A settling reactor in the production process of cerium purification

Abstract

The utility model discloses a kind of sedimentation reaction kettles in cerium purification production process, belong to cerium production field, including jar body, rotation setting in jar body's rotating shaft, stirring structure and the driving device of driving rotating shaft rotation, stirring structure is installed on rotating shaft, the top of jar body is provided with feed inlet, precipitant adding port and exhaust port, the bottom of jar body is provided with discharge port, still include defoaming structure, defoaming structure is installed on rotating shaft, located the above of stirring structure;The inner wall of the jar body is installed with four strip blocks parallel with rotating shaft, four strip blocks are evenly distributed on the inner wall of jar body, every strip block extends from the kettle bottom of jar body to liquid level.The utility model solves froth overflow phenomenon using physical method, and improves the homogeneity in reaction kettle, improves yield.

Description

Technical Field

[0001] This utility model relates to the field of cerium production, and more specifically, to a settling reactor in the cerium purification production process. Background Technology

[0002] In the precipitation process of cerium purification, as the precipitant (such as hydrogen peroxide) is continuously added to the settling reactor, foam increases, sometimes leading to overflow. Severe overflow necessitates production shutdown and site cleanup. Even in milder cases, the foam flows out through the overflow pipe, reducing yield and economic efficiency because it contains reactants and products. Existing methods to eliminate overflow include adding defoamers, but this disrupts the reactant balance within the reactor, affecting product conversion and reducing purity. Therefore, physical methods to address overflow have become a key industry goal. Utility Model Content

[0003] To address the aforementioned problems, this utility model provides a settling reactor for the cerium purification production process, which aims to improve at least one of the problems mentioned in the background art.

[0004] A sedimentation reactor for cerium purification production includes a tank body, a rotating shaft rotatably disposed within the tank body, a stirring structure, and a drive device for driving the rotating shaft to rotate. The stirring structure is mounted on the rotating shaft. The top of the tank body is provided with a feed inlet, a precipitant inlet, and an exhaust port, and the bottom of the tank body is provided with a discharge port. It also includes a defoaming structure, which is mounted on the rotating shaft and located above the stirring structure. Four strip-shaped blocks parallel to the rotating shaft are installed on the inner wall of the tank body. The four strip-shaped blocks are evenly distributed on the inner wall of the tank body, and each strip-shaped block extends from the bottom of the tank body to the liquid surface.

[0005] Optionally, the defoaming structure is a disc with a plurality of through holes evenly distributed on it.

[0006] Optionally, the diameter of the through hole is 1 mm to 5 mm, and the opening ratio is 40% to 60%.

[0007] Optionally, the stirring structure consists of two pairs of helical blades mounted on a rotating shaft.

[0008] Optionally, the width of each strip block is 1 / 10 to 1 / 12 of the inner diameter of the tank, the thickness is 6mm to 12mm, and the shortest distance between the strip block and the stirring structure is not less than 10mm.

[0009] Optionally, each strip block has protrusions evenly distributed on the side facing the stirring structure.

[0010] Optionally, the thickness of the protrusion is 1mm to 2mm, and the distance between two adjacent protrusions is 20mm to 50mm.

[0011] Optionally, the highest point of the defoaming structure is located 10 cm to 30 cm above the static liquid surface.

[0012] Optionally, the defoaming structure is inclined to the horizontal plane at an angle of 5° to 15°.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention uses a physical method to solve the foaming problem, and improves the uniformity within the reactor, thereby increasing the yield. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of the utility model; Figure 2 This is a schematic diagram of the defoaming structure of this utility model; Figure 3 yes Figure 1 Enlarged view of point A.

[0016] Explanation of reference numerals in the attached drawings: 1. Tank body, 2. Rotating shaft, 3. Stirring structure, 4. Drive device, 5. Feed inlet, 6. Sediment addition port, 7. Exhaust port, 8. Discharge port, 9. Defoaming structure, 10. Through hole, 11. Overflow hole, 12. Strip block, 13. Protrusion. Detailed Implementation

[0017] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0018] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are 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, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, "a plurality of" means two or more, unless otherwise precisely specified.

