Waste gas purification device for aluminum oxide production
Through the cooling system composed of a compressed refrigerator and circulating pump, combined with the nozzle rotary spraying technology, the damage problem of high-temperature exhaust gas to the purification equipment is solved, and efficient exhaust gas cooling and purification is achieved.
Patent Information
- Application Number
- CN202421614301.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-09
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-07-09
AI Technical Summary
When existing exhaust gas purification devices deal with high-temperature exhaust gas, excessive exhaust gas temperature will damage the purification equipment.
A cooling system consisting of a compression refrigerator and a circulation pump is adopted. After the cooling liquid and high-temperature exhaust gas are exchanged, the exhaust gas is cooled down twice by the nozzle, and combined with the gear transmission system, the nozzle is rotated and sprayed to achieve rapid cooling of the exhaust gas.
It effectively avoids damage to the purification equipment, shortens the exhaust gas cooling time, and improves work efficiency.
Smart Images
Figure CN223179158U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of waste gas treatment in alumina production, and specifically refers to a waste gas purification device for alumina production. Background Technique
[0002] Alumina is a compound with high hardness and is commonly used in the manufacture of refractory materials. There are many polymorphs of alumina, and more than 10 are known, mainly 3 crystal forms, namely α-Al2O3, β-Al2O3, and γ-Al2O3. Among them, the structures are different and the properties are also different. At high temperatures above 1300 °C, it is almost completely converted into α-Al2O3. High-temperature waste gas will be generated during the production and processing of alumina. The waste gas cannot be directly discharged and needs to be treated by a waste gas purification device before being discharged.
[0003] When the existing waste gas purification device treats high-temperature waste gas, if it is directly purified, the high temperature in the waste gas will damage the purification equipment. For this reason, we propose a waste gas purification device for alumina production. Content of the Utility Model
[0004] In order to solve the problem that directly purifying the waste gas with too high temperature will damage the purification equipment as mentioned above, the utility model provides a waste gas purification device for alumina production.
[0005] In order to achieve the above functions, the technical solution adopted by the utility model is as follows: A waste gas purification device for alumina production includes a box body and a compression refrigerator. The compression refrigerator is installed on the top of the box body. A circulation pump is installed on the outer side wall of the box body. The water inlet of the circulation pump is connected with a return pipe, and the return pipe communicates with the bottom end of the side wall of the box body. The water outlet of the circulation pump is connected with a circulation pipe, and the circulation pipe is connected to the water inlet of the compression refrigerator. The bottom water outlet of the compression refrigerator is screwed with a connecting pipe, and the connecting pipe rotates through the top wall of the box body. The bottom end of the connecting pipe is annularly and arrayedly connected with multiple groups of branch pipes, and the upper and lower parts of the branch pipes are both connected with spray heads.
[0006] As a preferred technical solution of the utility model, a gear two is fixedly sleeved on the connecting pipe. A driving motor is installed on the top wall of the box body. The output end of the driving motor penetrates through the top wall of the box body, and the output end of the driving motor is connected with a gear one, and the gear one is meshed with the gear two.
[0007] As a preferred technical solution of the utility model, an air inlet pipe is communicated with the bottom end of one side of the box body, and air inlet branch pipes are evenly arranged at the bottom of the air inlet pipe.
[0008] As a preferred technical solution of the utility model, an exhaust pipe is communicated with the side wall of the box body.
[0009] As a preferred technical solution of the present utility model, a filter screen layer is installed inside the box body.
[0010] As a preferred technical solution of the present utility model, one-way valves are installed on both the intake pipe and the exhaust pipe.
[0011] Compared with the prior art, the present utility model adopts the above structure to achieve the following beneficial effects: Through the setting of the compression refrigeration machine and the circulation mechanism, the coolant is at the bottom of the box body. The high-temperature waste gas enters the box body and exchanges heat with the coolant, thereby completing the first cooling work. After the temperature of the coolant rises, the circulation pump extracts the heated coolant, and then the compression refrigeration machine cools the coolant. After that, the cooled coolant is sprayed into the box body again. At this time, the driving motor drives the first gear to rotate, the first gear drives the second gear to rotate, the second gear drives the branch pipe on the connecting pipe to rotate, and the nozzle on the branch pipe rotates to spray the waste gas in the box body. During the spraying process, the high-temperature gas is cooled for the second time, so that the cooling time of the high-temperature gas is shortened, time is saved, and work efficiency is improved. At the same time, the cooled waste gas is further purified, so that the purification device will not be damaged. Description of the Drawings
[0012] Figure 1 It is a schematic diagram of the overall structure of a waste gas purification device for producing alumina proposed by the present utility model;
[0013] Figure 2 It is a cross-sectional view of a waste gas purification device for producing alumina proposed by the present utility model;
[0014] Figure 3 It is a cross-sectional view of a waste gas purification device for producing alumina proposed by the present utility model;
[0015] Figure 4 It is Figure 3 The partial enlarged view at A in
[0016] Among them, 1. Box body, 2. Compression refrigeration machine, 3. Circulation pump, 4. Return pipe, 5. Circulation pipe, 6. Connecting pipe, 7. Branch pipe, 8. Nozzle, 9. Second gear, 10. Driving motor, 11. First gear, 12. Intake pipe, 13. Intake branch pipe, 14. Exhaust pipe, 15. Filter screen layer. Detailed Embodiments
[0017] Next, the technical solutions of the present utility model will be clearly and completely described in conjunction with the drawings. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0018] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation on the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. The following further describes the present utility model in detail with reference to the drawings.
