Disproportionation reaction kettle
By incorporating heating, stirring, reflux, and monitoring components into the reactor, the problem of imprecise heating in existing reactors is solved, achieving uniform heating, homogeneity of reactants, and safety. This addresses the limitations of existing technologies and enables the industrialization of reactor processes.
Patent Information
- Application Number
- CN202423259222.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2034-12-27
AI Technical Summary
Existing reactors are not suitable for industrial disproportionation reactions because they require inaccurate local or total heating, and the differences in reactant concentration and temperature lead to uneven reaction and poor stability.
A disproportionation reactor was designed, comprising a heating component, a stirring component, a reflux component, a monitoring component, and a safety component. The heating component ensures uniform heating of the reactor body, the reflux component controls the concentration and temperature of the reactants, the stirring component ensures uniform mixing of the reactants, the monitoring component precisely controls the reaction conditions, and the safety component prevents excessive pressure.
It achieves uniform heating within the reactor, precise control of reactant concentration and temperature, improves reaction rate and efficiency, reduces local overheating or overcooling, and ensures reaction stability and safety.
Smart Images
Figure CN223669202U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of chemical equipment, concretely relates to a disproportionation reaction kettle. BACKGROUND
[0002] In chemical reaction, if oxidation and reduction occur on the same element in the same oxidation state within the same molecule, and part of the element atom (or ion) is oxidized and another part is reduced, then this self-oxidation and reduction reaction is called disproportionation reaction. Disproportionation reaction is very important in organic synthesis, because it can provide a preparation means for chemists to prepare chiral compounds, which is very important for the synthesis of drugs.
[0003] The reaction kettle on the market is not suitable for the needs of industrial disproportionation reaction, because: 1. partial or overall heating of the reaction kettle is required; 2. the reaction rate is not accurate due to the difference in reactant concentration and local temperature; 3. local overheating or overcooling is common, resulting in poor uniformity and stability of the reaction. SUMMARY
[0004] To solve the above problems, the purpose of the utility model is to provide a disproportionation reaction kettle with reasonable structure, safety and reliability, uniform heating, controllable reaction rate and optimal reaction conditions.
[0005] According to one aspect of the utility model, a disproportionation reaction kettle is provided, comprising: a kettle body, a heating assembly, a stirring assembly, a reflux assembly, a monitoring assembly and a safety assembly. The kettle body is provided with a material port at the bottom. The heating assembly is arranged on the side wall and the bottom of the kettle body. The stirring assembly is installed on the top of the kettle body and extends into the kettle body. The reflux assembly is installed on the top of the kettle body and extends into the kettle body. The safety assembly is arranged on the top of the kettle body. The monitoring assembly is arranged on the top and the side wall of the kettle body. The kettle body is provided with a manhole on the top. The heating assembly ensures uniform heating of the kettle body to prevent local overheating or overcooling. The reflux assembly controls the concentration and temperature of the reactants to keep them under optimal reaction conditions, thereby improving the reaction rate and efficiency. The stirring assembly and the monitoring assembly ensure uniform mixing of the reactants to achieve optimal reaction conditions.
[0006] In some embodiments, the heating assembly includes a first heating part, a second heating part, a third heating part and a fourth heating part. The first heating part is fixedly wound around the bottom of the kettle body. The second and third heating parts are arranged side by side on the outer wall of the kettle body, with the third heating part above the second heating part. The fourth heating part is arranged on the top of the kettle body. The heating assembly is arranged to cover the outer wall of the kettle body, allowing for overall or partial heating as needed to create optimal reaction conditions.
[0007] In some embodiments, the first heating part comprises a first heat-conducting oil inlet, a first half pipe and a first heat-conducting oil outlet, the first half pipe is spirally wound along the bottom of the kettle body, the first heat-conducting oil inlet is connected to one end of the first half pipe and is arranged perpendicularly to the axial direction of the kettle body, and the first heat-conducting oil outlet is connected to the other end of the first half pipe and is arranged in parallel to the axial direction of the kettle body.
