A temperature-controlled reactor for the synthesis of triazole

Abstract

This utility model relates to the field of reaction vessel technology and discloses a temperature-controlled reaction vessel for triazole synthesis, including a vessel body, a shaft frame fixedly connected to the vessel body, a stirring shaft rotatably connected inside the shaft frame, the lower end of the stirring shaft extending into the vessel body, a motor fixedly connected to the shaft frame, the motor being electrically connected to an external main controller via wires, the output end of the motor being fixedly connected to the upper end of the stirring shaft, a jacket fixedly connected to the outside of the vessel body, and a lower partition frame and an upper partition frame fixedly connected between the vessel body and the motor, respectively. The jacket on the outside of the vessel body, the outer heating coil and the inner heating coil on the inside form an all-round heating structure. The heating side cavity and the heating bottom cavity are connected through a guide pipe to achieve uniform heating of the vessel wall. The outer heating coil circulates heat from bottom to top, and the inner heating coil circulates heat from top to bottom. Combined with the flow-diverting structure such as the lower water inlet flow chamber and the upper water inlet flow chamber, it can solve the problem of uneven heating rate of materials in the upper and lower parts caused by traditional unidirectional heat exchange and accelerate the initial heating rate of materials.

Description

Technical Field

[0001] This utility model relates to the field of reaction vessel technology, and in particular to a temperature-controlled reaction vessel for the synthesis of triazole. Background Technology

[0002] The synthesis of triazole commonly uses corrosion-resistant jacketed reactors, which are suitable for the cyclization and dehydration processes of raw materials such as formamide and hydrazine hydrate.

[0003] The reactors used for triazole synthesis are jacketed and temperature-controlled by heat transfer oil or steam. An internal stirring mechanism is installed to enhance mixing and heat transfer. For example, the existing Chinese utility model patent with publication number CN105833821B discloses a reactor with automatic temperature control function, which includes a reactor body, a power mechanism installed above the reactor body, a stirring mechanism installed inside the reactor body, and a temperature sensor. The outer periphery of the reactor body is provided with a temperature control layer, and a temperature control mechanism is installed inside the temperature control layer. A spiral cooling pipe is installed inside the temperature control layer to control the temperature of the material inside the reactor.

[0004] Although the reactor with automatic temperature control can achieve temperature control during heat exchange, the temperature control layer is located entirely on the outside of the reactor body. The heat from the outer temperature control layer must first penetrate the metal wall of the reactor body before it can be transferred to the material inside the reactor. In the initial heating stage, the reactor body itself has a large metal heat capacity, and a large amount of heat is consumed by the reactor wall, which cannot be quickly conducted to the low-temperature material, resulting in a serious lag in heating. At the same time, its spiral cooling pipe causes the heat exchange medium to flow from one end to the other, resulting in different heating rates of the upper and lower layers of material inside the reactor, which easily leads to temperature stratification and uneven conversion of some materials. Utility Model Content

[0005] The purpose of this invention is to provide a temperature-controlled reactor for the synthesis of triazole. The jacketed heating side cavity and heating bottom cavity are equipped with a guide pipe, and with the external heating coil and internal heating coil for bidirectional heat exchange, it can avoid the temperature stratification of the material and improve the initial heating efficiency of the material, which can effectively solve the problems in the background technology.

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

[0007] A temperature-controlled reactor for triazole synthesis includes a reactor body, a shaft frame fixedly connected to the reactor body, a stirring shaft rotatably connected inside the shaft frame, the lower end of the stirring shaft extending into the reactor body, a motor fixedly connected to the shaft frame, the motor electrically connected to an external main controller via wires, the output end of the motor fixedly connected to the upper end of the stirring shaft, a jacket fixedly connected to the outside of the reactor body, a lower partition frame and an upper partition frame fixedly connected between the reactor body and the motor respectively, a plurality of guide pipes fixedly connected circumferentially to the lower partition frame facing the reactor body, and a plurality of external heating coils and internal heating coils fixedly connected circumferentially to the inside of the reactor body.

