Crude product treatment standing layering kettle used in synthesis process of 2, 3-dichloro-5-trifluoromethylpyridine
By improving the structure of the static layering reactor and utilizing the design of the stirring plate and central rotating shaft, the problem of low layering efficiency in the existing technology has been solved, achieving more efficient layering and production, and improving product purity.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 吴忠领航生物药业科技有限公司
- Filing Date
- 2025-04-28
- Publication Date
- 2026-05-12
AI Technical Summary
The current method for treating crude product in the 2,3-dichloro-5-trifluoromethylpyridine synthesis process uses a static layering reactor with low layering efficiency, which leads to prolonged production cycles and low product purity.
设计了一种包括釜体、进料管道、排渣口、出料口、隔板、通孔、盖板、中心转轴、搅动板、温度计、控制阀、流量计、电机、压力表、连接管道和控制器的静置分层釜，通过搅动板和中心转轴的配合使用，促进物料均匀分布，避免沉淀和团聚，提高分层效果。
缩短了静置时间，提高了分层釜的分层效率和生产效率，确保了产品的纯度和质量。
Smart Images
Figure CN224220884U_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of DCTF crude product processing technology, and more specifically, it relates to a static layering reactor for crude product processing in the synthesis of 2,3-dichloro-5-trifluoromethylpyridine. Background Technology
[0002] In modern chemical industry, 2,3-dichloro-5-trifluoromethylpyridine (DCTF) is an important fine chemical intermediate widely used in pesticides, pharmaceuticals, and other fields. During its production, the crude product processing stage plays a decisive role in the purity and yield of the final product.
[0003] Currently, some crude product treatment and phase separation reactors used in the synthesis of 2,3-dichloro-5-trifluoromethylpyridine have low phase separation efficiency, requiring a long time to wait for phase separation. This prolongs the entire production cycle, reduces production efficiency, and the phase separation effect may be unsatisfactory. Some impurities are difficult to completely separate through simple standing, resulting in low product purity and affecting the quality and application of subsequent products.
[0004] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and provided a static layering reactor for crude product treatment in the synthesis of 2,3-dichloro-5-trifluoromethylpyridine, in order to achieve a more practical purpose. Utility Model Content
[0005] To solve the above-mentioned technical problems, this utility model provides a sedimentation tank for crude product treatment and layering in the synthesis of 2,3-dichloro-5-trifluoromethylpyridine, which is achieved by the following specific technical means:
[0006] A sedimentation reactor for crude product treatment and stratification in the synthesis of 2,3-dichloro-5-trifluoromethylpyridine includes a reactor body, a feed pipe on one side of the top of the reactor body, a slag discharge port at the bottom of the reactor body, and a discharge port on one side of the bottom of the reactor body. The interior of the reactor body is provided with several partitions arranged sequentially from top to bottom, and several through holes are provided on the surface of each partition. A cover plate is installed at the top of the reactor body via a flange, and a central rotating shaft is rotatably mounted at the bottom of the cover plate via a bearing seat. Several stirring plates are installed on one side of the central rotating shaft, and the bottom of each stirring plate is in close contact with the top of each partition. Several thermometers are installed inside the reactor body, and control valves and flow meters are installed in the feed pipe, the slag discharge port, and the discharge port.
[0007] Furthermore, both the vessel body and the partition are made of stainless steel.
[0008] Furthermore, a motor is installed at the top of the cover plate, and the output end of the motor is connected to the central rotating shaft via a coupling.
[0009] Furthermore, pressure gauges are installed on one side of the top of the cover plate and on one side of the bottom of the vessel body.
[0010] Furthermore, several connecting pipes are installed around the periphery of the vessel body.
[0011] Furthermore, an observation window is provided on one side of the vessel.
[0012] Furthermore, a controller is installed on one side of the vessel.