[0008] The second heating part comprises a second heat-conducting oil inlet, a second half pipe and a second heat-conducting oil outlet, the second half pipe is spirally wound upwards along the outer wall of the kettle body, the second heat-conducting oil inlet is connected to one end of the second half pipe and is arranged perpendicularly to the axial direction of the kettle body, the second heat-conducting oil outlet is connected to the other end of the second half pipe and is arranged in parallel to the axial direction of the kettle body, and the bottom of the second half pipe is attached to the top of the first half pipe.
[0009] The third heating part comprises a third heat-conducting oil inlet, a third half pipe and a third heat-conducting oil outlet, the third half pipe is spirally wound upwards along the outer wall of the kettle body, the third heat-conducting oil inlet is connected to one end of the third half pipe and is arranged perpendicularly to the axial direction of the kettle body, the third heat-conducting oil outlet is connected to the other end of the third half pipe and is arranged in parallel to the axial direction of the kettle body, and the bottom of the third half pipe is attached to the top of the second half pipe.
[0010] The fourth heating part comprises a fourth heat-conducting oil inlet, a fourth half pipe and a fourth heat-conducting oil outlet, the fourth half pipe is vertically spirally wound along the outer wall of the top of the kettle body, the fourth heat-conducting oil inlet is connected to one end of the fourth half pipe and is arranged perpendicularly to the axial direction of the kettle body, the fourth heat-conducting oil outlet is connected to the other end of the fourth half pipe and is arranged in parallel to the axial direction of the kettle body, and the bottom of the fourth half pipe is attached to the top of the third half pipe. By arranging the heating components to cover the outer wall of the kettle body, the kettle body can be heated in whole or in part as needed to create the best reaction conditions.
[0011] In some embodiments, the stirring assembly comprises a motor, a connecting seat, a stirring paddle and a mounting port, the mounting port is connected to the inside of the kettle body, the bottom of the connecting seat is sealingly and fixedly connected to the mounting port, the output end of the motor is connected to the stirring paddle through a shaft coupling, and the stirring paddle is arranged on the connecting seat. The reaction mixture is uniformly mixed by the stirring assembly to achieve the best reaction conditions, and the temperature in the kettle body tends to be uniform through the stirring blades.
[0012] In some embodiments, the reflux assembly comprises a reflux port, a reflux pipe, a first support and a second support, the first support and the second support are installed on the inner wall of the kettle body, the reflux port is arranged on the top of the kettle body, the top of the reflux pipe is connected to the reflux port, the bottom of the reflux pipe extends to the bottom of the inside of the kettle body, and the reflux pipe is fixed on the first support and the second support. By extending the reflux pipe to the bottom of the inside of the kettle body, the concentration of the reaction mixture can be controlled by adding the reaction mixture, and the reflux port uniformly distributes the reaction mixture in the reaction kettle, reduces local overheating or overcooling, and improves the yield.
[0013] In some embodiments, the monitoring assembly comprises a pressure gauge arranged on the top of the kettle body, a remote pressure gauge and a thermometer arranged on the side wall of the kettle body. The pressure gauge, the remote pressure gauge and the thermometer facilitate accurate control of the reaction conditions in the kettle.
[0014] In some embodiments, the safety assembly comprises a safety valve, a vent pipe and a gas outlet, all of which are arranged on the top of the kettle body and communicate with the interior of the kettle body. The safety valve, the vent pipe and the gas outlet prevent the kettle body from being damaged due to excessive pressure.
[0015] In some embodiments, the top of the kettle body is provided with a nitrogen inlet, a catalyst inlet and at least one standby inlet, which communicate with the interior of the kettle body.