[0008] As a further preferred embodiment of this utility model, the outer side of the jacket is fixedly connected to a first water inlet connector, a second water inlet connector, a third water outlet connector, and a third water inlet connector and a second water outlet connector, respectively. The lower end of the jacket is fixedly connected to a first water outlet connector. The first water inlet connector, the second water inlet connector, and the third water inlet connector are respectively connected to the circulation pump of an external hot water unit through pipes. The first water outlet connector, the second water outlet connector, and the third water outlet connector are respectively connected to the input end of an external hot water unit through pipes.

[0009] As a further preferred embodiment of this utility model, the jacketed inner cavity located below the lower partition frame is a heating bottom cavity, and the jacketed inner cavity located between the lower partition frame and the upper partition frame is a heating side cavity. The heating bottom cavity and the heating side cavity are connected by multiple guide pipes. One end of the first water inlet connector is connected to the heating side cavity, and one end of the first drain connector is connected to the heating bottom cavity. After the heating medium enters the heating side cavity through the first water inlet connector, it enters the heating bottom cavity through multiple guide pipes and is finally discharged through the first drain connector. The medium inside the vessel can be heated from the outer wall of the vessel.

[0010] As a further preferred embodiment of this utility model, a lower water inlet flow chamber and a lower water outlet collection chamber are provided between the lower partition frame and the jacket, and an upper water inlet flow chamber and an upper water outlet collection chamber are provided between the upper partition frame and the jacket. One end of the second water inlet connector is connected to the lower water inlet flow chamber, and one end of the second water outlet connector is connected to the upper water outlet collection chamber. The cooperation of the second water inlet connector, the lower water inlet flow chamber, the upper water outlet collection chamber, and the second water outlet connector can provide a circulating water path for multiple external heating coils. The third water outlet connector is connected to the lower water outlet collection chamber, and the third water inlet connector is connected to the upper water inlet flow chamber. The cooperation of the third water outlet connector, the lower water outlet collection chamber, the third water inlet connector, and the upper water inlet flow chamber can provide a circulating water path for multiple internal heating coils.

[0011] As a further preferred embodiment of this utility model, one end of the external heating coil is fixedly connected to the inside of the vessel and communicates with the lower water inlet flow chamber, and the other end of the external heating coil is also fixedly connected to the inside of the vessel and communicates with the upper drainage collection chamber. One end of the internal heating coil is fixedly connected to the inside of the vessel and communicates with the lower drainage collection chamber, and the other end of the internal heating coil is also fixedly connected to the inside of the vessel and communicates with the upper water inlet flow chamber. Multiple external heating coils and internal heating coils are arranged circumferentially and sequentially at intervals in the vessel. The material in the vessel can be heated bidirectionally by the heating medium flowing from bottom to top in the external heating coil and from top to bottom in the internal heating coil. This prevents the inconsistent heating rates of the upper and lower layers of material in the vessel caused by the traditional unidirectional flow of the heating medium. At the same time, the heating bottom chamber and the heating side chamber can be used to achieve rapid heating of the material.

[0012] As a further preferred embodiment of this utility model, the external heating coil and the internal heating coil are respectively fixedly connected to the inside of the vessel body with multiple reinforcing rods to improve the installation stability of the external heating coil and the internal heating coil.

