Desulfurizing tower waste heat recovery device with smoke abatement effect

Abstract

The utility model discloses a desulfurization tower waste heat recovery device with a smoke abatement effect, which relates to the technical field of desulfurization towers, and comprises a waste heat recovery tank, the outer surface of the waste heat recovery tank is fixedly sleeved with a support bracket, the top of the right side of the support bracket is fixedly provided with a smoke abatement box, and the left side of the top of the support bracket is fixedly provided with a filter box; a filter unit is arranged in the filter box, a smoke abatement unit is arranged in the smoke abatement box, the filter unit comprises a first filter screen plate movably inserted into the filter box, and a second filter screen plate is movably inserted into the filter box and located on the rear side of the first filter screen plate. Smoke is filtered out by arranging the first filter screen plate and the second filter screen plate, and the second filter screen plate is smaller in mesh relative to the first filter screen plate, so that the second filter screen plate and the first filter screen plate can filter impurities of different sizes, the impurities are prevented from entering the waste heat recovery tank to adhere to the heat exchange pipe, and the service life of the heat exchange pipe is prolonged. And the working efficiency is further improved.

Description

Technical Field

[0001] This utility model relates to the field of desulfurization tower technology, specifically to a waste heat recovery device for desulfurization towers with smoke elimination effect. Background Technology

[0002] A desulfurization tower is a tower-type device used to desulfurize industrial waste gas. When it is working, it emits a large amount of white smoke into the air, most of which is water vapor. Direct emission would result in heat waste, so waste heat recovery treatment is carried out.

[0003] In the prior art, a Chinese patent document with publication number CN215177100U and publication date of December 14, 2021, was proposed to solve the above-mentioned technical problems. The technical solution disclosed in the patent document is as follows: a waste heat recovery device for desulfurization tower with smoke elimination effect, including a shell and a box. The waste heat recovery steel pipe is installed in the shell by mounting bracket and bolts, and the outer periphery of the shell is installed by screws. The top of the support ring is installed by bolts to install a fixing bracket, and the bottom of the fixing bracket is installed by bearings and bolts to install fan blades. The bottom of the fan blades is installed by screws to install cleaning brushes.

[0004] To address the issue of waste heat recovery and smoke elimination in desulfurization towers, existing technologies employ fan blades, cleaning brushes, and filters. During operation, airflow drives the fan blades, causing them to rotate and in turn rotating the cleaning brushes. Since the bottom of the cleaning brushes contacts the filter screen, they effectively clean impurities from the top surface of the filter screen. However, since the smoke elimination device is located at the smoke outlet, impurities mixed in the flue gas adhere to the outer surface of the heat exchange tubes, which reduces the heat exchange efficiency of the tubes over time. Utility Model Content

[0005] The purpose of this invention is to provide a waste heat recovery device for desulfurization towers with smoke elimination effect, so as to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] A waste heat recovery device for a desulfurization tower with smoke elimination effect includes a waste heat recovery tank. A support bracket is fixedly sleeved on the outer surface of the waste heat recovery tank. A smoke elimination box is fixedly installed on the top right side of the support bracket, and a filter box is fixedly installed on the top left side of the support bracket.

[0008] The filter box is equipped with a filter unit, and the smoke elimination box is equipped with a smoke elimination unit.

[0009] The filter unit includes a filter screen plate 1 that is movably inserted into the filter box. A filter screen plate 2 is movably inserted into the filter box behind the filter screen plate 1. The mesh diameters of the two sets of screen plates are different, so they can filter impurities of different sizes.

[0010] A further improvement of this utility model is that: teeth are fixedly installed on the front sides of the first and second filter screens, and drive rods are rotatably installed inside the fixed arc plates on both sides of the front of the filter box. Rotating gears are fixedly sleeved on the outer surfaces of both sides of the drive rods, and the rotating gears are meshed with the teeth.

[0011] A further improvement of this utility model is that: a handle is fixedly connected to the front end of the drive rod, a smoke inlet is fixedly connected to the left side shell of the filter box, a diversion pipe is fixedly installed on the right side shell of the filter box, and the other end of the diversion pipe is fixedly installed inside the left side of the waste heat recovery tank. Rotating the handle facilitates driving the drive rod to rotate the two sets of rotating gears, which can generate a pushing force by interlocking the teeth, making it easy to push the two sets of screens upward and convenient to remove and clean them.

