A gasification slag treatment waste gas purification mechanism

Abstract

The application provides a gasification slag treatment waste gas purification mechanism and relates to the technical field of waste gas purification. The mechanism comprises a base, a purification device is arranged on one side of the top of the base, an output connector on one side of the top of the purification device is fixedly connected with a cooling outer pipe, and a filtering mechanism is arranged on the cooling outer pipe and close to the purification device. The cooling outer pipe, the cooling inner pipe, the input pipe, the output pipe, the collecting pipe, the collecting pipe and the collecting box are matched with each other. High-temperature flue gas flows in the annular channel between the cooling outer pipe and the cooling inner pipe, low-temperature cooling liquid flows in the cooling inner pipe and exchanges heat with the high-temperature flue gas in an interwall mode, indirect water cooling of the waste gas is realized, the defects of traditional open air cooling, such as dependence on environmental temperature and humidity and large fluctuation of cooling effect, are overcome, and the stability and reliability of waste gas cooling are ensured.

Description

Technical Field

[0001] This utility model relates to the field of waste gas purification technology, and more specifically, to a waste gas purification mechanism for gasification slag treatment. Background Technology

[0002] Gasification slag is a solid waste generated during coal gasification. With the rapid development of the coal chemical industry, the output of gasification slag has been increasing year by year. Incineration or melting of gasification slag is an important way to reduce its volume and make it a resource. However, the process generates high-temperature waste gas containing harmful components such as dust, sulfur oxides, nitrogen oxides and volatile organic compounds. If it is discharged directly without effective treatment, it will cause serious pollution to the atmospheric environment.

[0003] For example, the "A Gasification Slag Treatment Waste Gas Purification Mechanism" disclosed in Chinese Utility Model Patent (Publication No.: CN224442525U) states that the waste gas is discharged through a first exhaust pipe and a second exhaust port. A fan blows on the heat sink plate, and the heat sink and heat sink plate dissipate heat from the high-temperature waste gas. This solves the problem that in existing gasification slag treatment waste gas purification structures, high-temperature waste gas may cause the filter cloth pores of the bag filter to become larger, increasing the dust penetration rate. Furthermore, sticky dust such as tar may clump on the surface of the bag filter, clogging the filter pores and affecting the dust removal effect. Regarding the aforementioned technologies, this device has some shortcomings. In actual use, it indirectly cools the purified high-temperature exhaust gas and collects condensate through heat sinks and fans. This method is essentially an open-loop air cooling system, and the cooling effect is highly dependent on the ambient temperature and humidity, which is not conducive to the reliability of the entire exhaust gas purification system and the consistency of the treatment effect.

[0004] Therefore, we have made improvements to this and proposed a gasification slag treatment waste gas purification mechanism. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a gasification slag treatment waste gas purification mechanism, which solves the problems mentioned in the background technology.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A gasification slag treatment waste gas purification mechanism includes a base, a purification device is provided on one side of the top of the base, a cooling outer pipe is fixedly connected to the output connector above one side of the purification device, a filter mechanism is provided on the cooling outer pipe near the purification device, and an air-cooling mechanism is provided on the top of the base in front of the cooling outer pipe. An inner cooling tube is fixedly installed inside the outer cooling tube. Both ends of the inner cooling tube pass through the outer cooling tube and extend to the outside of the outer cooling tube. An input tube is fixedly installed at one end of the inner cooling tube, and an output tube is fixedly installed at the other end of the inner cooling tube. A discharge tube is fixedly installed at the rear side of one end of the outer cooling tube. A collection box is fixedly installed on the other side of the top of the base. A collection pipe is fixedly installed on the top of the collection box. Several collection pipes are fixedly installed at the lowest end of the outer wall of the cooling outer pipe. The bottom ends of the collection pipes are all fixedly connected to the collection pipe.

[0007] As a preferred technical solution of this application, the air-cooling mechanism includes a support rod fixedly installed on the top of the base in front of the cooling outer pipe, a fixed frame fixedly installed at the top of the support rod, a rotating shaft rotatably installed inside the fixed frame, a fan fixedly installed on the rotating shaft, an adjustment mechanism provided at the top of the fixed frame, and a controller fixedly installed on one side of the fixed frame.