[0013] As a further preferred embodiment of this utility model, the plurality of inner heating coils are located inside the plurality of outer heating coils, and the plurality of outer heating coils and inner heating coils are arranged in a concentric ring.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] In this invention, the jacket on the outer side of the vessel body and the outer heating coil on the inner side form an all-round heating structure. The heating side cavity and the heating bottom cavity are connected by a guide pipe to achieve uniform heating of the vessel wall. The outer heating coil circulates heat from bottom to top and the inner heating coil circulates heat from top to bottom. With the help of the diversion structure such as the lower water inlet diversion cavity and the upper water inlet diversion cavity, the problem of uneven heating rate of materials in the upper and lower parts caused by traditional unidirectional heat exchange can be solved, and the initial heating speed of the materials can be accelerated. Attached Figure Description

[0016] Figure 1 This is a cross-sectional view of the main structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the disassembled structure of the vessel body and jacket of this utility model;

[0018] Figure 3 This is a schematic diagram of the external heating coil and the internal heating coil of this utility model.

[0019] In the diagram: 1. Vessel body; 2. Shaft support; 3. Stirring shaft; 4. Motor; 5. Jacket; 6. Lower partition frame; 7. Guide pipe; 8. External heating coil; 9. Internal heating coil; 10. First water inlet connector; 11. First drain connector; 12. Second water inlet connector; 13. Third water inlet connector; 14. Second drain connector; 15. Third drain connector; 16. Heating bottom cavity; 17. Heating side cavity; 18. Reinforcing rod; 19. Upper partition frame; 20. Lower water inlet distribution cavity; 21. Lower drain collection cavity; 22. Upper water inlet distribution cavity; 23. Upper drain collection cavity. Detailed Implementation

[0020] 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.

[0021] like Figures 1-3As shown, the present invention provides a temperature-controlled reactor for the synthesis of triazole, comprising a reactor body 1, a shaft frame 2 fixedly connected to the reactor body 1, a stirring shaft 3 rotatably connected inside the shaft frame 2, the lower end of the stirring shaft 3 extending into the reactor body 1, a motor 4 fixedly connected to the shaft frame 2, the motor 4 being electrically connected to an external main controller via wires, the output end of the motor 4 being fixedly connected to the upper end of the stirring shaft 3, a jacket 5 fixedly connected to the outside of the reactor body 1, a lower partition frame 6 and an upper partition frame 19 fixedly connected between the reactor body 1 and the motor 4 respectively, a plurality of guide pipes 7 being fixedly connected circumferentially to the lower partition frame 6 in the direction facing the reactor body 1, and a plurality of external heating coils 8 and internal heating coils 9 being fixedly connected circumferentially to the inside of the reactor body 1.

[0022] like Figures 1-2 As shown, the outer side of the jacket 5 is fixedly connected to a first water inlet connector 10, a second water inlet connector 12, a third water drain connector 15, and a third water inlet connector 13 and a second water drain connector 14. The lower end of the jacket 5 is fixedly connected to a first water drain connector 11. The first water inlet connector 10, the second water inlet connector 12, and the third water inlet connector 13 are respectively connected to the circulation pump of the external hot water unit through pipes. The first water drain connector 11, the second water drain connector 14, and the third water drain connector 15 are respectively connected to the input end of the external hot water unit through pipes. The inner cavity of the jacket 5 located below the lower partition frame 6 is the heating bottom cavity 16, and the inner cavity of the jacket 5 located between the lower partition frame 6 and the upper partition frame 19 is the heating side cavity 17. The heating bottom cavity 16 and the heating side cavity 17 are connected through multiple guide pipes 7. One end of the first water inlet connector 10 is connected to the heating side cavity 17, and one end of the first water drain connector 11 is connected to the heating bottom cavity 16. The heating medium enters the heating side cavity through the first water inlet connector 10. After entering the heating chamber 16 through multiple guide pipes 7, the medium inside the vessel 1 is finally discharged through the first drain connector 11. This allows for heating of the medium inside the vessel 1 from the outer wall of the vessel 1. A lower water inlet flow chamber 20 and a lower water outlet flow chamber 21 are provided between the lower partition frame 6 and the jacket 5. An upper water inlet flow chamber 22 and an upper water outlet flow chamber 23 are provided between the upper partition frame 19 and the jacket 5. One end of the second water inlet connector 12 is connected to the lower water inlet flow chamber 20, and one end of the second drain connector 14 is connected to the upper water outlet flow chamber 23. The collection chamber 23 is connected. The cooperation of the second water inlet connector 12, the lower water inlet diversion chamber 20, the upper water inlet collection chamber 23, and the second water inlet connector 14 can provide a circulating water path for multiple external heating coils 8. The third water inlet connector 15 is connected to the lower water inlet collection chamber 21, and the third water inlet connector 13 is connected to the upper water inlet diversion chamber 22. The cooperation of the third water inlet connector 15, the lower water inlet collection chamber 21, the third water inlet connector 13, and the upper water inlet diversion chamber 22 can provide a circulating water path for multiple internal heating coils 9.

