High-dust-content flue gas air cooler

Abstract

The utility model discloses a high-dust-content flue gas air cooler which comprises a heat exchanger body. A smoke inlet is formed in the top of the heat exchanger body, an ash hopper is arranged at the bottom of the heat exchanger body, and a dust collecting box is arranged at the bottom of the ash hopper. A first heat exchange box is arranged in the heat exchanger body, a frame is arranged on the outer side of the heat exchanger body, and a connecting pipe is arranged above the frame. According to the structural design, equipment can be effectively prevented from shaking or displacing in the operation process, normal operation of the equipment is ensured, the equipment is convenient to mount, dismount, maintain and overhaul due to the arrangement of the frame, the top cover is arranged at the top of the heat exchange box, and when the internal structure of the heat exchange box needs to be checked, maintained or cleaned, the heat exchange box can be conveniently replaced. The cooling pipe is arranged in the gap between the inner plate and the outer plate, the cooling pipe is convenient to check and replace due to the structure, and once the cooling pipe goes wrong, the cooling pipe can be maintained in time, and the overall operation of the equipment is not influenced.

Description

Technical Field

[0001] This utility model belongs to the technical field of flue gas cooling equipment, specifically relating to a high dust content flue gas air cooler. Background Technology

[0002] Industrial production generates large amounts of dust-laden flue gas. This flue gas needs to be cooled before it can be discharged or further treated. The dust content of the flue gas is 10–20 g / Nm³. 3 When the temperature is between 500℃ and 600℃, the flue gas temperature is reduced to below 200℃ to facilitate subsequent dust removal.

[0003] However, existing flue gas cooling equipment has poor cooling effect. For cooling high-dust and high-temperature flue gas, conventional corrugated plate heat exchangers and bare tube heat exchangers are expensive, prone to clogging, and difficult to maintain. Utility Model Content

[0004] The purpose of this utility model is to provide a high-dust-content flue gas air cooler to solve the problems mentioned in the background art, such as poor cooling effect of existing flue gas cooling equipment, high cost of conventional corrugated plate heat exchangers and bare tube heat exchangers for cooling high-dust-content and high-temperature flue gas, easy blockage and difficult maintenance.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-dust-content flue gas air cooler, comprising a heat exchanger body;

[0006] A flue gas inlet is provided at the top of the heat exchanger body, an ash hopper is provided at the bottom of the heat exchanger body, and a dust collection box is provided at the bottom of the ash hopper.

[0007] A first heat exchange box is provided inside the heat exchanger body, a frame is provided outside the heat exchanger body, and a connecting pipe is provided above the frame.

[0008] Preferably, a flue gas passage is provided inside the first heat exchange box, an inner plate is provided outside the flue gas passage, an outer plate is provided outside the inner plate, and a cooling pipe is provided in the gap between the outer plate and the inner plate.

[0009] Preferably, the cooling pipe is connected to the connecting pipe, the top connecting pipe is connected to the water inlet pipe, and the bottom connecting pipe is connected to the water outlet pipe.

[0010] Preferably, the frame array consists of three parts, the heat exchanger body is fixedly connected by the frame, and a top cover is provided at the top of the first heat exchange box.

[0011] Preferably, a second heat exchange box is provided on the right side of the first heat exchange box, a third heat exchange box is provided on the rear side of the second heat exchange box, and a fourth heat exchange box is provided on the left side of the third heat exchange box.

[0012] Preferably, a first conversion box is provided at the bottom of the heat exchange box. The first heat exchange box is connected to the second heat exchange box and the first conversion box below the third heat exchange box and the fourth heat exchange box through a connection port. The second heat exchange box, the third heat exchange box and the fourth heat exchange box are connected to the second conversion box above the first heat exchange box through a connection port.

[0013] Preferably, the heat exchange box is inspected and maintained through the top cover, the inner plate is a smooth flat plate, and the inner plate material is 12Cr1MoV high temperature resistant low carbon steel.

