Wet dust removal system
By designing a wet dust removal system including spray box, flue, separation box and defog box, the problem of large footprint and maintenance difficulties of wet dust collectors is solved, and a smaller footprint and more convenient maintenance are achieved, while improving dust removal efficiency.
Patent Information
- Application Number
- CN202421893196.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-06
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-08-06
AI Technical Summary
The existing wet dust collectors require a larger concrete pool in the factory, which leads to a large area and difficulty in maintaining.
A wet dust removal system is designed, including a spray box, flue, separation box and defog box. The liquid is recycled through the liquid supply pipe network and reused for atomization and condensation, avoiding the use of large water tanks.
The system reduces footprint, simplifies maintenance, and improves system efficiency through partially overlapping liquid storage, spraying and defogging areas.
Smart Images
Figure CN222998494U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of flue gas dust removal, and particularly relates to a wet dust removal system. Background Art
[0002] At present, electrostatic precipitation, bag filters, and wet dust collectors are used to remove dust from flue gas during the dust treatment processes in coal-fired power plants, steel mills, etc. Among them, there are various forms of wet dust collectors, such as the form of a combination of a concrete water tank and a circular tower, and the multi-cone bin form, etc. These forms of wet dust collectors all require a relatively large water tank to be configured in the factory area, which makes the entire wet dust removal structure occupy a large area, and the maintenance of the concrete water tank is relatively difficult. Summary of the Utility Model
[0003] An embodiment of the utility model provides a wet dust removal system, aiming to solve the technical problems that the existing wet dust collectors need to configure a relatively large concrete water tank in the factory area, resulting in a large occupied area and difficult maintenance.
[0004] To achieve the above object, the technical solution adopted by the utility model is: to provide a wet dust removal system, including a spray box, a flue arranged on the front side of the spray box, separation boxes and demisting boxes arranged on the left and right sides of the spray box. An inlet for flue gas communicating with the flue is arranged at the top of the front side of the spray box. An atomization coagulation layer is arranged in the spray box below the inlet for flue gas. A demisting device is arranged in the demisting box. An outlet for flue gas is arranged on the top side wall of the demisting box. The bottoms of the separation box, the spray box and the demisting box are communicated. The separation box is used to recover the liquid in the demisting box and the spray box and supply the liquid to the atomization coagulation layer.
[0005] In a possible implementation manner, a buffer box is further arranged on the front side of the spray box. The buffer box is communicated between the flue and the spray box. The bottom surface of the buffer box is lower than the bottom surface of the flue. The flue gradually slopes downward along the direction close to the buffer box.
[0006] In a possible implementation manner, spray heads are arranged in the flue. A recovery pipe communicating with the separation box is further arranged at the bottom of the buffer box.
[0007] In a possible implementation manner, multiple layers of the atomization coagulation layer are arranged at intervals in the vertical direction. A liquid supply pipe network is further connected between the separation box and the spray box. The liquid supply pipe network includes a main pipe body communicated with the separation box, a power pump arranged on the main pipe body, and a plurality of branch pipe bodies communicated with the main pipe body. The plurality of branch pipe bodies are correspondingly communicated with the multiple layers of the atomization coagulation layer one by one. A control valve is arranged on each branch pipe body.
[0008] In a possible implementation, an overflow trough is provided on the separation box, and the main body is communicated with the overflow trough.
[0009] In a possible implementation, the atomization condensation layer includes grid pipes and nozzles distributed on the upper and lower sides of the grid pipes.
[0010] In a possible implementation, the demisting device includes a tube bundle demister and a flat demister arranged at intervals up and down.
[0011] In a possible implementation, two groups of support beams are further provided in the demisting box, one group of the support beams is used to support the tube bundle demister, and the other group of the support beams is used to support the flat demister.
[0012] In a possible implementation, a liquid inlet is provided on the right side of the separation box, a partition is provided between the separation box and the spray box, and an overflow hole communicated with the liquid inlet is provided on the partition.
[0013] In a possible implementation, a connection channel is provided between the bottom of the demisting box and the spray box, and the connection channel is detachably connected to the spray box.
