Reaction device of ethyl 4-chloroacetoacetate

Abstract

The reaction device comprises a barrel and a magnetic stirring mechanism, a cavity is formed in the barrel, the cavity is provided with an opening, a feeding port and a discharging port, the opening is located in the center of the top, a distribution pipe is supported at the bottom of the cavity through a distribution pipe support, and the magnetic stirring mechanism is arranged in the cavity. The distribution pipe extends in the circumferential direction of the cylinder body, an inlet of the distribution pipe is equivalent to one feeding port and extends out of the cylinder body, the distribution pipe is provided with a plurality of air outlets, and the magnetic stirring mechanism comprises a magnetic coupling power assembly and a self-suction turbine hinge stirrer. The magnetic coupling power assembly is arranged at the position of the opening, and the self-suction turbine hinge stirrer is located in the cavity, is in transmission connection with the power assembly through a vertically-arranged rotating shaft of the self-suction turbine hinge stirrer and is driven by the power assembly to rotate and generate negative pressure, so that a system solution in the cavity flows.

Description

Technical Field

[0001] This invention relates to the field of ethyl 4-chloroacetoacetate preparation technology, and in particular to a reaction apparatus for ethyl 4-chloroacetoacetate. Background Technology

[0002] The chlorination process of ethyl 4-chloroacetoacetate is a gas-liquid two-phase reaction. When this type of reaction is carried out in a conventional reactor, it is difficult to achieve good mixing between the gas and liquid phases. Due to insufficient mixing and poor heat exchange efficiency, the conversion rate in a conventional reactor can only reach less than 50%, which means that the conversion efficiency from raw materials to product is not high. Utility Model Content

[0003] Therefore, there is a need to provide a reaction apparatus for ethyl 4-chloroacetoacetate to solve the problem of low reaction conversion rate in the chlorination stage of ethyl 4-chloroacetoacetate in the existing technology.

[0004] To achieve the above objectives, the inventors provide a reaction apparatus for ethyl 4-chloroacetoacetate, comprising a cylindrical body and a magnetic stirring mechanism. The cylindrical body has a chamber with an opening, a feed inlet, and a discharge outlet. The opening is located at the center of the top. A distribution pipe is supported at the bottom of the chamber by a distribution pipe support. The distribution pipe extends circumferentially around the cylindrical body, with its inlet serving as a feed inlet and extending outside the cylindrical body. The distribution pipe has several vent outlets. The magnetic stirring mechanism includes a magnetically coupled power assembly and a self-priming turbine blade stirrer. The magnetically coupled power assembly is located at the opening, and the self-priming turbine blade stirrer is located in the chamber. It is connected to the power assembly via its vertically arranged rotating shaft and rotates under the drive of the power assembly, generating negative pressure to cause the system solution in the chamber to flow.

[0005] Furthermore, the distribution tube is annular in shape.

[0006] Furthermore, the diameter of the air outlet is 25mm.

[0007] Furthermore, it also includes a cooling mechanism disposed within the chamber for cooling the system solution within the chamber.

[0008] Furthermore, the cooling mechanism includes a coil and a coil support for introducing refrigerant to cool the room. The coil is disposed in the chamber via the coil support and extends spirally along the height of the chamber. The inlet of the coil extends to the outside of the cylinder.

[0009] Furthermore, it also includes a temperature detection mechanism that extends downwards from the top of the cylinder into the chamber.

[0010] Furthermore, the cylinder is provided with a viewing mirror for observation.

[0011] Furthermore, it also includes an ear-type support and an electrostatic grounding plate. The ear-type support is disposed on the outer wall of the cylinder, and the electrostatic grounding plate is disposed on the ear-type support and connected to the ground for dissipating static electricity.

[0012] Furthermore, the magnetically coupled powertrain includes a motor, a reducer, a first drive shaft, a second drive shaft, an outer magnetic ring seat, an outer magnetic assembly, and an inner magnetic assembly. A circular boss is connected to the edge flange of the open section. The reducer is located on top of the circular boss. The motor is located above the reducer and connected to its input end. The output end of the reducer is connected to the upper end of the first drive shaft. The first drive shaft is vertically positioned and housed within the circular boss via a bearing. The outer magnetic ring seat is located on the first drive shaft. The outer magnetic assembly is located on the outer magnetic ring seat. A second drive shaft is spaced apart directly below the first drive shaft. The second drive shaft is vertically positioned and housed within the circular boss via a bearing. The inner magnetic assembly is located on the second drive shaft. The lower end of the second drive shaft is connected to the upper end of the rotating shaft.

