Gypsum acid tail gas waste heat cascade recovery device

Abstract

The utility model relates to industrial waste gas waste heat recovery technical field discloses a kind of gypsum acid tail gas waste heat cascade recovery device, including support, the top of the support is provided with connecting pipe, the inner wall of connecting pipe is detachably connected with filter tube, multiple through slots are arranged in the inside of filter tube, the inner wall of filter tube is fixedly connected with activated carbon, the inner wall of filter tube is fixedly connected with filter screen, the outside of filter tube is fixedly connected with multiple connecting blocks, two sliding grooves are arranged in the inside of filter tube, the inside sliding connection of sliding groove has L ring, the inner wall of L ring is fixedly connected with multiple link blocks. In the utility model, it can effectively adsorb tail gas odor and filter impurities, reduce the pollution and loss of subsequent waste heat grading cylinder and other components, while achieving rapid installation and disassembly, greatly shorten the maintenance time, improve the operation and maintenance efficiency of device.

Description

Technical Field

[0001] This utility model relates to the field of industrial waste gas waste heat recovery technology, and in particular to a cascade recovery device for waste heat from gypsum acid production tail gas. Background Technology

[0002] The tail gas from gypsum-based sulfuric acid production is the gas emitted during the reaction of gypsum with a reducing agent to produce sulfuric acid. Its main components include unreacted sulfur dioxide, nitrogen, water vapor, and a small amount of dust. If it is emitted directly without treatment, it will cause air pollution. It must be discharged after purification processes to meet standards.

[0003] The waste heat recovery device for gypsum acid production tail gas is used to recover heat from different temperature ranges in the tail gas of gypsum acid production in stages. Through multi-stage heat exchange units, heat is recovered in sequence from high to low tail gas temperature and converted into different forms of energy (such as steam and hot water). This device can improve the utilization rate of waste heat, realize the cascade utilization of energy and reduce energy consumption.

[0004] In existing technologies, the filter components of existing devices mostly adopt a fixed structure, which is connected to the pipeline by fasteners such as bolts. When it is necessary to replace or clean the filter material, multiple fasteners need to be disassembled with tools, which is cumbersome and time-consuming. This results in long downtime for device maintenance, affecting the overall operating efficiency. The filtration effect of some filter components is not good, and it is difficult to effectively remove odors and impurities from the exhaust gas, making it difficult to provide a clean gas environment for subsequent waste heat recovery. Therefore, a waste heat recovery device for gypsum acid production exhaust gas is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a cascade recovery device for waste heat from gypsum acid production tail gas, aiming to improve the problem of low maintenance efficiency of filtration devices in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A cascade recovery device for waste heat from gypsum acid production tail gas includes a support frame. A connecting pipe is mounted on the top of the support frame. A filter pipe is detachably connected to the inner wall of the connecting pipe. Multiple through-grooves are formed inside the filter pipe. Activated carbon and a filter screen are fixedly connected to the inner wall of the filter pipe. Multiple connecting blocks are fixedly connected to the outside of the filter pipe. Two sliding grooves are formed inside the filter pipe. An L-ring is slidably connected inside the sliding grooves. Multiple connecting blocks are fixedly connected to the inner wall of the L-ring. Limiting posts are fixedly connected to the far sides of the multiple connecting blocks, and springs are fixedly connected to the near sides of the multiple connecting blocks. A lever is fixedly connected to the top of the L-ring. An adjustment component for temperature regulation is fixedly connected to the top of the connecting pipe.

[0008] As a further description of the above technical solution:

[0009] The adjustment assembly includes a connecting tube, a fixed box is fixedly connected to the outside of the connecting tube, a motor is fixedly connected to the top of the fixed box, a driven platform is fixedly connected to the drive end of the motor, and a driven rod is rotatably connected to the bottom of the driven platform.

[0010] As a further description of the above technical solution:

[0011] The driven rod is rotatably connected to a linkage rod on its left side, the linkage rod is rotatably connected to a connecting rod on its left side, a fixing net is fixedly connected to the inner wall of the connecting tube, and an adjusting net is rotatably connected to the inside of the connecting tube.

[0012] As a further description of the above technical solution:

[0013] The outer side of the connecting block is in contact with the inner wall of the through groove, and the inner wall of the connecting block is in contact with the outer side of the limiting post.

[0014] As a further description of the above technical solution:

[0015] The right side of one of the springs is fixedly connected to the right inner wall of one of the slides, and a waste heat classification cylinder is fixedly connected to the inner wall of the bracket;

[0016] As a further description of the above technical solution:

[0017] A low-temperature waste heat cylinder is fixedly connected to the inner wall of the support, an energy storage cylinder is fixedly connected to the inner wall of the support, a collection box is provided on the right side of the support, and an energy exchange device is provided on the right side of the collection box.

