A heat dissipation reaction kettle for preparing cobalt hydroxide

Abstract

The utility model discloses a kind of heat dissipation reaction kettles for preparing cobalt hydroxide, it is related to the field of reaction kettle, including kettle body and coaxially arranged on the stirring shaft of kettle body, the blade is fixed with the stirring shaft periphery, the kettle body outside is equipped with cooling sandwich, cooling jacket is sleeved on the stirring shaft, the stirring shaft is rotatably connected with cooling jacket fixed on the kettle body, the cooling sandwich and the cooling jacket are all equipped with the medium inlet and outlet for the cooling working substance to go in and out, the cooling sandwich and the cooling jacket are interconnected by pipeline.The cooling sandwich is set on the kettle body outside and cooling jacket is sleeved on the stirring shaft, the cooling sandwich and the cooling jacket are interconnected by pipeline, so that cooling working substance simultaneously cools material from the kettle body outside and inside.This cooling layout greatly enhances the cooling efficiency, effectively solves the overheating problem caused by heat release in the preparation process of cobalt hydroxide, significantly improves the uniformity of temperature control, and ensures the yield of product.

Description

Technical Field

[0001] This utility model relates to the field of reaction vessels, specifically to a heat dissipation reaction vessel for preparing cobalt hydroxide. Background Technology

[0002] Cobalt hydroxide, an important inorganic chemical product, is a light blue or rose-colored powder. It is chemically stable, insoluble in water, slightly amphoteric, and sparingly soluble in strong alkalis, but soluble in acids and ammonium salt solutions. Its main applications include coloring agents in the glass and enamel industries, raw materials for the production of other cobalt compounds, and drying agents for varnishes and coatings.

[0003] Currently, the direct neutralization precipitation method is commonly used in industry to prepare cobalt hydroxide, which involves a precipitation reaction between cobalt salts and sodium hydroxide (or potassium hydroxide). This method has advantages such as a mature process route, high production efficiency, and low cost, making it suitable for large-scale industrial production. However, the preparation of cobalt hydroxide is an exothermic process. When reacting in existing large-scale reactors, the heat cannot be efficiently dissipated in a short time, easily leading to localized heat accumulation. This heat accumulation affects the particle morphology of cobalt hydroxide, ultimately impacting the product yield. Utility Model Content

[0004] This invention provides a heat dissipation reactor for preparing cobalt hydroxide, thereby overcoming the aforementioned technical problems.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows: A heat dissipation reactor for preparing cobalt hydroxide includes a reactor body and a stirring shaft coaxially mounted on the reactor body. The stirring shaft has blades on its outer periphery. The reactor body has a cooling jacket on its outer side, and a cooling sleeve is fitted on the stirring shaft. The stirring shaft is rotatably connected to the cooling sleeve fixed on the reactor body. Both the cooling jacket and the cooling sleeve have inlet and outlet ports for the cooling working fluid. The cooling jacket and the cooling sleeve are interconnected through pipelines.

[0006] Furthermore, a first stirring paddle is fixed at the bottom end of the stirring shaft, and the first stirring paddle is configured to push the material upward along the axial direction of the vessel body when rotating.

[0007] Furthermore, the cooling jacket includes a first jacket disposed on the outside of the vessel body and a second jacket disposed on the outside of the vessel bottom end cap.

[0008] Furthermore, it also includes a hydraulic drive shaft, which includes a rotating shaft and a water wheel and a second stirring paddle fixed at both ends of the rotating shaft. The second stirring paddle is configured to push the material upward along the axial direction of the rotating shaft when it rotates. The rotating shaft is vertically arranged on the inclined surface of the bottom head of the vessel and is rotatably connected to the bottom head of the vessel. The second stirring paddle is located inside the vessel body, and the water wheel is located in the second jacket. The second jacket is provided with a second cooling water inlet and a second cooling water outlet.

[0009] Furthermore, the first interlayer is provided with a spiral flow channel, and the first interlayer is provided with a first cooling water inlet and a first cooling water outlet that communicate with the spiral flow channel.

[0010] Furthermore, the pipeline includes an inlet pipe and a return pipe. One end of the inlet pipe is connected to the cooling jacket, and the other end extends into the cooling sleeve. One end of the return pipe is connected to the cooling sleeve, and the other end extends to the outside of the cooling sleeve.

[0011] Furthermore, the top of the vessel is equipped with a motor for driving the stirring shaft to rotate.

[0012] Furthermore, it also includes a vessel support for supporting the vessel body, wherein the vessel body is provided with multiple supports, and the supports are fixed to the vessel support by bolts.

[0013] Furthermore, the top of the vessel body is provided with radially distributed reinforcing ribs.

[0014] Furthermore, the bottom of the vessel is provided with a discharge port, and a hinged flap that can be flipped open and closed is connected to the discharge port.