[0016] The utility model has the advantages of reasonable structure, safety and reliability, uniform heating, controllable reaction rate and provision of optimal reaction conditions. The utility model ensures uniform heating of the kettle body and prevents local overheating or overcooling by arranging the heating assembly. The concentration and temperature of the reactants are controlled by the reflux assembly so that the reactants are always under optimal reaction conditions, thereby improving the reaction rate and reaction efficiency. The reactants are uniformly mixed by the stirring assembly and the monitoring assembly to achieve optimal reaction conditions. The heating assembly is arranged to cover the outer wall of the kettle body so that the kettle body can be heated in whole or in part as required to create optimal reaction conditions. The reactants are uniformly mixed by the stirring assembly to achieve optimal reaction conditions, and the temperature in the kettle body tends to be uniform due to the relative rotation of the stirring blades. The reflux pipe is extended to the bottom of the interior of the kettle body to facilitate the addition of reactants and control of the concentration of the reactants. The reflux inlet uniformly distributes the reactants in the reaction kettle, reduces local overheating or overcooling and improves the yield. The pressure gauge, the remote pressure gauge and the thermometer facilitate accurate control of the reaction conditions in the kettle. The safety valve, the vent pipe and the gas outlet prevent the kettle body from being damaged due to excessive pressure. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 Fig. 1 is a structural schematic view of a disproportionation reaction kettle according to the utility model;
[0018] Figure 2 Fig. 2 is a top view of the disproportionation reaction kettle according to the utility model;
[0019] Figure 3 Fig. 3 is a structural schematic view of a first half pipe of the disproportionation reaction kettle according to the utility model;
[0020] Figure 4 Fig. 4 is a distribution schematic view of a fourth half pipe of the disproportionation reaction kettle according to the utility model;
[0021] Figure 5 Fig. 5 is a structural schematic view of a first support of the disproportionation reaction kettle according to the utility model. Detailed Implementation
[0022] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings. However, it should be noted that these embodiments are not intended to limit the present invention. Equivalent transformations or substitutions in function, method or structure made by those skilled in the art based on these embodiments are all within the protection scope of the present invention.
[0023] In the description of this utility model, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be interpreted broadly. For example, they can refer to mechanical or electrical connections, or internal connections between two components. They can be direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the terms according to the specific circumstances.
[0024] like Figure 1 and Figure 2 As shown, the disproportionation reactor of this utility model includes: a reactor body 1, a heating assembly 2, a stirring assembly 3, a reflux assembly 4, a monitoring assembly 5, and a safety assembly 6. A material inlet 7 is provided at the bottom of the reactor body 1. The heating assembly 2 is located on the side wall and bottom of the reactor body 1. The stirring assembly 3 is installed at the top of the reactor body 1 and extends into the reactor body 1. The reflux assembly 4 is installed at the top of the reactor body 1 and extends into the reactor body 1. The safety assembly 6 is located at the top of the reactor body 1. The monitoring assembly 5 is located at the top and side wall of the reactor body 1. A manhole 8 is provided at the top of the reactor body 1. The heating assembly 2 ensures uniform heating of the reactor body 1 and prevents localized overheating or overcooling. The reflux assembly 4 controls the concentration and temperature of the reactants, keeping them under optimal reaction conditions, thereby improving the reaction rate and efficiency. The stirring assembly 3 and the monitoring assembly 5 ensure uniform mixing of the reactants to achieve optimal reaction conditions.
[0025] This utility model needs to be inspected periodically in accordance with the requirements of TSG 21-2016. When the corrosion amount reaches the specified value in advance during the use of the equipment, it should be stopped immediately. At the same time, the chemical composition (smelting analysis) of all Q235B steel welded to the pressure-bearing components of the equipment should comply with the provisions of GB / T 700-2006 "Carbon Structural Steel". However, the phosphorus and sulfur content in the steel plate quality certificate should meet the requirements of P≤0.035% and S≤0.035%.
[0026] The heating assembly 2 includes a first heating section 21, a second heating section 22, a third heating section 23, and a fourth heating section 24. The first heating section 21 is fixedly wound around the bottom of the vessel body 1. The second heating section 22 and the third heating section 23 are arranged side by side on the outer wall of the vessel body 1, with the third heating section 23 located above the second heating section 22. The fourth heating section 24 is located on the top of the vessel body 1. By respectively setting the heating assembly 2 to cover the outer wall of the vessel body 1, all or partial heating can be performed as needed to create optimal reaction conditions.