[0018] As a further description of the above technical solution:

[0019] The external part of the linkage rod is slidably connected to the inside of the connecting tube, and the left side of the connecting rod is rotatably connected to the bottom of the adjusting net;

[0020] As a further description of the above technical solution:

[0021] A control console is provided on the right side of the energy exchange device, and the bottom of the connecting pipe is fixedly connected to the top of the connecting pipe.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, the connecting block is inserted into the through groove, and then the lever is moved to make the L-ring slide along the slide groove. The connecting block compresses the spring, and the limiting post retracts synchronously. After the connecting tube is rotated to make the connecting block lock into the slot on the inner wall of the connecting tube, the spring elastically resets and pushes the limiting post into the connecting block. This achieves effective adsorption of exhaust gas odor and filtration of impurities, reducing pollution and wear on subsequent components such as the waste heat classification cylinder. At the same time, it achieves quick installation and disassembly, greatly shortens maintenance time, and improves the operation and maintenance efficiency of the device.

[0024] 2. In this utility model, the driven platform is rotated by a motor, which in turn drives the driven rod to make a circular motion. The connecting rod is pushed and pulled by the linkage rod, which causes the regulating mesh to rotate in the connecting pipe. This achieves precise regulation of gas flow, stabilizes the temperature of the tail gas entering the waste heat classification cylinder, ensures that the heat exchange efficiency of the high temperature section and the medium temperature section remains stable, and reduces energy loss caused by temperature fluctuations. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of a waste heat recovery device for gypsum acid production tail gas according to the present invention.

[0026] Figure 2 This is a schematic diagram of the filter tube structure of a cascade recovery device for waste heat from gypsum acid production tail gas proposed in this utility model.

[0027] Figure 3 This is a schematic diagram of the connecting pipe of a cascade recovery device for waste heat from gypsum acid production tail gas proposed in this utility model.

[0028] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0029] Figure 5 This is a schematic diagram of the connecting pipe of a cascade recovery device for waste heat from gypsum-based acid production tail gas, as proposed in this utility model.

[0030] Legend:

[0031] 1. Support; 2. Connecting pipe; 3. Filter pipe; 4. Through groove; 5. Activated carbon; 6. Filter screen; 7. Connecting block; 8. Slide groove; 9. L-ring; 10. Connecting block; 11. Limiting post; 12. Spring; 13. Toggle block; 14. Connecting pipe; 15. Fixing box; 16. Motor; 17. Driven platform; 18. Driven rod; 19. Linkage rod; 20. Connecting rod; 21. Fixing net; 22. Adjusting net; 23. Waste heat classification cylinder; 24. Low temperature waste heat cylinder; 25. Energy storage cylinder; 26. Collection box; 27. Energy exchange device; 28. Control console. Detailed Implementation

[0032] 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.

[0033] Reference Figures 1 to 3 This utility model provides an embodiment of a waste heat recovery device for gypsum acid production tail gas, including a support 1. The support 1 provides support for the internal device and the upper connecting pipe 2. The top of the support 1 is provided with the connecting pipe 2, which is mainly used for conveying gypsum acid production tail gas. The inner wall of the connecting pipe 2 is detachably connected to a filter pipe 3, which provides installation space for the internal filter components. The filter pipe 3 has multiple through grooves 4 inside, which can be used for the passage of connecting blocks 7, so that the filter pipe 3 can smoothly enter the interior of the connecting pipe 2 through the connecting blocks 7, in preparation for subsequent splicing. Activated carbon 5 is fixedly connected to the inner wall of the filter pipe 3, which can adsorb the odor of gypsum acid production tail gas. Filter screen 6 is fixedly connected to the inner wall of the filter pipe 3, which mainly filters out small impurities in the gas to prevent unnecessary damage to the internal components of the subsequent device. Multiple connecting blocks 7 are fixedly connected to the outside of the filter pipe 3, so that the filter pipe 3 can be smoothly inserted into the interior of the connecting pipe 2 through the connecting blocks 7.

[0034] Reference Figure 3 and Figure 4 The filter tube 3 has two sliding grooves 8 inside, which provide limiting and guiding functions for the L-ring 9. The L-ring 9 is slidably connected inside the sliding groove 8. The L-ring 9 can receive the force from the lever 13, which in turn can drive the spring 12 to move. Multiple connecting blocks 10 are fixedly connected to the inner wall of the L-ring 9. The connecting blocks 10 provide fixing and support for the limiting post 11, and can receive the force from the L-ring 9 to drive the limiting post 11 to move synchronously. The limiting post 11 is fixedly connected to the far side of the multiple connecting blocks 10. When the limiting post 11 moves under the force from the connecting blocks 10, it rotates the filter tube 3 and drives the connecting blocks. 7 rotates synchronously inside the through groove 4, thereby releasing the force applied to the L ring 9, causing its connecting block 10 to be elastically reset by the spring 12, pushing the limiting post 11 into the interior of the connecting block 7 to complete the splicing and fixing, and at the same time driving the L ring 9 and the lever block 13 to reset. Multiple connecting blocks 10 are respectively fixedly connected to the adjacent side of the spring 12, which has an elastic function and provides elastic support for its connecting block 10. The top of the L ring 9 is fixedly connected to the lever block 13, and the operator can move the L ring 9 by moving the lever block 13. The top of the connecting pipe 2 is fixedly connected to an adjustment component for easy temperature adjustment.

