A multi-stage water film dust removal tower

Abstract

The utility model discloses a multistage water film dust removal tower, including tower body, spray subassembly, filler layer and circulating component, the top of tower body is equipped with gas outlet, and the bottom is equipped with water outlet pipe, the sidewall bottom of tower body is equipped with air inlet, spray subassembly includes the first spray pipe and second spray pipe of being equipped in tower body, and the bottom side of first spray pipe is equipped with a plurality of first spray head, and the bottom side of second spray pipe is equipped with a plurality of second spray head, filler layer is located in the bottom of spray subassembly in tower body and is higher than the air inlet place, circulating component includes circulating pool, water pump and circulating pipe, and circulating pool is located at the bottom of tower body, and is communicated with water outlet pipe, and water pump is located at the drain port of circulating pool bottom, and water pump is communicated first spray pipe and second spray pipe through circulating pipe. Multistage water film dust removal tower of the utility model, two different spray modes cooperate filler layer and form multistage dust removal, improve water mist coverage, and enhance dust removal efficiency.

Description

Technical Field

[0001] This utility model relates to the field of waste gas treatment, and in particular to a multi-stage water film dust removal tower. Background Technology

[0002] Water film dust collectors are a type of high-efficiency flue gas treatment equipment. They mainly use spraying to generate a water film to capture dust particles in the gas through collision. Conventional spray towers mainly spray water downwards, and the water mist coverage depends only on the number of nozzles and the amount of water. This spraying method is prone to the situation that the water mist coverage near the inner wall of the tower is too low, which affects the dust removal efficiency. Utility Model Content

[0003] To address the aforementioned problems, this utility model provides a multi-stage water film dust removal tower. Two different spraying methods combined with a packing layer form a multi-stage dust removal system, which improves the water mist coverage and enhances the dust removal efficiency.

[0004] The technical solution of this utility model is as follows:

[0005] A multi-stage water film dust removal tower includes:

[0006] The tower body has an air outlet at the top and a water outlet at the bottom; the bottom of the side wall of the tower body has an air inlet.

[0007] The spray assembly includes a first spray pipe and a second spray pipe disposed inside the tower body. The bottom side of the first spray pipe is provided with a plurality of first nozzles, and the bottom side of the second spray pipe is provided with a plurality of second nozzles.

[0008] The packing layer is located at the bottom of the spray assembly inside the tower and is higher than the air inlet.

[0009] The circulation component includes a circulating water tank, a water pump, and a circulation pipe. The circulating water tank is located at the bottom of the tower and is connected to the outlet pipe. The water pump is located at the drain outlet at the bottom of the circulating water tank. The water pump is connected to the first spray pipe and the second spray pipe through the circulation pipe.

[0010] In a further technical solution, several branch pipes are evenly arranged on both sides of the first spray pipe, and the first nozzle is located at the bottom of the branch pipe.

[0011] In a further technical solution, the second spray pipe includes a connecting pipe and a C-shaped pipe. The connecting pipe is installed through the tower body and its end is connected to the middle of the C-shaped pipe. The second spray nozzles are evenly distributed on the outside of the C-shaped pipe.

[0012] In a further technical solution, a swirl plate is provided at the bottom of the packing layer, which is higher than the air inlet.

[0013] In a further technical solution, the bottom of the swirl plate is provided with a flushing pipe connected to a clean water source, and the top side of the flushing pipe is provided with several third nozzles.

[0014] In a further technical solution, the circulating water tank is equipped with a baffle to divide the interior of the circulating water tank into a sedimentation chamber and a sludge chamber. The drain outlet is located on one side of the sedimentation chamber, and the sludge chamber is equipped with a sludge outlet on one side. The end of the water outlet pipe extends into the sedimentation chamber and is equipped with an inclined pipe that passes through the baffle and connects to the sludge chamber. A filter port is provided at the connection between the inclined pipe and the water outlet pipe, and a filter screen is provided at the filter port.

[0015] In a further technical solution, the filler layer is a Pall ring, a Raschig ring, or a multifaceted hollow sphere.

[0016] The beneficial effects of this utility model are:

[0017] 1. After entering the tower body through the air inlet, the dust-laden exhaust gas is forced to bend and detour through the water-wetted packing layer, making full contact with the wet packing surface and efficiently capturing fine dust particles. The first and second spray pipes spray water mist downwards and onto the inner wall of the tower body, respectively, to achieve large-area coverage of water mist and form a uniform water film on the inner wall of the tower body. After passing through the packing layer, the exhaust gas can collide with the water mist and the water film on the inner wall of the tower body, and the multi-stage dust removal structure further achieves efficient capture of dust particles.

