A stainless steel reaction kettle

Abstract

The utility model discloses a stainless steel reation kettle, including kettle body, the kettle body is combined by inner tank and outer tank, and the gap between inner tank and outer tank forms heat conduction chamber, the top of inner tank is equipped with the tank cover through flange, a plurality of helical baffles are equipped with in heat conduction chamber inside along the axial direction, and form spiral flow channel between adjacent two helical baffles. Advantageous effects: kettle body adopts the combined structure of inner tank and outer tank, and the heat conduction chamber formed provides independent space for temperature regulation, and the multiple helical baffles set inside along the axial direction, make adjacent helical baffles form spiral flow channel. The flow channel design prolongs the flow path of heat conduction medium in heat conduction chamber, makes heat conduction medium fully contact with the outer wall of inner tank, and the heat exchange efficiency is greatly improved, ensures that the material temperature in inner tank is uniform and stable, avoids the influence of local temperature deviation on reaction effect, and is favorable to guarantee the quality consistency of final product.

Description

Technical Field

[0001] This utility model relates to the field of reaction vessel technology, and more specifically, to a stainless steel reaction vessel. Background Technology

[0002] Stainless steel reactors are characterized by rapid heating, high temperature resistance, corrosion resistance, hygiene, no environmental pollution, automatic heating without the need for a boiler, and ease of use. They are used to complete processes such as sulfidation, nitration, hydrogenation, hydrocarbonation, polymerization, and condensation. The thorough mixing of the reactants is a prerequisite. For physical change processes such as heating, cooling, liquid extraction, and gas absorption, a stirring device is required to achieve good results. They are widely used in chemical, petroleum, pharmaceutical, and pesticide industries.

[0003] The heating method of existing stainless steel reactors is mostly jacketed heating, in which heat transfer oil or steam is introduced into the jacket to heat the reactor body. However, the heat transfer medium is prone to uneven flow in the jacket, resulting in large temperature differences on the reactor wall and affecting the stability of the reaction temperature. Utility Model Content

[0004] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides a stainless steel reactor that offers advantages such as uniform heating and stable reaction temperature, thereby solving the problems mentioned in the background section.

[0005] (II) Technical Solution To achieve the advantages of uniform heating and stable reaction temperature, the specific technical solution adopted by this utility model is as follows: A stainless steel reactor includes a reactor body, which is composed of an inner tank and an outer tank, and a heat-conducting chamber is formed by the gap between the inner tank and the outer tank. A tank cover is installed on the top of the inner tank through a flange. Multiple spiral guide plates are arranged axially inside the heat-conducting chamber, and a spiral flow channel is formed between two adjacent spiral guide plates. An annular spray pipe is arranged on the upper part of the inner side of the heat-conducting chamber, and an annular diverter pipe is arranged below the annular spray pipe. Several diverter holes are opened on the bottom surface of the annular diverter pipe corresponding to the inlet of the spiral flow channel, and an inlet pipe is connected to the side of the annular diverter pipe. An outlet pipe is arranged through the heat-conducting chamber at the bottom of the outer tank.

[0006] Furthermore, the lower surface of the annular spray pipe is surrounded by two sets of high-pressure nozzles, one set of which faces the inner wall of the outer tank, and the other set of which faces multiple spiral guide plates. The side of the annular spray pipe is connected to a cleaning pipe.

[0007] Furthermore, the inner wall of the outer tank and the surface of the spiral guide plate are both coated with a nano-ceramic thermal conductive coating, and the thickness of the nano-ceramic thermal conductive coating is 0.1-0.2 mm.

[0008] Furthermore, a motor is fixed to the top of the tank lid by bolts, and a stirring paddle is fixed to the output end of the motor by a coupling. The surface of the stirring paddle is provided with a stirring rod and a stirring impeller from top to bottom, and a gap is reserved between the stirring rod of the stirring paddle and the inner wall of the inner tank.