[0035] Reference Figure 1 and Figure 5 The adjustment assembly includes a connecting pipe 14, which provides fixation and support for the fixed box 15 and is also used to connect to the external device's pipe for discharging gypsum acid production tail gas. The fixed box 15 is fixedly connected to the outside of the connecting pipe 14. The fixed box 15 provides fixation and support for the motor 16. The motor 16 is fixedly connected to the top of the fixed box 15. The motor 16 is the power source for the adjustment assembly. The drive end of the motor 16 is fixedly connected to a driven platform 17. The driven platform 17 can receive the force from the motor 16 to rotate. The bottom of the driven platform 17 is rotatably connected to a driven rod 18. The driven rod 18 can receive the force from the driven platform 17 to make a circular motion. The left side of the driven rod 18 is rotatably connected to a linkage rod 19. The linkage rod 19 can receive the force from the driven rod 18 to move synchronously.

[0036] A connecting rod 20 is rotatably connected to the left side of the linkage rod 19. The connecting rod 20 can receive the force from the linkage rod 19 and move synchronously. A fixed mesh 21 is fixedly connected to the inner wall of the connecting pipe 14. The fixed mesh 21 and the regulating mesh 22 have holes of the same size for gas passage. The regulating mesh 22 is rotatably connected inside the connecting pipe 14. The regulating mesh 22 can receive the force from the linkage rod 19 and rotate, thereby overlapping with the hole inside the fixed mesh 21, thereby regulating the gas flow and reducing the impact of temperature fluctuations on the cascade heat exchange.

[0037] Reference Figure 2 , Figure 3 and Figure 5 The outer side of the connecting block 7 contacts the inner wall of the through groove 4, allowing the connecting block 7 to enter the interior of the filter tube 3 through the through groove 4. The inner wall of the connecting block 7 contacts the outer side of the limiting post 11, allowing the limiting post 11 to engage with the interior of the connecting block 7, thus completing the connection and limiting fixation. The right side of one of the springs 12 is fixedly connected to the right inner wall of one of the slide grooves 8, which provides fixation and support for the spring 12. The inner wall of the bracket 1 is fixedly connected to a waste heat classification cylinder 23, with an outer heat insulation layer and two internally distributed along the axial direction. Each stage has an independent heat exchange chamber, corresponding to the high-temperature section and the medium-temperature section for waste heat recovery. The inner wall of the support 1 is fixedly connected to a low-temperature waste heat cylinder 24. The low-temperature waste heat cylinder 24 is equipped with a spiral wound heat pipe heat exchanger. The outer wall of the heat pipe is densely covered with heat dissipation fins to increase the heat exchange area. Its inlet is connected to the low-temperature section outlet of the waste heat classification cylinder 23 through a pipe. The inner wall of the support 1 is fixedly connected to an energy storage cylinder 25. The energy storage cylinder 25 is used to store the heat recovered in the high-temperature section. It can temporarily store the heat recovered in the medium and low-temperature sections and transport it to external heat-using equipment through pipes.

[0038] A collection box 26 is provided on the right side of the bracket 1. The collection box 26 is specifically used to collect the dust and condensate remaining in the exhaust gas after multi-stage waste heat recovery. An energy exchange device 27 is provided on the right side of the collection box 26. The energy exchange device 27 is responsible for exchanging the heat recovered in the high-temperature section with the external steam generator to generate high-pressure steam. The external part of the linkage rod 19 is slidably connected to the inside of the connecting pipe 14. The connecting pipe 14 provides a limiting and guiding function for the linkage rod 19. The left side of the connecting rod 20 is rotatably connected to the bottom of the regulating net 22. The connecting rod 20 can receive the force from the linkage rod 19 and thus drive the regulating net 22 to rotate, thereby adjusting the folding degree of the aperture. A control console 28 is provided on the right side of the energy exchange device 27. The bottom of the connecting pipe 14 is fixedly connected to the top of the connecting pipe 2. The connecting pipe 2 provides a fixing and support function for the connecting pipe 14.

