Efficient spiral tubular reactor for continuous flow reaction
By designing a high-efficiency spiral tube reactor, the problems of cumbersome operation and low reaction efficiency of the continuous flow reactor in the prior art are solved, and the continuous flow of reactants and the continuous progress of multi-step reactions are achieved, which improves the reaction rate, yield and the safety of the reactor.
Patent Information
- Application Number
- CN202421841656.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-31
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2034-07-31
AI Technical Summary
After the initial reaction is completed, the existing continuous flow reactor needs to discharge the reaction raw materials and then transfer them to the next reactor for the next reaction. There are problems such as inconvenient operation and the equipment needs to be stopped, which seriously affects the reaction efficiency.
A high-efficiency spiral tube reactor is designed, and by setting the reactor body into a spiral tube structure, the heat exchange area is increased, the heat exchange efficiency is improved, and the reaction control is carried out by setting up a thermometer and a pressure gauge. At the same time, a filter is set up to prevent catalyst from overflowing, and a continuous multi-step reaction is achieved through a modular design.
The continuous flow of reactants is achieved, the reaction rate and yield is improved, the heat exchange efficiency is improved, the service life of the catalyst is extended, the uniformity and stability of the reaction is ensured, and the safety and adaptability of the reactor is improved.
Smart Images
Figure CN222872128U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of chemical equipment, in particular to a high-efficiency spiral tube reactor for continuous flow reaction. Background Art
[0002] Continuous flow reaction is a chemical reaction technology that achieves efficient chemical synthesis by feeding the reactants into the reactor in a continuous manner, reacting under specific conditions, and then immediately removing the products. Compared with traditional intermittent reactions, continuous flow reactions have many advantages, including better mass and heat transfer efficiency, higher safety, easy automation control, and more flexible scale-up. At present, continuous flow reactions have been widely used in many fields such as pharmaceuticals, fine chemicals, and organic synthesis. Especially in the pharmaceutical industry, they are used for the synthesis of drug molecules, the preparation of chiral compounds, and the use of catalysts.
[0003] The types of continuous flow reactors mainly include: 1. Microchannel reactor: It has micron-level channels and can achieve extremely high mass transfer and heat transfer efficiency. 2. Stirred tank reactor: It is similar to the traditional stirred tank, but adopts continuous feeding and discharging methods. 3. Fixed bed reactor: The reactants pass through a fixed bed layer filled with catalysts, which is suitable for catalytic reactions. 4. Membrane reactor: It uses membrane technology to separate reactants and products to achieve continuous separation and recovery. However, after the initial reaction of the above-mentioned reactor, the reaction raw materials need to be discharged and then transferred to the next reactor for the next reaction. There are problems such as inconvenient operation and the need to stop the equipment, which seriously affects the reaction efficiency. Utility Model Content
[0004] The utility model aims to provide a high-efficiency spiral tube reactor for continuous flow reaction, so as to solve the problems of complicated operation steps and low reaction efficiency in the continuous flow reactor in the prior art.
[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a high-efficiency spiral tubular reactor for continuous flow reaction, comprising a plurality of spiral tubular reactor bodies arranged in series, a connecting pipe connecting two adjacent spiral tubular reactor bodies, a filter screen arranged in the connecting pipe, and a thermometer and a pressure gauge arranged at the connecting pipe.
[0006] The principle and advantage of this solution are: in actual application, this technical solution can increase the heat exchange area and improve the heat exchange efficiency by setting the reactor body to a spiral tube structure. In addition, by setting a thermometer and a pressure gauge, it can help control the reaction temperature and pressure, thereby ensuring the uniformity and stability of the reaction. By setting a filter at the connecting pipe, it can effectively prevent the catalyst from overflowing during the reaction process and extend the service life of the catalyst. Not only that, this technical solution divides the entire reactor into a preheating section, a reaction section and a cooling section by connecting multiple spiral tube reactor bodies in series. Its modular design allows it to be flexibly adjusted according to different production needs. Each functional section can be increased, decreased or replaced according to actual needs to adapt to different chemical reaction processes, thereby realizing the continuous progress of multi-step reactions.
[0007] Preferably, as an improvement, a feed pipe and a discharge port are provided at the top of the spiral tubular reactor body, and the feed pipe is connected with a tee.
[0008] In the present technical solution, a feed pipe and a discharge port are provided at the top of each spiral tubular reactor body, which facilitates the transportation of materials on the one hand, and on the other hand, in actual use, reactions can be carried out in each section according to actual needs without restrictions on the feed and discharge.
[0009] Preferably, as an improvement, a lug seat is provided in the middle of the spiral tube reactor body, and the lug seat comprises a bottom plate welded to the reactor body and a rib plate fixed to the bottom plate.