[0008] As a preferred technical solution of this application, the adjustment mechanism includes an electric telescopic rod fixedly installed on the top of the fixed frame, the top end of the rotating shaft passing through the fixed frame and extending above the top of the fixed frame, a gear fixedly installed on the top end of the rotating shaft, a toothed plate fixedly installed on the driving end of the electric telescopic rod, the toothed plate meshing with the gear, and the toothed plate slidably connected to the top of the fixed frame.

[0009] As a preferred technical solution of this application, a protective cover is fixedly installed on the top of the fixed frame, and the adjustment mechanism is located inside the protective cover.

[0010] As a preferred technical solution of this application, the filtration mechanism includes a filter box fixedly installed on the cooling outer pipe. The top of the filter box has an open structure. A limiting groove is formed on the inner wall of the filter box. A filter frame is slidably inserted into the filter box through the limiting groove. A filter screen is fixedly installed inside the filter frame. A sealing cover plate is fixedly installed on the top of the filter box by bolts.

[0011] As a preferred technical solution of this application, the outer diameter of the inner cooling tube is smaller than the inner diameter of the outer cooling tube, and an annular channel is formed between the inner wall of the outer cooling tube and the outer wall of the inner cooling tube.

[0012] As a preferred technical solution of this application, the outer cooling tube is wavy in shape and is adapted to the inner cooling tube.

[0013] As a preferred technical solution of this application, a number of stabilizing frames are fixedly installed between the fixed frame and the outer wall of the cooling outer pipe.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: In the scheme of this application: 1. By setting up an external cooling pipe, an internal cooling pipe, an inlet pipe, an outlet pipe, a collection pipe, a confluence pipe, and a collection box, the high-temperature flue gas flows in the annular channel between the external and internal cooling pipes, while the low-temperature coolant flows inside the internal cooling pipe and exchanges heat with the high-temperature flue gas through an indirect water cooling mechanism. This achieves indirect water cooling of the exhaust gas, overcoming the shortcomings of traditional open air cooling systems that rely on ambient temperature and humidity and have large fluctuations in cooling effect, thus ensuring the stability and reliability of exhaust gas cooling. At the same time, the condensate flows into the collection box for storage through the collection pipe and confluence pipe, and the coolant that has absorbed heat is discharged through the outlet pipe for recycling, realizing the orderly treatment of condensate and the secondary recovery of heat energy, thereby improving the environmental protection and economic efficiency of the system.

[0015] 2. By setting an adjustment mechanism consisting of an electric telescopic rod, a toothed plate, a gear, and a rotating shaft at the top of the fixed frame, the electric telescopic rod drives the toothed plate to slide back and forth, thereby driving the gear and rotating shaft to rotate, thus precisely adjusting the air delivery angle of the fan. This enables the air-cooling mechanism to flexibly adjust the air delivery direction according to the external environment and actual working conditions, effectively improving the targeting and controllability of auxiliary cooling. Attached Figure Description

[0016] Figure 1 A three-dimensional structural schematic diagram of a gasification slag treatment waste gas purification mechanism provided in this application; Figure 2 A rear view structural schematic diagram of a gasification slag treatment waste gas purification mechanism provided in this application; Figure 3 A cross-sectional structural schematic diagram of a gasification slag treatment waste gas purification mechanism provided in this application; Figure 4 This application provides a schematic diagram of the structure of the fixed frame in a gasification slag treatment waste gas purification mechanism; Figure 5 A cross-sectional schematic diagram of the cooling outer pipe and cooling inner pipe in a gasification slag treatment waste gas purification mechanism provided in this application; Figure 6 This is a schematic diagram of the filtration mechanism in a gasification slag treatment waste gas purification device provided in this application.

[0017] The image shows: 1. Base; 2. Purification device; 3. Filtration mechanism; 4. Cooling outer pipe; 5. Stabilizer; 6. Protective cover; 7. Support rod; 8. Fixing frame; 9. Fan; 10. Rotating shaft; 11. Controller; 12. Discharge pipe; 13. Collection pipe; 14. Collection pipe; 15. Collection box; 16. Electric telescopic rod; 17. Tooth plate; 18. Gear; 19. Input pipe; 20. Output pipe; 21. Cooling inner pipe; 22. Filter box; 23. Limiting groove; 24. Filter frame; 25. Sealing cover. Detailed Implementation

