A low-temperature synthesis reactor for 2,4,6-trimethylbenzoyl chloride

Abstract

The utility model relates to chemical reaction equipment technical field discloses a kind of 2,4,6-trimethyl benzoyl chloride low-temperature synthesis reaction kettle, including reactor body, reactor body outside is respectively fixedly connected with inner heat preservation cover and outer heat preservation cover, outer heat preservation cover outside is fixedly connected with liquid inlet pipe, located liquid inlet pipe bottom fixedly connected with liquid outlet pipe, reactor body outside is still fixedly connected with electronic temperature monitoring sensor and passes through inner heat preservation cover, outer heat preservation cover extends to outer heat preservation cover outside, and electronic temperature monitoring sensor is electrically connected with external main control unit by connecting line. Inner heat preservation cover and outer heat preservation cover cooperate, reduce the loss of cold quantity, can maintain low-temperature environment stability, and the temperature guide structure of temperature guide outer tube, temperature guide inner tube and connecting pipe composition, the low temperature of cooling medium reaches reaction kettle center directly, realize under the cooperation of stirring shaft and stirring paddle, accelerate the diffusion of cold quantity, realize the function of bidirectional cooling of reactor body inside and outside, avoid raw material uneven cooling.

Description

Technical Field

[0001] This utility model relates to the field of chemical reaction equipment technology, and in particular to a low-temperature synthesis reactor for 2,4,6-trimethylbenzoyl chloride. Background Technology

[0002] The cryogenic reactor used in the preparation of 2,4,6-trimethylbenzoyl chloride achieves rapid cooling by injecting a cryogenic cooling medium into the jacket, thus creating a stable low-temperature environment and ensuring the smooth progress of the reaction. In existing cryogenic reactors, cooling is achieved by injecting a cryogenic cooling medium into the cavity between the inner cylinder and the jacket. Cooling primarily occurs through a heat transfer path from the cooling medium to the jacket, then to the inner cylinder wall, then to the raw materials near the wall, and finally to the central raw materials. This heat transfer is layer-by-layer. The cooling medium's coldness first acts on the inner cylinder wall, cooling the raw materials near the wall first, before slowly transferring the coldness towards the center. Furthermore, during many reactions, the raw materials may be stationary or under slow stirring, preventing the coldness from spreading evenly to the center quickly. This results in the cooling efficiency of the raw materials in the center of the reactor being much slower than that near the wall. Consequently, the temperature of the raw materials in the reactor becomes uneven, with the central raw materials cooling more slowly. This may prevent the required cryogenic conditions from being met, leading to incomplete reactions. Moreover, temperature differences may cause asynchronous reaction rates, with the raw materials near the wall reacting first, while the central raw materials react later, making the overall reaction process difficult to control. Utility Model Content

[0003] The purpose of this invention is to provide a low-temperature synthesis reactor for 2,4,6-trimethylbenzoyl chloride, which can effectively solve the problems in the background art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A low-temperature synthesis reactor for 2,4,6-trimethylbenzoyl chloride includes a reactor body. An inner insulation sleeve and an outer insulation sleeve are fixedly connected to the outside of the reactor body. An inlet pipe is fixedly connected to the outside of the outer insulation sleeve, and an outlet pipe is fixedly connected to the bottom of the inlet pipe. An electronic temperature monitoring sensor is also fixedly connected to the outside of the reactor body, passing through the inner and outer insulation sleeves and extending to the outside of the outer insulation sleeve. The electronic temperature monitoring sensor is electrically connected to an external main controller via a connecting wire. Multiple temperature-conducting outer tubes are provided inside the reactor body. A temperature-conducting inner tube is fixedly connected inside each temperature-conducting outer tube. Multiple connecting pipes are fixedly connected to the outside of each temperature-conducting outer tube. The end of each connecting pipe away from the temperature-conducting outer tube passes through the reactor body and is fixedly connected inside the inner insulation sleeve, communicating with the inner cavity of the outer insulation sleeve.

[0005] As a further preferred embodiment of this utility model, a fixing lug is fixedly connected to the outside of the reactor body, and the outer insulation sleeve can be installed on an external bracket with the help of the fixing lug. A discharge valve is fixedly connected to the bottom of the reactor body.

