Kettle reactor

Abstract

The utility model discloses a kettle type reactor, which belongs to the technical field of chemical reaction equipment and comprises a kettle body provided with a feed port, a discharge port, a tube pass inlet and a tube pass outlet. The temperature control assembly is arranged in the kettle body; the temperature control assembly comprises two collecting pipelines and multiple layers of spiral pipes, the multiple layers of spiral pipes are located between the two collecting pipelines and communicate with the collecting pipelines, and the tube pass inlet and the tube pass outlet communicate with the collecting pipelines correspondingly; the bearing assembly is arranged between the inner wall of the kettle body and the collecting pipeline to support the temperature control assembly; the stirring assembly comprises a stirring shaft positioned in the kettle body, and the spiral pipe is arranged around the stirring shaft; the multi-layer spiral pipe can be stably positioned in the kettle body through the cooperation of the bearing assembly and the collecting pipeline, and a traditional core cylinder fixing structure is replaced; the multi-layer spiral pipe can assist in mixing, has high heat transfer coefficient, good temperature uniformity, high reaction rate and high product yield under the same heat exchange area, is suitable for different reaction requirements, and avoids damaging the flow pattern.

Description

Technical Field

[0001] This utility model relates to the field of chemical reaction equipment technology, specifically to a batch reactor. Background Technology

[0002] Due to their simple structure, flexible operation, and strong adaptability, batch reactors are widely used in various fields requiring controlled reaction conditions, such as petrochemicals, organic synthesis, and pharmaceuticals. Their flexibility and versatility make them the preferred equipment in many chemical reaction processes. Currently, most commercially available reactors control reaction temperature by transferring heat through an outer jacket or heat tracing pipes, and by stirring to increase mixing and ensure reaction uniformity. However, the heat transfer from the outer jacket is uneven, with a greater temperature difference closer to the center of the tank, resulting in low heat transfer efficiency, significant ineffective heat loss, and long reaction times, which is detrimental to precise control. On the other hand, reactors with built-in heat tracing pipes often require additional baffles for stirring. Due to manufacturing limitations, heat tracing pipes are often multi-layered, leading to complex structures, increased nodes, and large deviations from theoretical temperature control, thus affecting reaction efficiency.

[0003] Furthermore, conventional coiled tube heat exchangers require a core tube, with the coiled tube bundle wound around the core tube and the two ends of the core tube fixed to the tube sheet to ensure the stability of the coiled tube bundle; while the stirring shaft of the reactor requires space for stirring, and the diameter of the coiled tube bundle is smaller than that of the coiled tube, and its overall rigidity is worse than that of the coiled tube reactor, so it is not possible to achieve stability simply by fixing it at the inlet and outlet.

[0004] Therefore, developing and designing a batch reactor that can be stably positioned inside the vessel by a spiral tube bundle, with high heat exchange efficiency and good temperature uniformity is an urgent problem to be solved at this stage. Utility Model Content

[0005] To address the problems existing in the prior art, this utility model provides a batch reactor in which a multi-layer spiral tube is arranged between two collecting pipes and connected to the collecting pipes. Through the cooperation of the supporting component and the collecting pipes, the multi-layer spiral tube can be stably positioned in the reactor body, replacing the traditional core cylinder fixed structure. At the same time, the multi-layer spiral tube can assist mixing, and has a high heat transfer coefficient, good temperature uniformity, high reaction rate and product yield under the same heat exchange area. It is suitable for the needs of different reactions, has a simple structural design, avoids the destruction of convection pattern, and reduces flow resistance.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] This utility model provides a batch reactor, comprising:

[0008] The vessel body is provided with a feed inlet, a discharge outlet, a tube inlet, and a tube outlet;

[0009] A temperature control component is disposed inside the vessel body; the temperature control component includes two collecting pipes and a multi-layer spiral tube, the multi-layer spiral tubes are all located between the two collecting pipes, the two ends of the multi-layer spiral tubes are respectively connected to the two collecting pipes, and the tube inlet and the tube outlet are respectively connected to one of the collecting pipes.

[0010] A support assembly is disposed between the inner wall of the vessel and the collecting pipe, and the support assembly is capable of supporting the temperature control assembly;

[0011] A stirring assembly, comprising a stirring shaft located within the vessel body, and a spiral tube arranged around the stirring shaft.

[0012] As a preferred technical solution, the inner diameters of the multi-layered spiral tubes are all different.

[0013] As a preferred technical solution, the collecting pipe includes multiple layers of coils that correspond one-to-one with the inner diameter of the spiral pipe, each layer of the spiral pipe is connected to its corresponding coil, and the multiple layers of coils are interconnected.

[0014] As a preferred technical solution, each layer of the spiral tube includes multiple parallel winding tubes, and all of the multiple winding tubes are connected to the coil of the same layer.

