A purification and defluorination device for dilute acid
By using filters and ceramic reaction pipes in the dilute acid defluorination equipment, the problems of equipment blockage and high cost are solved, achieving a low-cost, easy-to-maintain, and highly efficient fluoride removal effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIYUAN WANYANG SMELTING GROUP
- Filing Date
- 2025-08-23
- Publication Date
- 2026-07-31
AI Technical Summary
Existing dilute acid defluorination equipment is expensive and prone to clogging, leading to equipment corrosion and shortened service life, making it difficult to effectively reduce the fluoride content in dilute acid.
The equipment uses a purified dilute acid defluorination device, which includes a defluorination tank body, a sealing cover, a protective tube, and a filter screen. The filter screen prevents impurities from entering. The dilute acid reacts with the ceramic packing material in the ceramic reaction pipe to remove fluoride. After the reaction, the dilute acid flows out from the outlet. The reaction pipe is detachable for easy maintenance.
It reduces equipment maintenance costs, prevents blockages, extends equipment lifespan, and effectively reduces the fluoride content in dilute acid.
Smart Images
Figure CN224573375U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of defluorination equipment technology, specifically a defluorination equipment for purifying dilute acid. Background Technology
[0002] Due to the influence of domestic and international raw materials, the fluorine and chlorine content in dilute acids in the chemical industry is increasing, severely restricting the safe production of sulfuric acid, causing equipment damage and excessive consumption. Currently, adding sodium silicate during the sulfuric acid production process can reduce some fluorine and chlorine levels, but most of the fluorine and chlorine still enters the later production systems, causing equipment corrosion. The high fluorine content in dilute sulfuric acid is causing corrosion of fiberglass flue gas ducts and plate heat exchangers, poisoning of vanadium catalysts, and decreased conversion rates. To improve production stability, prevent equipment damage, and extend equipment lifespan, a fluorine removal process for dilute acids is urgently needed.
[0003] Existing dilute acid defluorination equipment mostly uses sodium silicate (sodium silicate) solidification technology, but it is costly and prone to clogging. Therefore, we have proposed a new dilute acid purification and defluorination equipment to solve the above problems. Utility Model Content
[0004] The purpose of this invention is to provide a device for purifying dilute acid and removing fluoride, so as to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A defluorination device for purifying dilute acid includes a defluorination tank body. A sealing cover is secured to the upper end of the tank body by a first fixing bolt. An inlet is fixedly provided at the upper end of the sealing cover. A protective tube is secured to the inlet by a second fixing bolt. A filter screen is fixedly provided at the lower end of the protective tube.
[0007] A first limiting ring is fixedly installed on the upper part of the inner wall of the defluorination tank body, and a first pipe fixing plate is installed on the upper end of the first limiting ring. A second limiting ring is fixedly installed on the lower part of the inner wall of the defluorination tank body, and a second pipe fixing plate is installed on the upper end of the second limiting ring. Multiple sets of through holes of the same size are opened on the first pipe fixing plate and the second pipe fixing plate. A reaction pipe is embedded in the through hole between the first pipe fixing plate and the second pipe fixing plate.
[0008] Preferably, the bottom of the inner wall of the defluorination tank is lined with ceramic packing, and the reaction pipe is ceramic, used to react with dilute acid to remove fluoride.
[0009] Preferably, both ends of the reaction pipe are fixedly provided with connectors of the same diameter as the through hole, and a gasket is fitted onto the lower end connector of the reaction pipe. The gasket is made of ethylene propylene rubber.
[0010] Preferably, a sealing ring is provided between the sealing cover and the defluorination tank body to enhance the equipment's sealing performance.
[0011] Preferably, a limiting ring is provided at the lower end of the sealing cover to abut against the first pipe fixing plate.
[0012] Preferably, a handle is fixedly provided on the upper end of the first pipe fixing plate.
[0013] Preferably, a support leg is fixedly provided at the lower end of the defluorination tank body.
[0014] Preferably, an outlet is provided on one side of the defluorination tank body.