[0014] In the solution shown in the embodiment of the present application, compared with the prior art, the flue gas is introduced through the flue and enters the spray box from the smoke inlet at the top of the spray box. Since the bottom of the spray box is communicated with the demisting box, the flue gas will flow downward from the top of the spray box. During this flowing process, it passes through the atomization condensation layer, sprays the flue gas, adsorbs the dust inside the flue gas, and the sprayed liquid will fall to the bottom of the spray box. Since the bottom of the spray box is the sprayed liquid and this liquid is communicated with the separation box, it also blocks the flue gas from entering the separation box. Therefore, after the flue gas enters the bottom of the spray box, it will enter the demisting box. An outlet is provided at the top of the demisting box. Therefore, when the flue gas flows upward through the demisting device in the demisting box, the water mist contained in the flue gas will be removed, and the water mist will fall to the bottom of the demisting box. The demisting box is communicated with the spray box. Therefore, the liquids at the bottoms of the demisting box and the spray box will be recovered into the separation box together and flow back to the atomization condensation layer. The wet dust removal system of the present utility model can hold liquids at the bottoms of both the spray box and the demisting box, and the separation box can also recycle the liquids. Compared with the traditional large water tank, the structure of the present application partially overlaps the area for holding liquids with the spraying area and the demisting area, occupying less floor space and being more convenient for maintenance. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a front view structural schematic diagram of a wet dust removal system provided by an embodiment of the present utility model;
[0016] Figure 2A schematic diagram of the top view of the wet dust removal system provided by an embodiment of the utility model;
[0017] Figure 3 For along Figure 2 Schematic diagram of the cross-sectional structure along the AA line;
[0018] Figure 4 A schematic diagram of the main structure of a wet dust removal system provided in another embodiment of the utility model.
[0019] Description of reference numerals:
[0020] 10-spray box; 11-smoke inlet; 12-atomization condensation layer; 121-grid pipe; 122-nozzle;
[0021] 20- Flue;
[0022] 30-separation box; 31-overflow tank; 32-liquid inlet;
[0023] 40-demister box; 41-demister device; 411-tube bundle demister; 412-flat plate demister; 42-smoke outlet; 43-support beam;
[0024] 50- cache box; 51- sprinkler head; 52- recovery pipe;
[0025] 60-liquid supply network; 61-main body; 62-power pump; 63-branch body; 64-control valve;
[0026] 70- partition; 71- overflow hole;
[0027] 80-Connection channel. DETAILED DESCRIPTION
[0028] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.
[0029] In the claims, specification and the above-mentioned drawings of the utility model, unless otherwise clearly defined, the use of terms such as "first", "second" or "third" etc. is to distinguish different objects rather than to describe a specific order.
[0030] In the claims, specification and the above drawings of the utility model, the terms "upper", "lower", "top" and "bottom" are used in conjunction with Figure 1 and Figure 3 The directions are the same as those in the Figure 2 and Figure 3The directions marked are the same. The terms "left" and "right" are the same as those marked in Figure 1 and Figure 2 The directions marked are the same; for the remaining orientation terms, unless otherwise clearly defined, such as using terms like "inside", "outside", "center", "lateral", "longitudinal", "horizontal", "vertical", "clockwise", "counterclockwise", "high", "low", etc. to indicate the orientation or positional relationship, it is based on the orientation and positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it should not be construed as limiting the specific protection scope of the present invention.
[0031] In the claims, the description and the above-mentioned drawings of the present invention, unless otherwise clearly defined, when using the terms "fixed connection" or "fixedly connected", it should be understood in a broad sense, that is, any connection method without displacement relationship and relative rotation relationship between the two, that is, including non-detachable fixed connection, detachable fixed connection, being integrated as one body, and being fixed connected through other devices or elements.
[0032] In the claims, the description and the above-mentioned drawings of the present invention, when using the terms "comprising", "having" and their variants, are intended to mean "including but not limited to".
