Oxalyl chloride rectification column waste heat recovery device

Abstract

This utility model discloses a waste heat recovery device for an oxalyl chloride distillation column, relating to the field of waste heat recovery technology. The utility model includes a heat exchange tank; the heat exchange tank is frustoconical in shape, and a water storage tank is fixedly connected inside the heat exchange tank. The water storage tank and the heat exchange tank have the same inverted cone inclination angle. An annular slide rail is fixedly connected to the bottom surface of the heat exchange tank, and a turntable is rotatably connected to the surface of the heat exchange tank. Several sets of extension plates are symmetrically hinged to the bottom surface of the turntable. Several sliding rods are symmetrically slidably connected inside the extension plates. Stops are fixedly connected to the periphery of the sliding rods, and springs are provided between the stop blocks and the extension plates. Moving plates are fixedly connected between the sliding rods in the same group, and brush bristles are provided on the moving plates. In use, by pulling the handle back and forth, multiple sets of brush bristles can be driven to repeatedly scrape away impurities on the outer surface of the water storage tank, preventing impurities on the steam from contaminating the outer surface of the water storage tank during waste heat recovery, thus avoiding impact on waste heat recovery efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of waste heat recovery technology, and in particular relates to a waste heat recovery device for an oxalyl chloride distillation tower. Background Technology

[0002] During the distillation of oxalyl chloride, a large amount of steam is generated. In existing technology, this steam is passed through a serpentine tube inside a water tank. The hot steam heats the tube wall as it passes through, and the serpentine tube then heats the water in the tank, thus achieving heat recovery. However, because the gas introduced into the serpentine tube is not pure, a large amount of impurities accumulates on the inner wall of the tube after long-term use, affecting heat exchange efficiency and reducing waste heat recovery effectiveness. Therefore, we provide a waste heat recovery device for oxalyl chloride distillation columns to solve the aforementioned problems. Utility Model Content

[0003] The purpose of this invention is to provide a waste heat recovery device for an oxalyl chloride distillation tower. By reciprocatingly rotating the brush bristles to scrape away impurities on the outer surface of the water storage tank, the waste heat recovery efficiency can be avoided by the presence of impurities on the surface of the water storage tank.

[0004] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0005] This utility model relates to a waste heat recovery device for an oxalyl chloride distillation column, comprising a heat exchange tank; the heat exchange tank is frustoconical, and a water storage tank is fixedly connected inside the heat exchange tank. The water storage tank and the heat exchange tank have the same inverted cone inclination angle. An annular slide rail is fixedly connected to the bottom surface of the heat exchange tank. A turntable is rotatably connected to the surface of the heat exchange tank. Several sets of extension plates are symmetrically hinged to the bottom surface of the turntable. Several slide rods are symmetrically slidably connected inside the extension plates. A stop block is fixedly connected to the periphery of the slide rod. A spring is provided between the stop block and the extension plate. A movable plate is fixedly connected between the slide rods in the same group. Brush bristles are provided on the movable plate.

[0006] The present invention is further configured such that a groove is provided inside the annular slide rail, and an arc-shaped slider that slides in cooperation with the groove is hinged to the bottom surface of each extension plate.

[0007] The present invention is further configured such that ventilation pipes are connected to both opposite sides of the heat exchange tank.

[0008] The present invention is further configured such that a water pipe connector is provided through the water storage tank, the end of the water pipe connector extends to the bottom of the water storage tank, and a connecting pipe is provided on the water pipe connector.

[0009] The present invention is further configured such that a connecting ring is threaded into the heat exchange tank, and a storage box is fixedly connected to the bottom surface of the connecting ring, wherein the inner diameter of the opening of the storage box is larger than the diameter of the upper surface of the water tank.

[0010] The present invention is further configured such that a straight rail is provided on the side of the heat exchange tank, a rack is slidably arranged on the straight rail, a toothed ring is fixedly connected to the turntable, the rack meshes with the toothed ring, and a handle is fixedly connected to both opposite sides of the rack.