[0023] like Figures 2-3As shown, one end of the external heating coil 8 is fixedly connected to the inside of the vessel body 1 and communicates with the lower water inlet flow chamber 20. The other end of the external heating coil 8 is also fixedly connected to the inside of the vessel body 1 and communicates with the upper drainage collection chamber 23. One end of the internal heating coil 9 is fixedly connected to the inside of the vessel body 1 and communicates with the lower drainage collection chamber 21. The other end of the internal heating coil 9 is also fixedly connected to the inside of the vessel body 1 and communicates with the upper water inlet flow chamber 22. Multiple external heating coils 8 and internal heating coils 9 are arranged circumferentially and alternately inside the vessel body 1. The heating medium inside the external heating coil 8 heats the water from bottom to top, and the internal heating coil 9 heats the water inlet flow chamber 22. The heating medium inside the heating coil 9 heats the material inside the vessel 1 bidirectionally from top to bottom, preventing the inconsistent heating rates of the upper and lower layers of material inside the vessel 1 caused by the traditional unidirectional flow of the heating medium. At the same time, it can achieve rapid heating of the material by working with the heating bottom cavity 16 and the heating side cavity 17. Multiple reinforcing rods 18 are fixedly connected to the outer heating coil 8 and the inner heating coil 9 and the inner side of the vessel 1, respectively, to improve the installation stability of the outer heating coil 8 and the inner heating coil 9. Multiple inner heating coils 9 are located inside multiple outer heating coils 8, and multiple outer heating coils 8 and inner heating coils 9 are arranged in a concentric ring.

[0024] It should be noted that this utility model is a temperature-controlled reactor for triazole synthesis. The raw materials required for triazole synthesis are stably added into the reactor body 1. After sealing the feed port of the reactor body 1, the motor 4 is started, and a suitable stirring speed is set through an external controller. When the motor 4 is running, it drives the stirring shaft 3 to rotate continuously, uniformly stirring the raw materials in the reactor body 1 to maintain a fully mixed state. Then, the heating process begins: the circulation pump of the external hot water unit is turned on, and the heating medium is supplied to the equipment through the first water inlet 10, the second water inlet 12, and the third water inlet 13. The heating medium is stored in the heating side cavity 17 and the heating bottom cavity 16 inside the jacket 5. The heating medium flows in an orderly manner, and under the guidance of the guide pipe 7, uniform heat exchange is achieved inside the jacket 5. The heating medium enters the outer heating coil 8 and the inner heating coil 9 simultaneously. Under the diversion effect of the lower water inlet flow chamber 20 and the upper water inlet flow chamber 22, and the convergence effect of the upper drainage collection chamber 23 and the lower drainage collection chamber 21, a stable circulating heat exchange path is formed. The outer heating coil 8 and the inner heating coil 9 heat the material bidirectionally from inside the vessel 1, which rapidly increases the material temperature and reduces the temperature difference between the upper and lower layers. During the reaction, the flow rate of the heating medium and the stirring speed of the motor 4 are adjusted in real time by the external main controller to match the temperature control and mixing requirements of triazole synthesis.