[0027] The first heating section 21 includes: a first heat transfer oil inlet 211, a first half-pipe 212 and a first heat transfer oil outlet 213. The first half-pipe 212 is spirally wound along the bottom of the vessel body 1. The first heat transfer oil inlet 211 is connected to one end of the first half-pipe 212 and is arranged perpendicular to the axial direction of the vessel body 1. The first heat transfer oil outlet 213 is connected to the other end of the first half-pipe 212 and is arranged parallel to the axial direction of the vessel body 1.
[0028] The second heating section 22 includes: a second heat transfer oil inlet 221, a second half-pipe 222, and a second heat transfer oil outlet 223. The second half-pipe 222 spirals upward and winds along the outer wall of the vessel body 1. The second heat transfer oil inlet 221 is connected to one end of the second half-pipe 222 and is arranged perpendicular to the axial direction of the vessel body 1. The second heat transfer oil outlet 223 is connected to the other end of the second half-pipe 222 and is arranged parallel to the axial direction of the vessel body 1. The bottom of the second half-pipe 222 is attached to the top of the first half-pipe 212.
[0029] The third heating section 23 includes: a third heat transfer oil inlet 231, a third half-pipe 232 and a third heat transfer oil outlet 233. The third half-pipe 232 spirals upward and winds along the outer wall of the vessel body 1. The third heat transfer oil inlet 231 is connected to one end of the third half-pipe 232 and is arranged perpendicular to the axial direction of the vessel body 1. The third heat transfer oil outlet 233 is connected to the other end of the third half-pipe 232 and is arranged parallel to the axial direction of the vessel body 1. The bottom of the third half-pipe 232 is attached to the top of the second half-pipe 222.
[0030] like Figure 3 As shown, during implementation, the first half-tube 212, the second half-tube 222, the third half-tube 232, and the fourth half-tube 242 are made by splitting round tubes in the middle, then bending them to fit the surface of the vessel body. Using semi-tubes is convenient and ensures a larger contact area with the vessel body 1, resulting in better heating. After bending, the tube walls are welded to the outer wall of the vessel body 1 using H08Mn2SiA welding wire in an argon arc welding process. The welded half-tubes require a MT100% inspection and a hydraulic test with a pressure greater than 3MPa. It is important to note that the welding of the first half-tube 212, the second half-tube 222, the third half-tube 232, and the fourth half-tube 242 should only proceed after the inner cylinder test is passed. The optimal spacing between adjacent half-tubes is 150mm.
[0031] As shown in Figure 4 The fourth heating assembly 24 includes a fourth heat conducting oil inlet 241, a fourth half pipe 242 and a fourth heat conducting oil outlet 243. The fourth half pipe 242 is vertically and spirally wound along the outer wall of the top of the kettle body 1. The fourth heat conducting oil inlet 241 is connected to one end of the fourth half pipe 242 and is arranged perpendicular to the axial direction of the kettle body 1. The fourth heat conducting oil outlet 243 is connected to the other end of the fourth half pipe 242 and is arranged parallel to the axial direction of the kettle body 1. The bottom of the fourth half pipe 242 is attached to the top of the third half pipe 232. By arranging the heating assembly 2 to cover the outer wall of the kettle body 1, the kettle body 1 can be heated in whole or in part as needed to create optimal reaction conditions. During the implementation process, due to the distribution of the pipe openings above the kettle body 1, if the fourth half pipe 242 is spirally wound, some parts cannot be heated due to the influence of the pipe openings. By vertically fixing the fourth half pipe 242, the kettle body 1 is more flexible to fit the top of the kettle body 1, and the heating part is more.
[0032] The surface temperature of the heat conducting oil heating pipe is high, providing a large heating area, allowing the heated medium to quickly warm up, greatly shortening the heating time and improving the heating efficiency. At the same time, the heat is evenly distributed, providing a stable and reliable heating source for the heated medium. The heat conducting oil heating method does not directly contact air, avoiding oxidation. Compared with traditional heating methods, the service life of the heat conducting oil heating pipe is longer.