[0014] Compared with the prior art, this utility model provides a high-dust-content flue gas air cooler, which has the following features:

[0015] Beneficial effects:

[0016] 1. Through the arrangement of heat exchange boxes, frames, connecting pipes, flue gas passages, inner plates, outer plates, cooling pipes, inlet pipes, outlet pipes, and a top cover, cooling pipes are installed in the gap between the inner and outer plates and connected to the connecting pipes. The top connects to the inlet pipe, and the bottom connects to the outlet pipe, forming a highly efficient cooling circulation system. Cooling water can continuously flow in the cooling pipes, fully exchanging heat with the high-dust-laden flue gas in the flue gas passage, greatly improving heat exchange efficiency. A dedicated flue gas passage is set inside the first heat exchange box, making the flue gas flow more concentrated and smooth, further enhancing the heat exchange effect. Three frames are arranged in the array for heat exchange... The heat exchanger body provides stable support and fixation. This structural design effectively prevents the equipment from shaking or shifting during operation, ensuring normal operation. The frame also facilitates the installation and disassembly of the equipment, making maintenance and repair easier. A top cover is installed on the top of the heat exchanger box. When it is necessary to inspect, repair, or clean the internal structure of the heat exchanger box, simply open the top cover. The operation is convenient and quick, greatly reducing maintenance costs. The cooling pipes are installed in the gap between the inner and outer plates. This structure facilitates the inspection and replacement of the cooling pipes. If there is a problem with the cooling pipes, they can be repaired in time without affecting the overall operation of the equipment.

[0017] 2. By setting up multiple heat exchange boxes—the first, second, third, and fourth heat exchange boxes, the first conversion box, the second heat exchange box, and connecting ports—the contact area between the flue gas and the cooling medium is increased. This allows the high-dust-laden flue gas to undergo multiple heat exchanges in different heat exchange boxes, significantly improving heat exchange efficiency. The connecting ports connect the various heat exchange boxes, enabling smooth flow of the flue gas between them, extending the residence time of the flue gas in the heat exchange area, fully utilizing the heat exchange space, and further enhancing the heat exchange effect. The reasonable layout and connection method of the heat exchange boxes allow the flue gas to flow at a relatively uniform speed in each heat exchange box, avoiding situations where the local flow velocity is too fast or too slow, reducing flow resistance, and improving system stability. The first and second conversion boxes are set at the top and bottom respectively, and the connecting ports connect the heat exchange boxes, guiding the flue gas to flow along a specific path, ensuring that the flue gas can fully contact the cooling pipes for efficient cooling. The design of multiple heat exchange boxes makes the equipment more adaptable to handling high-dust-laden flue gas with different flow rates and temperatures. The operating status of each heat exchanger can be adjusted according to actual needs to meet the cooling requirements under different working conditions. If a heat exchanger malfunctions or needs maintenance, the other heat exchangers can continue to work without causing the entire equipment to shut down completely, thus improving the reliability and continuous operation capability of the equipment. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a structural schematic diagram of the heat exchange box in this utility model.

[0020] Figure 3 This is a schematic diagram of the structure of the first conversion box in this utility model.

[0021] Figure 4 This is a schematic diagram of the structure of the second conversion box in this utility model.

[0022] Figure 5 This is a schematic diagram of the flue gas passage in this utility model.

[0023] Figure 6 This is a schematic diagram of the cooling pipe structure in this utility model.

[0024] Figure 7 This is a schematic diagram of the structure of the outer plate in this utility model.

[0025] Figure 8 This is a schematic diagram of the inner plate in this utility model.