[0018] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention 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 invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0019] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0020] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] Example 1 Please refer to Figures 1-6 A gasification slag treatment waste gas purification mechanism includes a base 1. A purification device 2 is provided on one side of the top of the base 1. The specific structure of the purification device 2 can refer to the prior art, which can be easily implemented by those skilled in the art. A cooling outer pipe 4 is fixedly connected to the output connector on one side of the purification device 2. A filter mechanism 3 is provided on the cooling outer pipe 4 near the purification device 2. An air-cooling mechanism is provided on the top of the base 1 in front of the cooling outer pipe 4. A cooling inner pipe 21 is fixedly installed inside the cooling outer pipe 4. Both ends of the cooling inner pipe 21 pass through the cooling outer pipe 4 and extend to the outside of the cooling outer pipe 4. An input pipe 19 is fixedly installed at one end of the cooling inner pipe 21, and an output pipe 20 is fixedly installed at the other end of the cooling inner pipe 21. A discharge pipe 12 is fixedly installed on the rear side of one end of the cooling outer pipe 4. A collection box 15 is fixedly installed on the other side of the top of the base 1. A collecting pipe 13 is fixedly installed on the top of the collection box 15. Several collection pipes 14 are fixedly installed at the lowest end of the outer wall of the cooling outer pipe 4. The bottom ends of the collection pipes 14 are all fixedly connected to the collecting pipe 13.

[0023] High-temperature flue gas flows in the annular channel between the outer cooling pipe 4 and the inner cooling pipe 21, while low-temperature coolant flows inside the inner cooling pipe 21 and undergoes indirect heat exchange, achieving indirect water cooling of the exhaust gas. This overcomes the shortcomings of traditional open air cooling, which relies on ambient temperature and humidity and has large fluctuations in cooling effect, ensuring the stability of exhaust gas cooling. At the same time, condensate flows into the collection box 15 for storage through the collection pipe 14 and the converging pipe 13, preventing condensate from accumulating in the pipes and protecting downstream equipment.

[0024] Furthermore, the air-cooling mechanism includes a support rod 7 fixedly installed on the top of the base 1 in front of the cooling outer pipe 4. A fixed frame 8 is fixedly installed at the top of the support rod 7. A rotating shaft 10 is rotatably installed inside the fixed frame 8. A fan 9 is fixedly installed on the rotating shaft 10. An adjustment mechanism is provided on the top of the fixed frame 8. A controller 11 is fixedly installed on one side of the fixed frame 8.

[0025] The fan 9 is mounted inside the fixed frame 8 via the rotating shaft 10. The controller 11 can drive the fan 9 to force convection blowing on the outer wall of the cooling outer pipe 4, accelerate the heat dissipation on the pipe wall surface, help improve the overall cooling efficiency, and further enhance the adaptability and reliability of the cooling system.

[0026] Furthermore, the filtration mechanism 3 includes a filter box 22 fixedly installed on the cooling outer pipe 4. The top of the filter box 22 is an open structure. A limiting groove 23 is opened on the inner wall of the filter box 22. A filter frame 24 is slidably inserted into the filter box 22 through the limiting groove 23. A filter screen is fixedly installed inside the filter frame 24. A sealing cover plate 25 is fixedly installed on the top of the filter box 22 by bolts.

[0027] After entering the cooling outer pipe 4, the exhaust gas first flows through the filter frame 24 and its filter screen to initially intercept and filter the residual particulate matter, effectively preventing impurities from depositing in the subsequent annular channel and affecting the heat exchange efficiency. At the same time, the filter frame 24 is slidably inserted through the limiting groove 23, which makes it easy to remove for cleaning or replacement maintenance on a regular basis. The sealing cover 25 ensures the sealing of the filter box 22 and prevents gas leakage.

[0028] Furthermore, the outer diameter of the inner cooling tube 21 is smaller than the inner diameter of the outer cooling tube 4, and an annular channel is formed between the inner wall of the outer cooling tube 4 and the outer wall of the inner cooling tube 21.

[0029] High-temperature flue gas can flow evenly along the annular channel, increasing the contact area between the high-temperature flue gas and the wall of the cooling inner tube 21, making heat transfer more complete and efficient, and improving the overall heat exchange efficiency of the indirect heat exchange.

[0030] Furthermore, the outer cooling tube 4 is wavy in shape and is adapted to the inner cooling tube 21.

[0031] The wave-shaped structure effectively extends the flow path of high-temperature flue gas inside the cooling outer pipe 4, increases the heat exchange time between the flue gas and the wall of the cooling inner pipe 21, and enables the exhaust gas to be cooled more fully, further improving the cooling effect.