[0033] Please refer to Figures 1 to 4 together. Now, the wet dust removal system provided by the present invention will be described. The wet dust removal system includes a spray box 10, a flue 20 provided on the front side of the spray box 10, separation boxes 30 and demisting boxes 40 provided on the left and right sides of the spray box 10. An inlet 11 communicating with the flue 20 is provided at the top of the front side of the spray box 10. An atomization coagulation layer 12 is provided in the spray box 10 below the inlet 11. A demisting device 41 is provided in the demisting box 40. An outlet 42 is provided on the top side wall of the demisting box 40. The bottoms of the separation box 30, the spray box 10 and the demisting box 40 are communicated. The separation box 30 is used to recover the liquid in the demisting box 40 and the spray box 10 and supply the liquid to the atomization coagulation layer 12.
[0034] The wet dust removal system provided in this embodiment, compared with the prior art, the flue gas is introduced through the flue 20 and enters the spray box 10 from the smoke inlet 11 at the top of the spray box 10. Since the bottom of the spray box 10 is communicated with the demisting box 40, the flue gas will flow downward from the top of the spray box 10. During this flowing process, it passes through the atomization and coagulation layer 12, sprays the flue gas, adsorbs the dust inside the flue gas, and the sprayed liquid will fall to the bottom of the spray box 10. Since the bottom of the spray box 10 is the sprayed liquid and this liquid is communicated with the separation box 30, it also blocks the flue gas from entering the separation box 30. Therefore, after the flue gas enters the bottom of the spray box 10, it will enter the demisting box 40. The top of the demisting box 40 is provided with a smoke outlet 42. Therefore, when the flue gas flows upward through the demisting device 41 in the demisting box 40, the water mist contained in the flue gas will be removed, and this water mist will fall to the bottom of the demisting box 40. The demisting box 40 is communicated with the spray box 10. Therefore, the liquids at the bottoms of the demisting box 40 and the spray box 10 will be recycled to the separation box 30 together and flow back to the atomization and coagulation layer 12. The wet dust removal system of the present utility model can hold liquids at the bottoms of both the spray box 10 and the demisting box 40, and the separation box 30 can also recycle and utilize the liquids. Compared with the traditional setting of a whole large water tank, the structure of this application partially overlaps the area for holding liquids with the spraying area and the demisting area, occupying less floor space and being more convenient for maintenance.
[0035] In some embodiments, an improved implementation manner of the above wet dust removal system can adopt the structure as Figures 2 to 3 shown. Refer to Figures 2 to 3 , a buffer tank 50 is further provided on the front side of the spray box 10. The buffer tank 50 is communicated between the flue 20 and the spray box 10. The bottom surface of the buffer tank 50 is lower than the bottom surface of the flue 20, and the flue 20 gradually slopes downward along the direction close to the buffer tank 50. The smoke outlet end of the flue 20 is lower than the smoke inlet 11, and since the flue 20 slopes downward more and more close to the buffer tank 50, when the flue gas enters the buffer tank 50, it first enters the bottom of the buffer tank 50 and then flows upward through the smoke inlet 11 into the spray box 10. In this process, heavier dust in the flue gas will fall into the buffer tank 50 during the upward flowing process in the buffer tank 50, thereby reducing the burden on the spray box 10 for removing dust in the flue gas and also improving the removal efficiency of the spray box 10 for dust in the flue gas.
[0036] In some embodiments, an improved implementation manner of the above flue 20 can adopt the structure as Figures 2 to 3 shown. Refer to Figures 2 to 3, a spray head 51 is provided in the flue 20, and a recovery pipe 52 communicating with the separation box 30 is further provided at the bottom of the buffer tank 50. Pretreating the flue gas in the flue 20 can preliminarily reduce the dust content in the flue gas, and then enter the spray box 10 for further removal of dust. By utilizing the flow process before the flue gas enters the spray box 10, the dust removal effect on the flue gas can be improved; the liquid after spraying flows into the buffer tank 50 through the inclined flue 20 and can enter the separation box 30 through the recovery pipe 52 at the bottom of the buffer tank 50, and can be reused for supplying liquid to the atomized condensation layer to avoid waste of resources.
[0037] It should be noted that the liquid sprayed by the spray head 51 and in the spray box 10 is mainly water, and the dust in the flue gas is attached through the spraying of water to achieve dust removal of the flue gas.
[0038] Specifically, the spray head 51 can also communicate with the separation box 30, and the production cost can be saved by utilizing the liquid recovered in the separation box 30.
