A flue gas dedusting and purifying tower

Abstract

The utility model discloses a flue gas dust removal purification tower belongs to flue gas purification equipment technical field, including purification tower body, water collecting tower and water circulation mechanism, the lateral wall of purification tower body is fixedly connected with the inlet pipe, is horizontally provided with the spray pipe in the purification tower body, is installed on the spray pipe and has the shower nozzle, is equipped with the support frame below the spray pipe in the purification tower body, is fixedly installed with the gas guide cover on the support frame, and the gas guide cover is the hollow conical structure, and the tip of gas guide cover is located at the top and is located the outlet of inlet pipe directly above, is set up with a plurality of through -hole on the lateral wall of gas guide cover, and the water collecting tower upper end opening and with the inner chamber of purification tower body intercommunication, and the water circulation mechanism is connected between the spray pipe and water collecting tower. The utility model discloses a flue gas dust removal purification tower makes the flue gas fully spread in the purification tower body, thereby guaranteeing the water mist of falling can fully contact with the rising flue gas, improves the dust removal efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of flue gas purification equipment, and in particular, designs a flue gas dust removal and purification tower. Background Technology

[0002] Flue gas dust removal is an indispensable environmental protection measure in industrial production. Besides complying with environmental regulations, it also serves to protect human health, prevent secondary pollution, and facilitate resource recycling. The purpose of flue gas dust removal is to remove solid particles from emitted flue gas, and it is usually the first stage of flue gas purification. Flue gas dust removal methods include electrostatic precipitators, bag filters, wet scrubbers, and hybrid electrostatic-bag filters. The centralized dust removal methods listed above all require electrostatic capture of dust, resulting in high initial investment costs and maintenance frequency, making widespread adoption difficult. Therefore, the most commonly used method is water spray dust removal. This method works by contacting water or other liquids with the dust-laden flue gas, using the liquid to capture dust particles, thus achieving dust removal. Its core mechanisms include physical processes such as inertial collision, interception, and agglomeration. Currently, in water spray dust removal, dust-laden flue gas is introduced into the purification tower from the bottom. Then, nozzles installed at the top of the tower are opened, allowing falling water mist to contact the rising dust-laden gas, thus capturing the dust. The captured dust then settles with the liquid droplets into a water tank at the bottom of the tower, completing the dust removal process. However, currently, the dust-laden flue gas entering the tower from the bottom does not completely fill the tower's interior space. This means that while the dust in the space above the flue gas outlet can have sufficient contact with the water mist, the edges of the tower have less dust-laden gas, preventing the water mist from fully capturing dust. Therefore, the dust removal efficiency needs improvement. Utility Model Content

[0003] The technical problem to be solved by this utility model is: in order to overcome the above-mentioned defects in the prior art, a flue gas dust removal and purification tower with good dust removal effect is provided.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a flue gas dust removal and purification tower, including a purification tower body, a water collection tower and a water circulation mechanism. A flue gas inlet pipe is fixedly connected to the side wall of the purification tower body. A spray pipe is horizontally arranged inside the purification tower body. A spray nozzle is installed on the spray pipe. A support frame is provided inside the purification tower body below the spray pipe. An air guide hood is fixedly installed on the support frame. The air guide hood has a hollow conical structure. The tip of the air guide hood is located at the top and directly above the flue gas outlet of the flue gas inlet pipe. Multiple through holes are opened on the side wall of the air guide hood. The upper end of the water collection tower is open and communicates with the inner cavity of the purification tower body. The water circulation mechanism is connected between the spray pipe and the water collection tower.

[0005] Furthermore, the diameter of the through holes on the air guide cover gradually decreases from the edge to the center.

[0006] Furthermore, the purification tower body includes a cylinder and a hemispherical shell, with both ends of the cylinder being open, and the hemispherical shell being detachably fixedly connected to the top of the cylinder.

[0007] Furthermore, the cylinder and the hemispherical shell are fixedly connected by a clamping structure, which includes two mutually clamping semicircular rings that form a complete circle after clamping. The ends of the two semicircular rings are engaged with each other and connected by bolts and nuts.

[0008] Furthermore, the spray pipes are multiple and installed inside the cylinder, the multiple spray pipes are parallel to each other, the ends of the multiple spray pipes are connected to a main pipe, each spray pipe is connected to the main pipe, and each spray pipe is connected to multiple nozzles.

