a first-stage diameter reduction, thus decreasing in size. The bubble continues to move towards the output side of the cutting disk 20, and during its passage through the air hole 221, it is cut by the rotation of the cutting disk 20, undergoing a second-stage diameter reduction, further reducing its size. This results in a significant reduction in the size of the bubble on the output side, forming small-diameter microbubbles. When this bubble diameter reduction device is applied to a microbubble tower reactor, it can enhance the reaction effect between the gas in the microbubbles and the liquid in the reactor, avoiding the negative impact of large bubble size on the gas-liquid reaction effect.
[0025] See Figures 1 to 4 As shown, in some embodiments, the cutting disc 20 is divided into multiple distribution areas, and multiple air holes 221 are formed in each distribution area at intervals, and the opening ratios of the multiple distribution areas are different.
[0026] In this embodiment, assuming the pore diameter of the air holes 221 is the same, different opening ratios determine the number of bubbles output on the output side. The larger the opening ratio, the more bubbles are output; the smaller the opening ratio, the fewer bubbles are output. The opening ratio of different distribution areas can be set according to the number of bubbles on the input side, thereby reducing the bubble size while changing the spatial distribution of the bubbles.
[0027] Specifically, the open area ratio of the bubbles is 10% to 90%.
[0028] See Figures 1 to 4As shown, in some embodiments, the cutting disk 20 is formed as a circular disk structure, and multiple distribution areas are formed as annular areas with the center of the cutting disk 20 as the center. The multiple distribution areas are distributed sequentially along the radial direction of the cutting disk 20, and the opening ratio of the pores 221 in the distribution areas from the center to the edge of the cutting disk 20 increases sequentially.
[0029] In this embodiment, when the bubble diameter reduction device is applied to a microbubble tower reactor, when there are many bubbles on the input side located at the center of the cutting disk 20 and few bubbles located at the edge of the cutting disk 20, the aperture ratio of the distribution area at the center of the cutting disk 20 is set to be small and the aperture ratio of the distribution area at the edge is set to be large. This makes the bubbles on the input side distributed from the center of the cutting disk 20 to the edge, thereby making the bubble distribution on the output side more uniform, promoting gas-liquid reaction, and preventing the bubbles on the output side from accumulating in a large number of places, thus preventing the bubbles from coalescing again.
[0030] Specifically, such as Figure 4 As shown, the distribution area can be set to three, and the aperture ratio of the distribution area from the center to the edge of the cutting disc 20 can increase sequentially, namely 20%–50%, 30%–70%, and 50%–80%, respectively. Of course, as... Figure 3 As shown, the cutting disc 20 may also not have a defined distribution area.
[0031] See Figures 1 to 4 As shown, in some embodiments, the cutting disc 20 includes a connecting ring 21 and one or more perforated plates 22 fixed within the connecting ring 21. Air holes 221 are formed on the perforated plates 22, and the multiple perforated plates 22 are distributed sequentially at intervals along the axial direction of the connecting ring 21.
[0032] In this embodiment, when there is one perforated plate 22, the perforated plate 22 is located at the center of the axial direction of the connecting ring 21 and is coaxial with the connecting ring 21; when there are multiple perforated plates 22, all of the multiple perforated plates 22 are coaxial with the connecting ring 21, and a gap is formed between each perforated plate 22 so that the bubble can pass through the air hole 221 of one perforated plate 22 and shrink in diameter, and then pass through the air hole 221 of the next perforated plate 22, so that the size of the bubble can decrease sequentially after passing through each perforated plate 22, ensuring that the size of all the bubbles output from the output side of the cutting disc 20 can meet the requirements and be small enough.
[0033] Specifically, the perforated plate 22 can be a mesh structure, and the mesh holes are the air holes 221. The shape of the air holes 221 is preferably square holes, and the distance between every two adjacent square holes is 200μm. The shape of the air holes 221 can also be round holes; the size of the air holes 221 is 10μm-1000μm.
[0034] The cutting disc 20 can be manufactured by 3D printing or by machining. The material of the cutting disc 20 can be polytetrafluoroethylene, stainless steel, Hastelloy, etc., and different materials are used for different materials in different application environments.
[0035] See Figures 1 to 4 As shown, in some embodiments, the size and / or shape and / or opening ratio of the pores 221 between the plurality of perforated plates 22 are different.
