Circular reaction device

Abstract

The utility model discloses a circular reaction device which comprises a kettle body and a condensation module, the kettle body comprises a circular feed port and a circular discharge port, an outer circulation pipeline communicated with the circular feed port and the circular discharge port is arranged outside the kettle body, and the condensation module cools at least partial area of the outer circulation pipeline; the cooling and stirring mechanism is rotationally arranged on the kettle body and used for stirring materials in the kettle body, a cooling channel is arranged in the cooling and stirring mechanism, the inlet end and the outlet end of the cooling channel are both arranged outside the kettle body, and the cooling channel is used for introducing a flowing cooling medium. The reaction kettle can effectively solve the technical problem that the temperature in the reaction kettle cannot be quickly exported in the preparation process, can regulate and control the temperature in the kettle, prevents the temperature in the reaction kettle from being too high, reduces by-products, and improves the product quality.

Description

Technical Field

[0001] This application belongs to the field of chemical equipment, and specifically relates to a circulating reaction device. Background Technology

[0002] Thunar musk is a musk fragrance obtained through chemical synthesis. The production process of thunar musk mainly includes two steps: first, an intermediate 1,1,3,4,4,6-hexamethyltetrahydronaphthalene (HMT) is prepared through an acid-catalyzed cyclization reaction; then, HMT undergoes a Friedel-Crafts acylation reaction with acetyl chloride to finally produce thunar musk.

[0003] Temperature changes play a crucial role in the preparation of HMT, requiring the reaction to be controlled within the range of 15-25°C. However, acid catalysis (such as AlCl3) releases a significant amount of heat during this process. Conventional condensation equipment, such as jacketed condensers, cannot exchange heat effectively, making it difficult to control the reaction temperature within the required range. This leads to increased side reactions, substrate instability, and reduced product yield and quality. Furthermore, inadequate reaction control can cause safety issues, making it unsuitable for industrial production. Therefore, the development of a device with excellent condensation performance is a prerequisite for the industrial production of HMT. Utility Model Content

[0004] The embodiments of this application provide a circulating reaction device that can effectively solve the technical problem that the temperature inside the reaction vessel cannot be quickly discharged during the preparation process. This solution can regulate the temperature inside the vessel and avoid the temperature inside the reaction vessel from becoming too high.

[0005] To address the aforementioned technical problems, embodiments of this application disclose the following technical solutions:

[0006] A circulating reaction apparatus, comprising:

[0007] The vessel body;

[0008] A condensing module, wherein the vessel body includes a circulating inlet and a circulating outlet, and an external circulation pipe is provided outside the vessel body, connecting the circulating inlet and the circulating outlet, and the condensing module cools at least a portion of the external circulation pipe;

[0009] A cooling and stirring mechanism is rotatably mounted on the vessel body and used to stir the materials inside the vessel body. The cooling and stirring mechanism includes a cooling channel, the inlet and outlet of which are located outside the vessel body. The cooling channel is used to introduce a flowing cooling medium.

[0010] In some embodiments, the cooling stirring mechanism includes:

[0011] The inner shaft is a hollow rod structure, with one end extending into the interior of the vessel body and the other end located outside the vessel body;

[0012] The outer bushing is a hollow rod structure with a spacing that fits around the inner shaft.

[0013] A disturbance rod, at least one set of the disturbance rods are disposed on the inner shaft rod, and the disturbance rod is a tube structure with open ends, one end of the disturbance rod is connected to the inner cavity of the inner shaft rod, and the other end is connected to the inner cavity of the outer bushing;

[0014] The inner shaft, the disturbance rod, and the inner cavity of the outer bushing together constitute the cooling channel.

[0015] In some embodiments, the bottom end of the inner shaft extends below the outer bushing and forms an extension section, the disturbance rod is disposed corresponding to the extension section, and the rotational outer diameter of the disturbance rod is greater than the rotational outer diameter of the outer bushing.

[0016] In some embodiments, a manifold is provided at the bottom end of the outer bushing. The manifold is a ring-shaped housing structure and is sleeved on the inner shaft. The manifold includes a manifold cavity, and the manifold cavity has a connection port for connecting one end of the disturbance rod, and a communication port corresponding to the inner cavity of the outer bushing.