[0006] As a further preferred embodiment of this utility model, the inner insulation sleeve is provided with multiple liquid guiding holes, so that the cooling medium entering the outer insulation sleeve can enter the inner insulation sleeve through the liquid guiding holes and cool the raw materials in the reactor body from the outside of the reactor body.

[0007] As a further preferred embodiment of this utility model, a top cover is fixedly connected to the top of the reactor body, and multiple feed pipes are fixedly connected to the top of the top cover. A motor is also fixedly connected to the center of the top of the top cover. The motor is electrically connected to an external main controller through a connecting wire, and a stirring shaft is fixedly connected to the output end of the motor through a coupling. One end of the stirring shaft passes through the top cover and extends into the reactor body, where multiple stirring blades are fixedly connected. The motor drives the stirring shaft to rotate, which in turn drives the multiple stirring blades to rotate within the reactor body, thereby achieving the function of mixing and stirring the raw materials.

[0008] As a further preferred embodiment of this utility model, multiple connecting shells are fixedly connected between the outer and inner heat-conducting tubes. A material guiding channel is provided in the connecting shell, and the inner cavity of the inner heat-conducting tube is connected to the inner cavity of the reactor body through the material guiding channel. A heat-conducting cavity is provided between the inner heat-conducting tube and the connecting tube. After the cooling medium in the outer insulation sleeve enters the heat-conducting cavity through the connecting tube, the raw material in the reactor body is stirred by the stirring shaft and stirring blades. The raw material in the center of the reactor body enters the inner heat-conducting tube through the material guiding channel and flows back to the reactor body through other material guiding channels, thereby cooperating with the outer heat-conducting tube to cool the raw material in the center of the reactor body.

[0009] Compared with the prior art, the present invention has the following beneficial effects: In this invention, the inner and outer insulation sleeves work together to reduce cold loss and maintain a stable low-temperature environment. The temperature-conducting structure, consisting of the outer and inner heat-conducting pipes and the connecting pipe, allows the low temperature of the cooling medium to reach the center of the reactor directly. With the cooperation of the stirring shaft and the stirring blades, the cold diffusion is accelerated, achieving bidirectional cooling of the reactor body inside and out, thus avoiding uneven cooling of the raw materials. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a cross-sectional view of the reaction vessel body, inner insulation sleeve, and outer insulation sleeve of this utility model; Figure 3This is a schematic diagram of the disassembled structure of the temperature-conducting outer tube and the temperature-conducting inner tube of this utility model; Figure 4 for Figure 3 Enlarged view of point A in the middle; Figure 5 This is a cross-sectional view of the temperature-conducting outer tube and the temperature-conducting inner tube of this utility model.

[0011] In the diagram: 1. Reactor body; 2. Inner insulation sleeve; 3. Outer insulation sleeve; 4. Liquid inlet pipe; 5. Liquid outlet pipe; 6. Electronic temperature monitoring sensor; 7. Temperature-conducting outer pipe; 8. Temperature-conducting inner pipe; 9. Connecting pipe; 10. Top cover; 11. Feed pipe; 12. Motor; 13. Stirring shaft; 14. Stirring blade; 15. Fixing lug; 16. Discharge valve; 17. Liquid guide hole; 18. Connecting shell; 19. Material guide channel; 20. Temperature-conducting cavity. Detailed Implementation

[0012] 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.

[0013] like Figures 1-5 As shown, the present invention provides a low-temperature synthesis reactor for 2,4,6-trimethylbenzoyl chloride, comprising a reactor body 1. An inner insulation sleeve 2 and an outer insulation sleeve 3 are fixedly connected to the outside of the reactor body 1. An inlet pipe 4 is fixedly connected to the outside of the outer insulation sleeve 3, and an outlet pipe 5 is fixedly connected to the bottom of the inlet pipe 4. An electronic temperature monitoring sensor 6 is also fixedly connected to the outside of the reactor body 1 and extends through the inner insulation sleeve 2 and the outer insulation sleeve 3 to the outside of the outer insulation sleeve 3. The electronic temperature monitoring sensor 6 is electrically connected to an external main controller through a connecting wire. Multiple temperature-conducting outer tubes 7 are provided inside the reactor body 1. A temperature-conducting inner tube 8 is fixedly connected inside the temperature-conducting outer tube 7. Multiple connecting pipes 9 are fixedly connected to the outside of the temperature-conducting outer tube 7. The end of the connecting pipe 9 away from the temperature-conducting outer tube 7 passes through the reactor body 1 and is fixedly connected inside the inner insulation sleeve 2 and communicates with the inner cavity of the outer insulation sleeve 3.