[0036] With the above settings, when the size and / or shape of the pores 221 of the multiple perforated plates 22 are different, the degree of shrinkage of the bubbles passing through the pores 221 of each perforated plate 22 is different, and the size of the pores 221 can be designed according to the required size of the bubbles on the output side of the cutting disc 20; when the opening ratio of the pores 221 of the multiple perforated plates 22 is different, the spatial distribution of the bubbles passing through the pores 221 of each perforated plate 22 is different, and the way the spatial distribution of the bubbles can be gradually changed by the multiple perforated plates 22, so that the bubbles output from the output side of the cutting disc 20 are more evenly distributed in space.
[0037] See Figures 1 to 4 As shown, in some embodiments, the contact angle between the surface of the perforated plate 22 and the liquid is 110° to 130°.
[0038] The above settings make the surface of the perforated plate 22 hydrophobic, so that bubbles will quickly leave the surface of the perforated plate 22 after contacting it, thus preventing bubbles from staying and merging on the surface of the perforated plate 22.
[0039] Specifically, the surface of the perforated plate 22 is hydrophobically treated to form a large contact angle of 110° to 130° with the liquid, preferably 120°.
[0040] See Figures 1 to 4 As shown, in some embodiments, the fixing component 10 is formed into a ring structure, the cutting disk 20 is coaxially disposed inside the fixing component 10, the connecting ring 21 is movably and sealingly connected to the inner ring of the fixing component 10, and the bubble diameter reduction device also includes a driving component 40 and a transmission component 50 connected to the driving component 40. The driving force of the driving component 40 is output to the connecting ring 21 after the direction is changed by the transmission component 50.
[0041] In this embodiment, when the bubble reduction device is applied to a microbubble column reactor, the fixing component 10 is used to fix it inside the reaction vessel of the microbubble column reactor. The driving component 40 is used to provide power for the rotation of the cutting disk 20, and the transmission component 50 is used to change the direction of the driving force of the driving component 40, so that the driving component 40 can avoid the input and output sides of the cutting disk 20. On the one hand, the input and output of bubbles are not interfered with; on the other hand, the bubbles do not come into contact with the driving component 40, thus avoiding erosion of the driving component 40.
[0042] Specifically, the connecting ring 21 is movably and sealed to the inner ring of the fixed component 10 through the first sealing ring 70, and the fixed component 10 can be a flange. The driving component 40 can be a motor. The rotation speed of the cutting disc 20 is within 1400 r / min.
[0043] See Figures 1 to 4 As shown, in some embodiments, the outer ring of the connecting ring 21 is formed with teeth, and the transmission component 50 is formed as a rod-shaped structure with threads that mesh with the teeth on its surface. The extension direction of the transmission component 50 is perpendicular to the axial direction of the connecting ring 21.
[0044] In this embodiment, the connecting ring 21 and the transmission component 50 are meshed and driven by the principle of worm gear. The transmission component 50 is parallel to the radial direction of the connecting ring 21 and can be set on one side of the connecting ring 21. At the same time, the driving component 40 can be set on one side of the connecting ring 21, which improves the space utilization and also avoids the driving component 40 and the transmission component 50 interfering with the flow of bubbles because they are located on the input side and output side of the cutting disk 20.
[0045] See Figures 1 to 4 As shown, in some embodiments, the ultrasonic assembly 30 includes an ultrasonic transmitter 31 extending radially along the cutting disk 20 and a plurality of ultrasonic probes 32 arranged sequentially at intervals on the ultrasonic transmitter 31.
[0046] In this embodiment, the ultrasonic probe 32 is used to send ultrasonic waves to the input side of the cutting disk 20 to break the bubbles on the input side of the cutting disk 20 through vibration, thereby gradually reducing the size of the bubbles in conjunction with the cutting disk 20, and ensuring that the size of the bubbles on the output side can be reduced to a sufficiently small size.