[0017] In some embodiments, a plurality of disturbance rods are distributed circumferentially on the inner shaft.

[0018] In some embodiments, the bottom end of the inner shaft is open, and a multi-way valve is provided at the bottom end of the inner shaft. One end of each of the disturbance rods is connected to the inner cavity of the inner shaft through the multi-way valve.

[0019] In some embodiments, a cooling medium supply device is further included, wherein the top end of the inner shaft is open, and the cooling medium supply device is connected to the top end opening of the inner shaft and supplies cooling medium into the cooling channel.

[0020] In some embodiments, a manifold cap is further included, which is rotatably sealed on the inner shaft and the outer shaft sleeve, and the manifold cap closes the top opening of the outer shaft sleeve, and the feeding end of the cooling medium supply device is connected to the manifold cap.

[0021] In some embodiments, a disperser is provided at the top of the inside of the vessel body. The disperser includes a dispersion chamber, which is connected to the circulating feed inlet. A plurality of dispersion holes are provided on the bottom wall of the disperser, which is connected to the dispersion chamber.

[0022] In some embodiments, the condensation module is a heat exchanger.

[0023] One of the above technical solutions has the following advantages or beneficial effects:

[0024] In this technical solution, on the one hand, the material inside the reactor undergoes external heat exchange through an external condensation device and external circulation pipeline, and then circulates back into the reactor; on the other hand, the material inside the reactor undergoes direct heat exchange through the cooling channel within the cooling stirring mechanism, directly dissipating heat from the central area of ​​the reactor and preventing heat concentration. This dual-method heat exchange provides excellent temperature control, ensures uniform heat exchange, prevents substrate decomposition, reduces side reactions, and effectively controls the oxidation reaction to proceed smoothly and safely, enabling the industrial production of musk. Therefore, this invention demonstrates its economic efficiency, high efficiency, and safety. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the present utility model;

[0026] Figure 2 This is a schematic diagram of the overall structure of another embodiment of the present utility model;

[0027] Figure 3 This is an enlarged structural diagram of part A of this utility model;

[0028] Figure 4 A schematic diagram showing the installation positions of the current collector cap, inner shaft, and outer bushing of this utility model.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Kettle body; 2. Condensation module; 3. External circulation pipeline; 4. Cooling stirring mechanism; 5. Cooling channel; 6. Inner shaft; 7. Outer bushing; 8. Disturbance rod; 9. Return ring; 10. Airflow direction; 11. Connection port; 12. Connecting port; 13. Return chamber; 14. Cooling medium supply device; 15. Collector cap; 16. Disperser; 17. Dispersion port; 20. Multi-way valve; 21. Fixed carrier; 22. Cooling module; 23. Transmission belt; 24. Drive motor; 101. Circulating feed inlet; 102. Circulating discharge outlet. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] As attached Figure 1 and attached Figure 2 As shown, a circulating reaction apparatus includes:

[0033] The reactor body 1 is used to fill the reaction materials, and the reactor is used for the production and preparation of musk.

[0034] The condensing module 2, the vessel body 1 includes a circulating feed inlet 101 and a circulating discharge outlet 102, and an external circulation pipe 3 is provided on the outside of the vessel body 1, which is connected to the circulating feed inlet and the circulating discharge outlet. The condensing module 2 cools at least a portion of the external circulation pipe 3 to exchange heat with the flowing material, thereby cooling the external circulation pipe 3.

[0035] A cooling and stirring mechanism 4 is rotatably mounted on the reactor body 1 and used to stir the materials inside the reactor body 1. The cooling and stirring mechanism 4 includes a cooling channel 5, the inlet and outlet of which are located outside the reactor body 1. The cooling channel 5 is used to introduce a flowing cooling medium. The cooling and stirring mechanism 4 stirs the materials inside the reactor body 1, ensuring uniform distribution of the materials within the reactor, preventing sedimentation, and promoting complete reaction. Simultaneously, it facilitates heat exchange between the cooling medium in the cooling channel and the materials inside the reactor cavity, further dissipating heat from the reactor. Moreover, the temperature and flow rate of the cooling medium can be used to control the heat exchange temperature, thereby facilitating temperature control within the reactor, reducing by-products, and improving product quality.