[0019] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a particular order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] The technical solution of this utility model will be described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

[0022] Please refer to Figures 1-3 , Figure 1 This is a schematic diagram of the overall structure of this utility model. Figure 2 This is a schematic diagram of the defoaming structure of this utility model. Figure 3 yes Figure 1 Enlarged view of point A.

[0023] A sedimentation reactor for cerium purification production includes a tank body 1, a rotating shaft 2 rotatably disposed within the tank body 1, a stirring structure 3, and a driving device 4 for driving the rotating shaft 2 to rotate. The stirring structure 3 is mounted on the rotating shaft 2. The top of the tank body 1 is provided with a feed inlet 5, a precipitant inlet 6, and an exhaust port 7. The bottom of the tank body 1 is provided with a discharge port 8. The sedimentation reactor for cerium purification production also includes a defoaming structure 9, which is located above the stirring structure 3 and mounted on the rotating shaft 2.

[0024] In one or more specific embodiments of this utility model, the defoaming structure 9 is a disc with a plurality of through holes 10 evenly distributed on the disc.

[0025] During operation, as the precipitant is gradually added, more and more foam is generated. Because the foam is relatively light in the reactor, it gradually floats to the surface of the liquid. Since the defoaming structure 9 is a rotating disk with holes, when the foam passes through the through hole 10, it is divided into small bubbles. The increased surface area causes the liquid film to rupture, thereby eliminating the foam.

[0026] In one or more specific embodiments of this utility model, in order to obtain a better defoaming effect, the pore diameter of the through hole 10 is 1 mm to 5 mm, and the opening rate is 40% to 60%.

[0027] In one or more specific embodiments of this utility model, for the reaction material system, in order to obtain a better homogenization effect, the stirring structure 3 consists of two pairs of helical blades, which are mounted on the rotating shaft 2. When the two pairs of helical blades are working in the reactor, they push the material to circulate up and down along the helical direction. In the area near the reactor wall, the helical blades lift the material from the bottom of the reactor upwards, while in the central area, the material naturally sinks under the influence of gravity, forming a global circulation. Solid particles are continuously lifted up and cannot settle at the bottom of the reactor, thus eliminating the particle deposition zone near the wall.

[0028] In one or more specific embodiments of this utility model, for the reaction material system, in order to further obtain a better homogenization effect, four strip-shaped blocks 12 parallel to the rotating shaft 2 are installed on the inner wall of the tank 1. The four strip-shaped blocks 12 are evenly distributed on the inner wall of the tank 1, and each strip-shaped block 12 extends from the bottom of the tank 1 to the liquid surface. During operation, the strip-shaped blocks 12 directly cut off the tangential flow of the liquid, forcing the fluid to change direction, enhancing turbulence. After the fluid hits the baffle, some of the fluid moves upward (closer to the liquid surface), and some of the fluid moves downward (closer to the bottom of the tank). The sinking particles are re-lifted by the upward flow, avoiding sedimentation, preventing the formation of a central vortex in the liquid, and improving the mixing effect. After the strip-shaped blocks 12 are installed, eddies and gas entrainment are reduced, thereby reducing the amount of foam in the system.

[0029] In one or more specific embodiments of this utility model, for the reaction material system, in order to further obtain a better homogenization effect, the width of the strip block 12 is 1 / 10 to 1 / 12 of the inner diameter of the tank body 1, the thickness is 6mm to 12mm, and the shortest distance between the strip block 12 and the stirring structure 3 is not less than 10mm.