[0026] In the diagram: 1. Heat exchanger body; 2. Water inlet pipe; 3. Flue gas inlet; 4. Top cover; 5. First heat exchange box; 6. Connecting pipe; 7. Frame; 8. Ash hopper; 9. Dust collection box; 10. Water outlet pipe; 11. Second heat exchange box; 12. Third heat exchange box; 13. Fourth heat exchange box; 14. First conversion box; 15. Connection port; 16. Second conversion box; 17. Cooling pipe; 18. Outer panel; 19. Inner panel; 20. Flue gas passage. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] This utility model provides, for example Figure 1-8 The high-dust-content flue gas air cooler shown includes a heat exchanger body 1;

[0029] A flue gas inlet 3 is provided at the top of the heat exchanger body 1, and an ash hopper 8 is provided at the bottom of the heat exchanger body 1. A dust collection box 9 is provided at the bottom of the ash hopper 8.

[0030] A first heat exchange box 5 is provided inside the heat exchanger body 1, a frame 7 is provided outside the heat exchanger body 1, and a connecting pipe 6 is provided above the frame 7.

[0031] A flue gas passage 20 is provided inside the first heat exchange box 5. An inner plate 19 is provided outside the flue gas passage 20. An outer plate 18 is provided outside the inner plate 19. A cooling pipe 17 is provided in the gap between the outer plate 18 and the inner plate 19.

[0032] Cooling pipe 17 is connected to connecting pipe 6. The top connecting pipe 6 is connected to water inlet pipe 2, and the bottom connecting pipe 6 is connected to water outlet pipe 10.

[0033] The frame 7 array consists of three units, and the heat exchanger body 1 is fixedly connected through the frame 7. The top cover 4 is provided at the top of the first heat exchange box 5.

[0034] A second heat exchange box 11 is located on the right side of the first heat exchange box 5, a third heat exchange box 12 is located behind the second heat exchange box 11, and a fourth heat exchange box 13 is located on the left side of the third heat exchange box 12.

[0035] A first conversion box 14 is provided at the bottom of the heat exchange box 5. The first conversion box 14 below the second heat exchange box 11, the third heat exchange box 12, and the fourth heat exchange box 13 is connected to the first conversion box 14 below the first heat exchange box 5 through a connection port 15. The second heat exchange box 11, the third heat exchange box 12, and the fourth heat exchange box 13 are connected to the second conversion box 16 above the first heat exchange box 5 through a connection port 15.

[0036] The heat exchange box is inspected and maintained through the top cover 4. The inner plate 19 is a smooth flat plate, and the material of the inner plate 19 is 12Cr1MoV high temperature and low carbon steel.

[0037] In this embodiment, a specific implementation step of a high-dust-content flue gas air cooler is as follows: the high-dust-content flue gas enters the heat exchanger body from the flue gas inlet 3, and flows sequentially through the first heat exchange box 5, the second heat exchange box 11, the third heat exchange box 12, and the fourth heat exchange box 14. Inside the heat exchange boxes, the flue gas exchanges heat with the cooling water in the cooling pipe 17 and is discharged from the heat exchanger body 1 after being cooled. The cooling water in the cooling pipe 17 enters from the water inlet pipe 2, flows through the connecting pipe 6 into the cooling pipe 17 in each heat exchange box, absorbs the heat of the flue gas, and is discharged from the water outlet pipe 10. The dust in the flue gas falls into the ash hopper 8 under the action of gravity and is finally collected in the dust collection box 9. When the equipment needs to be inspected and maintained, the top cover 4 can be opened to inspect and repair the heat exchange boxes.

[0038] like Figure 1-2 and Figure 5-8 As shown, a first heat exchange box 5 is provided inside the heat exchanger body 1, a frame 7 is provided outside the heat exchanger body 1, a connecting pipe 6 is provided above the frame 7, a flue gas passage 20 is provided inside the first heat exchange box 5, an inner plate 19 is provided outside the flue gas passage 20, an outer plate 18 is provided outside the inner plate 19, a cooling pipe 17 is provided in the gap between the outer plate 18 and the inner plate 19, the cooling pipe 17 is connected to the connecting pipe 6, a water inlet pipe 2 is connected to the top connecting pipe 6, a water outlet pipe 10 is connected to the bottom connecting pipe 6, three frames 7 are arranged in an array, the heat exchanger body 1 is fixedly connected by the frames 7, and a top cover 4 is provided at the top of the first heat exchange box 5.