[0047] Specifically, multiple ultrasonic transmitters 31 can be configured, preferably arranged in a straight line on the input side of the cutting disc 20 and extending along the diameter of the connecting ring 21. They can also be arranged in a curved or ring-shaped pattern. The shape of the ultrasonic transmitters 31 is preferably square, but can also be circular or rhomboid. The ultrasonic transmitters 31 can also be curved or ring-shaped. The ultrasonic probes can be circular, and multiple ultrasonic probes 32 are evenly spaced on the ultrasonic transmitters 31, thereby enhancing the ultrasonic effect and allowing the ultrasonic waves to diffuse to the entire input side of the cutting disc 20, rupturing all bubbles on the input side of the cutting disc 20. The ultrasonic assembly 30 also includes a signal controller 33 and a signal transmission line 34. The signal controller 33 is electrically connected to the ultrasonic transmitters 31 via the signal transmission line 34 to control the start and stop of the ultrasonic transmitters 31, and to control the ultrasonic frequency and duration generated by the ultrasonic transmitters 31. The power of the ultrasonic transmitters 31 is 30W to 1000W, preferably 40W to 200W, and the frequency is 40kHz to 500kHz, preferably 60kHz to 100kHz.
[0048] The bubble reduction device also includes an inner flange 60 located on the output side of the cutting disc 20. The inner flange 60 and the connecting ring 21 can be dynamically connected via a second sealing ring 80. When this bubble reduction device is applied to a microbubble column reactor, the inner flange 60 can also be fixedly connected to the inner wall of the reaction vessel via a support-like component to prevent the rotation of the connecting ring 21 from causing the inner flange 60 to rotate. Alternatively, the second sealing ring 80 can be omitted, the inner flange 60 and the connecting ring 21 can be disconnected, and the inner flange 60 can be fixedly connected to the fixing component 10 to prevent the inner flange 60 from affecting the rotation of the connecting ring 21. The ultrasonic transmitter 31 is fixed to the inner ring of the inner flange 60; that is, the inner flange 60 provides an installation position for the ultrasonic transmitter 31.
[0049] This utility model also provides a microbubbling tower reactor, including a reaction vessel and the above-mentioned bubble diameter reduction device, with the fixing component 10 sealed and fixed to the inner wall of the reaction vessel.
[0050] In this embodiment, the bubble diameter reduction device of the microbubble tower reactor has all the technical solutions and effects of the above-mentioned bubble diameter reduction device, which will not be repeated here.
[0051] Specifically, the signal controller 33 of the drive component 40 and the ultrasonic component 30 can be located outside the reaction vessel, and the signal transmission line 34 of the transmission component 50 and the ultrasonic component 30 enters the interior of the reaction vessel from the outside of the reaction vessel and is sealed to the side wall of the reaction vessel.
[0052] The following describes three embodiments of the microbubbling tower reactor of this utility model:
[0053] Example 1:
[0054] (1) Implementation conditions: The bubble size in the bubble group carried by the liquid in the reaction vessel is 400μm~800μm. Due to the fast flow rate of the liquid in the central region of the reaction vessel, the bubbles accumulate in the central region, and the spatial distribution of the bubbles is uneven and the uniformity is poor.
[0055] (2) Implementation materials: such as Figure 1 The perforated plate 22 shown has multiple evenly arranged square holes 221, with a distance of 300 μm between each two adjacent holes 221 and an opening rate of 95% for the holes 221; the ultrasonic transmitter 31 has a power of 50 W and a frequency of 80 kHz; and the cutting disc 20 rotates at a speed of 400 r / min.
[0056] (3) Implementation results: The bubble size output from the output side of the cutting disk 20 is less than 240μm, and the spatial distribution uniformity is improved.
[0057] Example 2:
[0058] (1) Implementation conditions: The bubble size in the bubble group carried by the liquid in the reaction vessel is 200μm to 800μm. Due to the fast flow rate of the liquid in the central region of the reaction vessel, the bubbles accumulate in the central region, and the spatial distribution of the bubbles is uneven and the uniformity is poor.
[0059] (2) Implementation materials: such as Figure 3 The perforated plate 22 shown has multiple evenly arranged circular holes 221 with a diameter of 150 μm and an opening rate of 50%. The ultrasonic transmitter 31 has a power of 50 W and a frequency of 80 kHz. The cutting disc 20 rotates at a speed of 800 r / min.
[0060] (3) Implementation results: The size of the bubbles output from the output side of the cutting disk 20 is less than 110μm, and the spatial distribution uniformity is improved.