[0011] This utility model has the following beneficial effects:

[0012] 1. When this utility model is in use, by reciprocatingly pulling the handle, the rack and toothed ring cooperate with each other, which can drive the bristles to scrape away the complex substances on the outer surface of the water storage tank, thus avoiding the adhesion of impurities in the steam to the surface of the water storage tank and affecting the heat exchange efficiency.

[0013] 2. When in use, the spring constantly pushes the baffle, which ensures that the bristles remain in close contact with the outer wall of the water tank, thereby further improving the efficiency of scraping off impurities.

[0014] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a waste heat recovery device for an oxalyl chloride distillation column.

[0016] Figure 2 This is a schematic cross-sectional view of the heat exchange tank of this utility model.

[0017] Figure 3 for Figure 2 Enlarged view of part A in the image.

[0018] The attached diagram lists the components represented by each number as follows:

[0019] 1. Heat exchange tank; 2. Water storage tank; 3. Circular slide rail; 4. Turntable; 5. Extension plate; 6. Slide rod; 7. Stop block; 8. Moving plate; 9. Brush bristles; 10. Spring; 11. Slide groove; 12. Arc-shaped slider; 13. Ventilation pipe; 14. Water pipe joint; 15. Connecting pipe; 16. Sealing gasket; 17. Connecting ring; 18. Storage box; 19. Straight rail; 20. Rack; 21. Gear ring; 22. Handle. Detailed Implementation

[0020] 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 skilled in the art without creative effort are within the protection scope of the present utility model. Specific Implementation Example 1

[0022] Please see Figure 1-3 This utility model relates to a waste heat recovery device for an oxalyl chloride distillation column, comprising a heat exchange tank 1; the heat exchange tank 1 is frustoconical, and a water storage tank 2 is fixedly connected inside the heat exchange tank 1. The water storage tank 2 and the heat exchange tank 1 have the same inverted cone inclination angle. An annular slide rail 3 is fixedly connected to the bottom surface of the heat exchange tank 1. A turntable 4 is rotatably connected to the surface of the heat exchange tank 1. Several sets of extension plates 5 are symmetrically hinged to the bottom surface of the turntable 4. Several sliding rods 6 are symmetrically slidably connected inside the extension plates 5. Stop blocks 7 are fixedly connected to the sides of the sliding rods 6. A spring 10 is provided between the extension plate 5 and the sliding rod 6 in the same group. A movable plate 8 is fixedly connected between the sliding rods 6 in the same group. A brush bristle 9 is provided on the movable plate 8. A groove 11 is provided in the annular slide rail 3. An arc-shaped slider 12 that slides with the groove 11 is hinged to the bottom surface of each extension plate 5. A ventilation pipe 13 is provided on both opposite sides of the heat exchange tank 1. A water pipe joint 14 is provided through the water tank 2. The end of the water pipe joint 14 extends to the bottom of the water tank 2. A connecting pipe 15 is provided on the water pipe joint 14.

[0023] The operation process of this embodiment is as follows: the steam output end of the distillation column is connected to a ventilation pipe 13, and another ventilation pipe 13 is connected to the exhaust section. After the hot steam enters the heat exchange tank 1, the water to be heated is input into the water storage tank 2 by a water pump. During the process of the steam passing through the heat exchange tank 1, the internal heat heats the water in the water storage tank 2, completing the heat exchange process. After a long period of waste heat recovery, a large number of impurities will adhere to the outer surface of the water storage tank 2, thereby affecting the heat exchange efficiency. By rotating the turntable 4, the turntable 4 drives all the extension plates 5 to rotate around the tank body of the water storage tank 2. The two are tilted at the same angle. The spring 10 always pushes the baffle to drive the bristles 9 to press against the outer surface of the water storage tank 2. As the turntable 4 rotates, the bristles 9 scrape off the impurities on the outer surface of the water storage tank 2, which can prevent the impurities from affecting the waste heat recovery efficiency. When the water in the water storage tank 2 is fully heated, the hot water is extracted by the water pump through the connecting pipe 15 and the water pipe joint 14, and then cold water is added to resume waste heat recovery. Specific Implementation Example 2