[0039] Preferably, a cooling pipe 17 is installed in the gap between the inner plate 19 and the outer plate 20, and the cooling pipe 17 is connected to the connecting pipe 6. The top is connected to the water inlet pipe 2 and the bottom is connected to the water outlet pipe 10, forming a highly efficient cooling circulation system. The cooling water can continuously flow in the cooling pipe 17 and fully exchange heat with the high dust content flue gas in the flue gas passage 20, which greatly improves the heat exchange efficiency. The first heat exchange box 5 is equipped with a dedicated flue gas passage, which makes the flue gas flow more concentrated and smooth, further enhancing the heat exchange effect. Three frames 7 are arranged in an array to provide stable support and fixation for the heat exchanger body 1. This structural design effectively prevents the equipment from shaking or shifting during operation, ensuring its normal operation. The frame 7 also facilitates the installation and disassembly of the equipment, making maintenance and repair easier. The top cover 4 is installed on the top of the heat exchange box. When it is necessary to inspect, repair or clean the internal structure of the heat exchange box, simply open the top cover 4. The operation is convenient and quick, greatly reducing maintenance costs. The cooling pipe 17 is set in the gap between the inner plate 19 and the outer plate 18. This structure facilitates the inspection and replacement of the cooling pipe. If there is a problem with the cooling pipe 17, it can be repaired in time without affecting the overall operation of the equipment.

[0040] like Figure 1 and Figure 3-4 As shown, a second heat exchange box 11 is located on the right side of the first heat exchange box 5, a third heat exchange box 12 is located behind the second heat exchange box 11, a fourth heat exchange box 13 is located on the left side of the third heat exchange box 12, and a first conversion box 14 is located at the bottom of the heat exchange boxes. The first heat exchange box 5 is connected to the second heat exchange box 11, the third heat exchange box 12, and the first conversion box 14 below the fourth heat exchange box 13 via a connection port 15. The second heat exchange box 11, the third heat exchange box 12, and the fourth heat exchange box 13 are connected to the second conversion box 16 above the first heat exchange box 5 via a connection port 15.

[0041] Preferably, multiple heat exchange boxes are provided, which increases the contact area between the flue gas and the cooling medium, allowing the high-dust-content flue gas to undergo multiple heat exchanges in different heat exchange boxes, significantly improving heat exchange efficiency. The heat exchange boxes are connected through the connection port 15, allowing the flue gas to flow smoothly between multiple heat exchange boxes, extending the residence time of the flue gas in the heat exchange area, making full use of the heat exchange space, and further enhancing the heat exchange effect. The reasonable layout and connection method of the heat exchange boxes allow the flue gas to flow in each heat exchange box at a relatively uniform speed, avoiding situations where the local flow velocity is too fast or too slow, reducing flow resistance, and improving the stability of the system. The first conversion box 14 and the second conversion box 16 are respectively set at the top and bottom, and the connection port 15 realizes the connection between the heat exchange boxes, which can guide the flue gas to flow along a specific path, ensuring that the flue gas can fully contact the cooling pipes and achieve efficient cooling. The design of multiple heat exchange boxes makes the equipment more adaptable to handling high-dust-content flue gas with different flow rates and temperatures. The operating status of each heat exchanger can be adjusted according to actual needs to meet the cooling requirements under different working conditions. If a heat exchanger malfunctions or needs maintenance, the other heat exchangers can continue to work without causing the entire equipment to shut down completely, thus improving the reliability and continuous operation capability of the equipment.

