Reaction device for treating ammonium nitrogen in phosphogypsum leachate
Patent Information
- Application Number
- CN202522517627.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-27
- Publication Date
- 2026-10-30
- Estimated Expiration
- 2035-11-27
AI Technical Summary
[0002]磷石膏作为磷酸工业的主要固体废弃物，年排放量巨大，目前行业内普遍采用露天堆存的处置方式，在长期堆存过程中，雨水淋溶、地下水渗透会促使磷石膏中含有的铵态氮溶解并迁移，形成高浓度铵氮渗滤液，若该渗滤液未经妥善处理直接排放或下渗，一方面会导致周边地表水体富营养化，引发藻类疯长，破坏水生生态平衡，另一方面会污染土壤与地下水资源，影响农作物生长，甚至通过食物链威胁人体健康，因此磷石膏渗滤液铵氮处理是磷化工企业环保达标、实现绿色生产的关键环节
1、本实用新型中，启动控制机构的伺服电机，带动第一减速齿轮、第二减速齿轮转动，使搅拌组件的活动杆驱动第一转杆、第二转杆旋转，利用螺旋搅拌叶、平板式搅拌叶、锥形搅拌叶分别作用于反应罐上部、中部、下部，确保混合液充分搅拌，提升铵氮反应效率；
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Figure CN224917591U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of phosphogypsum treatment technology, and in particular to a reaction device for treating ammonium nitrogen in phosphogypsum leachate. Background Technology
[0002] As a major solid waste from the phosphoric acid industry, phosphogypsum has a huge annual discharge. Currently, the industry generally uses open-air storage for disposal. During long-term storage, rainwater leaching and groundwater infiltration will cause the ammonium nitrogen contained in phosphogypsum to dissolve and migrate, forming high-concentration ammonium nitrogen leachate. If this leachate is discharged or seeps into the ground without proper treatment, it will lead to eutrophication of surrounding surface waters, causing algae to grow wildly and disrupting the aquatic ecological balance. On the other hand, it will pollute soil and groundwater resources, affect crop growth, and even threaten human health through the food chain. Therefore, the treatment of ammonium nitrogen in phosphogypsum leachate is a key link for phosphoric chemical enterprises to meet environmental protection standards and achieve green production.
[0003] However, traditional treatment devices still have the following shortcomings in practical applications: 1. Traditional devices use a single type of stirring component, which is difficult to cover different areas inside the reaction tank, resulting in uneven mixing of leachate and alkali solution in the upper, middle, and lower parts of the tank, and incomplete local reactions, affecting the ammonium nitrogen removal efficiency; 2. Large particulate impurities carried in the leachate (such as incompletely dissolved phosphogypsum particles, silt, etc.) can easily enter the reaction tank directly, which not only easily clogs the discharge pipe, increasing the frequency and cost of equipment maintenance, but also adheres to the surface of the stirring components, affecting the stirring effect and making it difficult to meet the requirements of continuous and stable treatment. Therefore, we have introduced a reaction device for the ammonium nitrogen treatment of phosphogypsum leachate. Utility Model Content
[0004] The main objective of this invention is to provide a reaction device for treating ammonium nitrogen in phosphogypsum leachate, which can effectively solve the problems in the background art.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A reaction apparatus for treating ammonium nitrogen in phosphogypsum leachate includes a fixing ring with three support rods fixedly connected to its lower end. A reaction vessel is fixedly fitted inside the fixing ring. A feeding assembly is fixedly connected to the upper left side of the reaction vessel. A U-shaped plate is fixedly connected to the upper middle part of the reaction vessel. A control mechanism is installed on the upper part of the U-shaped plate. An exhaust pipe is fixedly connected to the upper right side of the reaction vessel. A first switching valve is movably installed on the outer surface of the exhaust pipe. A discharge pipe is fixedly connected to the lower end of the reaction vessel. A second switching valve is movably installed on the outer surface of the discharge pipe.
[0006] Preferably, the control mechanism includes a servo motor, the output end of which is fixedly mounted with a first reduction gear, the outer surface of which is meshed with a second reduction gear, the lower end of which is fixedly connected with a stirring assembly, the lower end of which is fixedly connected to the upper end of the U-shaped plate, and the output end of which passes through the upper end of the U-shaped plate and extends into the U-shaped plate.
