Air-cooled chemical crystallization kettle

Abstract

The utility model discloses an air-cooled chemical crystallization kettle which comprises a crystallization kettle main body, an interlayer is arranged in the crystallization kettle main body, a heat exchange pipe is arranged in the interlayer, the heat exchange pipe is a spiral flat pipe and is tightly attached to the side, close to the inner wall of the crystallization kettle main body, of the interlayer, and the heat exchange pipe is communicated with an outer circulation assembly. A heat exchange assembly is also arranged in the crystallization kettle main body and comprises a vertical pipe positioned in the crystallization kettle main body. According to the crystallization kettle disclosed by the utility model, the heat exchange assembly is arranged, after a gaseous refrigerant is matched with the heat exchange pipe to cool the inner wall of the crystallization kettle main body, the gaseous refrigerant of which the temperature is increased enters the heat exchange assembly through the transverse pipe, and heat exchange is easily performed between the transverse pipe and the vertical pipe and the inside of the crystallization kettle main body, so that the temperature of a solution in the crystallization kettle is reduced; moreover, the backflow gaseous refrigerant can also drive the stirring assembly to operate, so that the solution in the center flows towards the inner wall of the crystallization kettle main body, and the crystallization effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical production equipment, in particular to an air-cooled chemical crystallization kettle. Background Art

[0002] A crystallization kettle is a crystallization device that requires rapid cooling of chilled water or other refrigerants in the interlayer after the material is mixed and reacted. The key link lies in the size of the interlayer area, the structural form of the stirrer, the form of the material outlet, high-precision polishing inside the tank, and the requirement of no dead angle for cleaning inside the tank to meet the process use conditions. An air-cooled chemical crystallization kettle uses low-temperature gas as the refrigerant. The air-cooled chemical crystallization kettle will conduct heat exchange through a cooler outside the crystallization kettle. The heat exchange area is not limited by the crystallizer, the heat transfer coefficient is large, and continuous operation is easy to achieve.

[0003] In the air-cooled chemical crystallization kettle disclosed in the utility model patent CN221014567U of China, a method of directly inputting gas into the crystallization kettle is adopted for cooling. However, this method has a great impact on the pressure inside the crystallization kettle, easily affects the chemical reaction inside the crystallization kettle, also increases the variables in chemical production, makes it difficult to control the product quality, and cannot meet the requirements of chemical production. Therefore, we propose an air-cooled chemical crystallization kettle to solve the above problems. Content of the Utility Model

[0004] The purpose of the utility model is to solve the problems existing in the prior art, and to propose an air-cooled chemical crystallization kettle.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] An air-cooled chemical crystallization kettle, comprising a crystallization kettle main body. A interlayer is arranged inside the crystallization kettle main body, and heat exchange tubes are arranged inside the interlayer. The heat exchange tubes are communicated with an external circulation assembly, and a heat exchange assembly is also arranged inside the crystallization kettle main body;

[0007] The heat exchange assembly includes a vertical tube located inside the crystallization kettle main body. A plurality of stirring assemblies are arranged on the vertical tube. A plurality of horizontal tubes are also fixedly connected to the vertical tube. Both ends of the horizontal tube are communicated with the stirring assembly and the heat exchange tube respectively. A return air pipe is arranged at the upper end of the vertical tube, and the return air pipe is communicated with the external circulation assembly.

[0008] Preferably, the stirring assembly includes an inner tube communicated with the horizontal tube. The inner tube is communicated with a connector. The connector is fixedly connected to the inner wall of the vertical tube. An outer ring is rotatably connected to the connector, and the outer ring is slidably connected to the vertical tube. Stirring rods are fixedly connected to the outer ring. A plurality of inclined blades are fixedly connected to the inner wall of the outer ring. An air outlet pipe is also communicated with the upper end of the connector, and the air outlet pipe is communicated with the return air pipe.

[0009] Preferably, the outer circulation component includes a cooling device, a centrifugal pump is arranged on the cooling device, and the centrifugal pump is communicated with the heat exchange tube through a pipeline, and the return air pipe is communicated with the cooling device.

[0010] Preferably, a check valve is arranged on the return air pipe, an air inlet pipe is communicated with the side wall of the return air pipe near the check valve, the air inlet pipe is communicated with a compressor, and an electric control valve is arranged on the pipeline.

[0011] Preferably, a heating device is arranged on the air inlet pipe.