[0042] like Figure 1-8 As shown, the heat exchange box is inspected and maintained through the top cover 4. The inner plate 19 is a smooth flat plate, and the material of the inner plate 19 is 12Cr1MoV high temperature resistant low carbon steel.

[0043] Optionally, the heat exchange box can be inspected and maintained through the top cover 4. When the equipment needs maintenance, there is no need to disassemble the entire equipment on a large scale. Simply open the top cover to inspect and repair the inside of the first heat exchange box, which greatly saves maintenance time and costs. This design makes it easier for maintenance personnel to access the parts that need maintenance, improving maintenance efficiency and accuracy. The inner plate 19 is a smooth flat plate. This design can effectively reduce the adhesion and accumulation of dust inside the heat exchange box. When high dust-laden flue gas passes through the heat exchange box, dust is less likely to stay on the inner plate, reducing the risk of the heat exchange box being blocked. The smooth surface of the inner plate makes it easier for dust to fall under the action of gravity. With the subsequent dust collection device, it can better keep the inside of the heat exchange box clean and ensure the stability of heat exchange efficiency. The inner plate 19 is made of 12Cr1MoV high temperature resistant low carbon steel. This material has good high temperature resistance and can withstand the high temperature environment brought by high dust-laden flue gas, ensuring stable operation of the equipment under high temperature conditions. The use of high temperature resistant materials can extend the service life of the inner plate, reduce material deformation and damage caused by high temperature, and improve the reliability and durability of the equipment.

[0044] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high dust-containing flue gas air cooler, comprising a heat exchanger body (1); The flue gas inlet (3) is arranged at the top of the heat exchanger body (1), the ash hopper (8) is arranged at the bottom of the heat exchanger body (1), and the dust collection box (9) is arranged at the bottom of the ash hopper (8); characterized in that The first heat exchange box (5) is arranged inside the heat exchanger body (1), the frame (7) is arranged outside the heat exchanger body (1), and the connecting pipe (6) is arranged above the frame (7).

2. A high dust laden flue gas air cooler as claimed in claim 1, wherein: The flue gas passage (20) is arranged inside the first heat exchange box (5), the inner plate (19) is arranged outside the flue gas passage (20), the outer plate (18) is arranged outside the inner plate (19), and the cooling pipe (17) is arranged in the gap between the outer plate (18) and the inner plate (19).

3. A high dust laden flue gas air cooler as claimed in claim 2, wherein: The cooling pipe (17) is connected with the connecting pipe (6), the water inlet pipe (2) is connected with the top of the connecting pipe (6), and the water outlet pipe (10) is connected with the bottom of the connecting pipe (6).

4. A high dust laden flue gas air cooler as claimed in claim 3, wherein: The frame (7) is arranged in an array of three, the heat exchanger body (1) is fixedly connected through the frame (7), and the top cover (4) is arranged at the top of the first heat exchange box (5).

5. A high dust laden flue gas air cooler as claimed in claim 4, wherein: The second heat exchange box (11) is arranged at the right side of the first heat exchange box (5), the third heat exchange box (12) is arranged at the back side of the second heat exchange box (11), and the fourth heat exchange box (13) is arranged at the left side of the third heat exchange box (12).

6. A high dust laden flue gas air cooler as claimed in claim 5 wherein: The first conversion box (14) is arranged at the bottom of the heat exchange box, the first conversion box (14) is communicated with the second heat exchange box (11), the third heat exchange box (12), the fourth heat exchange box (13) and the first heat exchange box (5) below through the connecting port (15), and the second conversion box (16) is communicated with the second heat exchange box (11), the third heat exchange box (12), the fourth heat exchange box (13) and the first heat exchange box (5) above through the connecting port (15).

7. A high dust laden flue gas air cooler as claimed in claim 6, wherein: The heat exchange box is detected and maintained through the top cover (4), the inner plate (19) is a smooth plate, and the material of the inner plate (19) is 12Cr1MoV high-temperature-resistant low-carbon steel.

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