[0009] Furthermore, the surface of the tank cover is equipped with a feed nozzle and a pressure relief valve, and a flange is provided at the connection between the tank cover and the inner tank.

[0010] Furthermore, both the inlet pipe and the outlet pipe are equipped with manual valves, and the outlet pipe is either a heat transfer medium outlet or a cleaning waste liquid outlet.

[0011] Furthermore, the bottom of the inner tank is connected to a discharge nozzle, and a valve is installed inside the discharge nozzle. One end of the discharge nozzle extends through the outer tank to the outside of the vessel body.

[0012] (III) Beneficial Effects Compared with the prior art, the present invention provides a stainless steel reaction vessel, which has the following beneficial effects: (1) In this utility model, the vessel body adopts a combination structure of inner and outer tanks, forming a heat-conducting chamber that provides an independent space for temperature regulation. Combined with multiple spiral guide plates arranged axially inside, a spiral flow channel is formed between adjacent guide plates. This flow channel design extends the flow path of the heat-conducting medium within the heat-conducting chamber, allowing the heat-conducting medium to fully contact the outer wall of the inner tank, significantly improving heat exchange efficiency, ensuring uniform and stable material temperature inside the inner tank, avoiding localized temperature deviations from affecting the reaction effect, and helping to ensure the consistency of the final product quality.

[0013] (2) This utility model features a design with two sets of high-pressure nozzles facing different directions on the lower surface of the annular spray pipe, enabling targeted cleaning of key components inside the heat-conducting chamber. The nozzles facing the inner wall of the outer tank thoroughly clean the inner wall, while the nozzles facing the spiral guide plate deeply clean the surface of the guide plate, preventing residual materials from adhering and affecting subsequent heat conduction efficiency or contaminating the materials for the next reaction. The entire cleaning process can be completed by introducing high-pressure cleaning fluid through the cleaning pipe. The operation is simple and convenient, requiring no disassembly of the equipment for manual cleaning. This not only saves labor costs but also shortens equipment maintenance time, reduces overall maintenance costs, and ensures the cleanliness of the equipment's interior, extending the equipment's service life. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of a stainless steel reactor according to an embodiment of the present utility model; Figure 2 This is a schematic diagram of the internal structure of the vessel; Figure 3 yes Figure 2 Enlarged view of structure A.

[0016] In the picture: 1. Kettle body; 2. Tank lid; 3. Motor; 4. Discharge nozzle; 5. Liquid inlet pipe; 6. Cleaning pipe; 7. Stirring paddle; 8. Inner tank; 9. Outer tank; 10. Spiral guide plate; 11. Heat conduction chamber; 12. Annular spray pipe; 13. Annular diverter pipe; 14. High-pressure nozzle; 15. Diverter hole; 16. Liquid outlet pipe; 17. Spiral flow channel; 18. Nano-ceramic thermally conductive coating. Detailed Implementation

[0017] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0018] According to an embodiment of the present invention, a stainless steel reaction vessel is provided.