[0015] As a preferred technical solution, a spacer strip is provided between adjacent spiral tubes, and the spacer strip is provided with a plurality of positioning teeth, which are embedded in the gap between adjacent spiral tubes;

[0016] And / or, the length of each layer of the spiral tube is the same;

[0017] And / or, the coil is configured as a serpentine coil.

[0018] As a preferred technical solution, the support assembly includes multiple support plates, the lower end of the support plate is fixedly connected to the inner bottom wall of the vessel body, and the upper end of the support plate is provided with an adapter groove, into which the coil is embedded.

[0019] As a preferred technical solution, the two collecting pipes are distributed vertically, and the supporting component is located at the bottom of the vessel.

[0020] As a preferred technical solution, one of the tube inlet and the tube outlet is located at the top of the vessel body, and the other is located at the bottom of the vessel body;

[0021] Alternatively, both the tube inlet and the tube outlet may be located at the top or bottom of the vessel.

[0022] As a preferred technical solution, the vessel body includes a tank body, the upper end of which is provided with an upper end cap, and the lower end of which is provided with a lower end cap.

[0023] As a preferred technical solution, the stirring shaft is connected to a motor that drives its rotation, and the motor is fixed to the upper end cap;

[0024] And / or, a bearing seat is provided inside the vessel body at the lower end cap, and the end of the stirring shaft is rotatably mounted on the bearing seat;

[0025] And / or, the upper end cap is detachably connected to the tank body via a flange, or the upper end cap is welded to the tank body;

[0026] And / or, a support is provided on the outer peripheral surface of the tank;

[0027] And / or, the upper end cap is provided with a manhole.

[0028] The beneficial effects of this utility model are as follows:

[0029] The multi-layer spiral tube of this invention is disposed between two collecting pipes, with both ends of the multi-layer spiral tube connected to the two collecting pipes respectively. Through the cooperation of the supporting component and the collecting pipes, the multi-layer spiral tube can be stably positioned in the reactor body, replacing the traditional core tube fixed structure. At the same time, the multi-layer spiral tube can assist mixing, with a high heat transfer coefficient, good temperature uniformity, high reaction rate and product yield under the same heat exchange area, suitable for the needs of different reactions. When a large heat exchange area is required, the multi-layer spiral tube can be conveniently set to achieve heat exchange. The structural design is simple, avoiding the destruction of the flow pattern when the structure is complex, and reducing flow resistance. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of a first embodiment of a batch reactor according to the present invention;

[0031] Figure 2 for Figure 1 A schematic diagram of the temperature control component in the diagram;

[0032] Figure 3 for Figure 2 A schematic diagram of the structure between adjacent spiral tubes in the middle;

[0033] Figure 4 for Figure 1 A structural diagram of a support plate in the support assembly;

[0034] Figure 5 This is a schematic diagram of the overall structure of a second embodiment of the batch reactor of this utility model;

[0035] Figure 6 This is a schematic diagram of the overall structure of a third embodiment of a batch reactor according to the present invention.

[0036] In the diagram: 1-Bottle body, 11-Inlet, 12-Outlet, 13-Pipe-side inlet, 14-Pipe-side outlet, 15-Tank body, 16-Upper head, 161-Manhole, 17-Lower head, 18-Flange, 19-Support, 2-Gathering pipe, 21-Coil, 3-Spiral pipe, 31-Wrapped pipe, 4-Support assembly, 41-Support plate, 42-Adapter groove, 5-Agitator shaft, 51-Motor, 52-Bearing seat, 6-Pan strip, 61-Positioning tooth. Detailed Implementation

[0037] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0038] Example 1

[0039] Please refer to Figures 1-4 This invention provides an embodiment of a batch reactor, comprising a batch body 1, a temperature control component disposed inside the batch body 1, an inlet 11 and an outlet 12, one of which is located at the upper end of the batch body 1 and the other at the lower end of the batch body 1. The reaction stream enters the batch body 1 through the inlet 11, mixes and reacts, and then exits through the outlet 12. The temperature control component includes two vertically distributed collecting pipes 2 and a multi-layer spiral tube 3. The multi-layer spiral tube 3 is located between the two collecting pipes 2, and both ends of the multi-layer spiral tube 3 are respectively connected to the two collecting pipes. 2. One of the tube-side inlet 13 and the tube-side outlet 14 is located at the upper end of the vessel body 1, and the other is located at the lower end of the vessel body 1. The tube-side inlet 13 and the tube-side outlet 14 are respectively connected to two collecting pipes 2. The heat exchange medium enters from the tube-side inlet 13 and is evenly distributed to the multi-layer spiral tube 3 along one collecting pipe 2. The other collecting pipe 2 can collect the heat exchange medium in the multi-layer spiral tube 3 and flow out from the tube-side outlet 14. It can effectively exchange heat with the reaction material inside the vessel body 1. Under the same heat exchange area, the heat transfer coefficient is high and the temperature uniformity is good.