[0030] In one or more specific embodiments of this utility model, each strip block 12 is uniformly provided with protrusions 13 on the side facing the stirring structure 3. The protrusions 13 make the side facing the stirring structure 3 have a concave-convex structure. The protrusions 13 generate micro-vortices by changing the flow field and boundary layer characteristics, thereby improving the particle suspension ability, reducing particles, generating uneven stress on the foam film, promoting rupture, breaking up large bubbles into small bubbles, and reducing foam accumulation.

[0031] In one or more specific embodiments of this utility model, the thickness of the protrusion 13 is 1mm to 2mm, and the distance between two adjacent protrusions 13 is 20mm to 50mm.

[0032] In one or more specific embodiments of this utility model, in order to obtain a better overall effect, the highest point of the defoaming structure 9 is located 10 cm to 30 cm above the static liquid surface.

[0033] In one or more specific embodiments of this utility model, in order to prevent the through hole 10 from being blocked and to more effectively intercept foam, the defoaming structure 9 is inclined to the horizontal plane in this reaction system, with an inclination angle of 5° to 15°. Within this range, on the one hand, the foam interception efficiency and the passability of solid particles can be balanced, and on the other hand, when the foam rises, it spreads along the inclined surface of the grid, increasing the contact area and making it easier to break. The inclined through hole 10 guides the foam to the high shear zone of the stirring, enhancing the crushing effect.

[0034] In one or more specific embodiments of this utility model, in order to prevent foaming from causing production to stop, an overflow hole 11 is provided above the liquid surface of the tank 1.

[0035] In one or more specific embodiments of this utility model, the driving device 4 is a motor, and the motor is connected to the rotating shaft 2 through a coupling.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A settling reactor for cerium purification production, comprising a tank body (1), a rotating shaft (2) rotatably disposed within the tank body (1), a stirring structure (3), and a driving device (4) for driving the rotating shaft (2) to rotate, wherein the stirring structure (3) is mounted on the rotating shaft (2), the top of the tank body (1) is provided with a feed inlet (5), a precipitant inlet (6), and an exhaust outlet (7), and the bottom of the tank body (1) is provided with an outlet (8), characterized in that, It also includes a defoaming structure (9), which is installed on the rotating shaft (2) and located above the stirring structure (3); The inner wall of the tank (1) is equipped with four strip blocks (12) parallel to the rotating shaft (2). The four strip blocks (12) are evenly distributed on the inner wall of the tank (1), and each strip block (12) extends from the bottom of the tank (1) to the liquid surface.

2. The settling reactor in the cerium purification process according to claim 1, characterized in that, The defoaming structure (9) is a disc with several through holes (10) evenly distributed on it.

3. The settling reactor in the cerium purification production process according to claim 2, characterized in that, The diameter of the through hole (10) is 1 mm to 5 mm, and the opening rate is 40% to 60%.

4. The settling reactor in the cerium purification production process according to claim 2, characterized in that, The stirring structure (3) consists of two pairs of helical blades, which are mounted on the rotating shaft (2).

5. The settling reactor in the cerium purification production process according to claim 1, characterized in that, The width of each strip block (12) is 1 / 10 to 1 / 12 of the inner diameter of the tank body (1), and the thickness is 6mm to 12mm. The shortest distance between the strip block (12) and the stirring structure (3) is not less than 10mm.

6. The settling reactor in the cerium purification production process according to claim 1, characterized in that, Each strip block (12) has protrusions (13) evenly arranged on the side facing the stirring structure (3).

7. The settling reactor in the cerium purification production process according to claim 6, characterized in that, The thickness of the protrusion (13) is 1mm to 2mm, and the distance between two adjacent protrusions (13) is 20mm to 50mm.

8. The settling reactor in the cerium purification production process according to any one of claims 1 to 7, characterized in that, The highest point of the defoaming structure (9) is located 10 cm to 30 cm above the static liquid surface.

9. The settling reactor in the cerium purification production process according to any one of claims 1 to 7, characterized in that, The defoaming structure (9) is inclined to the horizontal plane at an angle of 5° to 15°.

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