[0013] Furthermore, the rated power of the motor is 18.5KW, and the rotation speed of the self-priming turbine blade agitator is 0-500rpm.

[0014] Unlike existing technologies, the above technical solution has the following beneficial effects:

[0015] Reaction gases such as chlorine can be introduced through the inlet of the distribution pipe. These gases then enter the reaction system through the outlet on the distribution pipe, increasing the contact area between the gas and liquid. Due to the high-speed rotation and self-priming effect of the stirrer, the device can generate a strong negative pressure during high-speed rotation, causing the solution to flow from bottom to top, thus achieving efficient mixing of the reactants. This stirring method can achieve a mixing degree of over 90% in the reaction system, which is more efficient than traditional stirrers and solves the problem of uneven mixing between the oil and water phases.

[0016] The above description of the utility model is merely an overview of the technical solution of this application. In order to enable those skilled in the art to better understand the technical solution of this application and to implement it based on the description and drawings, and to make the above-mentioned objectives and other objectives, features and advantages of this application easier to understand, the following description is provided in conjunction with the specific embodiments and drawings of this application. Attached Figure Description

[0017] The accompanying drawings are only used to illustrate the principles, implementation methods, applications, features, and effects of specific embodiments of this application and other related content, and should not be considered as limitations on this application.

[0018] Figure 1 This is a front view of the reaction apparatus for ethyl 4-chloroacetoacetate in this embodiment;

[0019] Figure 2 This is a top view of the distribution pipe in this embodiment;

[0020] Figure 3 This is a schematic diagram of the coupled powertrain in this embodiment;

[0021] Figure 4 This is a schematic diagram of the self-priming turbine blade agitator in this embodiment;

[0022] Figure 5 This is a top view of the reaction apparatus for ethyl 4-chloroacetoacetate in this embodiment;

[0023] Figure 6 This is the reaction equation.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Cylinder body;

[0026] 2. Coupled powertrain;

[0027] 20. Motor; 21. Reducer; 22. Second drive shaft; 23. Outer magnetic ring seat; 24. Outer magnetic assembly; 25. Inner magnetic assembly; 26. Sealing cover; 27. Mechanical seal; 281. Flange; 282. Flange; 283. Flange; 291. Bearing; 292. Bearing; 293. Bearing; 201. Circular boss; 202. Exhaust port;

[0028] 3. Self-priming turbine blade mixer;

[0029] 4. Cooling mechanism;

[0030] 40. Coil; 41. Coil support;

[0031] 5. Static grounding plate;

[0032] 6. Lifting lugs;

[0033] 7. Distribution pipe;

[0034] 70. Distribution pipe support; 71. Air outlet;

[0035] 8. End cap;

[0036] 9. Temperature detection equipment;

[0037] 10. Sight mirror. Detailed Implementation

[0038] To illustrate the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this application in detail, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this application and are therefore intended to limit the scope of protection of this application.

[0039] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0040] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0041] In the description of this application, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " in this document generally indicates that the preceding and following objects have an "or" logical relationship.

[0042] In this application, terms such as “first” and “second” are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy or order relationship between these entities or operations.

[0043] Without further limitations, the use of terms such as “comprising,” “including,” “having,” or other similar open-ended expressions in this application is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a list of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0044] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments in this application, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0045] In the description of the embodiments of this application, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the purpose of describing the specific embodiments of this application or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0046] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this application, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral arrangement; it can be a direct connection or an indirect connection through an intermediate medium; it can be a relationship of two components combined together, an interaction relationship between two components, or a connection within two structures. Those skilled in the art to which this application pertains can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0047] Please see Figures 1 to 6 This embodiment provides a reaction apparatus for ethyl 4-chloroacetoacetate, including a cylinder 1 and a magnetic stirring mechanism. The cylinder 1 has a chamber inside, which has an opening, a feed inlet, and a discharge outlet. The opening is located at the center of the top. The bottom of the chamber is supported by a distribution pipe support 70, which extends around the circumference of the cylinder 1. The inlet L of the distribution pipe is equivalent to a feed inlet and extends outside the cylinder 1. The distribution pipe 7 has several air outlets 71. The magnetic stirring mechanism includes a magnetically coupled power assembly 2 and a self-priming turbine blade stirrer 3. The magnetically coupled power assembly 2 is located at the opening, and the self-priming turbine blade stirrer 3 is located in the chamber. It is connected to the power assembly through its vertically arranged rotating shaft and rotates under the drive of the power assembly, generating negative pressure and causing the system solution in the chamber to flow.

