Cross preheating type stirring reaction kettle
Through the design of the cross-preheated stirring reactor, the materials are preheated by using heat conduction medium and spiral material conveying pipes, which solves the problem of long preheating time of traditional stirring reactor materials, and achieves the rapid reaching of the reaction temperature of the materials and improves processing efficiency.
Patent Information
- Application Number
- CN202510492827.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-18
- Publication Date
- 2025-08-15
AI Technical Summary
The traditional stirred reactor takes a long time during the preheating process of material, and there is a temperature difference between the initial temperature of the material and the reaction temperature, which takes a certain time to reach the reaction temperature.
The cross-preheated stirred reactor is used to circulate in the gap between the kettle body and the kettle sleeve through the inlet pipe and the outlet pipe of the heat conducting medium, and preheat the material with a spiral material conveying pipe, so that the material is close to the reaction temperature before entering the kettle body.
The time when the material reaches the reaction temperature is shortened, the overall processing efficiency of the stirred reactor is improved, and the risk of side reactions caused by temperature difference is reduced.
Smart Images
Figure CN120479338A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of chemical equipment, and in particular to a cross-preheating stirred reactor. Background Art
[0002] As a key production equipment in the chemical, pharmaceutical, food and other industries, stirred reactors are widely used in various chemical reactions and physical mixing processes.
[0003] Traditional stirred reactors generally adopt a jacketed design. With the help of the jacket structure, a heat-conducting medium (such as steam, hot water or hot oil) is introduced into the reactor to heat the reactor body, provide a suitable temperature environment for the materials in the reactor, and ensure the smooth progress of related reactions.
[0004] When a traditional stirred reactor is used to process materials, it is usually necessary to preheat the reactor in order to allow the subsequent materials entering the reactor to quickly reach the reaction temperature.
[0005] Regarding the above-mentioned related technologies, although preheating the kettle body can reduce the time it takes for the material to reach the reaction temperature, since the initial temperature of the material is low when it enters the kettle body, there is a temperature difference with the temperature required for the actual reaction of the material, resulting in the material still taking a certain amount of time to reach the final reaction temperature. Therefore, there is room for improvement. Summary of the Invention
[0006] In order to further shorten the time it takes for the materials in the reactor to reach the reaction temperature, the present application provides a cross-preheating stirred reactor.
[0007] The present application provides a cross-preheating stirred reactor, which adopts the following technical solution: A cross preheating stirred reactor, comprising a reactor body, a reactor cover and a reactor jacket; The kettle cover is supported at the top opening of the kettle body; The kettle jacket is sleeved on the periphery of the kettle body, and a jacket gap is formed between the kettle jacket and the kettle body. A heat transfer medium inlet pipe and a heat transfer medium outlet pipe are connected to the kettle jacket, and both the heat transfer medium inlet pipe and the heat transfer medium outlet pipe are in communication with the jacket gap. A material conveying pipe is provided on the outer periphery of the kettle body, the material conveying pipe is located in the jacket gap, the two ends of the material conveying pipe are respectively a feed end and a discharge end, the feed end of the material conveying pipe is located outside the jacket gap, and the discharge end of the material conveying pipe is connected to the kettle body.
[0008] By adopting the above technical solution, the heat-conducting medium inlet pipe and the heat-conducting medium outlet pipe cooperate with each other to circulate the heat-conducting medium into the jacket gap formed by the kettle body and the kettle jacket. In the process of preheating the kettle body with the heat-conducting medium, the material to be processed is input into the material conveying pipe through the feed end of the material conveying pipe, and finally input into the kettle body through the discharge end of the material conveying pipe. In the process of the material flowing inside the material conveying pipe, it absorbs the heat of the heat-conducting medium in the jacket gap and is preheated simultaneously. The heat-conducting medium in the jacket gap is used to cross-preheat the kettle body and the material flowing through the material conveying pipe, so that the material has a temperature close to the reaction temperature when entering the kettle body, reducing the temperature difference with the actual reaction temperature, which is conducive to further shortening the time it takes for the material to reach the reaction temperature and effectively improving the overall processing efficiency of the stirred reactor.