[0015] Compared with the prior art, the beneficial effects of this utility model are:
[0016] 1. This is a dilute acid purification and defluorination device. The dilute acid to be treated is fed into the inlet on the sealed cover. A protective tube is locked to the inlet by a second fixing bolt. The protective tube is equipped with a filter screen to prevent impurities from entering the equipment and causing blockage. Since the dilute acid containing fluoride is corrosive, the removable protective tube and filter screen are easy to replace. After the dilute acid enters the equipment, it flows down the inner wall of multiple sets of reaction pipes. The reaction pipes react with the ceramic packing and dilute acid to remove fluoride. The treated dilute acid flows out from the outlet on one side of the equipment.
[0017] 2. This type of dilute acid purification and defluorination equipment uses a first fixing bolt to install a sealing cover on the main body of the defluorination tank. A limiting ring is provided at the lower end of the sealing cover to hold the first pipe fixing plate against it. Together with the gasket below the reaction pipe, the reaction pipe is tightly embedded between the first pipe fixing plate and the second pipe fixing plate. By removing the sealing cover and taking off the first pipe fixing plate, the reaction pipe can be pulled out for replacement and maintenance. The equipment is inexpensive and easy to maintain. Multiple sets of equipment can be assembled as needed to further reduce the fluoride content. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0019] Figure 2 This is a schematic diagram of the limiting ring structure of this utility model;
[0020] Figure 3 This is a schematic diagram of the loading area of the reaction pipeline of this utility model;
[0021] Figure 4 This is a schematic diagram of the pipe fixing plate of this utility model;
[0022] Figure 5 This is a schematic diagram of the sealing cap of this utility model;
[0023] Figure 6 This is a schematic diagram of the filter screen of this utility model;
[0024] Figure 7 This is a schematic diagram of the first pipe fixing plate of this utility model;
[0025] Figure 8 This is a schematic diagram of the reaction pipeline of this utility model.
[0026] In the diagram: 1. Defluoridation tank body; 2. Sealing cover; 3. First fixing bolt; 4. Inlet; 5. Protective pipe; 6. Second fixing bolt; 7. Filter screen; 8. Sealing ring; 9. Restriction ring; 10. First limiting ring; 11. Second limiting ring; 12. First pipe fixing plate; 13. Second pipe fixing plate; 14. Reaction pipe; 15. Handle; 16. Connector; 17. Washer; 18. Through hole; 19. Support leg; 20. Outlet. Detailed Implementation
[0027] 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.
[0028] Please see Figures 1-5 As shown, this utility model provides a technical solution:
[0029] A defluorination device for purifying dilute acid includes a defluorination tank body 1. A sealing cover 2 is locked to the upper end of the defluorination tank body 1 by a first fixing bolt 3. An inlet 4 is fixedly provided at the upper end of the sealing cover 2. A protective tube 5 is locked to the inlet 4 by a second fixing bolt 6. A filter screen 7 is fixedly provided at the lower end of the protective tube 5.
[0030] A first limiting ring 10 is fixedly installed on the upper part of the inner wall of the defluorination tank body 1. A first pipe fixing plate 12 is installed at the upper end of the first limiting ring 10. A second limiting ring 11 is fixedly installed on the lower part of the inner wall of the defluorination tank body 1. A second pipe fixing plate 13 is installed at the upper end of the second limiting ring 11. Multiple sets of through holes 18 of the same size are opened on the first pipe fixing plate 12 and the second pipe fixing plate 13. A reaction pipe 14 is embedded in the through hole 18 between the first pipe fixing plate 12 and the second pipe fixing plate 13.
[0031] In this example, preferably, the bottom of the inner wall of the defluorination tank body 1 is lined with ceramic packing, and the reaction pipe 14 is ceramic, used to react with dilute acid to remove fluoride.
[0032] In this example, preferably, both the upper and lower ends of the reaction pipe 14 are fixedly provided with connectors 16 of the same diameter as the through hole 18, and a gasket 17 is sleeved on the lower end connector 16 of the reaction pipe 14. The gasket 17 is made of ethylene propylene rubber.
[0033] In this example, preferably, a sealing ring 8 is provided between the sealing cover 2 and the defluorination tank body 1 to enhance the equipment's sealing performance.
[0034] In this example, preferably, a limiting ring 9 is provided at the lower end of the sealing cover 2 to abut against the first pipe fixing plate 12.