[0033] The stirring assembly 3 includes a motor 31, a connecting seat 32, a stirring paddle 33 and a mounting port 34. The mounting port 34 is connected to the inside of the kettle body 1. The bottom of the connecting seat 32 is sealingly and fixedly connected to the mounting port 34. The output end of the motor 31 is connected to the stirring paddle 33 through a shaft coupling. The stirring paddle 33 is arranged on the connecting seat 32. The stirring assembly 3 can mix the reactants uniformly to achieve optimal reaction conditions. At the same time, the temperature in the kettle body 1 tends to be uniform through the stirring blades.
[0034] The reflux assembly 4 includes a reflux port 41, a reflux pipe 42, a first bracket 43 and a second bracket 44. The first bracket 43 and the second bracket 44 are installed on the inner wall of the kettle body 1. The reflux port 41 is arranged at the top of the kettle body 1. The top of the reflux pipe 42 communicates with the reflux port 41. The bottom of the reflux pipe 42 extends to the bottom inside the kettle body 1. The reflux pipe 42 is fixed on the first bracket 43 and the second bracket 44. The concentration and temperature of the reactants are controlled through the reflux port 41, so that they are always in the best reaction conditions, thereby improving the reaction rate and reaction efficiency. Because the reaction rate is closely related to the concentration and temperature of the reactants, the reflux method can ensure that these parameters remain within the optimal range. At the same time, it can maintain reaction uniformity: the reflux port 41 makes the reactants uniformly distributed in the reaction kettle, reducing the risk of local overheating or overcooling, thereby ensuring the uniformity and stability of the reaction, which is particularly important for chemical reactions that require a long reaction time, can effectively avoid the occurrence of side reactions, and improve product quality. Further, the concentration of the reactants can be controlled: by controlling the reflux ratio and flow rate, the concentration of the reactants is adjusted to ensure the stability and efficiency of the reaction. The reflux ratio is usually between 30% and 50%, and too high or too low will affect the stability and uniformity of the reaction. In addition, the reflux port 41 can control the reaction temperature, reduce the volatilization and leakage of the reactants, and protect the safety of the equipment and the environment. At the same time, by recycling and utilizing the volatilized reactants, waste gas emissions can be reduced.
[0035] As shown in Figure 5 The first bracket 43 and the second bracket 44 have the same structure, which includes a base plate, an angle steel and a horn sleeve. The base plate is fitted with the arc of the inner wall of the kettle body 1. The angle steel is fixedly connected with the base plate and the horn sleeve. The base plate is welded and fixed on the inner wall of the kettle body 1. After the reflux port 41 and the reflux pipe 42 are fixed, the horn sleeve facilitates the insertion of the reflux pipe 42 and limits the position of the reflux pipe 42.
[0036] The monitoring assembly 5 includes a pressure gauge 51 arranged at the top of the kettle body 1, a remote pressure gauge 52 and a thermometer 53 arranged on the side wall of the kettle body 1. The pressure gauge 51, the remote pressure gauge 52 and the thermometer 53 facilitate precise control of the reaction conditions in the kettle. The remote pressure gauge 52 monitors the pressure change in the kettle body 1 in real time and transmits the monitored pressure data to the controller or control room through a signal converter.
[0037] The safety assembly 6 includes a safety valve 61, a vent pipe 62 and a gas outlet 63, which are all installed on the top of the kettle body 1 and communicate with the inside of the kettle body 1. The safety valve 61, the vent pipe 62 and the gas outlet 63 prevent the kettle body 1 from causing safety hazards due to excessive pressure.
[0038] A nitrogen inlet 11, a catalyst inlet 12 and at least one standby inlet 13 are arranged on the top of the kettle body 1 and communicate with the interior of the kettle body 1. Nitrogen and catalyst are added to the kettle body 1 through the nitrogen inlet 11 and the catalyst inlet 12.
[0039] The above merely describes some embodiments of the present application, and it should be pointed out that, for those skilled in the art, other modifications and improvements can be made without departing from the inventive concept of the present application, and these all belong to the protection scope of the present application.