[0009] Preferably, the material conveying pipe is in the shape of a spiral coil, and is sleeved on the outer periphery of the kettle body.
[0010] By adopting the above technical solution, the contact area between the material conveying pipe and the heat-conducting medium in the jacket gap is effectively increased, so that the material flowing through the material conveying pipe can better absorb the heat of the heat-conducting medium in the jacket gap.
[0011] Preferably, a sealing assembly is provided between the kettle body and the kettle jacket, and the sealing assembly is used to seal the top of the jacket gap; the sealing assembly includes a first annular plate and a second annular plate, the first annular plate is coaxially connected to the outer periphery of the top of the kettle body; the second annular plate is coaxially connected to the outer periphery of the top port of the kettle jacket, the first annular plate overlaps the upper surface of the second annular plate, and the first annular plate and the second annular plate are connected and fixed by a number of bolts and nuts.
[0012] By adopting the above technical solution, by overlapping the first annular plate with the second annular plate and connecting and fixing the two with bolts and nuts, on the one hand, the top area of the jacket gap is sealed to limit the subsequent leakage of the heat-conducting medium in the jacket gap and reduce the heat loss of the heat-conducting medium. On the other hand, the kettle body is firmly supported in the kettle jacket, reducing the subsequent displacement of the kettle body or kettle jacket due to external impact or vibration, resulting in changes in the jacket gap or uneven distribution.
[0013] Preferably, the point where the discharge end of the material conveying pipe communicates with the kettle body is located at the top of the kettle body.
[0014] By adopting the above technical solution, the material can flow into the kettle body through the top of the kettle body, which is conducive to reducing the blockage of the discharge end of the material conveying pipe by the existing material inside the kettle body, facilitating the smooth discharge of the discharge end of the material conveying pipe, and facilitating the subsequent cleaning and dredging of the discharge end of the material conveying pipe.
[0015] Preferably, the feed end of the material conveying pipe is passed through and fixed to the first annular plate.
[0016] By adopting the above technical solution, the feed end of the material conveying pipe is located outside the gap of the jacket, and there is no need to open a through hole on the kettle jacket for the material conveying pipe to pass through, which is beneficial to maintaining the structural integrity of the kettle jacket and reducing the potential leakage risk caused by the opening of the kettle jacket; at the same time, the material conveying pipe is fixedly connected to the kettle body. During the disassembly and assembly of the stirred reactor, the material conveying pipe can be installed or removed together with the kettle body, which is beneficial to improving the assembly and maintenance efficiency of the equipment.
[0017] Preferably, a plurality of brackets are protruding from the outer periphery of the kettle body corresponding to the material conveying pipe, and the brackets are connected to the coil ends of the material conveying pipe through a plurality of U-shaped pipe clamps.
[0018] By adopting the above technical solution, the material conveying pipe can be firmly supported on the periphery of the kettle body while ensuring that a gap is left between the periphery of the material conveying pipe and the kettle body, so that the heat-conducting medium in the subsequent jacket gap can better contact the material conveying pipe, thereby facilitating the use of the heat-conducting medium to better heat the material flowing through the coil section of the material conveying pipe.
[0019] Preferably, a plurality of support rods are supported at the bottom of the inner cavity of the kettle jacket, and the support rods are arranged in contact with the bottom of the outer periphery of the kettle body.
[0020] By adopting the above technical solution, a number of support rods are used to provide auxiliary support and limit for the kettle body, so that the kettle body can be more firmly supported in the kettle sleeve, which is beneficial to the uniform distribution of the jacket gap between the kettle body and the kettle sleeve. At the same time, it is beneficial to improve the stress condition at the connection between the first annular plate and the kettle body.
[0021] Preferably, a plurality of limit seats are convexly provided on the outer periphery of the bracket, and a universal ball is installed at one end of the limit seat away from the bracket, and the universal ball is arranged to abut against the inner periphery of the kettle sleeve.