[0012] A further improvement of this utility model is that: a flue gas outlet is fixedly installed on the right side shell of the waste heat recovery tank, and the other end of the flue gas outlet is fixedly installed inside the left side shell of the smoke elimination box; a heat exchange medium inlet is fixedly connected to the bottom of the waste heat recovery tank; a heat exchange tube is fixedly installed on the other end of the heat exchange medium inlet; a heat exchange medium outlet is fixedly installed on the other end of the heat exchange tube; the heat exchange medium outlet is fixedly installed on the top of the waste heat recovery tank; and the heat exchange tube is arranged in a ring shape, which can extend the heat exchange path.

[0013] A further improvement of the present invention is that the smoke elimination unit includes a spray plate fixedly installed at the top of the inside of the smoke elimination box, and an exhaust port is fixedly installed on the right side shell of the smoke elimination box.

[0014] A further improvement of this utility model is that: a circulation pump is fixedly installed on the bottom left side of the smoke elimination box, a liquid extraction pipe is fixedly installed on the input end of the circulation pump, the other end of the liquid extraction pipe is fixedly installed inside the bottom left side of the smoke elimination box, a drain pipe is fixedly installed on the output end of the circulation pump, and the other end of the drain pipe is fixedly installed inside the left side of the spray plate. The model of the circulation pump is: UHB-Z.

[0015] A further improvement of this utility model is that: an installation groove is provided on the front side of the smoke elimination box, and a filter frame is movably inserted into the installation groove.

[0016] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0017] This utility model provides a waste heat recovery device for desulfurization towers with smoke elimination effect. By setting up a filter screen plate one and a filter screen plate two, the flue gas is filtered out. The mesh size of the filter screen plate two is smaller than that of the filter screen plate one. Therefore, the two can filter impurities of different sizes, thereby preventing impurities from entering the interior of the waste heat recovery tank and adhering to the heat exchange tubes, thereby improving the service life of the heat exchange tubes and further improving the working efficiency.

[0018] This utility model provides a waste heat recovery device for desulfurization towers with smoke elimination effect. By setting up a circulating pump and a liquid extraction pipe, the liquid at the bottom of the smoke elimination box is drawn outward, and then the liquid is transported to the inside of the spray plate by the drain pipe. The spray plate sprays the liquid downward to spray the flue gas, thereby achieving the purpose of smoke elimination. The sprayed liquid flows downward and is filtered by the filter frame before flowing back to the bottom of the smoke elimination box for reuse. The smoke-eliminating gas is discharged to the outside through the exhaust port, thus achieving the effect of smoke elimination. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the filter box structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the waste heat recovery tank structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the smoke elimination box structure of this utility model;

[0023] Figure 5 This is a schematic diagram of the filter frame structure of this utility model.

[0024] In the diagram: 1. Waste heat recovery tank; 11. Exhaust port; 12. Heat exchange medium inlet; 13. Heat exchange tube; 14. Heat exchange medium outlet; 2. Support bracket; 3. Filter box; 31. Smoke inlet; 32. Diverter pipe; 33. Filter screen plate one; 34. Filter screen plate two; 35. Tooth; 36. Drive rod; 37. Rotating gear; 38. Handle; 4. Smoke elimination box; 41. Exhaust port; 42. Spray plate; 43. Circulation pump; 44. Liquid extraction pipe; 45. Liquid discharge pipe; 46. Mounting slot; 47. Filter frame. Detailed Implementation