[0048] The cylinder 1 can be made of a robust and corrosion-resistant material (such as stainless steel), possessing high strength and corrosion resistance, capable of withstanding the high temperatures and corrosive solvents that may occur during the reaction. The cylinder 1 contains a chamber designed to accommodate the reactants and allow for thorough mixing of the two-phase system (such as an oil phase and an aqueous phase).

[0049] The magnetically coupled powertrain 2 drives the self-priming turbine agitator 3 to rotate, ensuring that the agitator can rotate at high speed at a predetermined frequency. Driven by the powertrain, the agitator can rotate at high speed and generate negative pressure through its special turbine blade design, causing the solution in the reaction system to flow from bottom to top, thereby achieving efficient mixing of the reactants.

[0050] The above technical solution has the following beneficial effects:

[0051] Reaction gases such as chlorine can be introduced through the inlet of the distribution pipe 7. These gases enter the reaction system through the outlet 701 on the distribution pipe 7, increasing the contact area between the gas and liquid. Due to the high-speed rotation and self-priming effect of the stirrer, the device can generate a strong negative pressure during high-speed rotation, causing the solution to flow from bottom to top, thereby achieving efficient mixing of the reactants. This stirring method can achieve a mixing degree of over 90% in the reaction system, which is more efficient than traditional stirrers and solves the problem of uneven mixing between the oil and water phases.

[0052] Please see Figure 2 In this embodiment, the distribution tube 7 is annular. Because the distribution tube 7 is annular, chlorine or other reactive gases can be evenly distributed along the circumference of the ring and enter the reaction system. Compared to straight or other shaped distribution tubes 7, the annular design allows for more uniform gas diffusion throughout the chamber, promoting the reaction rate and helping to maximize the conversion rate.

[0053] Please see Figure 2 In this embodiment, the diameter of the air outlet 701 is 3 cm or 4 cm.

[0054] Please see Figure 1 In this embodiment, the reaction apparatus further includes a cooling mechanism 4, which is located within the chamber and used to cool the system solution within the chamber. The cooling mechanism 4 uses cooling structures (such as cooling pipes, cooling plates, etc.) located within the chamber to cool the system solution in real time, preventing the reaction from being too rapid or the temperature from being too high, thus affecting the reaction process. The cooling system can automatically adjust according to the reaction temperature to ensure stable reaction. The cooling mechanism 4 can maintain the system temperature within a reasonable range, preventing overheating problems caused by the heat of reaction.

[0055] Please see Figure 1In this embodiment, the cooling mechanism 4 includes a coil 40 for introducing refrigerant to cool down and a coil support 41. The coil 40 is disposed in the cavity through the coil support 41. The coil 40 extends spirally along the height of the cavity. The inlet J of the coil 40 extends to the outside of the cylinder 1 to facilitate the introduction of refrigerant.

[0056] The coil 40 is fixed within the reaction chamber by a coil support 41, ensuring that the coil 40 extends stably along the height of the chamber. The coil 40 is designed in a spiral shape, extending along the height of the reaction chamber. This spiral shape increases the contact area between the refrigerant and the reaction liquid, thereby improving heat exchange efficiency. The refrigerant (such as water, liquid ammonia, or other coolant) is introduced into the coil 40 through a dedicated pipe for cooling. The refrigerant flows within the coil 40 and carries away heat from the chamber through heat exchange, lowering the temperature of the reaction system.

[0057] Please see Figure 1 In this embodiment, the reaction apparatus further includes a temperature detection mechanism 9, which extends downwards from the top of the cylinder 1 into the chamber. The temperature detection mechanism 9 typically includes one or more temperature sensors (such as thermocouples, RTD resistance thermometers, etc.), which are connected via wires to a control unit located outside the cylinder 1 for real-time monitoring and recording of temperature data.

[0058] Please see Figure 1 and Figure 5 In this embodiment, the cylinder 1 is provided with a sight glass 10 for observation, so that the operator can directly observe the situation inside the chamber. The sight glass 10 is made of a chemically resistant, pressure-resistant, and transparent material, such as quartz glass or special plexiglass, to ensure that it can work stably for a long time in harsh chemical environments.

[0059] Please see Figure 1 In this embodiment, the reaction apparatus further includes an ear-type support and an electrostatic grounding plate 5. The ear-type support is disposed on the outer wall of the cylinder 1, and the electrostatic grounding plate 5 is disposed on the ear-type support and connected to the ground for discharging static electricity. The electrostatic grounding plate 5 can extend horizontally and can be located at the upper 1 / 3 of the cylinder 1. The electrostatic grounding plate 5 is usually made of a highly conductive material (such as a metal plate) and can quickly conduct the static electricity accumulated in the reaction apparatus to the ground. The electrostatic grounding plate 5, through its electrical connection with the external grounding system, dissipates the static electricity generated by the reaction system, ensuring timely release of static electricity and avoiding safety hazards caused by static electricity accumulation.