[0022] By adopting the above technical solution, on the one hand, during the installation stage, when the kettle body and the material conveying pipe are lowered into the kettle sleeve, the limit seat and the universal ball at the end can be used to cooperate to position and guide the kettle body, so as to facilitate the smooth and stable lowering of the kettle body and the material conveying pipe into the kettle sleeve; on the other hand, after the kettle body is installed in place, the limit seat and the universal ball kettle body at the end can be used to support and limit the position, so as to maintain the uniform distribution of the jacket gap between the kettle body and the kettle sleeve, thereby reducing the subsequent change of the jacket gap between the kettle body and the kettle sleeve or the uneven distribution of the jacket gap due to external loads.
[0023] In summary, this application includes at least one of the following beneficial technical effects: 1. The heat-conducting medium in the gap of the jacket is used to synchronously cross-preheat the flowing materials in the kettle body and the material conveying pipe, so that the materials are preheated to a temperature close to the reaction temperature before entering the kettle body, which is beneficial to shorten the time for the materials to reach the final reaction temperature and improve the overall efficiency of the stirred reactor.
[0024] 2. By making the material conveying pipe into a spiral coil shape, the contact area between the material conveying pipe and the heat-conducting medium is increased, and the heat transfer efficiency between the material flowing through the material conveying pipe and the heat-conducting medium in the gap of the jacket is improved, which further promotes the uniform preheating of the material and reduces the risk of side reactions caused by temperature gradients.
[0025] 3. Use the bracket on the outer periphery of the kettle body in conjunction with the U-shaped pipe clamp to connect the material conveying pipe, so that the material conveying pipe can be firmly supported on the outer periphery of the kettle body while limiting the contact between the pipe wall of the material conveying pipe and the kettle body, which is conducive to the subsequent heat transfer medium in the gap of the jacket to more evenly wrap the material conveying pipe, which is conducive to the uniform heating of the subsequent material flowing through the material conveying pipe.
[0026] 4. By arranging a number of support rods for supporting the kettle body at the bottom of the inner cavity of the kettle sleeve, after the kettle body is installed in the kettle sleeve, the support rods can be used to support and limit the kettle body, which is beneficial to maintaining a uniform distribution of the gap between the kettle body and the kettle sleeve while improving the force between the kettle body and the first annular plate. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 It is a structural schematic diagram used to illustrate a cross-preheating stirred reactor in an embodiment of the present application.
[0028] Figure 2 It is a schematic diagram of the interior of the kettle jacket used in an embodiment of the present application.
[0029] Figure 3 yes Figure 2 Enlarged schematic diagram of part A in the middle.
[0030] Figure 4 It is a structural diagram of the embodiment of the present application used to illustrate the kettle body and the material conveying pipe.
[0031] Figure 5 yes Figure 2 Enlarged schematic diagram of part B in the middle.
[0032] Figure 6 yes Figure 2 Enlarged schematic diagram of part C in the middle.
[0033] Description of reference numerals: 1. Kettle body; 11. First flange; 12. Bracket; 13. U-shaped pipe clamp; 14. Limit seat; 15. Universal ball; 2. Kettle cover; 21. Second flange; 20. Stirring device; 3. Kettle jacket; 30. Support legs; 31. Heat transfer medium inlet pipe; 32. Heat transfer medium outlet pipe; 33. Support rod; 4. Material conveying pipe; 41. Feed end; 42. Discharge end; 421. Insulation cotton layer; 5. Sealing assembly; 51. First annular plate; 52. Second annular plate; 53. Annular sealing ring; 54. First annular groove; 55. Second annular groove. DETAILED DESCRIPTION
[0034] The following is combined with Figure 1-6 This application is described in further detail.
[0035] The present application discloses a cross-preheating stirred reactor, referring to Figures 1 to 3 , including a kettle body 1, a kettle cover 2 and a kettle jacket 3; the kettle cover 2 is supported at the top opening of the kettle jacket 3, and a stirring device 20 is provided on the kettle cover 2. The kettle jacket 3 is sleeved on the outer periphery of the kettle body 1, and a jacket gap is formed between the inner periphery of the kettle jacket 3 and the outer periphery of the kettle body 1. The outer periphery of the kettle jacket 3 is connected with a heat transfer medium inlet pipe 31 and a heat transfer medium outlet pipe 32. A material conveying pipe 4 is supported on the outer periphery of the kettle body 1. The material conveying pipe 4 is located in the jacket gap. The two ends of the material conveying pipe 4 are respectively a feed end 41 and a discharge end 42. The feed end 41 of the material conveying pipe 4 is located outside the jacket gap so that the material can be fed into the material conveying pipe 4 from the feed end 41 of the material conveying pipe 4. The output end of the material conveying pipe 4 is connected with the kettle body 1 so that the material can flow into the kettle body 1 through the discharge end 42 of the material conveying pipe 4.