[0025] 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. Example

[0026] like Figure 1-5 As shown, this utility model provides a waste heat recovery device for a desulfurization tower with smoke elimination effect, including a waste heat recovery tank 1. A support bracket 2 is fixedly sleeved on the outer surface of the waste heat recovery tank 1. A smoke elimination box 4 is fixedly installed on the top right side of the support bracket 2. A filter box 3 is fixedly installed on the top left side of the support bracket 2. A filter unit is provided inside the filter box 3. A smoke elimination unit is provided inside the smoke elimination box 4. The filter unit includes a filter screen plate 33 that is movably inserted into the filter box 3. A filter screen plate is movably inserted into the filter box 3 behind the filter screen plate 33. 34. Toothed teeth 35 are fixedly installed on the front side of filter screen 33 and filter screen 34. Drive rods 36 are rotatably installed inside the fixed arc plates on both sides of the front of filter box 3. Rotating gears 37 are fixedly sleeved on both outer surfaces of drive rods 36. Rotating gears 37 mesh with toothed teeth 35. A handle 38 is fixedly connected to the front end of drive rod 36. A smoke inlet 31 is fixedly connected to the left side shell of filter box 3. A diversion pipe 32 is fixedly installed on the right side shell of filter box 3. The other end of diversion pipe 32 is fixedly installed inside the left side of waste heat recovery tank 1.

[0027] Furthermore, by connecting the flue gas inlet 31 to the output end of the desulfurization tower, the exhaust gas is introduced into the interior of the filter box 3, where it is filtered out by the filter screen 33 and the filter screen 34. The filter screen 34 has a smaller mesh size than the filter screen 33, so the two can filter impurities of different sizes, thereby preventing impurities from entering the interior of the waste heat recovery tank 1 and adhering to the heat exchange tube 13. Example

[0028] like Figure 1-5 As shown, based on Embodiment 1, this utility model provides a technical solution: Preferably, a flue gas outlet 11 is fixedly installed on the right side shell of the waste heat recovery tank 1, and the other end of the flue gas outlet 11 is fixedly installed inside the left side shell of the smoke elimination box 4. A heat exchange medium inlet 12 is fixedly connected to the bottom end of the waste heat recovery tank 1, a heat exchange tube 13 is fixedly installed on the other end of the heat exchange medium inlet 12, a heat exchange medium outlet 14 is fixedly installed on the other end of the heat exchange tube 13, and the heat exchange medium outlet 14 is fixedly installed on the top of the waste heat recovery tank 1.

[0029] Furthermore, the filtered flue gas enters the interior of the waste heat recovery tank 1 through the diversion pipe 32 to perform heat exchange treatment on the medium inside the heat exchange tube 13. Example

[0030] like Figure 1-5 As shown, based on embodiments 1-2, this utility model provides a technical solution: Preferably, the smoke elimination unit includes a spray plate 42 fixedly installed at the top of the inside of the smoke elimination box 4, an exhaust port 41 fixedly installed on the right side shell of the smoke elimination box 4, a circulation pump 43 fixedly installed on the bottom left side of the smoke elimination box 4, a liquid extraction pipe 44 fixedly installed on the input end of the circulation pump 43, the other end of the liquid extraction pipe 44 fixedly installed inside the bottom left side of the smoke elimination box 4, a drain pipe 45 fixedly installed on the output end of the circulation pump 43, the other end of the drain pipe 45 fixedly installed inside the left side of the spray plate 42, and an installation groove 46 is provided on the front side of the smoke elimination box 4, with a filter frame 47 movably inserted into the installation groove 46.

[0031] Furthermore, by starting the circulation pump 43, the liquid at the bottom of the smoke elimination box 4 is drawn outward by the liquid extraction pipe 44, and then transported to the inside of the spray plate 42 by the drain pipe 45. The spray plate 42 sprays the liquid downward to spray the flue gas, thereby achieving the purpose of smoke elimination. The sprayed liquid flows downward and is filtered by the filter frame 47 before flowing back to the bottom of the smoke elimination box 4 for reuse. The gas after smoke elimination is discharged to the outside through the exhaust port 41.

[0032] The solution uses a PLC as the core control component. The PLC establishes a connection with the circulating pump 43 through RS-485 communication. When the circulating pump 43 needs to be started, the PLC sends a start command to the circulating pump 43, causing the circulating pump 43 to start.

[0033] The working principle of the waste heat recovery device for the desulfurization tower with smoke elimination effect will be explained in detail below.