[0013] Compared with the prior art, the present invention has the following beneficial effects:
[0014] The crude product treatment and settling reactor of this invention, used in the synthesis of 2,3-dichloro-5-trifluoromethylpyridine, facilitates the stratification of crude product within the reactor body through the coordinated use of the reactor body, feed pipe, slag discharge port, discharge port, baffle plate, through hole, cover plate, central rotating shaft, stirring plate, thermometer, control valve, flow meter, motor, pressure gauge, connecting pipe, observation window, and controller. This shortens the settling time, and the central rotating shaft, stirring plate, and cover plate ensure uniform material distribution, preventing sedimentation and agglomeration, resulting in more thorough stratification, thereby improving production efficiency and the stability of the stratification reactor. Attached Figure Description
[0015] Figure 1 This is a three-dimensional schematic diagram of the present invention.
[0016] Figure 2 This is a three-dimensional sectional view of the present invention.
[0017] Figure 3 This is the utility model Figure 2 An enlarged schematic diagram of part A in the middle.
[0018] In the diagram, the correspondence between component names and drawing numbers is as follows:
[0019] 1. Reactor body; 2. Feed pipe; 3. Slag discharge port; 4. Discharge port; 5. Baffle plate; 6. Through hole; 7. Cover plate; 8. Central rotating shaft; 9. Stirring plate; 10. Thermometer; 11. Control valve; 12. Flow meter; 13. Motor; 14. Pressure gauge; 15. Connecting pipe; 16. Observation window; 17. Controller. Detailed Implementation
[0020] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.
[0021] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly 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 or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0023] Example:
[0024] As attached Figure 1 To be continued Figure 3 As shown:
[0025] This invention provides a sedimentation reactor for crude product treatment in the synthesis of 2,3-dichloro-5-trifluoromethylpyridine. The reactor includes a vertical cylindrical body 1. A feed pipe 2 with a slope is located on one side of the top of the reactor body 1. A slag discharge port 3 is located at the bottom of the reactor body 1, and a discharge port 4 is located on one side of the bottom of the reactor body 1. Several circular baffles 5 are arranged sequentially from top to bottom inside the reactor body 1. Three to five layers of baffles 5 are arranged. Several through holes 6 are provided on the surface of each baffle 5, the number of which is determined by the area of the baffle 5. A circular cover plate 7 is installed at the top of the reactor body 1 via a flange. The cover plate 7 is perpendicular to the reactor body 1. The same size, with a sealing structure on the inside, the bottom of the cover plate 7 is rotatably mounted with a central rotating shaft 8 through a bearing seat, and several stirring plates 9 are installed on one side of the central rotating shaft 8, with the bottom of each stirring plate 9 tightly attached to the top of each partition plate 5. Several thermometers 10 are installed inside the vessel body 1, and the thermometers 10 are evenly distributed inside the vessel body 1. Control valves 11 and flow meters 12 are installed in the feed pipe 2, slag discharge port 3 and discharge port 4. The control valves 11 are ball valves or gate valves, etc. The thermometers 10 are platinum resistance thermometers or thermocouple thermometers with a range of 0-200℃ and an accuracy of ±1℃. The thermometers 10 are connected to the controller 17 through wires.
[0026] The through holes 6 on the surface of the partition 5 allow the material to flow slowly between adjacent spaces, promoting the separation between liquids and between liquids and solids. The rotation of the central rod can drive the stirring plate 9 to rotate on the surface of the partition 5, thereby agitating the material on the surface of the partition 5.
[0027] The vessel body 1 and the partition plate 5 are both made of 316L stainless steel.
[0028] 316L stainless steel is resistant to corrosion from crude DCTF and related chemicals, providing good chemical stability and strength.
[0029] The top of the cover plate 7 is equipped with a motor 13, and the output end of the motor 13 is connected to the central rotating shaft 8 via a coupling.
[0030] Motor 13 drives the central shaft 8 to rotate, which in turn drives the stirring plate 9 to rotate.
[0031] Pressure gauges 14 are installed on one side of the top of the cover plate 7 and one side of the bottom of the vessel body 1. The pressure gauges 14 are shock-resistant pressure gauges or diaphragm pressure gauges with a range of 0-1.6MPa and an accuracy of ±0.01MPa.
[0032] Pressure gauge 14 is used to monitor the pressure inside the tank to ensure that the pressure inside the tank is within the normal operating range. When the pressure exceeds the set value, the controller 17 will issue an alarm signal and take corresponding safety measures.
