A desulfurization waste liquid waste heat recovery device facilitating impurity cleaning

Abstract

The utility model discloses a kind of desulfurization waste liquid waste heat recovery devices of convenient to clean impurity, it relates to desulfurization waste heat recovery technical field, including shell, a pair of inner walls of shell opposite is provided with a pair of limit ring, a pair of limit ring inboard is rotatably arranged with a pair of rotating plate, four fixed rods are arranged between a pair of rotating plate, four fixed rods are provided with four first arc-shaped plates between, the middle position of each first arc-shaped plate is provided with filter screen;The filter screen located in the uppermost of the utility model filters desulfurization waste liquid, makes impurity separate from desulfurization waste liquid, rotates filter screen by driving assembly, makes the filter screen to be cleaned rotate to the position of the lowermost, further clean impurity by cleaning assembly, so that each filter screen can be cleaned in time, and then improve the effect of filtration, ensure the normal operation of tubular heat exchanger.

Description

Technical Field

[0001] This utility model relates to the field of desulfurization waste heat recovery technology, specifically a desulfurization waste liquid waste heat recovery device that facilitates the removal of impurities. Background Technology

[0002] In industrial production processes, especially in fields involving desulfurization processes such as heating, desulfurization waste liquid carries a large amount of residual heat. The treatment of this residual heat is mostly done by direct discharge or simple cooling, which results in a waste of heat energy. Therefore, it is necessary to recover the heat from the desulfurization waste liquid.

[0003] The waste liquid generated during desulfurization may contain various impurities, such as unreacted desulfurizing agent particles, precipitates formed during the reaction, and dust in the flue gas. If these impurities accumulate during the waste heat recovery process, they will gradually clog heat exchange equipment, pipes, valves, and other components, affecting the normal operation of the system. For example, when the inner wall of the heat exchange tube is severely scaled, it will reduce the heat transfer efficiency, greatly reduce the waste heat recovery effect, and may even lead to local overheating and damage to the equipment. Traditional waste heat recovery devices are not good at filtering impurities from the desulfurization waste liquid, which will affect the normal operation and service life of the heat exchange device. Utility Model Content

[0004] To address the aforementioned shortcomings of existing technologies, this utility model provides a waste heat recovery device for desulfurization wastewater that facilitates the removal of impurities. The uppermost filter screen filters the desulfurization wastewater, allowing impurities to be removed from it. A drive component rotates the filter screen, moving it to the lowermost position. The cleaning component then further cleans the impurities, ensuring that each filter screen is cleaned promptly, thereby improving the filtration effect and ensuring the normal operation of the tubular heat exchanger.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a desulfurization waste liquid waste heat recovery device for easy cleaning of impurities, comprising a shell, a pair of limiting rings on opposite inner walls of the shell, a pair of rotating plates rotatably arranged inside the pair of limiting rings, four fixing rods between the pair of rotating plates, four first arc-shaped plates between the four fixing rods, a filter screen in the middle of each first arc-shaped plate, a through groove in the center of each rotating plate, a second arc-shaped plate on the inner wall of the shell located within the pair of through grooves, a liquid outlet pipe penetrating the inner wall of the shell corresponding to the position of the second arc-shaped plate, a tubular heat exchanger connected to one end of the liquid outlet pipe outside the shell, a driving assembly for driving the pair of rotating plates to rotate on the shell, an inlet assembly for conveying desulfurization waste liquid to the upper filter screen on the top of the shell, and a cleaning assembly for cleaning the lower filter screen on the shell.

[0006] Preferably, the drive assembly includes a servo motor, a gear, and an external gear ring. The servo motor is mounted on the outer wall of the housing, and the output shaft of the servo motor passes through the side wall of the housing and is connected to the gear. The external gear ring is mounted on a rotating plate near the servo motor and meshes with the gear.