[0040] The support component 4 is located at the bottom of the vessel body 1 and is positioned between the inner wall of the vessel body 1 and the collecting pipe 2. The weight of the entire temperature control component is supported by the support component 4, which securely positions the multi-layer spiral tube 3 inside the vessel body 1, effectively replacing the traditional core tube fixing structure.

[0041] The stirring assembly includes a stirring shaft 5 located inside the vessel body 1, and a spiral tube 3 arranged around the stirring shaft 5. The rotation of the stirring shaft 5 allows the reactants to shuttle between the spiral tubes 3, promoting the mixing and reaction of the reactants. The spiral tube 3 can also assist in stirring and mixing, improve uniformity, ensure sufficient reaction, high reaction rate and product yield, reduce waste generation, increase output, avoid disruption of the flow pattern, and reduce flow resistance.

[0042] It should be noted that both the reactants and the heat exchange medium can be selected to flow from bottom to top or from top to bottom, depending on the actual operating conditions.

[0043] In this embodiment, please refer to Figure 1 and Figure 2 The inner diameters of the multi-layer spiral tubes 3 should all be different, and the nested arrangement of the multi-layer spiral tubes 3 has a better heat exchange effect.

[0044] For further details, please refer to Figure 1 and Figure 2 The collecting pipe 2 includes multiple layers of coils 21 that correspond one-to-one with the inner diameter of the spiral pipe 3. That is, the number of layers and the spacing between the spiral pipe 3 are the same as the number of layers and the spacing between the coils 21. Each layer of spiral pipe 3 is connected to its corresponding coil 21. The multiple layers of coils 21 are interconnected to form a whole pipe, which plays the role of collecting and distributing heat exchange medium.

[0045] For further details, please refer to... Figures 1-3 Each layer of spiral tube 3 includes multiple parallel winding tubes 31, and the multiple winding tubes 31 belonging to the same layer of spiral tube 3 can all be connected to the same layer of coil 21.

[0046] Based on the foregoing embodiments, please refer to Figure 3 A spacer strip 6 is provided between adjacent spiral tubes 3. The spacer strip 6 is provided with several positioning teeth 61. The positioning teeth 61 are embedded in the gap between adjacent spiral tubes 31. All spiral tubes 31 are connected and positioned by the positioning teeth 61 on the spacer strip 6, thereby increasing the overall rigidity.

[0047] It should be noted that, according to the heat transfer coefficient, the length of each layer of spiral tube 3 should be the same, so that the heat exchange medium can be evenly distributed into each layer of spiral tube 3, which greatly reduces the pressure resistance loss.

[0048] Specifically, the coil 21 is preferably a serpentine coil, which has high ductility and can reduce welding desoldering problems caused by excessive temperature difference or impact from stirring.

[0049] In this embodiment, please refer to Figure 1 and Figure 4The supporting component 4 includes multiple circumferentially evenly distributed support plates 41. The lower end of the support plate 41 is fixedly connected to the inner bottom wall of the vessel body 1. The upper end of the support plate 41 is provided with an adapter groove 42. The coil 21 is embedded in the adapter groove 42, which can stably support the temperature control component while facilitating the disassembly, extraction, replacement, and maintenance of the temperature control component. In other embodiments, the support plate 41 can also be welded and fixed to the coil 21 to ensure that the temperature control component is stably positioned inside the vessel body 1.

[0050] In this embodiment, please refer to Figure 1 The vessel body 1 includes a tank body 15, with an upper end cap 16 welded to the upper end of the tank body 15 and a lower end cap 17 welded to the lower end of the tank body 15.

[0051] For further details, please refer to Figure 1 The stirring shaft 5 is connected to a motor 51 that drives its rotation. The motor 51 is fixed on the upper end cap 16. At the same time, a bearing seat 52 is provided inside the vessel body 1 at the lower end cap 17. The end of the stirring shaft 5 is rotatably mounted on the bearing seat 52. The stirring shaft 5 is provided with several stirring blades. The stirring shaft 5 can rotate stably under the drive of the motor 51 to ensure the stirring effect on the reaction materials.

[0052] For details, please refer to Figure 1 The outer circumference of the tank body 15 is provided with a support 19, and the upper end cap 16 is provided with a manhole 161 to facilitate observation of the internal condition of the vessel body 1.