[0035] In this example, preferably, a handle 15 is fixedly provided on the upper end of the first pipe fixing plate 12.
[0036] In this example, preferably, a support leg 19 is fixedly provided at the lower end of the defluorination tank body 1.
[0037] In this example, preferably, an outlet 20 is provided on one side of the defluorination tank body 1.
[0038] In this embodiment, a dilute acid purification and defluorination device is used. The dilute acid to be treated is fed into the device through the inlet 4 on the sealing cover 2. The inlet 4 is secured with a protective tube 5 by a second fixing bolt 6. A filter screen 7 is installed on the protective tube 5 to prevent impurities from entering the device and causing blockage. Since the dilute acid containing fluoride is corrosive, the removable protective tube 5 and filter screen 7 are easy to replace. After entering the device, the dilute acid flows down from multiple sets of reaction pipes 14. The reaction pipes 14 react with the ceramic packing and the dilute acid to remove fluoride. The treated dilute acid flows out from the outlet 20 on one side of the device.
[0039] The sealing cover 2 is installed on the main body 1 of the defluorination tank by the first fixing bolt 3. A limiting ring 9 is provided at the lower end of the sealing cover 2 to abut against the first pipe fixing plate 12. Together with the gasket 17 below the reaction pipe 14, the reaction pipe 14 is tightly embedded between the first pipe fixing plate 12 and the second pipe fixing plate 13. By removing the sealing cover 2 and taking off the first pipe fixing plate 12, the reaction pipe 14 can be pulled out for replacement and maintenance. The equipment is inexpensive and easy to maintain. Multiple sets of equipment can be assembled as needed to further reduce the fluorine content.
[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A device for purifying dilute acid from fluorine, comprising a fluorine removal tank body (1), characterized in that: The upper end of the defluorination tank body (1) is secured with a sealing cover (2) by a first fixing bolt (3). An inlet (4) is fixedly provided on the upper end of the sealing cover (2). A protective tube (5) is secured to the inlet (4) by a second fixing bolt (6). A filter screen (7) is fixedly provided on the lower end of the protective tube (5). A first limiting ring (10) is fixedly installed on the upper part of the inner wall of the defluorination tank body (1). A first pipe fixing plate (12) is installed on the upper end of the first limiting ring (10). A second limiting ring (11) is fixedly installed on the lower part of the inner wall of the defluorination tank body (1). A second pipe fixing plate (13) is installed on the upper end of the second limiting ring (11). Multiple sets of through holes (18) of the same size are opened on the first pipe fixing plate (12) and the second pipe fixing plate (13). A reaction pipe (14) is embedded in the through hole (18) between the first pipe fixing plate (12) and the second pipe fixing plate (13).
2. The device for removing fluorine from dilute acid according to claim 1, characterized in that: The bottom of the inner wall of the defluorination tank body (1) is lined with ceramic packing, and the reaction pipe (14) is ceramic and is used to react with dilute acid to remove fluoride.
3. The device for removing fluorine from dilute acid according to claim 1, characterized in that: Both ends of the reaction pipe (14) are fixedly provided with connectors (16) of the same diameter as the through hole (18). A gasket (17) is fitted onto the lower end connector (16) of the reaction pipe (14). The gasket (17) is made of ethylene propylene rubber.
4. The device for removing fluorine from dilute acid according to claim 1, characterized in that: A sealing ring (8) is provided between the sealing cover (2) and the defluorination tank body (1) to enhance the equipment's sealing performance.
5. The device for removing fluorine from dilute acid according to claim 1, characterized in that: The sealing cap (2) is provided with a limiting ring (9) at its lower end, which is used to abut against the first pipe fixing plate (12).
6. The device for removing fluorine from dilute acid according to claim 1, characterized in that: A handle (15) is fixedly installed on the upper end of the first pipe fixing plate (12).
7. The device for removing fluorine from dilute acid according to claim 1, characterized in that: The lower end of the defluorination tank body (1) is fixedly provided with a support leg (19).
8. The device for removing fluorine from dilute acid according to claim 1, characterized in that: An outlet (20) is provided on one side of the main body (1) of the defluorination tank.