[0036] While the heat-conducting medium in the jacket gap preheats the kettle body 1, it can also preheat the material flowing through the material conveying pipe 4, so that the material is close to the reaction temperature before entering the kettle body 1, which is conducive to further shortening the time it takes for the subsequent material entering the kettle body 1 to reach the reaction temperature.
[0037] Reference Figure 2 and Figure 3 The first flange 11 and the second flange 21 are coaxially connected to the outer periphery of the adjacent ends of the kettle body 1 and the kettle cover 2 respectively; the first flange 11 and the second flange 21 are connected and fixed by a plurality of screw nuts to ensure that the kettle cover 2 is firmly installed on the top of the kettle body 1.
[0038] Reference Figure 1 and Figure 2 The stirring device 20 includes a stirring seat, a stirring rod and a reduction motor; the stirring seat is installed on the kettle cover 2, the stirring rod is rotatably connected to the stirring seat, and the bottom end of the stirring rod extends into the inner cavity of the kettle body 1, and a number of stirring blades are connected around the outer periphery of the stirring rod; the output end of the reduction motor is coaxially connected to the top end of the stirring rod, which is used to drive the stirring rod to drive the stirring blades to rotate to stir the material inside the kettle body 1.
[0039] The heat transfer medium inlet pipe 31 and the heat transfer medium outlet pipe 32 are respectively located at the bottom and the top of the reactor jacket 3. A plurality of legs 30 are vertically welded to the bottom of the reactor jacket 3 to support the reactor jacket 3.
[0040] Reference Figure 2 and Figure 3 A sealing assembly 5 is also provided at the top of the jacket gap. The sealing assembly 5 is used to seal the top area of the jacket gap to limit the leakage of the heat-conducting medium in the jacket gap while reducing its heat loss. The sealing assembly 5 includes a first annular plate 51 and a second annular plate 52. The first annular plate 51 is coaxially welded to the outer periphery of the kettle body 1, and the second annular plate 52 is coaxially welded to the outer periphery of the top opening of the kettle body 1; the first annular plate 51 is overlapped on the second annular plate 52, and the first annular plate 51 and the second annular plate 52 are connected and fixed by a number of bolts and nuts, so as to achieve the sealing of the top area of the jacket gap and the limited fixation of the kettle body 1 at the same time, which is conducive to the uniform distribution of the heat-conducting gap between the kettle body 1 and the kettle jacket 3.
[0041] An annular sealing ring 53 is also provided between the first annular plate 51 and the second annular plate 52, and several bolts and nuts connecting the first annular plate 51 and the second annular plate 52 are located on the outer periphery of the annular sealing ring 53; a first annular groove 54 and a second annular groove 55 are respectively opened on the opposite sides of the first annular plate 51 and the second annular plate 52 corresponding to the annular sealing ring 53, and the top and bottom ends of the annular sealing ring 53 are respectively embedded in the first annular groove 54 and the second annular groove 55, which is conducive to further improving the sealing performance of the connection between the first annular plate 51 and the second annular plate 52.
[0042] Reference Figure 2 and Figure 3 The material conveying pipe 4 is spirally coiled around the outer periphery of the kettle body 1, which is beneficial to increase the contact area between the material conveying pipe 4 and the heat-conducting medium in the gap of the jacket, so that the material flowing through the material conveying pipe 4 can better exchange heat with the heat-conducting medium.