[0039] Working principle: When installing the filter assembly, insert the filter tube 3 by aligning the connecting block 7 on the outside of the filter tube 3 with the through groove 4 of the connecting tube 2. Then, move the lever 13 to make the L-ring 9 slide along the slide groove 8. The connecting block 10 compresses the spring 12, and the limiting post 11 retracts simultaneously. Rotate the filter tube 3 to make the connecting block 7 engage with the groove on the inner wall of the connecting tube 2. Then, release the lever 13. The spring 12 elastically resets and pushes the limiting post 11 into the connecting block 7, thus fixing the filter tube 3. The activated carbon 5 inside the filter tube 3 adsorbs the odor of the exhaust gas, and the filter screen 6 filters out tiny impurities. When disassembling, move the lever 13 in the opposite direction to pull out the filter tube 3 for replacement. The operation is convenient.

[0040] When the flow rate of the regulating gas needs to be adjusted, the driven platform 17 is rotated by the motor 16, which in turn drives the driven rod 18 to make a circular motion. The connecting rod 20 is pushed and pulled by the linkage rod 19, causing the regulating mesh 22 to rotate in the connecting pipe 14. The overlap of the apertures of the regulating mesh 22 and the fixed mesh 21 changes with the rotation, thereby controlling the flow rate of the exhaust gas, stabilizing the temperature of the exhaust gas entering the waste heat classification cylinder 23, reducing the impact of fluctuations on the heat exchange of the high-temperature and medium-temperature sections, and realizing the cascade waste heat recovery in conjunction with the waste heat classification cylinder 23 and the low-temperature waste heat cylinder 24.

[0041] 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 cascade recovery device for waste heat from gypsum-based acid production tail gas, comprising a support frame (1), characterized in that: The top of the bracket (1) is provided with a connecting pipe (2), and the inner wall of the connecting pipe (2) is detachably connected with a filter pipe (3). The filter pipe (3) has multiple through grooves (4) inside. Activated carbon (5) is fixedly connected to the inner wall of the filter pipe (3). A filter screen (6) is fixedly connected to the inner wall of the filter pipe (3). Multiple connecting blocks (7) are fixedly connected to the outside of the filter pipe (3). Two sliding grooves (8) are opened inside the filter pipe (3). An L-ring (9) is slidably connected inside the sliding groove (8). Multiple connecting blocks (10) are fixedly connected to the inner wall of the L-ring (9). Limiting posts (11) are fixedly connected to the far side of the multiple connecting blocks (10). Springs (12) are fixedly connected to the near side of the multiple connecting blocks (10). A lever (13) is fixedly connected to the top of the L-ring (9). An adjustment component for temperature adjustment is fixedly connected to the top of the connecting pipe (2).

2. The waste heat recovery device for gypsum-based acid production tail gas according to claim 1, characterized in that: The adjustment assembly includes a connecting tube (14), a fixed box (15) is fixedly connected to the outside of the connecting tube (14), a motor (16) is fixedly connected to the top of the fixed box (15), a driven platform (17) is fixedly connected to the drive end of the motor (16), and a driven rod (18) is rotatably connected to the bottom of the driven platform (17).

3. The waste heat recovery device for gypsum-based acid production tail gas according to claim 2, characterized in that: The driven rod (18) is rotatably connected to the left side of the linkage rod (19), the linkage rod (19) is rotatably connected to the left side of the connecting rod (19) and the connecting rod (20) is rotatably connected to the left side of the connecting tube (14) and the connecting tube (14) is rotatably connected to the inner wall of the connecting tube (14) and the connecting tube (14) is rotatably connected to the inner wall of the connecting tube (14) and the adjusting net (22).

4. The waste heat recovery device for gypsum-based acid production tail gas according to claim 1, characterized in that: The outer side of the connecting block (7) is in contact with the inner wall of the through groove (4), and the inner wall of the connecting block (7) is in contact with the outer side of the limiting post (11).

5. The waste heat recovery device for gypsum-based acid production tail gas according to claim 1, characterized in that: One of the springs (12) is fixedly connected to the right inner wall of one of the slides (8), and the inner wall of the bracket (1) is fixedly connected to the waste heat classification cylinder (23).

6. The waste heat recovery device for gypsum-based acid production tail gas according to claim 2, characterized in that: The inner wall of the support (1) is fixedly connected to a low-temperature waste heat cylinder (24), and the inner wall of the support (1) is fixedly connected to an energy storage cylinder (25). A collection box (26) is provided on the right side of the support (1), and an energy exchange device (27) is provided on the right side of the collection box (26).

7. The waste heat recovery device for gypsum-based acid production tail gas according to claim 3, characterized in that: The external sliding connection of the linkage rod (19) is inside the connecting tube (14), and the left side of the connecting rod (20) is rotatably connected to the bottom of the adjusting net (22).

8. A cascade recovery device for waste heat from gypsum-based acid production tail gas according to claim 6, characterized in that: A control console (28) is provided on the right side of the energy exchange device (27), and the bottom of the connecting pipe (14) is fixedly connected to the top of the connecting pipe (2).

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