[0012] Preferably, the electric control valve is a three-way valve, and the electric control valve is also communicated with a gas collecting pipe.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. In the present utility model, by arranging a heat exchange component, after cooling the inner wall of the crystallization kettle body with gaseous refrigerant in cooperation with the heat exchange tube, the gaseous refrigerant with increased temperature enters the heat exchange component through the horizontal tube, and heat exchange is carried out with the solution in the crystallization kettle body by using the horizontal tube and the vertical tube, so as to reduce the temperature of the solution in the crystallization kettle, and the reflux gaseous refrigerant can also drive the stirring component to operate, thereby making the solution at the center flow towards the inner wall of the crystallization kettle body, improving the crystallization effect;

[0015] 2. In the present utility model, by arranging the air inlet pipe in cooperation with the compressor, before the cooling crystallization link, the stirring component can be driven to operate by high-pressure air, so as to achieve the effect of mixing the materials in the crystallization kettle. On the other hand, high-temperature and high-pressure air can be adopted, and the solution in the crystallization kettle can be heated by using the vertical tube, the horizontal tube and the heat exchange tube, improving the reaction efficiency and achieving the purpose of dual use of one thing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic cross-sectional structure view of an air-cooled chemical crystallization kettle proposed by the present utility model;

[0017] Figure 2 is a schematic structure view of the stirring component of an air-cooled chemical crystallization kettle proposed by the present utility model;

[0018] Figure 3 is a schematic partial structure view of an air-cooled chemical crystallization kettle proposed by the present utility model.

[0019] In the figure: 1. Crystallization kettle body; 2. Heat exchange tube; 3. Vertical tube; 4. Horizontal tube; 5. Return air pipe; 6. Inner tube; 7. Connector; 8. Outer ring; 9. Stirring rod; 10. Blade; 11. Centrifugal pump; 12. Check valve; 13. Air inlet pipe; 14. Electric control valve; 15. Gas collecting pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] Next, in combination with the accompanying drawings in the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0021] Refer to Figures 1-3 , an air-cooled chemical crystallization kettle, including a crystallization kettle main body 1, a sandwich is arranged in the crystallization kettle main body 1, and heat exchange tubes 2 are arranged in the sandwich. The heat exchange tubes 2 are spiral flat tubes and are closely attached to one side of the sandwich close to the inner wall of the crystallization kettle main body 1. The heat exchange tubes 2 are communicated with an external circulation component, and a heat exchange component is also arranged in the crystallization kettle main body 1;

[0022] The heat exchange component includes a vertical tube 3 located in the crystallization kettle main body 1. A plurality of stirring components are arranged on the vertical tube 3. A plurality of horizontal tubes 4 are also fixedly connected to the vertical tube 3. Both ends of the horizontal tube 4 are communicated with the stirring component and the heat exchange tube 2 respectively. A return air pipe 5 is arranged at the upper end of the vertical tube 3, and the return air pipe 5 is communicated with the external circulation component;

[0023] In this design, the gaseous refrigerant is transported into the heat exchange tube 2 by the external circulation component. The heat exchange tube 2 is used to reduce the temperature of the inner wall of the crystallization kettle main body 1, so as to form crystals on the inner wall of the crystallization kettle main body 1. At this time, the temperature of the gaseous refrigerant will also rise, and the gaseous refrigerant will flow into the stirring component through the horizontal tube 4, and then flow from the stirring component to the return air pipe 5. During the reflux process of the gaseous refrigerant, it will drive the stirring component to operate, and then drive the solution in the crystallization kettle main body 1 to flow to the inner wall of the crystallization kettle main body 1, so that the components that need to be crystallized at low temperature in the solution flow to the inner wall of the crystallization kettle main body 1. On the other hand, during the reflux process of the gaseous refrigerant, although the temperature of the gaseous refrigerant that has been heat-exchanged has risen, its temperature is still lower than the temperature of the solution in the crystallization kettle main body 1, and heat exchange can still be carried out during the reflux process to reduce the overall temperature of the solution, and the components that need to be crystallized at low temperature will not crystallize on the horizontal tube 4 or the vertical tube 3.

[0024] Furthermore, the stirring component includes an inner tube 6 communicated with the horizontal tube 4. The inner tube 6 is communicated with a connecting head 7. The connecting head 7 is fixedly connected to the inner wall of the vertical tube 3. An outer ring 8 is rotatably connected to the connecting head 7, and the outer ring 8 is slidably connected to the vertical tube 3. Stirring rods 9 are fixedly connected to the outer ring 8. A plurality of inclined blades 10 are fixedly connected to the inner wall of the outer ring 8. An air outlet pipe is also communicated with the upper end of the connecting head 7, and the air outlet pipe is communicated with the return air pipe 5;

[0025] The connector 7 at the bottom is columnar, and the connectors 7 above the connector 7 are all annular. The return air pipe 5 needs to pass through the connector 7, and the horizontal pipe 4 is used not only to transport the gaseous refrigerant to the connector 7, but also to fix the vertical pipe 3 and the connector 7. The return air pipe 5 is arranged inside the vertical pipe 3 and is used to connect multiple connectors 7, and the return air pipe 5 will pass through the columnar connector 7;

[0026] Based on the above design, when cooling is performed using the gaseous refrigerant, the gaseous refrigerant flows toward the connector 7 through the transverse pipe 4, and flows upward in the connector 7. At this time, the gaseous refrigerant cooperates with the blades 10 to drive the outer ring 8 to rotate, thereby causing the stirring component to operate. Subsequently, the gaseous refrigerant flows into the return air pipe 5 through the outlet pipe. More specifically, after the gaseous refrigerant enters the transverse pipe 4, it flows into the connector 7, and then enters the return air pipe 5. In the process of flowing through the connector 7, the outer ring 8 is driven to rotate by the blades 10. A plurality of stirring components are arranged on the vertical pipe 3, wherein the vertical pipe 3 is interrupted, and the vertical pipe 3 in the middle part needs to be fixed by the transverse pipe 4.