[0019] As Figures 1-4 shown, a waste gas purification device for alumina production provided by the present utility model includes a box body 1 and a compression refrigerator 2. The compression refrigerator 2 is installed on the top of the box body 1. A circulation pump 3 is installed on the outer side wall of the box body 1. The water inlet of the circulation pump 3 is connected with a return pipe 4, and the return pipe 4 communicates with the bottom end of the side wall of the box body 1. The water outlet of the circulation pump 3 is connected with a circulation pipe 5, and the circulation pipe 5 is connected to the water inlet of the compression refrigerator 2. The bottom water outlet of the compression refrigerator 2 is screwed with a connecting pipe 6. The connecting pipe 6 rotates through the top wall of the box body 1. A plurality of groups of branch pipes 7 are annularly arranged and connected at the bottom end of the connecting pipe 6. Nozzles 8 are connected to both the upper and lower parts of the branch pipes 7. The coolant is at the bottom of the box body 1. High-temperature waste gas enters the box body 1 and exchanges heat with the coolant, thereby completing the first cooling work. After the temperature of the coolant rises, the heated coolant is extracted by the circulation pump 3, and then the coolant is cooled by the compression refrigerator 2. After that, the coolant with a lower temperature is sprayed into the box body 1 again. During the spraying process, the high-temperature gas is cooled for the second time, so that the cooling time of the high-temperature gas is shortened, time is saved, and work efficiency is improved.
[0020] As Figure 4 shown, a second gear 9 is fixedly sleeved on the connecting pipe 6. A driving motor 10 is installed on the top wall of the box body 1. The output end of the driving motor 10 passes through the top wall of the box body 1. The output end of the driving motor 10 is connected with a first gear 11. The first gear 11 is meshed with the second gear 9. The driving motor 10 drives the first gear 11 to rotate, the first gear 11 drives the second gear 9 to rotate, the second gear 9 drives the branch pipes 7 on the connecting pipe 6 to rotate, and the nozzles 8 on the branch pipes 7 rotate to spray the waste gas in the box body 1.
[0021] As Figures 1-3As shown in the figure, an intake pipe 12 is connected to the bottom end of one side of the box body 1. Intake branch pipes 13 are evenly arranged at the bottom of the intake pipe 12. After the waste gas enters through the intake pipe 12, it is evenly transported into the box body 1 through the intake branch pipes 13. An exhaust pipe 14 is connected to the side wall of the box body 1. Check valves are installed on both the intake pipe 12 and the exhaust pipe 14. A filter screen layer 15 is installed inside the box body 1.
[0022] During specific use, after the waste gas enters through the intake pipe 12, it is evenly transported into the box body 1 through the intake branch pipes 13. The coolant at the bottom of the box body 1 exchanges heat with the high-temperature waste gas, thus completing the first cooling work. After the temperature of the coolant rises, the circulation pump 3 is started. The circulation pump 3 extracts the heated coolant through the return pipe 4, and then transports it to the compression refrigerator 2 through the circulation pipe 5. The compression refrigerator 2 cools the coolant, and then sprays the cooled coolant into the box body 1 again. At this time, the drive motor 10 is started. The drive motor 10 drives the first gear 11 to rotate. The first gear 11 drives the second gear 9 to rotate. The second gear 9 drives the branch pipe on the connecting pipe 6 to rotate. The nozzle 8 on the branch pipe 7 rotates to spray the waste gas in the box body 1. During the spraying process, the high-temperature gas is cooled for the second time. The cooled waste gas enters the purification device through the exhaust pipe 14 for purification.
[0023] The above describes the present invention and its implementation manners. This description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present invention, and the actual structure is not limited thereto. All in all, if those of ordinary skill in the art are inspired by it and design similar structural manners and embodiments without creative work without departing from the creative purpose of the present invention, they shall fall within the protection scope of the present invention.
Claims
1. An alumina production waste gas purification device, comprising a box body (1) and a compression refrigerator (2), wherein the compression refrigerator (2) is installed on the top of the box body (1), and is characterized in that: A circulation pump (3) is installed on the outer side wall of the box body (1). The water inlet of the circulation pump (3) is connected with a return pipe (4), and the return pipe (4) communicates with the bottom end of the side wall of the box body (1). The water outlet of the circulation pump (3) is connected with a circulation pipe (5), and the circulation pipe (5) is connected to the water inlet of the compression refrigerator (2). The bottom water outlet of the compression refrigerator (2) is screwed and connected with a connecting pipe (6), and the connecting pipe (6) rotatably penetrates through the top wall of the box body (1). A plurality of groups of branch pipes (7) are annularly arranged and connected at the bottom end of the connecting pipe (6), and spray heads (8) are connected to both the upper and lower parts of the branch pipes (7).
2. The alumina production waste gas purification device according to claim 1, characterized in that: A second gear (9) is fixedly sleeved on the connecting pipe (6). A driving motor (10) is installed on the top wall of the box body (1). The output end of the driving motor (10) penetrates through the top wall of the box body (1). The output end of the driving motor (10) is connected with a first gear (11), and the first gear (11) is meshed with the second gear (9).
3. The alumina production waste gas purification device according to claim 2, characterized in that: An air inlet pipe (12) communicates with the bottom end of one side of the box body (1), and air inlet branch pipes (13) are uniformly arranged at the bottom of the air inlet pipe (12).
4. The alumina production waste gas purification device according to claim 3, characterized in that: An exhaust pipe (14) communicates with the side wall of the box body (1).
5. The purification device for waste gas in alumina production according to claim 4, wherein: A filter screen layer (15) is installed inside the box body (1).
6. The purification device for waste gas in alumina production according to claim 5, characterized in that: One-way valves are installed on both the air inlet pipe (12) and the exhaust pipe (14).