[0043] Reference Figure 3 and Figure 4The feed end 41 and the discharge end 42 of the material conveying pipe 4 are both passed through and fixed to the first annular plate 51. The discharge end 42 of the material conveying pipe 4 is connected to the top of the outer periphery of the kettle body 1, so that the connection between the material conveying pipe 4 and the kettle body 1 is located at the top of the kettle body 1, so that the material flowing out through the discharge end 42 of the material conveying pipe 4 can flow into the kettle body 1 through the top of the kettle body 1. This helps to avoid the situation where the discharge end 42 of the material conveying pipe 4 is easily blocked by the existing material in the kettle body 1 due to the discharge end 42 of the material conveying pipe 4 being located at the bottom of the kettle body 1, thereby affecting the smoothness of the discharge of the material from the discharge end 42 of the material conveying pipe 4. The section of the material conveying pipe 4 located outside the first annular plate 51 is wrapped with a thermal insulation cotton layer 421, which helps to reduce the heat loss when the subsequent material flows through this area. By passing the feed end 41 of the material conveying pipe 4 through and fixing it to the first annular plate 51, there is no need to open a hole on the outer periphery of the reactor jacket 3, so that the feed end 41 of the material conveying pipe 4 can be located outside the jacket gap. At the same time, the connection and fixation between the material conveying pipe 4 and the reactor body 1 are achieved. When the reactor body 1 is installed in the reactor jacket 3, the material conveying pipe 4 can be fed into the reactor jacket 3 together, which is conducive to reducing the overall installation difficulty of the stirred reactor.
[0044] Reference Figure 4 and Figure 5 Several brackets 12 are vertically welded to the outer periphery of the kettle body 1, corresponding to the coiled sections of the material conveying pipe 4. These brackets 12 are evenly distributed axially around the kettle body 1. The coiled sections of the material conveying pipe 4 are fixed to the brackets 12 via several U-shaped pipe clamps 13. The brackets 12 cooperate with the several U-shaped pipe clamps to securely support the material conveying pipe 4 on the outer periphery of the kettle body 1. At the same time, a gap is left between the outer periphery of the coiled section of the material conveying pipe 4 and the outer periphery of the kettle body 1, allowing the heat-conducting medium in the subsequent jacket gap to better contact the coiled section of the material conveying pipe 4, thereby facilitating uniform heating of the material flowing through the material conveying pipe 4.
[0045] The bracket 12 is evenly welded with a number of limit seats 14 along the vertical direction. The limit seats 14 extend in a direction away from the bracket 12. A universal ball 15 is installed at the end of the limit seat 14 away from the bracket 12. The universal ball 15 is arranged to abut against the inner periphery of the kettle sleeve 3. Through the arrangement of the limit seats 14 and the universal ball 15, on the one hand, during the installation stage of the kettle body 1, the limit seats 14 on the brackets 12 can cooperate with the universal ball 15 to guide and position the kettle body 1, so that the kettle body 1 connected to the material conveying pipe 4 can be smoothly placed into the kettle body 1, and the U-shaped pipe clamp 13 on the bracket 12 on the outer periphery of the kettle body 1 and the coil of the material conveying pipe 4 are restricted from contacting the inner periphery of the kettle sleeve 3 during the process of lowering the kettle body 1 into the kettle sleeve 1. At the same time, after the kettle body 1 is installed in place, the kettle body 1 can be supported and limited by the limit seat 14 and the universal ball 15 to maintain the uniform distribution of the jacket gap between the kettle body 1 and the kettle sleeve 3, thereby reducing the displacement of the kettle body 1 due to external loads or impacts during subsequent use, resulting in changes in the jacket gap or uneven distribution of the jacket gap.
[0046] Reference Figure 2 and Figure 6 A number of support rods 33 are vertically welded to the bottom of the inner cavity of the kettle jacket 3, and the top ends of the support rods 33 are all in contact with the bottom of the inner cavity of the kettle body 1. The kettle body 1 is auxiliary supported by a number of support rods 33. On the one hand, it is beneficial to maintain a uniform distribution of the jacket gap between the kettle body 1 and the kettle jacket 3. On the other hand, it is beneficial to improve the stress condition at the connection between the kettle body 1 and the first annular plate 51.