[0033] Among them, several connecting pipes 15 are installed on the periphery of the vessel body 1.
[0034] This facilitates the connection of the vessel body 1 with other processing devices.
[0035] An observation window 16 is provided on one side of the vessel body 1.
[0036] This facilitates observation of the reaction inside vessel 1.
[0037] A controller 17 is installed on one side of the vessel body 1.
[0038] The controller 17 is electrically connected to the motor 13, thermometer 10, flow meter 12 and pressure gauge 14 respectively, which facilitates the control of the overall circuit of the device.
[0039] The working principle of this embodiment is as follows: When using the crude product treatment and static stratification reactor for the synthesis of 2,3-dichloro-5-trifluoromethylpyridine, the operator first transports the crude raw material into the reactor body 1 through the feed pipe 2. After the crude raw material enters the reactor body 1, the through holes 6 on the surface of the partition plate 5 allow the crude raw material to flow slowly between adjacent spaces, promoting the separation between liquids and solids. At the same time, the operator turns on the motor 13, which drives the central shaft 8 to rotate, thereby driving the stirring plate 9 to rotate, preventing the crude raw material from accumulating and clogging on the surface of the partition plate 5. The thermometer 10 installed inside the reactor body 1 can monitor the temperature at different locations inside the reactor body 1 in real time, and the pressure gauge 14 can monitor the pressure inside the tank to ensure that the pressure inside the tank is within the normal working range. When the pressure exceeds the set value, the controller 17 will issue an alarm signal and take corresponding safety measures. After stratification is completed, the liquid is discharged from the discharge port 4, and the residue is discharged from the slag discharge port 3.
[0040] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.
Claims
1. A sedimentation reactor for crude product treatment and layering in the synthesis of 2,3-dichloro-5-trifluoromethylpyridine, comprising a reactor body (1), characterized in that: A feed pipe (2) is provided on one side of the top of the vessel body (1), a slag discharge port (3) is provided at the bottom of the vessel body (1), and a discharge port (4) is provided on one side of the bottom of the vessel body (1). Several partitions (5) are arranged sequentially from top to bottom inside the vessel body (1). Several through holes (6) are provided through the surface of the partitions (5). A cover plate (7) is installed on the top of the vessel body (1) through a flange. A central rotating shaft (8) is rotatably installed on the bottom of the cover plate (7) through a bearing seat. Several stirring plates (9) are installed on one side of the central rotating shaft (8), and the bottom of each stirring plate (9) is in close contact with the top of each partition (5). Several thermometers (10) are installed inside the vessel body (1). Control valves (11) and flow meters (12) are installed in the feed pipe (2), the slag discharge port (3), and the discharge port (4).
2. The sedimentation tank for crude product treatment and layering in the synthesis of 2,3-dichloro-5-trifluoromethylpyridine as described in claim 1, characterized in that: The vessel body (1) and the partition plate (5) are both made of 316L stainless steel.
3. The sedimentation tank for crude product treatment and layering in the synthesis of 2,3-dichloro-5-trifluoromethylpyridine as described in claim 1, characterized in that: A motor (13) is installed at the top of the cover plate (7), and the output end of the motor (13) is connected to the central rotating shaft (8) via a coupling.
4. The sedimentation tank for crude product treatment and layering in the synthesis of 2,3-dichloro-5-trifluoromethylpyridine as described in claim 1, characterized in that: Pressure gauges (14) are installed on one side of the top of the cover plate (7) and on one side of the bottom of the vessel body (1).
5. The sedimentation tank for crude product treatment and layering in the synthesis of 2,3-dichloro-5-trifluoromethylpyridine as described in claim 1, characterized in that: Several connecting pipes (15) are installed around the periphery of the vessel body (1).
6. The sedimentation tank for crude product treatment and layering in the synthesis of 2,3-dichloro-5-trifluoromethylpyridine as described in claim 1, characterized in that: An observation window (16) is provided on one side of the vessel body (1).
7. The sedimentation tank for crude product treatment and layering in the synthesis of 2,3-dichloro-5-trifluoromethylpyridine as described in claim 1, characterized in that: A controller (17) is installed on one side of the vessel body (1).