[0019] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments, such as... Figure 1-3As shown, a stainless steel reactor according to an embodiment of the present invention includes a reactor body 1, which is composed of an inner tank 8 and an outer tank 9. A heat-conducting chamber 11 is formed between the inner tank 8 and the outer tank 9. A tank cover 2 is installed on the top of the inner tank 8 through a flange. Multiple spiral guide plates are arranged axially inside the heat-conducting chamber 11, and a spiral flow channel 17 is formed between two adjacent spiral guide plates. An annular spray pipe 12 is arranged on the upper part of the inner side of the heat-conducting chamber 11, and an annular diverter pipe 13 is arranged below the annular spray pipe 12. The bottom surface of the 13 is provided with several diversion holes 15 corresponding to the inlet of the spiral flow channel 17, and the side of the annular diversion pipe 13 is connected to the liquid inlet pipe 5. The bottom of the outer tank 9 is provided with a liquid outlet pipe 16 through the heat conduction chamber 11. The vessel body 1 adopts a double-layer structure design, which is composed of an inner tank 8 and an outer tank 9. The inner tank 8 is mainly used to contain the material to be reacted, while the outer tank 9 plays a role in protection and auxiliary temperature control. The gap reserved between the inner tank 8 and the outer tank 9 forms a closed heat conduction chamber 11, which is the key space for material temperature regulation. To facilitate material addition and post-reaction maintenance, a tank cover 2 is installed on the top of the inner tank 8 via a flange. This flange connection not only ensures a tight seal between the tank cover 2 and the inner tank 8 but also facilitates subsequent disassembly and cleaning. A motor 3 is bolted to the top of the tank cover 2, ensuring a secure installation and preventing violent shaking during operation. The motor 3 serves as the power source, and its output end is fixed to a stirring paddle 7 via a coupling. This coupling ensures stable power transmission from the motor 3, allowing the stirring paddle 7 to rotate synchronously with the motor 3, thereby agitating the materials. Multiple spiral guide plates are axially arranged inside the heat-conducting chamber 11. These guide plates are made of corrosion-resistant material and guide the orderly flow of the heat-conducting medium. The spiral flow channel 17 formed between adjacent spiral guide plates extends the flow path of the heat-conducting medium within the chamber, allowing for full contact between the heat-conducting medium and the outer wall of the inner tank 8, thus improving temperature control efficiency. An annular spray pipe 12 is provided on the upper inner side of the outer tank 9. The annular structure design allows the spray pipe to cover most of the inner area of ​​the outer tank 9. The bottom surface of the annular diversion pipe 13 is provided with several diversion holes 15 corresponding to the inlet of the spiral flow channel 17. These diversion holes 15 can evenly distribute the heat transfer medium into each spiral flow channel 17. The side of the annular diversion pipe 13 is connected to the liquid inlet pipe 5, which is the channel for the heat transfer medium to enter the annular diversion pipe 13.

[0020] Please refer to Figure 2 and Figure 3Two sets of high-pressure nozzles 14 are arranged around the lower surface of the annular spray pipe 12. One set of high-pressure nozzles 14 is set towards the inner wall of the outer tank 9, and the other set of high-pressure nozzles 14 is set towards multiple spiral guide plates. The side of the annular spray pipe 12 is connected to the cleaning pipe 6. The layout of the two sets of nozzles is precisely designed to achieve comprehensive cleaning of key parts of the equipment. One set of high-pressure nozzles 14 is positioned towards the inner wall of the outer tank 9. The high-pressure cleaning fluid sprayed from these nozzles can directly act on the inner wall of the outer tank 9, effectively removing residual impurities or dirt adhering to the inner wall and preventing these impurities from affecting the subsequent heat conduction effect. Another set of high-pressure nozzles 14 is positioned towards multiple spiral guide plates. Since residual substances easily accumulate on the surface of the spiral guide plates, this set of nozzles can specifically rinse the surface of the guide plates to ensure that the guide plates remain clean and do not affect the normal flow of the heat transfer medium, thereby ensuring the stable operation of the entire equipment. The bottom of the outer tank 9 is connected to the heat transfer chamber 11 and is equipped with a liquid outlet pipe 16. The heat transfer medium after heat exchange or the waste liquid after cleaning can be discharged from the equipment through the liquid outlet pipe 16. These high-pressure nozzles 14 can spray high-pressure fluid, and the side of the annular spray pipe 12 is connected to a cleaning pipe 6, which is responsible for transporting the external cleaning fluid into the annular spray pipe 12. An annular diverter pipe 13 is provided below the annular spray pipe 12, and the positions of the annular diverter pipe 13 and the spiral flow channel 17 correspond to each other.