[0014] like Figures 1-2As shown, a fixing lug 15 is fixedly connected to the outside of the reactor body 1. The outer insulation sleeve 3 can be installed on an external bracket with the help of the fixing lug 15. A discharge valve 16 is fixedly connected to the bottom of the reactor body 1. Multiple liquid guiding holes 17 are opened on the inner side of the inner insulation sleeve 2, so that the cooling medium entering the outer insulation sleeve 3 can enter the inner insulation sleeve 2 through the liquid guiding holes 17 and cool the raw materials in the reactor body 1 from the outside of the reactor body 1. A top cover 10 is fixedly connected to the top of the reactor body 1. Multiple feed pipes 11 are fixedly connected, and a motor 12 is also fixedly connected to the center of the top of the top cover 10. The motor 12 is electrically connected to an external main controller through a connecting wire, and the output end of the motor 12 is fixedly connected to a stirring shaft 13 through a coupling. One end of the stirring shaft 13 passes through the top cover 10 and extends into the reactor body 1, where multiple stirring blades 14 are fixedly connected. The motor 12 drives the stirring shaft 13 to rotate, which in turn drives the multiple stirring blades 14 to rotate inside the reactor body 1, thereby realizing the mixing and stirring function of the raw materials.

[0015] like Figures 2-5 As shown, multiple connecting shells 18 are fixedly connected between the outer heat-conducting tube 7 and the inner heat-conducting tube 8. A material guiding groove 19 is opened in the connecting shell 18, and the inner cavity of the inner heat-conducting tube 8 is connected to the inner cavity of the reactor body 1 through the material guiding groove 19. A heat-conducting cavity 20 is provided between the inner heat-conducting tube 8 and the connecting pipe 9. After the cooling medium in the outer insulation sleeve 3 enters the heat-conducting cavity 20 through the connecting pipe 9, the raw material in the reactor body 1 can be stirred by the stirring shaft 13 and the stirring blade 14, so that the raw material in the center of the reactor body 1 enters the inner heat-conducting tube 8 through the material guiding groove 19 and flows back to the reactor body 1 through other material guiding grooves 19, thereby cooperating with the outer heat-conducting tube 7 to cool the raw material in the center of the reactor body 1.

[0016] It should be noted that this utility model is a low-temperature synthesis reactor for 2,4,6-trimethylbenzoyl chloride. When using this reactor to synthesize 2,4,6-trimethylbenzoyl chloride, the raw materials required for the reaction are first slowly added into the reactor body 1 through the feed pipe 11 on the top cover 10. Then the valve of the feed pipe 11 is closed to prevent the raw materials from leaking or external impurities from entering during the reaction. Subsequently, a low-temperature cooling medium is introduced through the liquid inlet pipe 4 on the outside of the outer insulation sleeve 3 using an external cooling medium circulation device. The cooling medium enters the cavity between the outer insulation sleeve 3 and the inner insulation sleeve 2, and then acts directly on the outer wall of the reactor body 1 through the liquid guide hole 17 on the inner side of the inner insulation sleeve 2, cooling the raw materials near the cylinder wall inside the reactor body 1. Meanwhile, a portion of the cooling medium inside the outer insulation sleeve 3 enters the temperature-conducting cavity 20 between the temperature-conducting outer tube 7 and the temperature-conducting inner tube 8 through the connecting pipe 9, thereby transferring the cooling capacity of the cooling medium to the temperature-conducting outer tube 7 and the temperature-conducting inner tube 8. Then, the motor 12 on the top cover 10 is started, and the motor 12 drives the stirring shaft 13 to rotate. The stirring shaft 13 then drives the multiple stirring blades 14 at its bottom to rotate inside the reactor body 1. When the stirring blades 14 rotate, they drive the raw materials inside the reactor body 1 to rotate. The material flow not only ensures uniform mixing of raw materials but also facilitates the flow of materials at the center through the material guide channel 19 on the connecting shell 18 between the outer and inner temperature-conducting tubes 7 and 8, allowing them to enter the inner temperature-conducting tube 8. The cooling energy of the cooling medium in the temperature-conducting cavity 20 is transferred to these central raw materials through the inner and outer temperature-conducting tubes 8 and 7, achieving rapid cooling of the central raw materials. The cooled raw materials then flow back to the reactor body 1 through other material guide channels 19 to mix with other raw materials. This cycle ensures uniform cooling of the raw materials within the reactor body 1. Simultaneously, the electronic temperature monitoring sensor 6 on the outside of the reactor body 1 monitors the temperature inside the reactor body 1 in real time and transmits the temperature data to the external main controller. Operators can adjust the flow rate of the cooling medium and the speed of the motor 12 based on the data to ensure that the reaction proceeds in a suitable low-temperature environment.