[0009] Furthermore, a ash collection tray is slidably inserted into the side wall of the water collection tower along the horizontal direction, the upper end of the ash collection tray is open, and the bottom of the ash collection tray is set as a filter screen.

[0010] Furthermore, a slot is provided on the side wall of the water collection tower, and the ash receiving tray can be slidably inserted into the slot.

[0011] Furthermore, a return water inlet is provided on the side wall at the bottom of the water collection tower, and filter cotton is installed on the side wall of the water collection tower at the return water inlet.

[0012] Furthermore, the water circulation mechanism includes a water collection pipe, a water tank, and a return water pipe. Both the water collection pipe and the return water pipe are connected to the water tank. One end of the water collection pipe is connected to the return water inlet, and one end of the return water pipe extends into the cylinder and is connected to the main pipe. A first water pump is installed on the water collection pipe, and a second water pump is installed on the return water pipe.

[0013] The beneficial effects of this utility model are as follows: The flue gas dust removal and purification tower of this utility model, by setting a conical air guide hood, realizes the diffusion of dust-containing flue gas inside the purification tower. During the diffusion process, some flue gas flows upward from the through hole, and some flue gas overflows from the edge of the air guide hood, so that the flue gas can fully diffuse inside the purification tower, thereby ensuring that the falling water mist can fully contact the rising flue gas and improve the dust removal efficiency. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] Figure 1 This is a three-dimensional view of the flue gas dust removal and purification tower of this utility model;

[0016] Figure 2 yes Figure 1 The top view of the flue gas dust removal and purification tower shown;

[0017] Figure 3 This is a cross-sectional view of the flue gas dust removal and purification tower shown in the figure along line AA.

[0018] In the diagram: 10. Purification tower body; 11. Smoke inlet pipe; 101. Cylindrical tube; 102. Hemispherical shell; 12. Smoke outlet pipe; 103. Semicircular ring; 13. Spray pipe; 14. Main pipe; 15. Spray head; 16. Support frame; 17. Air guide hood; 171. Through hole; 20. Water collection tower; 21. Ash receiving tray; 22. Filter screen; 201. Slot; 202. Water return port; 203. Filter cotton; 30. Water circulation mechanism; 31. Water collection pipe; 32. Water tank; 33. Water return pipe. Detailed Implementation

[0019] The present invention will now be described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0020] Please see Figures 1-3 This utility model provides a flue gas dust removal and purification tower, including a purification tower body 10, a water collection tower 20, and a water circulation mechanism 30. The purification tower body 10 is installed on top of the water collection tower 20, and the liquid circulation mechanism 30 is installed between the purification tower 10 and the water collection tower 20. In use, the purification tower body 10 is used to purify flue gas, the water collection tower 20 is used to collect the captured dust and recover the liquid used to purify the dust, and the water circulation mechanism 30 is used to filter the liquid collected in the water collection tower 20 and return it to the purification tower body 10, so as to realize the recycling of the liquid required for purification.

[0021] The purification tower body 10 has a hollow structure with an opening at the bottom. A smoke inlet pipe 11 is fixedly inserted into the side wall at the bottom of the purification tower body 10. The smoke inlet pipe 11 is bent, and its outlet is located at the center of the purification tower body 10. The outlet of the smoke inlet pipe 11 is arranged along the central axis of the purification tower body 10. During operation, dust-laden flue gas enters the smoke inlet pipe 11 through the outlet located outside the purification tower body 10 and finally enters vertically to the center of the purification tower body 10.

[0022] In this embodiment, the purification tower body 10 includes a cylindrical shell 101 extending through both ends and a hemispherical shell 102 connected to the top of the cylindrical shell 101. The bottom of the hemispherical shell 102 is adapted to and detachably fixedly connected to the top of the cylindrical shell 101. A smoke outlet pipe 12 is connected to the center of the top of the hemispherical shell 102. In use, the flue gas purified by dust removal flows out from the smoke outlet pipe 12.

[0023] In a preferred embodiment, the cylinder 101 and the hemispherical shell 102 are fixedly connected by a clamping structure. Specifically, the clamping structure includes two interlocking semicircular rings 103, which together form a complete circular structure, thus securing the cylinder 101 and the hemispherical shell 102 at the joint. Furthermore, the ends of the two semicircular rings 103 are fitted together and fixedly connected by bolts and nuts.