[0032] Furthermore, several stabilizing brackets 5 are fixedly installed between the fixed frame 8 and the outer wall of the cooling outer pipe 4.

[0033] The stabilizer 5 securely connects the fixing frame 8 to the outer wall of the cooling outer tube 4, effectively enhancing the stability of the cooling outer tube 4.

[0034] Example 2 The gasification slag treatment waste gas purification mechanism provided in Example 1 is further optimized. Specifically, the adjustment mechanism includes an electric telescopic rod 16 fixedly installed on the top of the fixed frame 8, the top end of the rotating shaft 10 passing through the fixed frame 8 and extending to the top of the fixed frame 8, a gear 18 fixedly installed on the top end of the rotating shaft 10, and a toothed plate 17 fixedly installed on the drive end of the electric telescopic rod 16. The toothed plate 17 meshes with the gear 18 and is slidably connected to the top of the fixed frame 8.

[0035] The electric telescopic rod 16 drives the toothed plate 17 to slide back and forth, which in turn drives the meshing gear 18 and the rotating shaft 10 to rotate, thereby precisely adjusting the air delivery angle of the fan 9. This enables the fan to flexibly adjust the air delivery direction according to the external environment and actual working conditions, effectively improving the targeting and controllability of auxiliary cooling.

[0036] Furthermore, a protective cover 6 is fixedly installed on the top of the fixed frame 8, and the adjustment mechanism is located inside the protective cover 6.

[0037] The protective cover 6 completely encloses the precision components such as the electric telescopic rod 16, toothed plate 17, and gear 18, effectively avoiding interference from external environmental factors and improving operational stability.

[0038] It should be noted that the controller control circuit can be implemented by those skilled in the art through simple programming, and is common knowledge in the field. It is only used and not modified, so the control method and circuit connection will not be described in detail.

[0039] The usage process of the gasification slag treatment waste gas purification mechanism provided by this utility model is as follows: The high-temperature exhaust gas first enters the purification device 2 through the gasification slag treatment equipment. After pretreatment such as dust removal, desulfurization, and denitrification, it forms high-temperature wet flue gas. This flue gas enters the internal channel of the cooling outer pipe 4 through the output connector and first flows through the filter mechanism 3. The exhaust gas passes through the filter frame 24 and its filter screen inserted in the filter box 22, which performs preliminary interception and filtration of residual particulate matter in the exhaust gas. The filtered high-temperature flue gas then flows back into the cooling outer pipe 4 and continues to flow forward along the annular channel formed between the cooling outer pipe 4 and the cooling inner pipe 21, that is, the high-temperature flue gas flows between the inner wall of the cooling outer pipe 4 and the outer wall of the cooling inner pipe 21. At the same time, the external coolant supply pipe injects low-temperature coolant into the internal channel of the cooling inner pipe 21 through the input pipe 19. During the flow of the coolant in the cooling inner pipe 21, it exchanges heat with the high-temperature flue gas flowing in the annular channel through the pipe wall of the cooling inner pipe 21, realizing indirect water cooling of the high-temperature exhaust gas.

[0040] During the cooling process, the water vapor contained in the high-temperature flue gas condenses into condensate upon contact with the cold air. The condensate, under gravity, collects at the lowest point of the inner wall of the cooling outer pipe 4 and flows through multiple collection pipes 14 into the top collection pipe 13, ultimately flowing into the collection box 15 for centralized storage, achieving gas-liquid separation and unified condensate recovery. The coolant used for cooling, after absorbing heat and increasing its temperature, is discharged through the output pipe 20 into an external recovery pipeline, where it can be used as a heat source for other purposes such as plant heating and process preheating, achieving heat energy recovery and utilization. Simultaneously, the cooled and dehumidified low-temperature exhaust gas is discharged through the discharge pipe 12 to the next stage of processing. Throughout the heat dissipation process, the air-cooling mechanism can be selectively activated according to external environmental conditions and actual operating conditions. The controller 11 drives the fan 9 to force convection blowing on the outer wall of the cooling outer pipe 4, accelerating heat dissipation from the pipe wall surface and helping to improve cooling efficiency. Meanwhile, the electric telescopic rod 16 in the adjustment mechanism can drive the toothed plate 17 to move back and forth, thereby rotating the gear 18 and the rotating shaft 10 that mesh with it, and precisely adjusting the air delivery angle of the fan 9 to ensure the controllability and flexibility of the auxiliary cooling. A temperature sensor is installed in the annular channel to monitor the temperature change of the flue gas in real time and feed the temperature signal back to the controller 11 so that the coolant flow rate or the operating parameters of the air-cooling mechanism can be automatically adjusted according to the set threshold to ensure that the flue gas temperature is always within a controllable range.