[0018] 2. The swirl plate can force the dust particles in the waste to be thrown closer to the inner wall of the tower, which is conducive to contact with the water film on the inner wall of the tower;

[0019] 3. Wastewater at the bottom of the tower can be initially separated by a filter screen before entering the sedimentation chamber, which is conducive to efficient circulation and avoids clogging of the first and second nozzles due to excessive impurities in the water. Attached Figure Description

[0020] Figure 1 This is a cross-sectional schematic diagram of the multi-stage water film dust removal tower described in this embodiment of the utility model;

[0021] Figure 2 This is a top view of the first spray pipe in an embodiment of the present invention;

[0022] Figure 3 This is a top view of the second spray pipe in an embodiment of the present invention.

[0023] Explanation of reference numerals in the attached figures:

[0024] 10. Tower body; 11. Support; 12. Air outlet; 13. Water outlet pipe; 14. Air inlet; 15. Baffle plate; 21. First spray pipe; 211. Branch pipe; 212. First nozzle; 22. Second spray pipe; 221. Connecting pipe; 222. C-shaped pipe; 223. Second nozzle; 30. Packing layer; 41. Circulating water tank; 411. Baffle plate; 412. Sedimentation chamber; 4121. Drain outlet; 413. Sludge chamber; 4131. Sewage outlet; 414. Inclined pipe; 415. Filter port; 416. Filter screen; 42. Water pump; 43. Circulation pipe; 44. T-joint; 50. Swirl plate; 60. Flushing pipe; 61. Third nozzle. Detailed Implementation

[0025] The embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0026] Example:

[0027] like Figures 1-3 As shown, a multi-stage water film dust removal tower includes a tower body 10, a spray assembly, a packing layer 30, and a circulation assembly.

[0028] The tower body 10 is supported by a bracket 11 at the bottom, and has an air outlet 12 at the top center. The bottom is funnel-shaped to facilitate the collection of water and sludge. A water outlet pipe 13 is located at the bottom center of the tower body 10. An air inlet 14 is opened at the bottom of the side wall of the tower body 10 for dust-laden exhaust gas to enter. A baffle 15 can be installed on the top inner side of the tower body 10 to remove liquid droplets contained in the gas.

[0029] The spray assembly includes a first spray pipe 21 and a second spray pipe 22 disposed inside the tower body 10. The first spray pipe 21 has several branch pipes 211 evenly arranged on both sides, and a first nozzle 212 is provided on the bottom side of the branch pipe 211. The second spray pipe 22 includes a connecting pipe 221 and a C-shaped pipe 222. The connecting pipe 221 is disposed through the tower body 10 and its end is connected to the middle of the C-shaped pipe 222. A second nozzle 223 is evenly arranged on the outer side of the C-shaped pipe 222 and is disposed towards the inner wall of the tower body 10.

[0030] The packing layer 30 is located at the bottom of the spray assembly inside the tower body 10 and is higher than the air inlet 14. The packing layer 30 can be filled with any one of Pall rings, Raschig rings and multi-faceted hollow spheres.

[0031] The circulation assembly includes a circulating water tank 41, a water pump 42, and a circulation pipe 43. The circulating water tank 41 is located at the bottom of the tower body 10 and is connected to the outlet pipe 13. The water pump 42 is located at the drain outlet 4121 at the bottom of the circulating water tank 41. One end of the water pump 42 is connected to the circulation pipe 43. The end of the circulation pipe 43 is connected to the connecting pipe 221 and the first spray pipe 21 through a T-joint 44.

[0032] The working principle of the above technical solution is as follows:

[0033] During operation, water pump 42 draws water from circulating water tank 41, which then enters the first spray pipe 21 and the second spray pipe 22 through circulating pipe 43. The water is sprayed out from the first nozzle 212 and the second nozzle 223, spraying water mist downwards and onto the inner wall of tower body 10, respectively, achieving large-area coverage of water mist and forming a uniform water film on the inner wall of tower body 10. When dust-laden exhaust gas enters from the air inlet 14 of tower body 10 and passes through the water-wetted packing layer 30, it is forced to bend and detour, making full contact with the wet packing surface, and efficiently capturing fine dust. After passing through the packing layer 30, the exhaust gas can collide with the water mist and the water film on the inner wall of tower body 10, achieving efficient capture of dust particles in the exhaust gas.

[0034] In another embodiment, such as Figure 1 As shown, a swirl plate 50 is also provided at the bottom of the packing layer 30, which is higher than the air inlet 14.