[0024] Multiple spray pipes 13 are horizontally installed inside the cylinder 101, and the multiple spray pipes 13 are parallel to each other. The ends of the multiple spray pipes 13 are connected to a main pipe 14, and each spray pipe 13 is connected to the main pipe 14. The end of the spray pipe 13 away from the main pipe 14 is closed. Multiple nozzles 15 are installed on each spray pipe 13 along its length. In use, liquid for washing dust is injected into the main pipe 14, and then enters each spray pipe 13, and is then sprayed out as water mist from each nozzle 15. In this embodiment, the main pipe 14 has an arc structure, and the length of each spray pipe 13 is different to ensure that the spray pipes 13 can cover all positions in the horizontal plane of the cylinder 101, thereby increasing the spraying area.

[0025] In addition, a support frame 16 is fixedly connected to the inner wall of the cylinder 101 below the spray pipe 13. The support frame 16 is arranged radially along the cylinder 101. An air guide hood 17 is fixedly installed at the end of the support frame 16 away from the cylinder 101. The air guide hood 17 has a hollow conical structure. The tip of the air guide hood 17 is located at the top and is located directly above the smoke outlet of the smoke inlet pipe 11. At the same time, multiple through holes 171 are opened on the side wall of the air guide hood 17. During operation, the dust-laden flue gas flowing out of the flue gas outlet through the flue gas inlet pipe 11 flows upward and comes into contact with the air guide hood 17. Under the action of the conical structure of the air guide hood 17, the flue gas diffuses and flows in all directions along the lower surface of the air guide hood 17. During this process, some flue gas will pass upward through the through hole 171 and come into contact with the falling water mist, while another part of the flue gas will overflow from the bottom edge of the air guide hood 17. At this time, this part of the flue gas will come into contact with the falling water mist and the water flowing down through the upper surface of the air guide hood 17. In this way, under the action of the air guide hood 17, the flue gas entering the cylinder 101 will be guided to various positions inside the cylinder 101, thereby ensuring that the falling water mist can fully contact the rising flue gas and improve the dust removal efficiency.

[0026] In this embodiment, the diameter of the through holes 171 on the air guide hood 17 gradually decreases from the edge to the center. This is done because the flue gas velocity at the center of the air guide hood 17 is relatively high, and reducing the diameter of the through holes 171 reduces the amount of flue gas flowing through per unit time. Conversely, the flue gas velocity at locations further from the center of the air guide hood 17 is relatively low, and increasing the diameter of the through holes 171 increases the amount of flue gas flowing through per unit time. This ensures that the flue gas flow at the center and edges is relatively consistent, resulting in a reasonable layout and outstanding effect.

[0027] In this embodiment, there are multiple support frames 16, which are evenly arranged in the cylinder 101 along the circumference of the cylinder 101. The hollow mesh structure formed by the multiple support frames 16 ensures the reliability of the connection of the air guide hood 17, while not hindering the upward flow of flue gas and the downward flow of water mist.

[0028] In actual operation, the user can remove the clamp structure to inspect and replace the nozzle 15, and also clean and replace the air guide cover 17. The operation is simple and convenient.

[0029] The water collection tower 20 is roughly a box-shaped structure with an opening at the top. The inner cavity of the water collection tower 20 is connected to the space of the cylindrical 101. A dust collection tray 21 is slidably inserted into the side wall of the water collection tower 20 in the horizontal direction. The dust collection tray 21 has an opening at the top and a filter screen 22 at the bottom. During normal operation, the dust collection tray 21 is horizontally inserted into the water collection tower 20. Dust captured by the water spray settles downwards with the water spray and eventually falls into the dust collection tray 21. At this time, the dust is blocked on the filter screen 22, while the water spray flows downwards through the filter screen to the bottom of the water collection tower 20, thus achieving solid-liquid separation. The filtered liquid is sent into the main pipe 14 by the water circulation mechanism 30 for further dust removal and purification of the flue gas. When the user pulls the dust collection tray 21 out from one side of the water collection tower 20, the dust intercepted on the filter screen 22 can be cleaned.

[0030] In this embodiment, a slot 201 is provided on the side wall of the water collection tower 20, and the ash receiving tray 21 can be slidably inserted into the slot 201.