[0034] like Figure 1-5As shown, during use, the flue gas is connected to the output end of the desulfurization tower through the flue gas inlet 31, and the discharged flue gas is introduced into the interior of the filter box 3. It is then filtered by filter screen 33 and filter screen 34. The mesh size of filter screen 34 is smaller than that of filter screen 33, thus both can filter impurities of different sizes, thereby preventing impurities from entering the interior of the waste heat recovery tank 1 and adhering to the heat exchange tubes 13. The filtered flue gas then enters the interior of the waste heat recovery tank 1 through the diversion pipe 32, where it exchanges heat with the medium inside the heat exchange tubes 13. After heat exchange, the flue gas re-enters the smoke elimination chamber 4. Then, the circulation pump 43 is started, and the liquid at the bottom of the smoke elimination chamber 4 is drawn out by the liquid extraction pipe 44. The liquid is then transported to the inside of the spray plate 42 by the drain pipe 45. The spray plate 42 sprays the liquid downward to spray the flue gas, thereby eliminating the smoke. The sprayed liquid flows downward and is filtered by the filter frame 47 before flowing back to the bottom of the smoke elimination chamber 4 for reuse. The smoke-eliminating gas is discharged to the outside through the exhaust port 41.

[0035] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A desulfurization tower waste heat recovery device with smoke elimination effect, comprising a waste heat recovery tank (1), characterized in that: A support bracket (2) is fixedly sleeved on the outer surface of the waste heat recovery tank (1). A smoke elimination box (4) is fixedly installed on the top right side of the support bracket (2). A filter box (3) is fixedly installed on the top left side of the support bracket (2). The filter box (3) is equipped with a filter unit inside, and the smoke elimination box (4) is equipped with a smoke elimination unit inside; The filter unit includes a filter screen plate one (33) that is movably inserted into the filter box (3), and a filter screen plate two (34) that is movably inserted into the filter box (3) behind the filter screen plate one (33).

2. The desulphurization tower waste heat recovery device with smoke elimination effect according to claim 1, characterized in that: The filter screen plate 1 (33) and filter screen plate 2 (34) are fixedly mounted with teeth (35) on the front side. The filter box (3) is fixedly mounted with drive rods (36) inside the arc plates on both sides. Rotating gears (37) are fixedly sleeved on both outer surfaces of the drive rods (36). The rotating gears (37) mesh with the teeth (35).

3. The device according to claim 2, characterized in that: A handle (38) is fixedly connected to the front end of the drive rod (36), a smoke inlet (31) is fixedly connected to the left side shell of the filter box (3), a diversion pipe (32) is fixedly installed on the right side shell of the filter box (3), and the other end of the diversion pipe (32) is fixedly installed inside the left side of the waste heat recovery tank (1).

4. The desulphurization tower waste heat recovery device with smoke elimination effect according to claim 1, characterized in that: A flue gas outlet (11) is fixedly installed on the right side shell of the waste heat recovery tank (1). The other end of the flue gas outlet (11) is fixedly installed inside the left side shell of the smoke elimination box (4). A heat exchange medium inlet (12) is fixedly connected to the bottom end of the waste heat recovery tank (1). A heat exchange tube (13) is fixedly installed on the other end of the heat exchange medium inlet (12). A heat exchange medium outlet (14) is fixedly installed on the other end of the heat exchange tube (13). The heat exchange medium outlet (14) is fixedly installed on the top of the waste heat recovery tank (1).

5. The device according to claim 1, characterized in that: The smoke elimination unit includes a spray plate (42) fixedly installed at the top of the inside of the smoke elimination box (4), and an exhaust port (41) is fixedly installed on the right side shell of the smoke elimination box (4).

6. The waste heat recovery device for desulfurizing tower with smoke elimination effect according to claim 5, characterized in that: A circulation pump (43) is fixedly installed on the bottom left side of the smoke elimination box (4). A liquid extraction pipe (44) is fixedly installed on the input end of the circulation pump (43). The other end of the liquid extraction pipe (44) is fixedly installed inside the bottom left side of the smoke elimination box (4). A drain pipe (45) is fixedly installed on the output end of the circulation pump (43). The other end of the drain pipe (45) is fixedly installed inside the left side of the spray plate (42).

7. The waste heat recovery device for desulfurizing tower with smoke elimination effect according to claim 6, characterized in that: The front side of the smoke-eliminating box (4) is provided with an installation groove (46), and a filter frame (47) is movably inserted into the installation groove (46).

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