[0039] In some embodiments, a specific liquid supply structure of the above separation box 30 to the spray box 10 can adopt structures such as Figure 1 , Figure 3 and Figure 4 as shown. Refer to Figure 1 , Figure 3 and Figure 4 , the atomized condensation layer 12 is provided with multiple layers at intervals in the vertical direction, and a liquid supply pipe network 60 is also connected between the separation box 30 and the spray box 10. The liquid supply pipe network 60 includes a main pipe body 61 communicating with the separation box 30, a power pump 62 provided on the main pipe body 61, and a plurality of branch pipe bodies 63 communicating with the main pipe body 61. The plurality of branch pipe bodies 63 are in one-to-one correspondence and communication with the multiple layers of atomized condensation layers 12, and a control valve 64 is provided on each branch pipe body 63. The atomized condensation layer is provided with multiple layers, which can cover a longer flue gas passing path and has a better dust removal effect on the flue gas; by simultaneously supplying liquid to multiple atomized condensation layers through the liquid supply pipe network 60, the reuse of the liquid in the separation box 30 is also realized, and a control valve 64 is provided on the branch pipe body 63 corresponding to each atomized condensation layer 12. Different numbers and different positions of the atomized condensation layers 12 can be opened by switching different numbers of control valves 64, and the spraying flow rate can also be controlled according to different heights, making it more flexible to use and meeting different production requirements.
[0040] In some embodiments, an improved implementation manner of the above separation box 30 can adopt structures such as Figure 1 and Figure 4 as shown. Refer to Figure 1 and Figure 4, an overflow tank 31 is provided on the separation tank 30, and the main pipe body 61 communicates with the overflow tank 31. The liquid recovered into the separation tank 30 is all carried with dust. By providing the overflow tank 31, the clear liquid on the upper layer after the liquid stands still in the separation tank 30 can flow into the overflow tank 31, ensuring the dust removal effect on the flue gas after the liquid is sprayed out from the atomization coagulation layer 12.
[0041] In some embodiments, a specific implementation manner of the above atomization coagulation ice layer can adopt, for example Figure 1 , Figure 3 and Figure 4 shown structure. See Figure 1 , Figure 3 and Figure 4 , the atomization coagulation layer 12 includes a grid pipe 121 and nozzles 122 distributed on the upper and lower sides of the grid pipe 121. The grid pipe 121 communicates with the corresponding branch pipe body 63. By spraying liquid on both the upper and lower sides, the spraying area can be increased, and in two adjacent grid pipes 121, the liquid sprayed by the nozzles 122 below in the upper grid pipe 121 and the liquid sprayed by the nozzles 122 above in the lower grid pipe 121 will collide crosswise, improving the uniformity of the liquid distribution in the spraying box 10, thereby increasing the contact area with the flue gas and improving the dust removal efficiency of the flue gas.
[0042] In some embodiments, a specific implementation manner of the above demisting device 41 can adopt, for example Figure 1 and Figure 4 shown structure. See Figure 1 and Figure 4 , the demisting device 41 includes a tube bundle demister 411 and a flat demister 412 arranged at intervals up and down. By arranging two types of demisters in one demisting box 40, the respective advantages of the two types of demisters can be utilized to improve the removal efficiency of water droplets in the flue gas.
[0043] In some embodiments, an improved implementation manner of the above demisting device 41 can adopt, for example Figure 1 and Figure 4 shown structure. See Figure 1 and Figure 4 , two groups of support beams 43 are further provided in the demisting box 40. One group of support beams 43 is used to support the tube bundle demister 411, and the other group of support beams 43 is used to support the flat demister 412. By installing the two demisters through the support beams 43, the installation and subsequent maintenance are facilitated.
[0044] It is easy to think that, in order to meet the installation stability of the demister, multiple support beams 43 will be provided in the demisting box 40. The multiple support beams 43 can be in shapes such as parallel, cross, grid, etc. All the support beams 43 used to install the tube bundle demister 11 form the same group, and similarly, the remaining support beams 43 used to install the flat demister 412 form another group.