[0007] Preferably, the liquid inlet assembly includes a first liquid inlet pipe, a second liquid inlet pipe, and multiple third liquid inlet pipes. The first liquid inlet pipe is disposed through the top wall of the housing, the second liquid inlet pipe is disposed horizontally and connected to the bottom of the first liquid inlet pipe, and the multiple third liquid inlet pipes are connected to the bottom of the second liquid inlet pipe.

[0008] Preferably, the cleaning component includes an air inlet pipe and an inclined plate. The air inlet pipe is located at the bottom of the second arc-shaped plate. One end of the air inlet pipe extends to the outside of the housing and is connected to a compressed air supply device. Multiple air outlets are provided at the bottom of the air inlet pipe. The inclined plate is located at the bottom of the inner cavity of the housing. A slag outlet is provided on the side wall of the housing, corresponding to the lower end of the inclined plate.

[0009] Preferably, a liquid guide plate is inclinedly provided on the inner side of the second arc-shaped plate, and the liquid outlet pipe is provided on the lower end side of the liquid guide plate.

[0010] This utility model provides a waste heat recovery device for desulfurization waste liquid that facilitates the removal of impurities, and has the following beneficial effects:

[0011] 1. The filter screen at the top of this utility model filters the desulfurization waste liquid, allowing impurities to be removed from the desulfurization waste liquid. The filter screen is rotated by the drive component, so that the filter screen to be cleaned is rotated to the bottom position. Then, the cleaning component further cleans the impurities, so that each filter screen can be cleaned in time, thereby improving the filtration effect and ensuring the normal operation of the tubular heat exchanger.

[0012] 2. When cleaning the bottom filter screen, the present invention supplies compressed air into the air inlet pipe through an external compressed air supply device. The compressed air is sprayed from multiple air outlets onto the bottom filter screen, causing the impurities on it to fall onto the inclined plate. The impurities on the inclined plate are then discharged from the slag outlet. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the internal structure of the present invention;

[0014] Figure 2 This utility model Figure 1 A cross-sectional view along the AA direction.

[0015] In the diagram: 1. Shell; 1-1. Slag outlet; 2. First liquid inlet pipe; 3. Second liquid inlet pipe; 4. Third liquid inlet pipe; 5. Limiting ring; 6. Rotating plate; 6-1. Through groove; 7. Servo motor; 8. Gear; 9. External gear ring; 10. Fixing rod; 11. First arc-shaped plate; 12. Filter screen; 13. Second arc-shaped plate; 14. Liquid guide plate; 15. Liquid outlet pipe; 16. Tubular heat exchanger; 17. Air inlet pipe; 18. Air outlet; 19. Inclined plate. Detailed Implementation

[0016] 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.

[0017] like Figure 1-2As shown, a waste heat recovery device for desulfurization wastewater that facilitates the removal of impurities includes a shell 1. A pair of limiting rings 5 ​​are arranged on opposite inner walls of the shell 1. A pair of rotating plates 6 are rotatably arranged inside the pair of limiting rings 5. Four fixing rods 10 are arranged between the pair of rotating plates 6. Four first arc-shaped plates 11 are arranged between the four fixing rods 10. A filter screen 12 is arranged in the middle of each first arc-shaped plate 11. A through groove 6-1 is formed at the center of each rotating plate 6. The inner wall of the shell 1 is located within one of the through grooves 6-1. A second arc-shaped plate 13 is provided, and a liquid outlet pipe 15 is provided through the inner wall of the housing 1 at a position corresponding to the second arc-shaped plate 13. One end of the liquid outlet pipe 15 located outside the housing 1 is connected to a tubular heat exchanger 16. A drive assembly for driving a pair of rotating plates 6 is provided on the housing 1. An inlet assembly for conveying desulfurization waste liquid to the upper filter screen 12 is provided at the top of the housing 1. A cleaning assembly for cleaning the lower filter screen 12 is provided on the housing 1. The drive assembly includes a servo motor 7, a gear 8, and an external gear ring 9. The servo motor 7 is mounted on the outer wall of the housing 1. The output shaft of the servo motor 7 passes through the side wall of the housing 1 and is connected to the gear 8. The external gear ring 9 is mounted on the rotating plate 6 near the servo motor 7, and the external gear ring 9 meshes with the gear 8. The liquid inlet assembly includes a first liquid inlet pipe 2, a second liquid inlet pipe 3, and multiple third liquid inlet pipes 4. The first liquid inlet pipe 2 passes through the top wall of the housing 1. The second liquid inlet pipe 3 is horizontally arranged and connected to the bottom of the first liquid inlet pipe 2. The multiple third liquid inlet pipes 4 are connected to the bottom of the second liquid inlet pipe 3. The cleaning assembly includes an air inlet pipe 17 and an inclined plate 19. The air inlet pipe 17 is located at the bottom of the second arc-shaped plate 13. One end of the air inlet pipe 17 extends to the outside of the housing 1 and is connected to a compressed air supply device. The bottom of the air inlet pipe 17 is provided with multiple air outlets 18. The inclined plate 19 is located at the bottom of the inner cavity of the housing 1. A slag outlet 1-1 is provided on the side wall of the housing 1 and corresponding to the lower end of the inclined plate 19. A liquid guide plate 14 is inclinedly arranged on the inner side of the second arc-shaped plate 13, and the liquid outlet pipe 15 is located on the lower end of the liquid guide plate 14.