[0015] Beneficial Effects: This utility model provides a heat-dissipating reactor for preparing cobalt hydroxide. By setting a cooling jacket on the outside of the reactor body and a cooling sleeve on the stirring shaft, and connecting the cooling jacket and the cooling sleeve through pipelines, the cooling medium can simultaneously cool the material from both the outside and inside of the reactor body, both from the outside to the inside and from the inside to the outside. This cooling layout significantly enhances cooling efficiency, effectively solves the problem of localized overheating caused by exothermic processes during cobalt hydroxide preparation, and significantly improves the uniformity of temperature control, thereby ensuring the yield of the product. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of a heat dissipation reactor for preparing cobalt hydroxide disclosed in this utility model; Figure 2This is a front view schematic diagram of a heat dissipation reactor for preparing cobalt hydroxide disclosed in this utility model; Figure 3 for Figure 2 AA sectional view; Figure 4 for Figure 2 BB cross-sectional diagram; Figure 5 for Figure 3 Enlarged schematic diagram of part C; Figure 6 This is a top view schematic diagram of a heat dissipation reaction vessel for preparing cobalt hydroxide disclosed in this utility model; Figure 7 for Figure 6 DD cross-sectional view; Figure 8 for Figure 7 Enlarged schematic diagram of part E; Figure 9 This is a bottom view schematic diagram of a heat dissipation reactor for preparing cobalt hydroxide disclosed in this utility model.

[0018] In the diagram: 1. Vessel body; 2. Cooling jacket; 3. Motor; 4. Cooling jacket; 41. First jacket; 411. First cooling water inlet; 412. First cooling water outlet; 42. Second jacket; 421. Second cooling water inlet; 422. Second cooling water outlet; 5. Stirring shaft; 6. Cylinder; 7. First stirring paddle; 8. Hydraulic drive shaft; 81. Rotating shaft; 82. Second stirring paddle; 83. Water wheel; 9. Reinforcing rib; 10. Bottom end cap; 11. Water inlet pipe; 12. Water return pipe; 13. Vessel body support; 14. Support; 15. Flip plate. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0020] This embodiment provides a heat-dissipating reaction vessel for preparing cobalt hydroxide, such as... Figures 1 to 9 As shown, it includes a vessel body 1 and a stirring shaft 5 coaxially mounted on the vessel body 1, as follows: Figure 3As shown, blades are fixed to the outer periphery of the stirring shaft 5, and a cooling jacket 4 is fixed to the outer side of the vessel body 1. A cooling sleeve 2 is fitted on the stirring shaft 5. The stirring shaft 5 and the cooling sleeve 2 fixed on the vessel body 1 are rotatably connected by bearings. In this embodiment, a mechanical seal can be provided between the cooling sleeve 2 and the stirring shaft 5 to prevent material leakage. Both the cooling jacket 4 and the cooling sleeve 2 are provided with medium inlets and outlets for the cooling working fluid. The cooling jacket 4 and the cooling sleeve 2 are interconnected by pipelines, which facilitates centralized control of the cooling working fluid, reduces the number of valve interfaces connected to the external water supply system, reduces manufacturing costs, and improves the economic efficiency of equipment operation.

[0021] This embodiment provides a heat-dissipating reactor for preparing cobalt hydroxide. By providing a cooling jacket 4 on the outside of the reactor body 1 and a cooling sleeve 2 fitted onto the stirring shaft 5, and connecting the cooling jacket 4 and the cooling sleeve 2 via pipelines, the cooling medium can be simultaneously cooled from both the outside and inside of the reactor body, achieving both outward and inward cooling. This cooling layout significantly enhances cooling efficiency, effectively solves the problem of localized overheating caused by exothermic processes during cobalt hydroxide preparation, and significantly improves the uniformity of temperature control, thereby ensuring a high product yield.

[0022] Preferably, such as Figure 7 As shown, a first stirring blade 7 is fixedly provided at the bottom end of the stirring shaft 5. The first stirring blade 7 is configured to push the material upward along the axial direction of the vessel body 1 when rotating. This can be achieved by adjusting parameters such as the rotation direction and tilt angle of the blade structure. The blades conventionally set on the stirring shaft 5 have a limited range of action, and a stirring dead zone is easily formed at the bottom of the vessel body 1. The material is stuck here and cannot participate in the overall circulation, which will cause local material concentration differences and ultimately affect product quality. However, by adding a first stirring blade 7 at the bottom end of the stirring shaft 5, the material at the bottom of the vessel body 1 can be guided to move upward along the axial direction of the vessel body 1 and participate in material circulation. This can alleviate the problem to a certain extent, improve the material flowability, prevent material accumulation at the bottom of the vessel body 1, and improve the heat exchange effect and mixing uniformity of the material at the bottom of the vessel body 1.