[0021] Please refer to Figure 2 and Figure 3 The inner wall of the outer tank 9 and the surface of the spiral guide plate 10 are both coated with a nano-ceramic thermal conductive coating 18, and the thickness of the nano-ceramic thermal conductive coating 18 is 0.1-0.2mm. In order to further improve the thermal conductivity of the equipment, the inner wall of the outer tank 9 and the surface of the spiral guide plate 10 are coated with a nano-ceramic thermal conductive coating 18. The nano-ceramic material has excellent thermal conductivity, which can accelerate the heat transfer speed on the surface of the component and reduce heat loss. The thickness of the nano-ceramic thermal conductive coating 18 is controlled between 0.1-0.2mm. This thickness range has been verified by multiple experiments. It can ensure that the coating has good thermal conductivity and adhesion and is not easy to fall off. It will not increase the weight of the component or affect the internal space of the heat conduction chamber 11 due to excessive coating thickness. Thus, while improving the thermal conductivity, it ensures the overall structural stability of the equipment.

[0022] Please refer to Figure 2A motor 3 is bolted to the top of the tank lid 2, and a stirring paddle 7 is fixed to the output end of the motor 3 via a coupling. The surface of the stirring paddle 7 is sequentially equipped with a stirring rod and a stirring impeller from top to bottom. A gap is reserved between the stirring rod of the stirring paddle 7 and the inner wall of the inner tank 8. This combined structure enables multi-layered mixing of materials. The stirring rod initially disperses the upper layer of materials, while the stirring impeller thoroughly mixes the lower layer, effectively preventing material stratification and ensuring uniform reaction. The gap between the stirring rod of the stirring paddle 7 and the inner wall of the inner tank 8 is crucial. On one hand, it prevents friction and collision between the stirring rod and the inner wall of the inner tank 8 during rotation, reducing component wear and extending equipment lifespan. On the other hand, it prevents material accumulation in the gap due to the stirring rod being too close to the inner wall, ensuring that all materials inside the inner tank 8 are thoroughly mixed.

[0023] Please refer to Figure 1 and Figure 2 The surface of the tank cover 2 is equipped with a feed nozzle and a pressure relief valve. Flanges are also installed at the connection points between the tank cover 2 and the inner tank 8. The feed nozzle is the main channel for the reactant material to enter the inner tank 8, and its diameter is designed according to common material feeding rates for easy and quick material addition by operators. The pressure relief valve is a crucial component ensuring safe operation of the equipment. When the pressure inside the inner tank 8 becomes too high due to gas production from the reaction, the pressure relief valve automatically opens to release excess pressure, preventing damage or safety accidents to the inner tank 8 due to excessive pressure. Flanges are also installed at the connection points between the tank cover 2 and the inner tank 8. The flange material is consistent with that of the tank cover 2 and the inner tank 8, possessing excellent sealing and corrosion resistance. The flanges are fixed together with bolts, further enhancing the sealing effect between the tank cover and the inner tank 8, preventing material leakage or the entry of external air that could affect the reaction environment.

[0024] Please refer to Figure 1 and Figure 2 Both the inlet pipe 5 and the outlet pipe 16 are equipped with manual valves. The outlet pipe 16 serves as either the outlet for the heat transfer medium or the outlet for cleaning waste liquid. As key pipelines for medium transport in the equipment, both the inlet pipe 5 and the outlet pipe 16 are equipped with manual valves. These valves are simple and convenient to operate, allowing operators to adjust their opening and closing levels as needed to control the transport speed and volume of the medium, ensuring a stable medium supply during equipment operation. The outlet pipe 16 has a dual function: it serves as both the outlet for the heat transfer medium, discharging the heat-exchange medium from the equipment, and the outlet for the cleaning waste liquid, discharging the waste liquid generated after cleaning. This dual-function design simplifies the equipment's piping structure, reduces the number of pipes, and lowers manufacturing costs and installation difficulty.