[0018] Its detailed connection methods are well-known technologies in this field. The following mainly introduces the working principle and process, as follows:

[0019] In this utility model, the servo motor 7 is connected to an external electrical control system via wires. The above equipment and connection method are existing technologies and will not be described in detail here.

[0020] According to the instruction manual Figure 1-2 It can be seen that the four filter screens 12 of this utility model are in such a position as Figure 2As shown (two filter screens 12 on the top and bottom, and two other filter screens 12 on the left and right), each first arc-shaped plate 11 bends towards the center of the rotating plate 6, conveying desulfurization waste liquid to the uppermost filter screen 12 through the liquid inlet assembly. The uppermost filter screen 12 filters the desulfurization waste liquid, causing impurities to remain on it. The filtered desulfurization waste liquid flows downwards to the second arc-shaped plate 13, then flows into the liquid outlet pipe 15, and finally into the tubular heat exchanger 16, where it exchanges heat with the cooling medium (usually, a circulating pump circulates water within the tubular heat exchanger 16). When the uppermost filter screen 12 needs cleaning after a period of filtration, the drive assembly rotates a pair of rotating plates 6, thereby rotating the four filter screens. The filter screen 12 rotates, and a new filter screen 12 can be replaced every 90 degrees of rotation of a pair of rotating plates 6. When the filter screen 12 rotates, most of the impurities on it fall downwards to the bottom of the inner cavity of the housing 1. When the filter screen 12 to be cleaned is rotated to the bottom position, the cleaning component cleans the bottom filter screen 12, and then other residual impurities on the filter screen 12 fall downwards. The filter screen 12 at the top of this utility model filters the desulfurization waste liquid, so that the impurities are removed from the desulfurization waste liquid. The filter screen 12 is driven to rotate by the drive component, so that the filter screen 12 to be cleaned is rotated to the bottom position, and then the impurities are further cleaned by the cleaning component, so that each filter screen 12 can be cleaned in time, thereby improving the filtration effect and ensuring the normal operation of the tubular heat exchanger 16.

[0021] One possible implementation is that when the output shaft of the servo motor 7 rotates, it drives the connected gear 8 to rotate. The gear 8 drives the meshing external gear ring 9 to rotate. The external gear ring 9 drives the connected turntable to rotate. The turntable drives the four fixed rods 10 to rotate. The four fixed rods 10 drive another turntable to rotate. When the four fixed rods 10 rotate, they drive the four first arc-shaped plates 11 to rotate. When the four first arc-shaped plates 11 rotate, they drive the four filter screens 12 to rotate, thereby realizing that the servo motor 7 drives the filter screens 12 to rotate.