[0060] Please see Figure 3In this embodiment, the coupled powertrain 2 includes a motor 20, a reducer 21, a first drive shaft, a second drive shaft 22, an outer magnetic ring seat 23, an outer magnetic assembly 24, and an inner magnetic assembly 25. An open edge flange 281 is connected to an annular boss 201. The reducer 21 is located on the top of the annular boss 201. The motor 20 is located above the reducer 21 and connected to the input end of the reducer 21. The output end of the reducer 21 is connected to the upper end of the first drive shaft. The first drive shaft is vertically arranged and is located inside the annular boss 201 through a bearing 291. The outer magnetic ring seat 23 is located on the first drive shaft. The outer magnetic assembly 24 is located on the outer magnetic ring seat 23. The second drive shaft 22 is located at a distance directly below the first drive shaft. The second drive shaft 22 is vertically arranged and is located inside the annular boss 201 through a bearing 293. The inner magnetic assembly 25 is located on the second drive shaft 22. The lower end of the second drive shaft 22 is connected to the upper end of the rotating shaft.

[0061] When the motor 20 starts, the mechanical energy it generates is adjusted by the reducer 21 and then transmitted to the first drive shaft. Magnetic coupling is formed between the outer magnetic component 24 on the first drive shaft and the inner magnetic component 25 on the second drive shaft 22. Due to the magnetic field, even without a direct mechanical connection, the inner magnetic component 25 will rotate along with the outer magnetic component 24. Because of this magnetic coupling, non-contact power transmission is achieved, reducing mechanical wear and maintenance requirements. As the second drive shaft 22 rotates, the rotating shaft connected to it drives the self-priming turbine agitator 3 to rotate, generating negative pressure and causing the system solution to circulate from bottom to top within the chamber.

[0062] Please see Figure 3 In this embodiment, the reducer 21 can be mounted on the top of the annular boss 201 via a flange 282. A bearing 292 is provided on the outer side of the outer magnetic ring seat 23. The annular boss 201 is also provided with a sealing cover 26 and a mechanical seal 27 near the opening, and the sealing cover 26 can be connected and fixed via a flange 283. A bearing can be provided at the lower end of the second drive shaft 22 to support its rotational movement.

[0063] Please see Figure 2 In this embodiment, an exhaust port 202 is provided above the second drive shaft 22.

[0064] In this embodiment, the rated power of the motor 20 is 18.5KW, and the rotation speed of the self-priming turbine blade agitator 3 is 0-500rpm.

[0065] In this embodiment, the structure of the blade agitator is as follows: Figure 4 As shown.

[0066] Please see Figure 1 In this embodiment, the bottom of the cylinder 1 has a cap 8.

[0067] Please see Figure 1 and Figure 5 In this embodiment, the reaction apparatus also includes a lifting lug 6, which is located inside the cylinder 1 and used for lifting and maintaining components. The lifting lug 6 is made of a high-strength metal material (such as stainless steel) and can withstand the large forces applied during lifting. The lifting lug 6 is located at a suitable position inside the reaction apparatus cylinder 1, usually in the middle of the cylinder 1, providing a dedicated lifting point for the reaction apparatus.

[0068] Please see Figure 1 In this embodiment, the dimensions of the cylinder 1 are DN1800x12 H=1800, the nominal diameter of the cylinder 1 is 1800 cm, the wall thickness is 12 cm, and the height is 1800 cm.

[0069] Please see Figure 1 In this embodiment, the dimensions of the flange 281 near the opening and between the annular boss 201 are: The flange has an outer diameter of 450 cm, an inner diameter of 50 cm, and a thickness of 35 cm.

[0070] Please see Figure 1 In this embodiment, the dimensions of the coil 40 are: The diameter of the coil 40 is 10 cm, the wall thickness is 3 cm, and the length is 115000 cm.

[0071] Please see Figure 1 In this embodiment, D, F, K, G, H, E, M can be used as feed inlets, C1, C2 can be used as temperature measuring ports, I can be used as refrigerant inlet, and P can be used as bottom discharge outlet.

[0072] Please see Figure 6 In this embodiment, the reactant is diketene, the catalyst is chlorine (Cl2), and ethanol (EtOH) is used as the solvent. The product is 4780-S1 (α-chloroβ-diketone compound), a β-chlorocarbonyl compound, which is commonly used as an intermediate in organic synthesis to prepare heterocyclic compounds or other active molecules. Subsequently, ethyl 4-chloroacetoacetate is obtained by reacting product 4780-S1.