[0025] Please refer to Figure 1 and Figure 2The bottom of the inner tank 8 is connected to a discharge nozzle 4, which is equipped with a valve. One end of the discharge nozzle 4 extends through the outer tank 9 to the outside of the vessel body 1. The discharge nozzle 4 is the channel for material discharge after the reaction is completed. Its inner diameter is designed according to the material's flowability and discharge speed requirements to ensure smooth material discharge. The valve inside the discharge nozzle 4 effectively controls the start and stop of discharge. Operators can flexibly open or close the valve according to collection needs after the material reaction is completed. The extension of one end of the discharge nozzle 4 through the outer tank 9 to the outside of the vessel body 1 allows the discharged material to be directly transported to the collection device outside the vessel body, avoiding contact between the material and the internal components of the outer tank 9 during transportation, reducing the risk of material contamination, and facilitating the collection and subsequent processing of the discharged material by operators.

[0026] Working Principle: First, the material to be reacted is injected into the inner tank 8 through the feed nozzle on the surface of the tank cover 2. After injection, the relevant valves of the feed nozzle can be closed as needed. Then, the motor 3, which is fixed to the top of the tank cover 2 by bolts, is started. After the motor 3 is powered on, its output end drives the stirring paddle 7 to rotate synchronously through the coupling. The stirring rods and stirring impellers arranged sequentially from top to bottom on the surface of the stirring paddle 7 rotate accordingly, thoroughly stirring the material injected into the inner tank 8 to ensure uniform mixing and complete reaction. At the same time, the gap reserved between the stirring rods of the stirring paddle 7 and the inner wall of the inner tank 8 can effectively prevent collision and wear between the stirring rods and the inner wall of the inner tank 8 during the stirring process. While the material is stirring and reacting, according to the required reaction temperature, the corresponding heat transfer medium (such as heating oil or coolant) is introduced into the annular diversion pipe 13 through the liquid inlet pipe 5 connected to the side of the annular diversion pipe 13 on the upper inner side of the outer tank 9. After the heat transfer medium enters the annular distribution pipe 13, it is evenly distributed into the spiral flow channel 17 formed between adjacent spiral guide plates in the heat transfer chamber 11 through several distribution holes 15 opened on its bottom surface corresponding to the inlet of the spiral flow channel 17. The heat transfer medium flows along the spiral flow channel 17, making full contact with the outer wall of the inner tank 8 during the process, thereby heating or cooling the internal materials to maintain the stable temperature environment required for the reaction. After completing the heat exchange, the heat transfer medium is finally discharged through the liquid outlet pipe 16 set at the bottom of the outer tank 9, which runs through the heat transfer chamber 11. The manual valves installed on the surfaces of the liquid inlet pipe 5 and the liquid outlet pipe 16 can flexibly control the flow rate and discharge speed of the heat transfer medium. Furthermore, the 0.1-0.2mm thick nano-ceramic thermally conductive coating 18 sprayed on the inner wall of the outer tank 9 and the surface of the spiral guide plate 10 can significantly improve the thermal conductivity, ensuring more rapid and uniform temperature transfer. During the reaction, if the pressure inside the inner tank 8 becomes too high due to the reaction, the pressure relief valve installed on the surface of the tank cover 2 will automatically open to release excess pressure, ensuring the safety and stability of the entire reaction process and preventing equipment damage or safety accidents caused by excessive pressure. When the equipment needs to be cleaned after the reaction is completed, the valves related to the heat transfer medium are closed to stop the supply of the heat transfer medium. Subsequently, high-pressure cleaning fluid is introduced into the annular spray pipe 12 through the cleaning pipe 6 connected to the side of the annular spray pipe 12. After the cleaning fluid enters the annular spray pipe 12, it is sprayed out through two sets of high-pressure nozzles 14 arranged around its lower surface. One set of high-pressure nozzles 14 faces the inner wall of the outer tank 9, which can thoroughly rinse the inner wall of the outer tank 9 and remove residual impurities adhering to the inner wall. The other set of high-pressure nozzles 14 faces multiple spiral guide plates, which can specifically rinse the surface of the spiral guide plates to ensure that there is no material residue inside the heat conduction chamber 11. The cleaning waste fluid generated during the cleaning process will flow along the heat conduction chamber 11 and eventually be discharged through the liquid outlet pipe 16 at the bottom of the outer tank 9. At this time, the liquid outlet pipe 16 serves as the cleaning waste fluid outlet.After cleaning is completed, close the relevant valves of cleaning pipe 6 to stop the supply of cleaning solution and complete the entire cleaning process. When the material reaction is complete and the equipment cleaning (if necessary) is finished, open the valve installed in the discharge nozzle 4 connected to the bottom of the inner tank 8. The product that has completed the reaction in the inner tank 8 will flow out through the discharge nozzle 4. Since one end of the discharge nozzle 4 extends through the outer tank 9 to the outside of the vessel body 1, the product can be directly collected into the external container. After the product is completely discharged, close the valve in the discharge nozzle 4 to complete the entire discharge operation.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A stainless steel reaction vessel, comprising a vessel body (1), characterized in that, The vessel body (1) is composed of an inner tank (8) and an outer tank (9), and a heat-conducting chamber (11) is formed between the inner tank (8) and the outer tank (9). The top of the inner tank (8) is fitted with a tank cover (2) through a flange. The heat-conducting chamber (11) is provided with multiple spiral guide plates along the axial direction, and a spiral flow channel (17) is formed between two adjacent spiral guide plates. An annular spray pipe (12) is provided on the upper part of the inner side of the heat-conducting chamber (11), and an annular diversion pipe (13) is provided below the annular spray pipe (12). Several diversion holes (15) are opened on the bottom side of the annular diversion pipe (13) corresponding to the inlet of the spiral flow channel (17), and the side of the annular diversion pipe (13) is connected to the liquid inlet pipe (5). The bottom of the outer tank (9) is connected to the heat-conducting chamber (11) and a liquid outlet pipe (16) is provided.