[0022] One possible implementation is that when desulfurization waste liquid is supplied into the housing 1, it is supplied to the second inlet pipe 3 through the first inlet pipe 2, and the desulfurization waste liquid in the second inlet pipe 3 is supplied to the filter screen 12 located at the top through multiple third inlet pipes 4.

[0023] One possible implementation is that when cleaning the bottommost filter screen 12, compressed air is supplied to the air inlet pipe 17 through an external compressed air supply device. The compressed air is sprayed from multiple air outlets 18 onto the bottommost filter screen 12, causing the impurities on it to fall onto the inclined plate 19. The impurities on the inclined plate 19 are then discharged from the slag outlet 1-1.

[0024] One possible implementation is that a liquid guide plate 14 is inclinedly provided on the inner side of the second arc plate 13, and the liquid guide plate 14 guides the filtered desulfurization slurry into the liquid outlet pipe 15.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A waste heat recovery device for desulfurization wastewater that facilitates the removal of impurities, comprising a shell (1), characterized in that, A pair of limiting rings (5) are provided on opposite inner walls of the housing (1). A pair of rotating plates (6) are rotatably provided inside the pair of limiting rings (5). Four fixing rods (10) are provided between the pair of rotating plates (6). Four first arc-shaped plates (11) are provided between the four fixing rods (10). A filter screen (12) is provided in the middle of each first arc-shaped plate (11). A through groove (6-1) is opened in the center of each rotating plate (6). The inner wall of the housing (1) is located in a pair of through grooves (6-1). A second arc-shaped plate (13) is provided, and an outlet pipe (15) is provided through the inner wall of the shell (1) corresponding to the position of the second arc-shaped plate (13). One end of the outlet pipe (15) located outside the shell (1) is connected to a tubular heat exchanger (16). A drive assembly for driving a pair of rotating plates (6) to rotate is provided on the shell (1). An inlet assembly for conveying desulfurization waste liquid to the upper filter screen (12) is provided on the top of the shell (1). A cleaning assembly for cleaning the lower filter screen (12) is provided on the shell (1).

2. The desulfurization wastewater waste heat recovery device for easy cleaning of impurities according to claim 1, characterized in that, The drive assembly includes a servo motor (7), a gear (8), and an external gear ring (9). The servo motor (7) is mounted on the outer wall of the housing (1). The output shaft of the servo motor (7) passes through the side wall of the housing (1) and is connected to the gear (8). The external gear ring (9) is mounted on a rotating plate (6) near the servo motor (7). The external gear ring (9) meshes with the gear (8).

3. The desulfurization wastewater waste heat recovery device for easy cleaning of impurities according to claim 1, characterized in that, The liquid inlet assembly includes a first liquid inlet pipe (2), a second liquid inlet pipe (3), and multiple third liquid inlet pipes (4). The first liquid inlet pipe (2) is disposed through the top wall of the housing (1). The second liquid inlet pipe (3) is disposed horizontally and connected to the bottom of the first liquid inlet pipe (2). The multiple third liquid inlet pipes (4) are connected to the bottom of the second liquid inlet pipe (3).

4. The waste heat recovery device for desulfurization wastewater that facilitates the removal of impurities according to claim 1, characterized in that, The cleaning assembly includes an air inlet pipe (17) and an inclined plate (19). The air inlet pipe (17) is located at the bottom of the second arc plate (13). One end of the air inlet pipe (17) extends to the outside of the housing (1) and is connected to a compressed air supply device. The bottom of the air inlet pipe (17) is provided with multiple air outlets (18). The inclined plate (19) is located at the bottom of the inner cavity of the housing (1). The side wall of the housing (1) and the lower end of the inclined plate (19) are provided with a slag outlet (1-1).

5. The desulfurization wastewater waste heat recovery device for easy cleaning of impurities according to claim 1, characterized in that, A liquid guide plate (14) is inclinedly arranged on the inner side of the second arc-shaped plate (13), and the liquid outlet pipe (15) is arranged on the lower end side of the liquid guide plate (14).

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