[0027] Furthermore, the external circulation component includes a cooling device, the cooling device is provided with a centrifugal pump 11, and the centrifugal pump 11 is connected to the heat exchange pipe 2 through a pipeline, and the return air pipe 5 is connected to the cooling device;

[0028] In this design, the centrifugal pump 11 is used to pressurize the gaseous refrigerant, and the cooling device can adopt the existing technology.

[0029] Furthermore, a one-way valve 12 is provided on the return air pipe 5, and a side wall of the return air pipe 5 close to the one-way valve 12 is connected to an intake pipe 13, the intake pipe 13 is connected to a compressor, and an electric control valve 14 is provided on the pipe;

[0030] In this design, by setting a one-way valve 12 to cooperate with the air intake pipe 13 and the compressor, the user can use the compressor to compress the air and then let it pass through the air intake pipe 13 and then return to the air pipe 5 to flow upward and downward, so that the high-pressure air drives the stirring component to operate, and then achieves the effect of improving the mixing and reaction of the solution in the crystallization kettle body 1 by using the stirring component, which is suitable for the reaction operation before the crystallization operation, and the electric control valve 14 is set to prevent the high-pressure air from entering the external circulation component, but to discharge the high-pressure air to the outside at this time.

[0031] Furthermore, a heating device is provided on the air inlet pipe 13, and the heating device can heat the air delivered to the crystallization kettle body 1 through the compressor, thereby achieving the purpose of quickly heating the temperature of the solution in the crystallization kettle body 1;

[0032] Furthermore, the electric control valve 14 is a three-way valve, and the electric control valve 14 is also connected to a gas collecting pipe 15. When heating the solution with high-temperature air, the high-temperature air needs to be collected by the gas collecting pipe 15 and circulated to avoid heat waste.

[0033] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, making equivalent substitutions or changes, should be covered by the protection scope of the present invention.

Claims

1. An air-cooled chemical crystallization kettle, comprising a crystallization kettle main body (1), characterized in that, A jacket is provided inside the crystallization kettle body (1), and heat exchange tubes (2) are provided inside the jacket. The heat exchange tubes (2) are communicated with an external circulation assembly, and a heat exchange assembly is further provided inside the crystallization kettle body (1). The heat exchange assembly includes a vertical tube (3) located inside the crystallization kettle body (1). A plurality of stirring assemblies are provided on the vertical tube (3). A plurality of horizontal tubes (4) are fixedly connected to the vertical tube (3). The two ends of the horizontal tube (4) are respectively communicated with the stirring assembly and the heat exchange tube (2). A return air pipe (5) is provided at the upper end of the vertical tube (3), and the return air pipe (5) is communicated with the external circulation assembly.

2. The air-cooled chemical crystallization kettle according to claim 1, wherein The stirring assembly includes an inner tube (6) communicated with the horizontal tube (4). The inner tube (6) is communicated with a connector (7). The connector (7) is fixedly connected to the inner wall of the vertical tube (3). An outer ring (8) is rotatably connected to the connector (7), and the outer ring (8) is slidably connected to the vertical tube (3). Stirring rods (9) are fixedly connected to the outer ring (8). A plurality of inclined blades (10) are fixedly connected to the inner wall of the outer ring (8). An air outlet pipe is further communicated with the upper end of the connector (7), and the air outlet pipe is communicated with the return air pipe (5).

3. The air-cooled chemical crystallization kettle according to claim 2, characterized in that, The external circulation assembly includes a cooling device. A centrifugal pump (11) is provided on the cooling device, and the centrifugal pump (11) is communicated with the heat exchange tube (2) through a pipeline. The return air pipe (5) is communicated with the cooling device.

4. The air-cooled chemical crystallization kettle according to claim 3, characterized in that, A one-way valve (12) is provided on the return air pipe (5), and an intake pipe (13) is communicated with the side wall of the return air pipe (5) near the one-way valve (12). The intake pipe (13) is communicated with a compressor, and an electric control valve (14) is provided on the pipeline.

5. The air-cooled chemical crystallization kettle according to claim 4, characterized in that, A heating device is provided on the intake pipe (13).

6. The air-cooled chemical crystallization kettle according to claim 5, wherein, The electric control valve (14) is a three-way valve, and the electric control valve (14) is further communicated with a gas collecting pipe (15).

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