[0031] Furthermore, a return water inlet 202 is provided on the side wall at the bottom of the water collection tower 20, and a filter cotton 203 is installed on the side wall of the water collection tower 20 at the return water inlet 202. The filter cotton 203 can filter out the dust that passes through the filter screen 22 inside the water collection tower 20, so as to further filter the water and ensure the cleanliness of the circulating water.

[0032] The water circulation mechanism 30 includes a water collection pipe 31, a water tank 32, and a return water pipe 33. Both the water collection pipe 31 and the return water pipe 33 are connected to the water tank 32. One end of the water collection pipe 31 is connected to the return water inlet 202, and one end of the return water pipe 33 extends into the cylinder 101 and is connected to the main pipe 14. A first water pump is installed on the water collection pipe 31, and a second water pump is installed on the return water pipe 33. During operation, the first water pump pumps water from the bottom of the water collection tower 20 into the water tank 32, and the second water pump pumps water from the water tank 32 into the main pipe 14, which is then sprayed into the cylinder 101 through the nozzles 15.

[0033] The flue gas dust removal and purification tower of this utility model achieves the diffusion of dust-containing flue gas inside the purification tower body 10 by setting a conical air guide hood 17. During the diffusion process, some flue gas flows upward from the through hole 141, and some flue gas overflows from the edge of the air guide hood 17, so that the flue gas can fully diffuse inside the purification tower body 10, thereby ensuring that the falling water mist can fully contact the rising flue gas and improve the dust removal efficiency.

[0034] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the scope of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A flue gas dust removal and purification tower, characterized in that: The system includes a purification tower body, a water collection tower, and a water circulation mechanism. A smoke inlet pipe is fixedly connected to the side wall of the purification tower body. A spray pipe is horizontally installed inside the purification tower body, and nozzles are mounted on the spray pipe. A support frame is located below the spray pipe inside the purification tower body, and an air guide hood is fixedly installed on the support frame. The air guide hood has a hollow conical structure, with its tip located at the top and directly above the smoke outlet of the smoke inlet pipe. Multiple through holes are opened on the side wall of the air guide hood. The upper end of the water collection tower is open and communicates with the inner cavity of the purification tower body. The water circulation mechanism connects the spray pipe and the water collection tower.

2. The flue gas dust removal and purification tower as described in claim 1, characterized in that: The diameter of the through holes on the air guide cover gradually decreases from the edge to the center.

3. The flue gas dust removal and purification tower as described in claim 1, characterized in that: The purification tower body includes a cylinder and a hemispherical shell. The cylinder is open at both ends, and the hemispherical shell is detachably fixed to the top of the cylinder.

4. The flue gas dust removal and purification tower as described in claim 3, characterized in that: The cylinder and the hemispherical shell are fixedly connected by a clamping structure, which includes two interlocking semicircular rings that form a complete circle when they are joined together. The ends of the two semicircular rings are engaged with each other and connected by bolts and nuts.

5. The flue gas dust removal and purification tower as described in claim 3, characterized in that: The spray pipes are multiple and installed inside the cylinder. The multiple spray pipes are parallel to each other, and the ends of the multiple spray pipes are connected to a main pipe. Each spray pipe is connected to the main pipe, and each spray pipe is connected to multiple nozzles.

6. The flue gas dust removal and purification tower as described in claim 5, characterized in that: A ash collection tray is slidably inserted into the side wall of the water collection tower along the horizontal direction. The upper end of the ash collection tray is open, and the bottom of the ash collection tray is set as a filter screen.

7. The flue gas dust removal and purification tower as described in claim 6, characterized in that: The water collection tower has slots on its side walls, and the ash receiving tray can be slidably inserted into the slots.

8. The flue gas dust removal and purification tower as described in claim 6, characterized in that: A return water inlet is provided on the side wall at the bottom of the water collection tower, and filter cotton is installed on the side wall of the water collection tower at the return water inlet.

9. The flue gas dust removal and purification tower as described in claim 8, characterized in that: The water circulation mechanism includes a water collection pipe, a water tank, and a return water pipe. Both the water collection pipe and the return water pipe are connected to the water tank. One end of the water collection pipe is connected to the return water inlet, and one end of the return water pipe extends into the cylinder and is connected to the main pipe. A first water pump is installed on the water collection pipe, and a second water pump is installed on the return water pipe.

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