[0073] In this embodiment, the raw materials are fed into the chamber of the cylinder 1 through the feed inlet, ensuring that the system temperature is maintained between -45°C and 0°C. Chlorine gas is introduced through the inlet of the distribution pipe 7, which is arranged around the bottom of the cylinder 1 and extends to the outside of the cylinder 1. The frequency of the motor 20 of the magnetic coupling power assembly 2 is slowly adjusted to a range of 5-50Hz, thereby gradually increasing the rotation speed of the self-priming turbine blade stirrer 3 to 400-500 rpm. Under the action of the magnetic stirring mechanism, the solution in the gas-liquid two-phase system will form a bottom-up flow pattern, achieving a highly efficient and repeated mixing effect. At the same time, liquid nitrogen is introduced through the inner coil 40 throughout the reaction process to precisely control the system temperature to remain within the set range (-45°C to 0°C). When the amount of raw material remaining in the chamber is detected to be less than 0.5%, the reaction is considered to be complete, and the product can be discharged through the outlet.

[0074] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this application, this should not limit the scope of patent protection of this application. Any technical solutions that are based on the essential concept of this application and utilize the content described in the text and drawings of this application, resulting in equivalent structural or procedural substitutions or modifications, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this application.

Claims

1. A reaction apparatus for ethyl 4-chloroacetoacetate, characterized in that, The system includes a cylindrical body and a magnetic stirring mechanism. The cylindrical body has an internal chamber with an opening, a feed inlet, and a discharge outlet. The opening is located at the top, and a distribution pipe is supported at the bottom of the chamber by a distribution pipe bracket. The distribution pipe extends circumferentially around the cylindrical body, with its inlet serving as a feed inlet and extending outside the cylindrical body. The distribution pipe has several air outlets. The magnetic stirring mechanism includes a magnetically coupled power assembly and a self-priming turbine blade stirrer. The magnetically coupled power assembly is located at the opening, and the self-priming turbine blade stirrer is located in the chamber. It is connected to the power assembly via its vertically arranged rotating shaft and rotates under the drive of the power assembly, generating negative pressure and causing the system solution in the chamber to flow.

2. The reaction apparatus according to claim 1, characterized in that, The distribution tube is in the shape of a ring.

3. The reaction apparatus according to claim 1, characterized in that, The diameter of the distribution pipe is 25 mm, and the diameter of the air outlet is 3 mm or 4 mm.

4. The reaction apparatus according to claim 1, characterized in that, It also includes a cooling mechanism, which is located in the chamber and is used to cool the system solution in the chamber.

5. The reaction apparatus according to claim 4, characterized in that, The cooling mechanism includes a coil and a coil support for introducing refrigerant to cool the room. The coil is disposed in the chamber via the coil support and extends spirally along the height of the chamber. The inlet of the coil extends to the outside of the cylinder.

6. The reaction apparatus according to claim 1, characterized in that, It also includes a temperature detection mechanism that extends downwards from the top of the cylinder into the chamber.

7. The reaction apparatus according to claim 1, characterized in that, The cylinder is equipped with a viewing mirror for observation.

8. The reaction apparatus according to claim 1, characterized in that, It also includes an ear-type support and an electrostatic grounding plate. The ear-type support is located on the outer wall of the cylinder, and the electrostatic grounding plate is located on the ear-type support and connected to the ground for dissipating static electricity.

9. The reaction apparatus according to any one of claims 1 to 8, characterized in that, The magnetically coupled powertrain includes a motor, a reducer, a first drive shaft, a second drive shaft, an outer magnetic ring seat, an outer magnetic assembly, and an inner magnetic assembly. A circular boss is connected to the edge flange of the open section. The reducer is located on top of the circular boss. The motor is located above the reducer and connected to its input end. The output end of the reducer is connected to the upper end of the first drive shaft. The first drive shaft is vertically positioned and housed within the circular boss via a bearing. The outer magnetic ring seat is located on the first drive shaft. The outer magnetic assembly is located on the outer magnetic ring seat. A second drive shaft is spaced at a distance directly below the first drive shaft. The second drive shaft is vertically positioned and housed within the circular boss via a bearing. The inner magnetic assembly is located on the second drive shaft. The lower end of the second drive shaft is connected to the upper end of the rotating shaft.

10. The reaction apparatus according to claim 9, characterized in that, The rated power of the motor is 18.5KW, and the rotation speed of the self-priming turbine blade agitator is 0-500rpm.

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