[0007] By adopting the above technical solution: the servo motor provides stable power for stirring, and the meshing transmission of the first reduction gear and the second reduction gear can reduce the output speed of the servo motor and increase the torque, so that the stirring component can obtain a suitable stirring rate and force, avoiding splashing of the mixture due to excessive speed or affecting the mixing effect due to excessively slow speed, and ensuring that the ammonium nitrogen reaction is complete.
[0008] Preferably, the lower end of the first reduction gear is movably connected to the upper end of the reaction vessel via a rotating shaft, and the upper end of the second reduction gear is movably connected to the upper inner wall of the U-shaped plate via a rotating shaft.
[0009] By adopting the above technical solution, the rotating shaft supports and limits the first reduction gear and the second reduction gear respectively, ensuring that the first reduction gear rotates stably at the top of the reaction tank and the second reduction gear runs smoothly in the U-shaped plate, avoiding deviation and shaking during the transmission of the first and second reduction gears, ensuring the stability and service life of the reduction transmission structure, and thus maintaining the normal operation of the stirring component.
[0010] Preferably, the stirring assembly includes a movable rod, a first rotating rod fixedly connected to the lower end of the movable rod, two spiral stirring blades fixedly connected to the upper and lower parts of the outer surface of the first rotating rod, a plurality of flat stirring blades fixedly connected to the middle part of the outer surface of the first rotating rod, a second rotating rod fixedly connected to the lower end of the first rotating rod, three conical stirring blades fixedly connected to the outer surface of the second rotating rod, and a connecting rod fixedly connected to one end of each of the three conical stirring blades near the center of the second rotating rod, and the ends of the three connecting rods near the center of the second rotating rod are fixedly connected to the outer surface of the second rotating rod.
[0011] By adopting the above technical solutions: the spiral stirring blades can stir the mixture in the upper and lower parts of the reaction tank by turning it up and down, the flat stirring blades can stir the mixture in the middle part by turning it horizontally, and the conical stirring blades can be adapted to the bottom structure of the tank to fully stir the mixture in the lower part, so as to achieve full stirring in the entire area of the reaction tank, improve the uniformity of the mixing of leachate and alkali solution, and promote the ammonium nitrogen reaction.
[0012] Preferably, the upper end of the movable rod is fixedly connected to the lower end of the second reduction gear, and the lower end of the movable rod is movably connected to the upper end of the reaction vessel through a bearing.
[0013] By adopting the above technical solution: the upper end of the movable rod is fixed to the second reduction gear, which can stably receive the power of the gear transmission, and the lower end is connected to the reaction vessel through the bearing. This not only realizes the flexible rotation of the movable rod, but also reduces the friction and wear between the movable rod and the reaction vessel, ensuring the long-term stable operation of the movable rod. At the same time, the bearing can play a sealing role to prevent the liquid in the reaction vessel from leaking from the connection between the movable rod and the reaction vessel wall.
[0014] Preferably, the structure of the three conical stirring blades is adapted to the lower conical structure of the reaction vessel, and there are gaps between the three spiral stirring blades and the three conical stirring blades and the inner wall surface of the reaction vessel.
[0015] By adopting the above technical solution: the conical stirring blades are adapted to the conical structure at the bottom of the reaction vessel, which can fully stir the mixture at the bottom of the vessel; The gaps between the spiral and conical stirring blades and the reaction vessel wall prevent the stirring blades from colliding with the reaction vessel wall during rotation, thus extending the service life of the spiral and conical stirring blades and the reaction vessel. At the same time, it prevents the spiral and conical stirring blades from scraping the reaction vessel wall, causing impurities to fall off and mix into the mixture, ensuring the treatment effect.
[0016] Preferably, the feeding assembly includes a Y-shaped feed pipe, a third switching valve is movably installed on the outer surface of the Y-shaped feed pipe, a filter grid is movably sleeved inside the Y-shaped feed pipe, a sealing cap is movably sleeved at the upper end of the Y-shaped feed pipe, a leachate feed pipe is fixedly connected to the upper left part of the sealing cap, a fourth switching valve is movably installed on the outer surface of the leachate feed pipe, an alkali addition pipe is fixedly connected to the upper right part of the sealing cap, and the lower end of the Y-shaped feed pipe is fixedly connected to the upper end of the reaction vessel.