2. The stainless steel reaction vessel according to claim 1, characterized in that, The lower surface of the annular spray pipe (12) is surrounded by two sets of high-pressure nozzles (14), one set of high-pressure nozzles (14) is positioned towards the inner wall of the outer tank (9), and the other set of high-pressure nozzles (14) is positioned towards multiple spiral guide plates. The side of the annular spray pipe (12) is connected to a cleaning pipe (6).

3. A stainless steel reaction vessel according to claim 1, characterized in that, The inner wall of the outer tank (9) and the surface of the spiral guide plate (10) are both coated with a nano-ceramic thermal conductive coating (18), and the thickness of the nano-ceramic thermal conductive coating (18) is 0.1-0.2 mm.

4. A stainless steel reaction vessel according to claim 1, characterized in that, The top of the tank cover (2) is fixed with a motor (3) by bolts, and the output end of the motor (3) is fixed with a stirring paddle (7) by a coupling. The surface of the stirring paddle (7) is provided with a stirring rod and a stirring impeller from top to bottom, and a gap is reserved between the stirring rod of the stirring paddle (7) and the inner wall of the inner tank (8).

5. A stainless steel reaction vessel according to claim 1, characterized in that, The surface of the tank cover (2) is equipped with a feed nozzle and a pressure relief valve, and a flange is provided at the connection between the tank cover (2) and the inner tank (8).

6. A stainless steel reaction vessel according to claim 1, characterized in that, The inlet pipe (5) and outlet pipe (16) are both equipped with manual valves. The outlet pipe (16) is either a heat transfer medium outlet or a cleaning waste liquid outlet.

7. A stainless steel reaction vessel according to claim 1, characterized in that, The bottom of the inner tank (8) is connected to the discharge nozzle (4), and a valve is installed inside the discharge nozzle (4). One end of the discharge nozzle (4) extends through the outer tank (9) to the outside of the vessel body (1).

Images