[0025] 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 temperature-controlled reactor for the synthesis of triazole, characterized in that: The system includes a vessel body (1), on which a shaft bracket (2) is fixedly connected. A stirring shaft (3) is rotatably connected inside the shaft bracket (2). The lower end of the stirring shaft (3) extends into the vessel body (1). A motor (4) is fixedly connected to the shaft bracket (2). The motor (4) is electrically connected to an external main controller via a wire. The output end of the motor (4) is fixedly connected to the upper end of the stirring shaft (3). A jacket (5) is fixedly connected to the outside of the vessel body (1). A series of fixed connections are established between the vessel body (1) and the motor (4). The lower partition frame (6) and the upper partition frame (19) are connected. The inner cavity of the jacket (5) located below the lower partition frame (6) is the heating bottom cavity (16). The inner cavity of the jacket (5) located between the lower partition frame (6) and the upper partition frame (19) is the heating side cavity (17). A lower water inlet flow cavity (20) and a lower drainage collection cavity (21) are provided between the lower partition frame (6) and the jacket (5). An upper water inlet flow cavity (22) and an upper drainage collection cavity (23) are provided between the upper partition frame (19) and the jacket (5). The lower partition frame (6) is circumferentially fixedly connected to multiple guide pipes (7) in the direction of the vessel body (1). Multiple external heating coils (8) and internal heating coils (9) are circumferentially fixedly connected to the inner side of the vessel body (1). The multiple internal heating coils (9) are located inside the multiple external heating coils (8).

2. The temperature-controlled reaction kettle for triazole synthesis according to claim 1, characterized in that: The jacket (5) is fixedly connected to the outside of the first water inlet connector (10), the second water inlet connector (12), the third drain connector (15), the third water inlet connector (13), and the second drain connector (14). The lower end of the jacket (5) is fixedly connected to the first drain connector (11). The first water inlet connector (10), the second water inlet connector (12), and the third water inlet connector (13) are respectively connected to the circulation pump of the external hot water unit through pipes. The first drain connector (11), the second drain connector (14), and the third drain connector (15) are respectively connected to the input end of the external hot water unit through pipes.

3. The temperature-controlled reaction kettle for triazole synthesis according to claim 2, characterized in that: The heating bottom cavity (16) and the heating side cavity (17) are connected by multiple guide pipes (7). One end of the first water inlet connector (10) is connected to the heating side cavity (17), and one end of the first drain connector (11) is connected to the heating bottom cavity (16).

4. The temperature-controlled reaction kettle for triazole synthesis according to claim 2, characterized in that: One end of the second water inlet connector (12) is connected to the lower water inlet diversion chamber (20), one end of the second drain connector (14) is connected to the upper drain collection chamber (23), the third drain connector (15) is connected to the lower drain collection chamber (21), and the third water inlet connector (13) is connected to the upper water inlet diversion chamber (22).

5. The temperature-controlled reaction kettle for triazole synthesis according to claim 4, characterized in that: One end of the external heating coil (8) is fixedly connected to the inside of the vessel body (1) and communicates with the lower water inlet flow chamber (20). The other end of the external heating coil (8) is also fixedly connected to the inside of the vessel body (1) and communicates with the upper drainage collection chamber (23). One end of the internal heating coil (9) is fixedly connected to the inside of the vessel body (1) and communicates with the lower drainage collection chamber (21). The other end of the internal heating coil (9) is also fixedly connected to the inside of the vessel body (1) and communicates with the upper water inlet flow chamber (22).

6. The temperature-controlled reaction kettle for triazole synthesis according to claim 1, characterized in that: The external heating coil (8) and the internal heating coil (9) are respectively fixedly connected to the inner side of the vessel body (1) by multiple reinforcing rods (18).

7. The temperature-controlled reactor for triazole synthesis according to claim 1, characterized in that: Multiple external heating coils (8) and internal heating coils (9) are arranged in a concentric ring.

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