[0017] By adopting the above technical solution, the filter grid can filter large particulate impurities in the leachate and avoid clogging the equipment.
[0018] Compared with the prior art, the present invention has the following beneficial effects: 1. In this utility model, the servo motor of the start control mechanism drives the first reduction gear and the second reduction gear to rotate, so that the moving rod of the stirring assembly drives the first rotating rod and the second rotating rod to rotate. The spiral stirring blade, the flat stirring blade and the conical stirring blade act on the upper, middle and lower parts of the reaction tank respectively to ensure that the mixture is fully stirred and improve the ammonium nitrogen reaction efficiency. 2. In this utility model, the phosphogypsum leachate is introduced into the reaction tank through the leachate inlet pipe and the Y-shaped inlet pipe. At the same time, alkali solution is added into the reaction tank through the alkali addition pipe at the top of the sealing cover. The filter grid in the Y-shaped inlet pipe filters out large particulate impurities in the leachate, preventing impurities from entering the reaction tank and clogging the outlet pipe. This avoids pipe blockage and eliminates the need for frequent disassembly and cleaning, significantly reducing equipment maintenance frequency and costs, and ensuring continuous and stable processing. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall structure of a reaction device for treating ammonium nitrogen in phosphogypsum leachate according to the present invention. Figure 2 This is a cross-sectional view of the reaction device for treating ammonium nitrogen in phosphogypsum leachate according to the present invention (the reaction vessel is shown in the cross-section). Figure 3 This is a schematic diagram of the feeding assembly of a reaction device for treating ammonium nitrogen in phosphogypsum leachate according to this utility model; Figure 4 This is an exploded view of the feeding assembly of a reaction device for treating ammonium nitrogen in phosphogypsum leachate according to this utility model. Figure 5 This is a schematic diagram of the control mechanism of a reaction device for treating ammonium nitrogen in phosphogypsum leachate according to this utility model; Figure 6 This is a schematic diagram of the stirring assembly of a reaction device for treating ammonium nitrogen in phosphogypsum leachate according to this utility model.
[0020] In the diagram: 1. Fixed ring; 2. Support rod; 3. Reaction vessel; 4. Feeding assembly; 5. U-shaped plate; 6. Control mechanism; 7. Gas outlet pipe; 8. First switching valve; 9. Discharge pipe; 10. Second switching valve; 41. Y-shaped feed pipe; 42. Third switching valve; 43. Filter grid; 44. Sealing cover; 45. Leachate feed pipe; 46. Fourth switching valve; 47. Alkali addition pipe; 61. Servo motor; 62. First reduction gear; 63. Second reduction gear; 64. Stirring assembly; 641. Movable rod; 642. First rotating rod; 643. Spiral stirring blade; 644. Flat plate stirring blade; 645. Second rotating rod; 646. Conical stirring blade; 647. Connecting rod. Detailed Implementation
[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0022] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0024] Please see Figure 1-6 This utility model provides a technical solution: A reaction apparatus for treating ammonium nitrogen in phosphogypsum leachate includes a fixing ring 1, three support rods 2 fixedly connected to the lower end of the fixing ring 1, a reaction tank 3 fixedly sleeved inside the fixing ring 1, a feeding assembly 4 fixedly connected to the upper left part of the reaction tank 3, a U-shaped plate 5 fixedly connected to the upper middle part of the reaction tank 3, a control mechanism 6 installed on the upper end of the U-shaped plate 5, an exhaust pipe 7 fixedly connected to the upper right part of the reaction tank 3, a first switching valve 8 movably installed on the outer surface of the exhaust pipe 7, and a discharge pipe 9 fixedly connected to the lower end of the reaction tank 3, a second switching valve 10 movably installed on the outer surface of the discharge pipe 9.