[0045] In some embodiments, an improved implementation of the above-mentioned separation tank 30 may adopt a structure as shown in Figure 1 and Figure 4 . Referring to Figure 1 and Figure 4 , a liquid inlet 32 is provided on the right side of the separation tank 30. A partition plate 70 is provided between the separation tank 30 and the spray tank 10, and an overflow hole 71 communicating with the liquid inlet 32 is provided on the partition plate 70. The partition plate 70 separates the space between the separation tank 30 and the spray tank 10, and the overflow hole 71 is only provided at a position near the top of the partition plate 70. The bottom of the spray tank 10 is communicated with the bottom of the demisting tank 40. Therefore, when the liquid levels at the bottoms of the spray tank 10 and the demisting tank 40 rise to the position of the overflow hole 71, the liquid flows into the side of the partition plate 70 close to the separation tank 30, and then flows into the separation tank 30 through the liquid inlet 32. By setting the overflow hole 71 in this embodiment structure, the amount of dust entering the separation tank 30 can be reduced, and thus the proportion of clear liquid in the separation tank 30 can be increased to meet the liquid supply requirement for the atomization coalescence layer 12.
[0046] In some embodiments, a modified connection structure between the above-mentioned demisting tank 40 and the spray tank 10 may adopt a structure as shown in Figure 4 . Referring to Figure 4 , a connection channel 80 is provided between the bottoms of the demisting tank 40 and the spray tank 10, and the connection channel 80 is detachably connected to the spray tank 10. Considering the environmental protection requirements in different regions, the connection channel 80 and the spray tank 10 are detachable, so that the demisting tank 40 and the spray tank 10 can be separately arranged. As a connection structure, the connection channel 80 can be selected with a suitable length according to the actual distance between the storage tank and the spray tank 10.
[0047] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A wet dust removal system, characterized in that: The utility model comprises a spray box, a flue arranged at the front side of the spray box, a separation box and a demister box arranged at the left and right sides of the spray box, a smoke inlet connected to the flue is arranged at the top of the front side of the spray box, an atomizing condensation layer located below the smoke inlet is arranged in the spray box, a demister device is arranged in the demister box, a smoke outlet is arranged on the top side wall of the demister box, the separation box, the spray box and the demister box are connected at the bottom, the separation box is used for recovering the liquid in the demister box and the spray box, and supplying liquid to the atomizing condensation layer.
2. The wet dust removal system according to claim 1, characterized in that: A cache box is also provided on the front side of the spray box. The cache box is connected between the flue and the spray box. The bottom surface of the cache box is lower than the bottom surface of the flue. The flue gradually slopes downward in the direction close to the cache box.
3. The wet dust removal system according to claim 2, characterized in that: A sprinkler head is provided in the flue, and a recovery pipe connected to the separation box is also provided at the bottom of the cache box.
4. The wet dust removal system according to claim 1, characterized in that: The atomized condensation layer is provided with multiple layers at intervals along the up and down directions. A liquid supply network is also connected between the separation box and the spray box. The liquid supply network includes a main pipe body connected to the separation box, a power pump arranged on the main pipe body, and a plurality of branch pipe bodies connected to the main pipe body. The plurality of branch pipe bodies are connected to the multiple layers of the atomized condensation layer one by one, and each of the branch pipe bodies is provided with a control valve.
5. The wet dust removal system according to claim 4, characterized in that: The separation box is provided with an overflow groove, and the main pipe is communicated with the overflow groove.
6. The wet dust removal system according to claim 1 or 4, characterized in that: The atomized condensation layer includes a grid pipe and nozzles distributed on the upper and lower sides of the grid pipe.
7. The wet dust removal system according to claim 1, characterized in that: The demisting device comprises a tube bundle demisting device and a flat plate demisting device which are arranged in an upper and lower interval.
8. The wet dust removal system according to claim 7, characterized in that: Two groups of support beams are also provided in the demister box, wherein one group of support beams is used to support the tube bundle demister, and the other group of support beams is used to support the flat plate demister.
9. The wet dust removal system according to claim 1, characterized in that: A liquid inlet is arranged on the right side of the separation box, a partition is arranged between the separation box and the spray box, and an overflow hole communicating with the liquid inlet is arranged on the partition.
10. The wet dust removal system according to claim 1, characterized in that: A connecting passage is provided between the demisting box and the bottom of the spray box, and the connecting passage is detachably connected to the spray box.