[0025] Please see Figure 1-3 Based on the first specific embodiment, the heat exchange tank 1 is internally threaded with a connecting ring 17, and a storage box 18 is fixedly connected to the bottom surface of the connecting ring 17. The inner diameter of the opening of the storage box 18 is larger than the diameter of the upper surface of the water storage tank 2. A straight rail 19 is provided on the side of the heat exchange tank 1, and a rack 20 is slidably provided on the straight rail 19. A toothed ring 21 is fixedly connected to the turntable 4. The rack 20 and the toothed ring 21 mesh with each other. A handle 22 is fixedly connected to both opposite sides of the rack 20. Sealing gaskets 16 are provided at the connection points between the turntable 4 and the heat exchange tank 1 and the water pipe joint 14.

[0026] The operation process of this embodiment is as follows: by reciprocatingly pulling the handle 22, the handle 22 drives the rack 20 to move back and forth, and the rack 20 pulls the toothed ring 21 to rotate back and forth, which enables the bristles 9 to scrape the outer surface of the water tank 2 back and forth, improving the applicability of the device. The water tank 2 is shaped like an inverted frustum, so the scraped dust will not accumulate and will fall directly into the storage box 18. When it is necessary to remove the dust, simply rotate the connecting ring 17 to unscrew the storage box 18, further improving the practicality of the device.

[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A waste heat recovery device for an oxalyl chloride distillation column, comprising a heat exchange tank (1); characterized in that: The heat exchange tank (1) is frustum-shaped. A water storage tank (2) is fixedly connected inside the heat exchange tank (1). The water storage tank (2) and the heat exchange tank (1) have the same inverted cone inclination angle. An annular slide rail (3) is fixedly connected to the bottom surface of the heat exchange tank (1). A turntable (4) is rotatably connected to the surface of the heat exchange tank (1). Several sets of extension plates (5) are symmetrically hinged to the bottom surface of the turntable (4). Several slide rods (6) are symmetrically slidably connected inside the extension plates (5). A stop block (7) is fixedly connected to the periphery of the slide rod (6). A spring (10) is provided between the stop block (7) and the extension plate (5). A moving plate (8) is fixedly connected between the slide rods (6) in the same group. Brush bristles (9) are provided on the moving plate (8).

2. The waste heat recovery device for an oxalyl chloride distillation column according to claim 1, characterized in that, The annular slide rail (3) has a groove (11) inside, and each extension plate (5) has an arc-shaped slider (12) hinged to the bottom surface of the groove (11) for sliding cooperation.

3. The waste heat recovery device for an oxalyl chloride distillation column according to claim 1, characterized in that, The heat exchange tank (1) has ventilation pipes (13) connected to both opposite sides.

4. The waste heat recovery device for an oxalyl chloride distillation column according to claim 1, characterized in that, A water pipe connector (14) is provided through the water storage tank (2), the end of the water pipe connector (14) extends to the bottom of the water storage tank (2), and a connecting pipe (15) is provided on the water pipe connector (14).

5. The waste heat recovery device for an oxalyl chloride distillation column according to claim 1, characterized in that, The heat exchange tank (1) is internally threaded with a connecting ring (17), and a storage box (18) is fixedly connected to the bottom surface of the connecting ring (17). The inner diameter of the opening of the storage box (18) is larger than the diameter of the upper surface of the water storage tank (2).

6. The waste heat recovery device for an oxalyl chloride distillation column according to claim 1, characterized in that, The heat exchange tank (1) is provided with a straight rail (19) on its side. A rack (20) is slidably provided on the straight rail (19). A toothed ring (21) is fixedly connected to the turntable (4). The rack (20) meshes with the toothed ring (21). A handle (22) is fixedly connected to both opposite sides of the rack (20).

7. The waste heat recovery device for an oxalyl chloride distillation column according to claim 1, characterized in that, The turntable (4) is provided with sealing gaskets (16) at the connection points with the heat exchange tank (1) and the water pipe joint (14).

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