[0036] This solution utilizes two methods: firstly, an external condenser 2 and an external circulation pipeline 3 to exchange heat with the material inside the reactor, then recirculate the heat back into the reactor; secondly, a cooling channel within the cooling and stirring mechanism 4 directly exchanges heat with the material inside the reactor, effectively removing heat from the central region and preventing heat concentration. This dual-method heat exchange provides excellent temperature control, ensures uniform heat exchange, prevents substrate decomposition, reduces side reactions, and effectively controls the oxidation reaction to proceed smoothly and safely, enabling the industrial-scale preparation of musk. Therefore, this invention demonstrates its economic efficiency, high efficiency, and safety.

[0037] It is understandable that cooling media include a range of fluid media that can be used for heat conduction, such as air or aqueous solutions.

[0038] The cooling and stirring mechanism 4 includes:

[0039] The inner shaft 6 is a hollow rod structure, with one end extending into the interior of the vessel body 1 and the other end located outside the vessel body 1.

[0040] The outer bushing 7 is a hollow rod structure and is spaced outside the inner shaft rod 6;

[0041] Disturbance rod 8, at least one set of the disturbance rod 8 is disposed on the inner shaft rod 6, and the disturbance rod 8 is a tube structure with open ends, one end of the disturbance rod 8 is connected to the inner cavity of the inner shaft rod 6, and the other end is connected to the inner cavity of the outer shaft sleeve 7;

[0042] The inner shaft 6, the disturbance rod 8, and the inner cavity of the outer bushing 7 together constitute the cooling channel 5.

[0043] The inner shaft 6 and outer bushing 7 are coaxially fixed and serve as a rotation shaft. The distance between the inner shaft 6 and outer bushing 7 forms part of the cooling channel 5. The coaxial fixing can be achieved by using a porous support ring between them as a connecting support. The disturbance rod 8 is a tube-shaped structure with its two ends connected to the inner cavity of the inner shaft 6 and the inner cavity of the outer bushing 7, respectively. The disturbance rod 8 is used to stir and mix the materials in the vessel 1, ensuring the normal reaction process and preventing temperature concentration inside the vessel. The cooling and stirring structure 4 can simultaneously achieve the functions of stirring and cooling. Moreover, cooling occurs while stirring, resulting in faster heat exchange. During stirring, the contact surface between the disturbance rod 8 and the material changes more frequently, leading to stronger heat exchange capacity.

[0044] The bottom end of the inner shaft 6 extends to the bottom of the outer bushing 7 and forms an extension section. The disturbance rod 8 is provided corresponding to the extension section, and the outer diameter of the disturbance rod 8 is larger than the outer diameter of the outer bushing 7.

[0045] The shape of the disturbance rod 8 can be U-shaped, S-shaped, etc. The main function of the disturbance rod 8 is to provide a flow channel for the cooling medium and to rotate and disturb the material in the stirred tank.

[0046] As attached Figure 1 To be continued Figure 3 As shown, a manifold 9 is provided at the bottom end of the outer bushing 7. The manifold 9 is a ring-shaped shell structure. The manifold 9 is relatively fixed and sleeved on the inner shaft 6. The manifold 9 includes a manifold cavity 13. The manifold cavity 13 has a connection port 11 for connecting one end of the disturbance rod 8, and a communication port 12 corresponding to the inner cavity of the outer bushing 7. The manifold 9 allows the fluid medium in the inner cavities of multiple disturbance rods to flow together, and at the same time, it can keep the outer bushing 7 and the inner shaft 6 relatively fixed to form a rotating shaft.

[0047] For example, cooling airflow is introduced through the opening at the top of the inner shaft rod 6. The airflow enters the inner cavity of the disturbance rod 8 from the inner cavity of the inner shaft rod 6. Then, the airflow in the cooling channel 5 can enter the confluence chamber 13 through the connection port 11 from the inner cavity of the disturbance rod 8, and then enter the outer bushing 7 through the connecting port 12, and finally exit from the opening at the top of the outer bushing 7. In this way, heat can be dissipated from the inside of the vessel to regulate the temperature inside the vessel.