[0023] Specifically, such as Figure 3 and Figure 7 As shown, the cooling jacket 4 includes a first jacket 41 fixed to the outside of the cylinder 6 of the vessel body 1 and a second jacket 42 fixed to the outside of the bottom end cap 10 of the vessel body 1. The first jacket 41 and the second jacket 42 can be manufactured and installed separately, which can reduce the manufacturing difficulty and reduce the cost of subsequent separate inspection and maintenance of the jacket.

[0024] Preferably, such as Figure 3 , Figure 4 and Figure 7 As shown, it also includes a hydraulic drive shaft 8, such as Figure 5As shown, the hydraulic drive shaft 8 includes a rotating shaft 81 and a water wheel 83 and a second stirring paddle 82 fixed at both ends of the rotating shaft 81. The second stirring paddle 82 is configured to push the material upward along the axial direction of the rotating shaft 81 when rotating. In this embodiment, the blade shape of the second stirring paddle 82 is similar to that of the first stirring paddle 7, which can push the material upward. By setting the rotating shaft 81 on which the second stirring paddle 82 is fixed to be inclined relative to the axial direction of the vessel 1, the second stirring paddle 82 can push the material upward at an incline when rotating. The purpose of setting the second stirring paddle 82 is similar to that of the first stirring paddle 7, which is to avoid the formation of a stirring dead zone at the bottom of the vessel 1, guide the material to flow upward along the inclined direction to the center of the vessel 1 to participate in the material circulation, improve the material flowability, promote the material to move towards the central area, avoid the accumulation of material at the bottom, make the material easier to enter the heat-affected zone of the cooling jacket 2, prevent the accumulation of material at the bottom of the vessel 1, and improve the heat exchange effect and mixing uniformity of the material at the bottom of the vessel 1. like Figure 5 As shown, the rotating shaft 81 is vertically arranged on the inclined surface of the bottom end cap 10 and is rotatably connected to the bottom end cap 10 via a bearing. In this embodiment, a mechanical seal can be provided between the rotating shaft 81 and the bottom end cap 10 to prevent material leakage. The second stirring paddle 82 is located inside the vessel body 1, and the water wheel 83 is located inside the second interlayer 42. Figure 9 As shown, the second interlayer 42 is provided with a second cooling water inlet 421 and a second cooling water outlet 422; The second cooling water inlet 421 and the second cooling water outlet 422 are the medium inlets and outlets for the cooling working medium on the second jacket 42. The cooling working medium is used to cool the materials and also serves as the power fluid to drive the water turbine 83 to rotate, so that the reactor can drive the second stirring paddle 82 to operate without the need for an additional motor.

[0025] Specifically, the first interlayer 41 is provided with a spiral flow channel that rises upwards, and the first interlayer 41 is provided with a first cooling water inlet 411 and a first cooling water outlet 412 that connect the spiral flow channel, such as... Figure 2 The first cooling water inlet 411 shown and as Figure 9 The first cooling water outlet 412 shown is the medium inlet and outlet for the cooling working medium on the first interlayer 41. After the cooling working medium enters the spiral flow channel from the first cooling water inlet 411, it flows spirally upward and is discharged from the first cooling water outlet 412. The spiral flow channel can form a longer heat exchange path in a limited space, which significantly increases the contact time and contact area between the cooling working medium and the cooled vessel 1. Under the same flow rate, the cooling working medium can absorb heat more fully and improve the heat exchange efficiency.

[0026] Specifically, such as Figure 2As shown, the pipeline includes an inlet pipe 11 and a return pipe 12. One end of the inlet pipe 11 is connected to the cooling jacket 4, as shown. Figure 8 As shown, the other end extends into the cooling jacket 2; one end of the return water pipe 12 is connected to the cooling jacket 2, and the other end extends to the outside of the cooling jacket 2.

[0027] The first interlayer 41 and the second interlayer 42 can be configured as independent cavities or connected by a flexible hose. In this embodiment, to ensure the rotational speed of the water turbine 83, no flexible hose is provided between the second cooling water outlet 422 of the second interlayer 42 and the first cooling water inlet 411 of the first interlayer 41. After heat exchange, the cooling water in the second interlayer 42 is directly discharged from the second cooling water outlet 422 and returned to the external water supply system, thereby ensuring the water pressure and flow rate required by the water turbine 83.

[0028] In this embodiment, the cooling medium is water, and the flow process of the cooling medium is as follows: the external water supply system is connected to the first cooling water inlet 411 and the second cooling water inlet 421 through two hoses, thereby supplying cooling water to the first jacket 41 and the second jacket 42 respectively. The cooling water in the second jacket 42 returns to the water supply system from the second cooling water outlet 422, while the cooling water in the first jacket 41 flows through a spiral channel and is discharged from the first cooling water outlet 412 into the water inlet pipe 11, then flows into the cooling jacket 2, and finally returns to the water supply system from the cooling jacket 2 through the return water pipe 12, completing the circulation of the cooling medium.