[0025] In this embodiment, the control mechanism 6 includes a servo motor 61. A first reduction gear 62 is fixedly mounted on the output end of the servo motor 61. A second reduction gear 63 is meshed with the outer surface of the first reduction gear 62. A stirring assembly 64 is fixedly connected to the lower end of the second reduction gear 63. The lower end of the servo motor 61 is fixedly connected to the upper end of the U-shaped plate 5, and the output end of the servo motor 61 passes through the upper end of the U-shaped plate 5 and extends into the U-shaped plate 5. The lower end of the first reduction gear 62 is movably connected to the upper end of the reaction vessel 3 via a rotating shaft, and the upper end of the second reduction gear 63... The stirring assembly 64 is movably connected to the upper inner wall of the U-shaped plate 5 via a rotating shaft; the stirring assembly 64 includes a movable rod 641, a first rotating rod 642 fixedly connected to the lower end of the movable rod 641, two spiral stirring blades 643 fixedly connected to the upper and lower parts of the outer surface of the first rotating rod 642, several flat stirring blades 644 fixedly connected to the middle part of the outer surface of the first rotating rod 642, a second rotating rod 645 fixedly connected to the lower end of the first rotating rod 642, and three conical stirring blades 646 fixedly connected to the outer surface of the second rotating rod 645. Each of the three connecting rods 647 is fixedly connected to one end near the center of the second rotating rod 645, and the ends of the three connecting rods 647 near the center of the second rotating rod 645 are fixedly connected to the outer surface of the second rotating rod 645; the upper end of the movable rod 641 is fixedly connected to the lower end of the second reduction gear 63, and the lower end of the movable rod 641 is movably connected to the upper end of the reaction vessel 3 through a bearing; the structures of the three conical stirring blades 646 are adapted to the lower conical structure of the reaction vessel 3, and the three spiral stirring blades 643 and the three conical stirring blades 646 are all flush with the inner wall surface of the reaction vessel 3. In the gap; the feeding assembly 4 includes a Y-shaped feed pipe 41, a third switch valve 42 is movably installed on the outer surface of the Y-shaped feed pipe 41, a filter grid 43 is movably sleeved inside the Y-shaped feed pipe 41, a sealing cover 44 is movably sleeved on the upper end of the Y-shaped feed pipe 41, a leachate feed pipe 45 is fixedly connected to the upper left part of the sealing cover 44, a fourth switch valve 46 is movably installed on the outer surface of the leachate feed pipe 45, an alkali addition pipe 47 is fixedly connected to the upper right part of the sealing cover 44, and the lower end of the Y-shaped feed pipe 41 is fixedly connected to the upper end of the reaction vessel 3.
[0026] It should be noted that this utility model is a reaction device for ammonium nitrogen treatment of phosphogypsum leachate. In use, first open the fourth switch valve 46 on the outer surface of the leachate inlet pipe 45 at the upper end of the sealing cap 44 in the feeding assembly 4 and the third switch valve 42 on the outer surface of the Y-type inlet pipe 41. The phosphogypsum leachate is then introduced into the reaction tank 3 through the leachate inlet pipe 45 and the Y-type inlet pipe 41. Simultaneously, alkali solution is added into the reaction tank 3 through the alkali addition pipe 47 at the upper end of the sealing cap 44. The filter grid 43 inside the Y-type inlet pipe 41 filters large particulate impurities in the leachate. After the liquid level in the reaction tank 3 reaches the preset height, close the fourth switch valve 46 and the third switch valve 42. Then, start the servo motor 61 in the control mechanism 6. The output end of the servo motor 61 drives the first reduction gear 62 to rotate, and the first reduction gear 62 drives the meshing second reduction gear 63 to rotate. The second reduction gear 63 drives the stirring assembly 64 fixedly connected to the lower end to rotate. The movable rod 641 in the stirring assembly 64 drives the first rotating rod 642 to rotate. The first rotating rod 642 drives the two spiral stirring blades 643 and several flat stirring blades 644 on the outer surface to rotate. At the same time, the first rotating rod 642 drives the second rotating rod 645 at the lower end to rotate. The second rotating rod 645 drives the three conical stirring blades 646 on the outer surface to rotate, so as to fully stir and mix the leachate and alkali solution at different positions in the reaction tank 3. The gas generated during the reaction is discharged through the gas outlet pipe 7 at the upper right end of the reaction tank 3. The exhaust rate can be controlled by opening the first switch valve 8 on the outer surface of the gas outlet pipe 7. After the reaction is completed, the servo motor 61 and the first switch valve 8 are turned off, and the second switch valve 10 on the outer surface of the discharge pipe 9 at the lower end of the reaction tank 3 is opened to discharge the mixed liquid after the reaction through the discharge pipe 9.