[0048] In some embodiments, a plurality of disturbance rods 8 are circumferentially distributed on the inner shaft 6. By providing multiple disturbance rods 8, the heat exchange area between the cooling medium and the material in the vessel in the cooling channel 5 can be increased, resulting in faster heat dissipation. Furthermore, multiple disturbance rods 8 can increase the intensity of stirring.

[0049] In some embodiments, the bottom end of the inner shaft rod 6 is open, and a multi-way valve 20 is provided at the bottom end of the inner shaft rod 6. One end of each of the disturbance rods 8 is connected to the inner cavity of the inner shaft rod 6 through the multi-way valve 20.

[0050] The bottom opening of the inner shaft rod 6 and the feed ends of multiple disturbance rods 8 are connected through the multi-way valve 2, and the disturbance rods 8 are connected and fixed on the inner shaft rod 6, which also makes the cooling channel 5 open.

[0051] In some embodiments, a cooling medium supply device 14 is also included, wherein the top end of the inner shaft 6 is open, and the cooling medium supply device 14 is connected to the top end opening of the inner shaft 6 and supplies cooling medium into the cooling channel 5.

[0052] In some embodiments, such as Appendix 2 and Appendix 3, Figure 4 As shown, it also includes a flow collector 15, which is rotatably and sealingly fitted onto the inner shaft 6 and the outer shaft sleeve 7, and the flow collector 15 closes the top opening of the outer shaft sleeve 7. The feeding end of the cooling medium supply device 14 is connected to the flow collector 15. The bottom end of the flow collector 15 is an open shell structure, and the open end of the flow collector 15 covers the outside of the top of the outer shaft sleeve 7. A sealing ring is provided between the flow collector 15 and the outer shaft sleeve 7. The flow collector 15 is fixedly installed on the vessel body or the fixed support body 21. The outer shaft sleeve 7 rotates in a sealed manner relative to the flow collector 15. When the cooling medium is a solution, the fluid flowing out of the top of the outer shaft sleeve 7 can be collected through the flow collector 15, and the fluid can also be recovered and recycled.

[0053] For example Figure 2 As shown, the cooling medium supply device 14 includes a conveyor, which can be a fan or a pump, for delivering air or coolant into the cooling channel 5.

[0054] The top opening of the outer bushing 7 is connected to the top opening of the inner shaft 6 through the medium pipe. The cooling medium supply device 14 also includes a cooling module 22 installed on the medium pipe. The cooling module 22 is a condenser used to cool the fluid medium.

[0055] In some embodiments, a drive mechanism is further included for driving the cooling and stirring mechanism 4 to rotate. The drive mechanism includes a drive motor 24 and a transmission belt 23 disposed on the output end of the drive motor 24. The transmission belt is sleeved on the outer bushing 7 or the inner shaft 6. A transmission wheel, such as a gear meshing with the transmission belt, may be disposed on the outer bushing 7 or the inner shaft 6 corresponding to the transmission belt 23 to ensure transmission stability.

[0056] In some embodiments, a disperser 16 is provided at the top of the interior of the vessel body 1. The disperser 16 includes a dispersion chamber, which is connected to the circulating feed port 101. A plurality of dispersion holes 17 are provided on the bottom wall of the disperser 16, which is connected to the dispersion chamber.

[0057] The material circulating back into the reactor is dispersed by the disperser 16 and the dispersion hole 17, which can achieve uniform heat exchange for the material in all parts of the reactor and avoid local low temperature and local temperature concentration.

[0058] In some embodiments, the condensation module 2 may employ a conventional heat exchanger. The heat exchanger has a cooling medium pipe and a hot flow medium pipe, both including an inlet and an outlet. The cooling medium pipe is used to introduce coolant, and the hot flow medium pipe is connected to the external circulation pipe 3 for heat exchange of the reacting materials, reducing the temperature of the materials and thus facilitating heat control within the reactor.

[0059] The material outlet of the vessel body 1 is located at the bottom of the vessel body 1. A pump is installed on the external circulation pipeline 3 for transporting circulating materials. A flow regulating valve is also installed on the external circulation pipeline.