[0041] It should be noted that all components used in this application are standard parts that can be purchased from the market. The specific connection methods of each part adopt conventional methods such as bolts, rivets and welding that are mature in the prior art. The mechanical parts and electrical equipment adopt conventional models in the prior art. The circuit connection adopts conventional connection methods in the prior art. The electrical equipment is connected to an external safe power source. These will not be described in detail here.

[0042] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0043] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; conversely, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this 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 specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. A gasification slag treatment waste gas purification mechanism, characterized in that, Includes a base (1), a purification device (2) is provided on one side of the top of the base (1), a cooling outer pipe (4) is fixedly connected to the output connector above one side of the purification device (2), a filter mechanism (3) is provided on the cooling outer pipe (4) near the purification device (2), and an air-cooling mechanism is provided on the top of the base (1) in front of the cooling outer pipe (4). A cooling inner tube (21) is fixedly installed inside the cooling outer tube (4). Both ends of the cooling inner tube (21) pass through the cooling outer tube (4) and extend to the outside of the cooling outer tube (4). An input tube (19) is fixedly installed at one end of the cooling inner tube (21), and an output tube (20) is fixedly installed at the other end of the cooling inner tube (21). A discharge tube (12) is fixedly installed on the rear side of one end of the cooling outer tube (4). A collection box (15) is fixedly installed on the other side of the top of the base (1). A collection pipe (13) is fixedly installed on the top of the collection box (15). Several collection pipes (14) are fixedly installed at the lowest end of the outer wall of the cooling outer pipe (4). The bottom ends of the collection pipes (14) are all fixedly connected to the collection pipes (13).

2. The gasification slag treatment waste gas purification mechanism according to claim 1, characterized in that, The air-cooling mechanism includes a support rod (7) fixedly installed on the top of the base (1) in front of the cooling outer pipe (4). A fixed frame (8) is fixedly installed at the top of the support rod (7). A rotating shaft (10) is rotatably installed inside the fixed frame (8). A fan (9) is fixedly installed on the rotating shaft (10). An adjustment mechanism is provided on the top of the fixed frame (8). A controller (11) is fixedly installed on one side of the fixed frame (8).

3. The gasification slag treatment waste gas purification mechanism according to claim 2, characterized in that, The adjustment mechanism includes an electric telescopic rod (16) fixedly installed on the top of the fixed frame (8). The top end of the rotating shaft (10) passes through the fixed frame (8) and extends to the top of the fixed frame (8). A gear (18) is fixedly installed on the top end of the rotating shaft (10). A toothed plate (17) is fixedly installed on the driving end of the electric telescopic rod (16). The toothed plate (17) meshes with the gear (18). The toothed plate (17) is slidably connected to the top of the fixed frame (8).

4. The gasification slag treatment waste gas purification mechanism according to claim 3, characterized in that, A protective cover (6) is fixedly installed on the top of the fixed frame (8), and the adjustment mechanism is located inside the protective cover (6).

5. The gasification slag treatment waste gas purification mechanism according to claim 1, characterized in that, The filtration mechanism (3) includes a filter box (22) fixedly installed on the cooling outer pipe (4). The top of the filter box (22) is an open structure. A limiting groove (23) is opened on the inner wall of the filter box (22). A filter frame (24) is slidably inserted into the filter box (22) through the limiting groove (23). A filter screen is fixedly installed inside the filter frame (24). A sealing cover plate (25) is fixedly installed on the top of the filter box (22) by bolts.

6. The gasification slag treatment waste gas purification mechanism according to claim 1, characterized in that, The outer diameter of the inner cooling tube (21) is smaller than the inner diameter of the outer cooling tube (4). An annular channel is formed between the inner wall of the outer cooling tube (4) and the outer wall of the inner cooling tube (21). A temperature sensor is installed inside the annular channel.

7. The gasification slag treatment waste gas purification mechanism according to claim 1, characterized in that, The outer cooling tube (4) is wavy in shape and is adapted to the inner cooling tube (21).

8. The gasification slag treatment waste gas purification mechanism according to claim 2, characterized in that, Several stabilizing frames (5) are fixedly installed between the fixed frame (8) and the outer wall of the cooling outer pipe (4).

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