Claims
1. A disproportionation reactor characterized by, It comprises a kettle body, a heating assembly, a stirring assembly, a reflux assembly, a monitoring assembly and a safety assembly, the kettle body is provided with a material inlet at the bottom, the heating assembly is arranged on the side wall and the bottom of the kettle body, the stirring assembly is installed on the top of the kettle body and extends into the kettle body, the reflux assembly is installed on the top of the kettle body and extends into the kettle body, the safety assembly is arranged on the top of the kettle body, the monitoring assembly is arranged on the top and the side wall of the kettle body, and the manhole is arranged on the top of the kettle body. The heating assembly comprises a first heating part, a second heating part, a third heating part and a fourth heating part, the first heating part is fixedly wound on the bottom of the kettle body, the second and third heating parts are arranged side by side on the outer wall of the kettle body, and the third heating part is arranged above the second heating part, and the fourth heating part is arranged on the top of the kettle body.
2. The disproportionation reactor according to claim 1, characterized in that The first heating part comprises a first heat-conducting oil inlet, a first half pipe and a first heat-conducting oil outlet, the first half pipe is spirally wound along the bottom of the kettle body, the first heat-conducting oil inlet is connected to one end of the first half pipe and arranged vertically to the axial direction of the kettle body, and the first heat-conducting oil outlet is connected to the other end of the first half pipe and arranged parallel to the axial direction of the kettle body.
3. The disproportionation reactor according to claim 2, characterized in that The second heating part comprises a second heat-conducting oil inlet, a second half pipe and a second heat-conducting oil outlet, the second half pipe is spirally wound upward along the outer wall of the kettle body, the second heat-conducting oil inlet is connected to one end of the second half pipe and arranged vertically to the axial direction of the kettle body, the second heat-conducting oil outlet is connected to the other end of the second half pipe and arranged parallel to the axial direction of the kettle body, and the bottom of the second half pipe is attached to the top of the first half pipe. The third heating part comprises a third heat-conducting oil inlet, a third half pipe and a third heat-conducting oil outlet, the third half pipe is spirally wound upward along the outer wall of the kettle body, the third heat-conducting oil inlet is connected to one end of the third half pipe and arranged vertically to the axial direction of the kettle body, the third heat-conducting oil outlet is connected to the other end of the third half pipe and arranged parallel to the axial direction of the kettle body, and the bottom of the third half pipe is attached to the top of the second half pipe. The fourth heating part comprises a fourth heat-conducting oil inlet, a fourth half pipe and a fourth heat-conducting oil outlet, the fourth half pipe is vertically spirally wound along the outer wall of the top of the kettle body, the fourth heat-conducting oil inlet is connected to one end of the fourth half pipe and arranged vertically to the axial direction of the kettle body, the fourth heat-conducting oil outlet is connected to the other end of the fourth half pipe and arranged parallel to the axial direction of the kettle body, and the bottom of the fourth half pipe is attached to the top of the third half pipe. The stirring assembly comprises a motor, a connecting seat, a stirring paddle and a mounting port, the mounting port communicates with the inside of the kettle body, the bottom of the connecting seat is sealingly and fixedly connected with the mounting port, the output end of the motor is connected with the stirring paddle through a shaft coupling, and the stirring paddle is arranged on the connecting seat.
4. The disproportionation reactor according to claim 3, characterized in that The reflux assembly comprises a reflux port, a reflux pipe, a first support and a second support, the first and second supports are installed on the inner wall of the kettle body, the reflux port is arranged on the top of the kettle body, the top of the reflux pipe communicates with the reflux port, the bottom of the reflux pipe extends to the bottom of the inside of the kettle body, and the reflux pipe is fixed on the first and second supports.
5. The disproportionation reactor according to any one of claims 1 to 4, characterized in that 6. The disproportionation reactor according to claim 5, characterized in that The monitoring assembly comprises a pressure gauge arranged on the top of the kettle body and a remote pressure gauge, and a thermometer arranged on the side wall of the kettle body.
7. The disproportionation reactor according to claim 6, characterized in that The safety assembly comprises a safety valve, a vent pipe and a gas outlet, which are all arranged on the top of the kettle body and communicate with the inside of the kettle body.
8. The disproportionation reactor according to claim 7, characterized in that The top of the kettle body is provided with a nitrogen inlet, a catalyst inlet and at least one standby inlet, which communicate with the inside of the kettle body.