[0017] 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 low-temperature synthesis reactor for 2,4,6-trimethylbenzoyl chloride, characterized in that: The reactor body (1) includes an inner insulation sleeve (2) and an outer insulation sleeve (3) fixedly connected to the outside of the reactor body (1). An inlet pipe (4) is fixedly connected to the outside of the outer insulation sleeve (3), and an outlet pipe (5) is fixedly connected to the bottom of the inlet pipe (4). An electronic temperature monitoring sensor (6) is also fixedly connected to the outside of the reactor body (1) and extends through the inner insulation sleeve (2) and the outer insulation sleeve (3) to the outside of the outer insulation sleeve (3). The electronic temperature monitoring sensor (6) is electrically connected to an external main controller through a connecting wire. Multiple temperature-conducting outer tubes (7) are provided inside the reactor body (1). A temperature-conducting inner tube (8) is fixedly connected inside the temperature-conducting outer tube (7). Multiple connecting pipes (9) are fixedly connected to the outside of the temperature-conducting outer tube (7). One end of the connecting pipe (9) away from the temperature-conducting outer tube (7) passes through the reactor body (1) and is fixedly connected inside the inner insulation sleeve (2) and communicates with the inner cavity of the outer insulation sleeve (3).

2. The low-temperature synthesis reactor for 2,4,6-trimethylbenzoyl chloride according to claim 1, characterized in that: A fixed lug (15) is fixedly connected to the outside of the reactor body (1), and a discharge valve (16) is fixedly connected to the bottom of the reactor body (1).

3. The low-temperature synthesis reactor for 2,4,6-trimethylbenzoyl chloride according to claim 1, characterized in that: The inner insulation sleeve (2) has multiple liquid guiding holes (17) on its inner side.

4. The low-temperature synthesis reactor for 2,4,6-trimethylbenzoyl chloride according to claim 1, characterized in that: The reactor body (1) is fixedly connected to a top cover (10), and the top cover (10) is fixedly connected to a plurality of feed pipes (11). The top center of the top cover (10) is also fixedly connected to a motor (12). The motor (12) is electrically connected to an external main controller via a connecting line. The output end of the motor (12) is fixedly connected to a stirring shaft (13) via a coupling. One end of the stirring shaft (13) passes through the top cover (10) and extends into the reactor body (1) and is fixedly connected to a plurality of stirring blades (14).

5. The low-temperature synthesis reactor for 2,4,6-trimethylbenzoyl chloride according to claim 1, characterized in that: Multiple connecting shells (18) are fixedly connected between the outer heat-conducting tube (7) and the inner heat-conducting tube (8). A material guiding groove (19) is provided in the connecting shell (18), and the inner cavity of the inner heat-conducting tube (8) is connected to the inner cavity of the reactor body (1) through the material guiding groove (19). A heat-conducting cavity (20) is provided between the inner heat-conducting tube (8) and the connecting tube (9).

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