[0047] The implementation principle of the embodiment of this application is as follows: The heat-conducting medium inlet pipe 31 and the heat-conducting medium outlet pipe 32 are used to circulate the heat-conducting medium into the jacket gap between the kettle body 1 and the kettle jacket 3. While the kettle body 1 is preheated by the heat-conducting medium, the material to be processed is conveyed into the conveying pipe through the feed end 41 of the material conveying pipe 4 through a centrifugal pump and other equipment. In the process of flowing through the coil section of the material conveying pipe 4 located in the jacket gap, the material exchanges heat with the heat-conducting medium in the jacket gap and finally flows into the kettle body 1 through the discharge end 42; the cross-preheating of the kettle body 1 and the material by the heat-conducting medium in the jacket is achieved, which is beneficial for the material to be close to the reaction temperature before entering the kettle body 1, thereby shortening the time for the subsequent material entering the kettle body 1 to reach the reaction temperature, and effectively improving the processing efficiency of the stirred reactor.
[0048] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.
Claims
1. A cross preheating stirred reactor, characterized in that: It comprises a kettle body (1), a kettle cover (2) and a kettle jacket (3); The kettle cover (2) is supported at the top opening of the kettle body (1); The kettle jacket (3) is sleeved on the outer periphery of the kettle body (1), and a jacket gap is formed between the kettle jacket (3) and the kettle body (1). The kettle jacket (3) is connected to a heat transfer medium inlet pipe (31) and a heat transfer medium outlet pipe (32), and both the heat transfer medium inlet pipe (31) and the heat transfer medium outlet pipe (32) are in communication with the jacket gap. A material conveying pipe (4) is provided on the outer periphery of the kettle body (1), the material conveying pipe (4) is located in the jacket gap, and the two ends of the material conveying pipe (4) are respectively a feed end (41) and a discharge end (42), the feed end (41) of the material conveying pipe (4) is located outside the jacket gap, and the discharge end (42) of the material conveying pipe (4) is connected to the kettle body (1).
2. A cross preheating stirred reactor according to claim 1, characterized in that: The material conveying pipe (4) is in the shape of a spiral coil, and the material conveying pipe (4) is sleeved on the outer periphery of the kettle body (1).
3. A cross preheating stirred reactor according to claim 2, characterized in that: A sealing assembly (5) is provided between the kettle body (1) and the kettle jacket (3), and the sealing assembly (5) is used to seal the top of the jacket gap; the sealing assembly (5) comprises a first annular plate (51) and a second annular plate (52), the first annular plate (51) being coaxially connected to the outer periphery of the top of the kettle body (1); the second annular plate (52) being coaxially connected to the outer periphery of the top port of the kettle jacket (3), the first annular plate (51) being overlapped on the upper surface of the second annular plate (52), and the first annular plate (51) and the second annular plate (52) being connected and fixed by a plurality of bolts and nuts.
4. A cross preheating stirred reactor according to claim 2, characterized in that: The point where the discharge end (42) of the material conveying pipe (4) communicates with the kettle body (1) is located at the top of the kettle body (1).
5. The cross-preheating stirred reactor according to claim 3, characterized in that: The feed end (41) of the material conveying pipe (4) is passed through and fixed to the first annular plate (51).
6. The cross-preheating stirred reactor according to claim 5, characterized in that: A plurality of brackets (12) are protrudingly provided on the outer periphery of the kettle body (1) corresponding to the material conveying pipe (4), and the brackets (12) are connected to the coil ends of the material conveying pipe (4) via a plurality of U-shaped pipe clamps (13).
7. The cross-preheating stirred reactor according to claim 3, characterized in that: A plurality of support rods (33) are supported on the bottom of the inner cavity of the kettle jacket (3), and the support rods (33) are arranged in contact with the bottom of the outer periphery of the kettle body (1).
8. The cross-preheating stirred reactor according to claim 6, characterized in that: A plurality of limiting seats (14) are convexly provided on the outer periphery of the bracket (12); a universal ball (15) is installed at one end of the limiting seat (14) away from the bracket (12); and the universal ball (15) is arranged in contact with the inner periphery of the kettle jacket (3).