[0035] The swirl plate 50 can force the dust particles in the waste to be thrown closer to the inner wall of the tower body 10, which is conducive to contact with the water film on the inner wall of the tower body 10.

[0036] In another embodiment, such as Figure 1 As shown, the bottom of the swirl plate 50 is provided with a flushing pipe 60 connected to a clean water source, and the top side of the flushing pipe 60 is provided with several third nozzles 61; the flushing pipe 60 and the fan blades facing the swirl plate 50 are spaced apart.

[0037] The flushing pipe 60 not only serves to flush the swirl plate 50, but can also be used to refresh the water in the circulation components.

[0038] In another embodiment, such as Figure 1 As shown, a partition 411 is provided inside the circulating water tank 41, dividing the interior of the circulating water tank 41 into a sedimentation chamber 412 and a sludge chamber 413. A drain outlet 4121 is provided on one side of the sedimentation chamber 412, and a sludge outlet 4131 is provided on one side of the sludge chamber 413. The end of the water outlet pipe 13 extends into the sedimentation chamber 412, and the end of the water outlet pipe 13 is provided with an inclined pipe 414 that passes through the partition 411 and connects to the sludge chamber 413. A filter port 415 connecting the inclined pipe 414 and the water outlet pipe 13 is provided, which connects to the sedimentation chamber 412. A filter screen 416 is provided at the filter port 415. The filter screen 416 is adapted to the bottom side of the inclined pipe 414, and the inclination angle is the same as that of the inclined pipe 414.

[0039] When the sewage at the bottom of the tower body 10 is discharged from the drain outlet 4121, most of it is first filtered by the filter screen 416 and enters the sedimentation chamber 412. The sludge that cannot pass through the filter screen 416 flows into the sludge chamber 413 under its own gravity and the flushing of the subsequent sewage. This allows the sewage to be initially separated by the filter screen 416 before entering the sedimentation chamber 412, which is conducive to efficient circulation and avoids the first nozzle 212 and the second nozzle 223 from being blocked due to too many impurities in the water.

[0040] The embodiments described above merely illustrate specific implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A multi-stage water film dust removal tower, characterized in that, include: Tower body, spray assembly, packing layer, and circulation assembly; The tower body has an air outlet at the top and a water outlet at the bottom; the bottom of the side wall of the tower body has an air inlet. The spray assembly includes a first spray pipe and a second spray pipe disposed inside the tower body. The bottom side of the first spray pipe is provided with a plurality of first nozzles, and the bottom side of the second spray pipe is provided with a plurality of second nozzles. The packing layer is located at the bottom of the spray assembly inside the tower and is higher than the air inlet. The circulation component includes a circulating water tank, a water pump, and a circulation pipe. The circulating water tank is located at the bottom of the tower and is connected to the outlet pipe. The water pump is located at the drain outlet at the bottom of the circulating water tank. The water pump is connected to the first spray pipe and the second spray pipe through the circulation pipe.

2. The multi-stage water film dust removal tower according to claim 1, characterized in that, Several branch pipes are evenly arranged on both sides of the first spray pipe, and the first nozzle is located at the bottom of the branch pipe.

3. The multi-stage water film dust removal tower according to claim 1, characterized in that, The second spray pipe includes a connecting pipe and a C-shaped pipe. The connecting pipe is installed through the tower body and its end is connected to the middle of the C-shaped pipe. The second spray nozzles are evenly distributed on the outside of the C-shaped pipe.

4. The multi-stage water film dust removal tower according to claim 1, characterized in that, The bottom of the packing layer is also equipped with a swirl plate at a position higher than the air inlet.

5. The multi-stage water film dust removal tower according to claim 4, characterized in that, The bottom of the swirl plate is provided with a flushing pipe connected to a clean water source, and the top side of the flushing pipe is provided with several third nozzles.

6. The multi-stage water film dust removal tower according to claim 1, characterized in that, The circulating water tank is equipped with a partition, which divides the interior of the circulating water tank into a sedimentation chamber and a sludge chamber. The drain outlet is located on one side of the sedimentation chamber, and the sludge chamber is equipped with a sludge outlet on one side. The end of the water outlet pipe extends into the sedimentation chamber and is equipped with an inclined pipe that passes through the partition and connects to the sludge chamber. A filter port is provided at the connection between the inclined pipe and the water outlet pipe, and a filter screen is provided at the filter port.

7. The multi-stage water film dust removal tower according to claim 1, characterized in that, The filler layer is a Pall ring, Raschig ring, or multifaceted hollow sphere.

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