[0027] 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 illustrative of the principles of this 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 claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A reaction apparatus for treating ammonium nitrogen in phosphogypsum leachate, comprising a fixing ring (1), characterized in that: The lower end of the fixed ring (1) is fixedly connected to three support rods (2). The fixed ring (1) is fixedly sleeved with a reaction tank (3). The upper left part of the reaction tank (3) is fixedly connected to a feeding assembly (4). The upper middle part of the reaction tank (3) is fixedly connected to a U-shaped plate (5). The upper end of the U-shaped plate (5) is installed with a control mechanism (6). The upper right part of the reaction tank (3) is fixedly connected to an outlet pipe (7). The outer surface of the outlet pipe (7) is movably installed with a first switch valve (8). The lower end of the reaction tank (3) is fixedly connected to a discharge pipe (9). The outer surface of the discharge pipe (9) is movably installed with a second switch valve (10). The control mechanism (6) includes a servo motor (61), the output end of which is fixedly mounted with a first reduction gear (62), the outer surface of which is meshed with a second reduction gear (63), the lower end of which is fixedly connected with a stirring assembly (64), the lower end of which is fixedly connected with the upper end of the U-shaped plate (5), and the output end of which penetrates the upper end of the U-shaped plate (5) and extends into the U-shaped plate (5).
2. The reaction apparatus for treating ammonium nitrogen in phosphogypsum leachate according to claim 1, characterized in that: The lower end of the first reduction gear (62) is movably connected to the upper end of the reaction vessel (3) via a rotating shaft, and the upper end of the second reduction gear (63) is movably connected to the upper inner wall of the U-shaped plate (5) via a rotating shaft.
3. The reaction apparatus for treating ammonium nitrogen in phosphogypsum leachate according to claim 1, characterized in that: The stirring assembly (64) includes a movable rod (641), the lower end of which is fixedly connected to a first rotating rod (642). The upper and lower outer surfaces of the first rotating rod (642) are fixedly connected to two spiral stirring blades (643). The middle outer surface of the first rotating rod (642) is fixedly connected to several flat stirring blades (644). The lower end of the first rotating rod (642) is fixedly connected to a second rotating rod (645). The outer surface of the second rotating rod (645) is fixedly connected to three conical stirring blades (646). The ends of the three conical stirring blades (646) near the center of the second rotating rod (645) are all fixedly connected to connecting rods (647), and the ends of the three connecting rods (647) near the center of the second rotating rod (645) are all fixedly connected to the outer surface of the second rotating rod (645).
4. The reaction apparatus for treating ammonium nitrogen in phosphogypsum leachate according to claim 3, characterized in that: The upper end of the movable rod (641) is fixedly connected to the lower end of the second reduction gear (63), and the lower end of the movable rod (641) is movably connected to the upper end of the reaction vessel (3) through a bearing.
5. The reaction apparatus for treating ammonium nitrogen in phosphogypsum leachate according to claim 3, characterized in that: The structures of the three conical stirring blades (646) are adapted to the lower conical structure of the reaction vessel (3), and the three spiral stirring blades (643) and the three conical stirring blades (646) have gaps with the inner wall surface of the reaction vessel (3).
6. The reaction apparatus for treating ammonium nitrogen in phosphogypsum leachate according to claim 1, characterized in that: The feeding assembly (4) includes a Y-shaped feed pipe (41), a third switch valve (42) is movably installed on the outer surface of the Y-shaped feed pipe (41), a filter grid (43) is movably sleeved inside the Y-shaped feed pipe (41), a sealing cover (44) is movably sleeved on the upper end of the Y-shaped feed pipe (41), a leachate feed pipe (45) is fixedly connected to the upper left part of the sealing cover (44), a fourth switch valve (46) is movably installed on the outer surface of the leachate feed pipe (45), an alkali addition pipe (47) is fixedly connected to the upper right part of the sealing cover (44), and the lower end of the Y-shaped feed pipe (41) is fixedly connected to the upper end of the reaction tank (3).