[0029] Specifically, such as Figure 1 As shown, the top of the vessel body 1 is provided with a motor 3 for driving the stirring shaft 5 to rotate. In this embodiment, the motor 3 is connected to the stirring shaft 5 through a coupling, thereby driving the stirring shaft 5 to rotate.

[0030] Specifically, it also includes a vessel support 13 for supporting the vessel body 1. Multiple supports 14 are fixed on the outer periphery of the vessel body 1 to avoid local stress concentration, suppress the shaking of the vessel body 1, and provide a rigid foundation for stirring. The multiple supports 14 are fixed to the vessel support 13 by bolts, which facilitates disassembly and makes it easy to hoist the vessel body 1 as a whole and carry out subsequent maintenance.

[0031] Specifically, such as Figure 6 As shown, the top of the vessel body 1 is provided with radially distributed reinforcing ribs 9 to enhance the structural strength of the top of the vessel body 1.

[0032] Specifically, such as Figure 2 As shown, the bottom of the vessel body 1 is provided with a discharge port, and a flip-open and closeable flap 15 is hinged at the discharge port of the vessel body 1 to realize the rapid discharge of materials; the feeding port is not shown in the figure, but can be set at the top of the vessel body 1.

Claims

1. A heat-dissipating reactor for preparing cobalt hydroxide, comprising a reactor body (1) and a stirring shaft (5) coaxially disposed on the reactor body (1), wherein the stirring shaft (5) is provided with blades on its outer periphery, characterized in that, The outer side of the vessel body (1) is provided with a cooling jacket (4), and a cooling sleeve (2) is fitted on the stirring shaft (5). The stirring shaft (5) is rotatably connected to the cooling sleeve (2) fixed on the vessel body (1). Both the cooling jacket (4) and the cooling sleeve (2) are provided with medium inlets and outlets for the cooling working medium to enter and exit. The cooling jacket (4) and the cooling sleeve (2) are interconnected through pipelines. The cooling jacket (4) includes a first jacket (41) fixed to the outside of the cylinder (6) of the vessel body (1) and a second jacket (42) fixed to the outside of the bottom end cap (10) of the vessel body (1). It also includes a hydraulic drive shaft (8), which includes a rotating shaft (81) and a water wheel (83) and a second stirring paddle (82) fixed at both ends of the rotating shaft (81). The second stirring paddle (82) is configured to push the material upward along the axis of the rotating shaft (81) when rotating. The rotating shaft (81) is vertically set on the inclined surface of the bottom end cap (10) and is rotatably connected to the bottom end cap (10) through a bearing. The second stirring paddle (82) is located inside the vessel body (1). The water wheel (83) is located inside the second interlayer (42). The second interlayer (42) is provided with a second cooling water inlet (421) and a second cooling water outlet (422).

2. The heat-dissipating reaction vessel for preparing cobalt hydroxide according to claim 1, characterized in that, The bottom end of the stirring shaft (5) is fixed with a first stirring paddle (7), which is configured to push the material upward along the axial direction of the vessel body (1) when rotating.

3. The heat-dissipating reaction vessel for preparing cobalt hydroxide according to claim 1, characterized in that, The first interlayer (41) is provided with a spiral flow channel that rises spirally, and the first interlayer (41) is provided with a first cooling water inlet (411) and a first cooling water outlet (412) that connect the spiral flow channel.

4. The heat-dissipating reaction vessel for preparing cobalt hydroxide according to claim 1, characterized in that, The pipeline includes an inlet pipe (11) and a return pipe (12). One end of the inlet pipe (11) is connected to the cooling jacket (4), and the other end extends into the cooling sleeve (2). One end of the return pipe (12) is connected to the cooling sleeve (2), and the other end extends to the outside of the cooling sleeve (2).

5. The heat-dissipating reaction vessel for preparing cobalt hydroxide according to claim 1, characterized in that, The top of the vessel body (1) is equipped with a motor (3) for driving the stirring shaft (5) to rotate.

6. The heat-dissipating reaction vessel for preparing cobalt hydroxide according to claim 1, characterized in that, It also includes a vessel support (13) for supporting the vessel body (1), and a plurality of supports (14) are fixed on the vessel body (1), the supports (14) being fixed to the vessel support (13) by bolts.

7. The heat-dissipating reaction vessel for preparing cobalt hydroxide according to claim 1, characterized in that, The top of the vessel body (1) is provided with radially distributed reinforcing ribs (9).

8. The heat-dissipating reaction vessel for preparing cobalt hydroxide according to claim 1, characterized in that, The bottom of the vessel body (1) is provided with a discharge port, and a flip-top flap (15) is hinged at the discharge port.

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