[0060] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for mutual communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two elements or the interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. In the description of this application, "multiple" means two or more, unless otherwise expressly and specifically limited. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features.

[0061] The above steps are provided only to help understand the method, structure, and core ideas of this application. Those skilled in the art can make various improvements and modifications to this application without departing from its principles, and these improvements and modifications also fall within the scope of protection of the claims.

Claims

1. A circulating reaction apparatus, characterized in that, include: The vessel body (1); The condensing module (2) includes a circulating feed inlet (101) and a circulating discharge outlet (102) in the vessel body (1). An external circulation pipe (3) is provided outside the vessel body (1) and connects to the circulating feed inlet and the circulating discharge outlet. The condensing module (2) cools at least a portion of the external circulation pipe (3). The cooling stirring mechanism (4) is rotatably mounted on the vessel body (1) and is used to stir the material inside the vessel body (1). The cooling stirring mechanism (4) includes a cooling channel (5). The inlet and outlet of the cooling channel (5) are both located outside the vessel body (1). The cooling channel (5) is used to introduce flowing cooling medium.

2. The circulating reaction apparatus as described in claim 1, characterized in that, The cooling and stirring mechanism (4) includes: The inner shaft (6) is a hollow rod structure. One end of the inner shaft (6) extends into the interior of the vessel body (1), and the other end is located outside the vessel body (1). The outer bushing (7) is a hollow rod structure and is spaced outside the inner shaft (6); Disturbance rod (8), at least one set of the disturbance rod (8) is provided on the inner shaft rod (6), and the disturbance rod (8) is a tube structure with open ends. One end of the disturbance rod (8) is connected to the inner cavity of the inner shaft rod (6), and the other end is connected to the inner cavity of the outer bushing (7). The inner shaft (6), the disturbance rod (8), and the inner cavity of the outer bushing (7) together constitute the cooling channel (5).

3. The circulating reaction apparatus as described in claim 2, characterized in that, The bottom end of the inner shaft (6) extends to the bottom of the outer bushing (7) and forms an extension section. The disturbance rod (8) is provided corresponding to the extension section. The outer diameter of the disturbance rod (8) is greater than the outer diameter of the outer bushing (7).

4. A circulating reaction apparatus as described in claim 3, characterized in that, The bottom end of the outer bushing (7) is provided with a manifold (9), which is a ring-shaped shell structure. The manifold (9) is sleeved on the inner shaft (6). The manifold (9) includes a manifold cavity (13). The manifold cavity (13) has a connection port (11) for connecting one end of the disturbance rod (8) and a communication port (12) corresponding to the inner cavity of the outer bushing (7).

5. A circulating reaction apparatus as described in claim 4, characterized in that, The inner shaft (6) has several disturbance rods (8) distributed around its circumference.

6. A circulating reaction apparatus as described in claim 5, characterized in that, The bottom end of the inner shaft (6) is open, and a multi-way valve (20) is provided at the bottom end of the inner shaft (6). One end of each of the disturbance rods (8) is connected to the inner cavity of the inner shaft (6) through the multi-way valve (20).

7. A circulating reaction apparatus as described in claim 2, characterized in that, It also includes a cooling medium supply device (14), the top end of the inner shaft (6) is open, the cooling medium supply device (14) is connected to the top end opening of the inner shaft (6) and supplies cooling medium into the cooling channel (5).

8. A circulating reaction apparatus as described in claim 7, characterized in that, It also includes a manifold cap (15), which is rotatably sealed on the inner shaft (6) and the outer shaft sleeve (7), and the manifold cap (15) closes the top opening of the outer shaft sleeve (7), and the feeding end of the cooling medium supply device (14) is connected to the manifold cap (15).

9. A circulating reaction apparatus as described in claim 1, characterized in that, The reactor body (1) is provided with a disperser (16) at the top inside. The disperser (16) includes a dispersion chamber, which is connected to the circulating feed port (101). A number of dispersion holes (17) are opened on the bottom wall of the disperser (16) to connect to the dispersion chamber.

10. A circulating reaction apparatus as described in claim 1, characterized in that, The condensing module (2) is a heat exchanger.

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