[0061] Example 3:
[0062] (1) Implementation conditions: The bubble size in the bubble group carried by the liquid in the reaction vessel is 200μm to 800μm. Due to the fast flow rate of the liquid in the central region of the reaction vessel, the bubbles accumulate in the central region, and the spatial distribution of the bubbles is uneven and the uniformity is poor.
[0063] (2) Implementation materials: such as Figure 4The perforated plate 22 shown has multiple evenly arranged circular holes 221 with a diameter of 120 μm. The cutting disk 20 is divided into three distribution areas from the center to the edge in the radial direction, and the opening ratio of the distribution areas is 20%, 30%, and 50% respectively, that is, the opening ratio is low at the center and high at the edge. The ultrasonic transmitter 31 has a power of 50 W and a frequency of 80 kHz. The rotation speed of the cutting disk 20 is 800 r / min.
[0064] (3) Implementation results: The size of the bubbles output from the output side of the cutting disk 20 is less than 80μm, and the spatial distribution uniformity is significantly improved.
[0065] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings; however, the present invention is not limited thereto. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, including combinations of various specific technical features in any suitable manner. To avoid unnecessary repetition, the present invention will not describe the various possible combinations separately. However, these simple modifications and combinations should also be considered as the content disclosed in the present invention and are all within the protection scope of the present invention.
Claims
1. A bubble diameter reduction device, characterized in that, include: Fixed component (10); A cutting disc (20) is rotatably disposed relative to the fixed component (10). The cutting disc (20) has an input side, an output side, and an air hole (221) extending from the input side to the output side. The air hole (221) is configured to cut bubbles that move from the input side to the output side under the rotation of the cutting disc (20) to reduce the size of the bubbles. as well as An ultrasonic component (30) is disposed on the input side of the cutting disc (20) for rupturing bubbles on the input side.
2. The bubble diameter reduction device according to claim 1, characterized in that, The cutting disc (20) is divided into multiple distribution areas, and multiple pores (221) are formed in each distribution area at intervals, and the opening ratios of the multiple distribution areas are different.
3. The bubble diameter reduction device according to claim 2, characterized in that, The cutting disk (20) is formed into a circular disk structure, and the plurality of distribution areas are formed into an annular area with the center of the cutting disk (20) as the center. The plurality of distribution areas are distributed sequentially along the radial direction of the cutting disk (20), and the porosity of the pores (221) in the distribution areas from the center of the cutting disk (20) to the edge increases sequentially.
4. The bubble diameter reduction device according to claim 1, characterized in that, The cutting disc (20) includes a connecting ring (21) and one or more perforated plates (22) fixed within the connecting ring (21). The perforated plates (22) have air holes (221) formed on them. The perforated plates (22) are distributed sequentially at intervals along the axial direction of the connecting ring (21).
5. The bubble diameter reduction device according to claim 4, characterized in that, The size and / or shape and / or opening ratio of the pores (221) among the multiple perforated plates (22) are different.
6. The bubble diameter reduction device according to claim 4, characterized in that, The contact angle between the surface of the perforated plate (22) and the liquid is 110° to 130°.
7. The bubble diameter reduction device according to claim 4, characterized in that, The fixing component (10) is formed into a ring structure. The cutting disc (20) is coaxially disposed inside the fixing component (10). The connecting ring (21) is movably and sealedly connected to the inner ring of the fixing component (10). The bubble diameter reduction device also includes a driving component (40) and a transmission component (50) connected to the driving component (40). The driving force of the driving component (40) is output to the connecting ring (21) after changing direction through the transmission component (50).
8. The bubble diameter reduction device according to claim 7, characterized in that, The outer ring of the connecting ring (21) is formed with teeth, and the transmission component (50) is formed as a rod-shaped structure with threads on its surface that mesh with the teeth. The extension direction of the transmission component (50) is perpendicular to the axial direction of the connecting ring (21).
9. The bubble reduction device according to any one of claims 1 to 8, characterized in that, The ultrasonic assembly (30) includes an ultrasonic transmitter (31) extending radially along the cutting disc (20) and a plurality of ultrasonic probes (32) arranged sequentially at intervals on the ultrasonic transmitter (31).
10. A microbubbling tower reactor, characterized in that, The device includes a reaction vessel and a bubble reduction device according to any one of claims 1 to 9, wherein the fixing component (10) is sealed and fixed to the inner wall of the reaction vessel.