[0053] Example 2

[0054] Please refer to Figure 5 The main difference between this embodiment and Embodiment 1 is that, in order to meet the pipeline requirements, both the tube inlet 13 and the tube outlet 14 are located at the bottom of the vessel body 1. At this time, the lower collecting pipe 2 is divided into two isolated channels. The heat exchange medium enters the lower collecting pipe 2 through the tube inlet 13. The lower collecting pipe 2 distributes the heat exchange medium to a portion of the spiral tube 3, which flows upward to the upper collecting pipe 2. The upper collecting pipe 2 guides the heat exchange medium to the remaining spiral tube 3, which flows downward and then flows back to the lower collecting pipe 2 before exiting from the tube outlet 14. This also achieves a good heat exchange effect. In other embodiments, the tube inlet 13 and the tube outlet 14 can also be located at the top of the vessel body 1 to ensure the heat exchange effect.

[0055] Example 3

[0056] Please refer to Figure 6The main difference between this embodiment and embodiment one is that the upper end cap 16 and the tank body 15 are connected by a flange 18 to form a detachable connection structure, which increases the convenience of maintenance and repair, and facilitates the maintenance and cleaning of the inside of the vessel body 1. Correspondingly, the spiral wound tube 31 can also be disassembled or fixed inside the vessel body 1 as needed. At this time, the manhole 161 design can be eliminated, and a sight glass can be set as needed.

[0057] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. For those skilled in the art, the present utility model can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A tank reactor, characterized by, The utility model relates to a kind of temperature control kettle, including: Kettle body (1), which is provided with a feed inlet (11), a discharge outlet (12), a tube passage inlet (13) and a tube passage outlet (14); A temperature control assembly is arranged inside the kettle body (1). The temperature control assembly includes two collecting pipes (2) and multiple layers of spiral pipes (3). The multiple layers of spiral pipes (3) are located between the two collecting pipes (2). The two ends of the multiple layers of spiral pipes (3) are respectively communicated with the two collecting pipes (2). The tube passage inlet (13) and the tube passage outlet (14) are respectively communicated with one of the collecting pipes (2). A supporting assembly (4) is arranged between the inner wall of the kettle body (1) and the collecting pipes (2). The supporting assembly (4) can support the temperature control assembly. The stirring assembly includes a stirring shaft (5) located in the kettle body (1). The spiral pipe (3) is arranged around the stirring shaft (5).

2. A tank reactor according to claim 1, characterized in that The inner diameters of the multiple layers of spiral pipes (3) are different.

3. A tank reactor according to claim 2, characterized in that The collecting pipes (2) include multiple layers of coil pipes (21) corresponding to the inner diameters of the spiral pipes (3). Each layer of spiral pipe (3) is communicated with the corresponding coil pipe (21). The multiple layers of coil pipes (21) are communicated with each other.

4. A tank reactor according to claim 3, characterized in that Each layer of spiral pipe (3) includes multiple parallelly arranged winding pipes (31). The multiple winding pipes (31) are communicated with the same layer of coil pipe (21).

5. A tank reactor according to claim 4, characterised in that Adjacent spiral pipes (3) are provided with a spacer (6). The spacer (6) is provided with multiple positioning teeth (61). The positioning teeth (61) are embedded in the gap between adjacent winding pipes (31). And / or, the lengths of each layer of spiral pipe (3) are the same. And / or, the coil pipe (21) is a serpentine coil pipe.

6. A tank reactor according to claim 3, characterized in that The supporting assembly (4) includes multiple support plates (41). The lower end of the support plate (41) is fixedly connected with the inner bottom wall of the kettle body (1). The upper end of the support plate (41) is provided with an adaptive groove (42). The coil pipe (21) is embedded in the adaptive groove (42).

7. A tank reactor according to claim 1 or 3, characterized in that The two collecting pipes (2) are distributed along the vertical direction. The supporting assembly (4) is located at the bottom of the kettle body (1).

8. A tank reactor according to claim 1, characterized in that One of the tube passage inlet (13) and the tube passage outlet (14) is arranged at the top of the kettle body (1). The other is arranged at the bottom of the kettle body (1). Alternatively, the tube passage inlet (13) and the tube passage outlet (14) are both arranged at the top of the kettle body (1) or the bottom of the kettle body (1).

9. A tank reactor according to claim 1, characterized in that The kettle body (1) includes a tank body (15). The upper end of the tank body (15) is provided with an upper head (16). The lower end of the tank body (15) is provided with a lower head (17).

10. A tank reactor according to claim 9, characterized in that The stirring shaft (5) is connected with a motor (51) for driving the rotation of the stirring shaft (5). The motor (51) is fixed on the upper head (16). And / or, a bearing seat (52) is arranged at the lower head (17) in the kettle body (1). The end of the stirring shaft (5) is rotatably arranged on the bearing seat (52). And / or, the upper head (16) is detachably connected with the tank body (15) through a flange (18), or the upper head (16) is welded on the tank body (15); And / or, a support (19) is arranged on the outer peripheral surface of the tank body (15); And / or, a manhole (161) is arranged on the upper head (16).

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