[0010] In the present technical solution, ears are provided on the outside of the spiral tubular reactor body, which supports and fixes the spiral tubular reactor body, and is essential for the safe operation of the reactor. In addition, the provision of ears is also beneficial to the weight distribution of the reactor, preventing the reactor from being deformed or damaged due to excessive local force.
[0011] Preferably, as an improvement, the spiral tubular reactor body arranged at the tail end is connected to the straight-cylindrical reactor, and a connecting pipe is also connected between the spiral tubular reactor body and the straight-cylindrical reactor.
[0012] In the technical solution, a straight-cylinder reactor is provided, which can be used for hydrolysis reaction or as a storage area for feed liquid, and the structural design is reasonable.
[0013] Preferably, as an improvement, the top end of the straight-cylinder reactor is provided with a stud, a gasket and a nut.
[0014] In this technical solution, the connection through the studs and nuts has a convenient structure and is easy to operate.
[0015] Preferably, as an improvement, a discharge port is provided at the bottom end of the straight-cylinder reactor, and a pressure reducing valve is provided at the discharge port.
[0016] In this technical solution, a two-stage pressure reducing valve design is adopted to ensure that the pressure control during discharge is more accurate and safe.
[0017] Preferably, as an improvement, the diameter of the connecting pipe is 23 cm, and the mesh diameter of the filter is 1 cm.
[0018] In the technical solution, by arranging a filter screen of suitable size in the connecting pipe, the catalyst can be effectively prevented from overflowing during the reaction process, thereby extending the service life of the catalyst.
[0019] Preferably, as an improvement, the upper part of the reactor body is provided with a shell-side outlet, and the lower part of the reactor body is provided with a shell-side inlet.
[0020] In the technical solution, the shell side inlet / outlet is used to introduce / discharge the medium. By adopting the bottom-in and top-out method, the residence time of the medium in the reactor can be prolonged, thereby ensuring the adequacy of the reaction.
[0021] Preferably, as an improvement, an ear seat is also provided in the middle of the straight cylindrical reactor.
[0022] In the present technical solution, ears are provided on the outside of the straight-cylindrical reactor body, which supports and fixes the straight-cylindrical reactor body, and is essential for the safe operation of the reactor. In addition, the provision of ears is also beneficial to the weight distribution of the reactor, preventing the reactor from being deformed or damaged due to excessive local force.
[0023] In summary, the beneficial effects of this technical solution are:
[0024] 1. Continuous flow design: The spiral tube design achieves continuous flow of reactants, which helps to increase reaction rate and yield.
[0025] 2. Segmented reaction zone: The interior of the reactor is divided into a preheating section, a reaction section, a cooling section and a series reaction section (such as hydrolysis, etc.). Its modular design allows it to be flexibly adjusted according to different production needs. Each functional section can be increased, decreased or replaced according to actual needs to adapt to different chemical reaction processes, thereby realizing the continuous progress of multi-step reactions.
[0026] 3. High heat exchange efficiency: The spiral tube design increases the heat exchange area, improves the heat exchange efficiency, helps control the reaction temperature, and ensures the uniformity and stability of the reaction.
[0027] 4. Catalyst protection: Each section of the pipe is equipped with a stainless steel filter to effectively prevent the catalyst from overflowing during the reaction and extend the service life of the catalyst.
[0028] 5. Temperature and pressure monitoring: Thermometers and pressure gauges are installed at the connection position to monitor the temperature and pressure inside the reactor in real time, making it easier for the operator to perform precise control.
[0029] 6. Discharge control: The discharge port composed of a two-stage pressure reducing valve can accurately control the pressure and speed of the reactant flow out of the reactor to ensure a smooth transition of the reactant flow.
[0030] 7. Easy to maintain and clean: Due to the modular design of the reactor, each part can be easily disassembled and cleaned, which is convenient for maintenance and replacement.
[0031] 8. Strong adaptability: The reactor structure of this technical solution can be applied to various types of chemical reactions, including gas-gas reaction, liquid-liquid reaction and gas-liquid reaction, and has good versatility.
[0032] 9. Safety: The design takes into account the possible pressure and temperature changes during the reaction process, and improves the safety of the reactor through reasonable design and safety devices.
[0033] 10. Energy saving and high efficiency: By optimizing the internal structure of the reactor, energy loss is reduced, energy utilization efficiency is improved, and production costs are reduced. BRIEF DESCRIPTION OF THE DRAWINGS
[0034] Figure 1 It is a front view of the high-efficiency spiral tubular reactor used for continuous flow reaction of the utility model.
[0035] Figure 2 It is a top view of the high-efficiency spiral tubular reactor used for continuous flow reaction of the utility model.
[0036] Figure 3 It is the front view of the spiral tubular reactor body of the utility model. DETAILED DESCRIPTION
[0037] The following is further described in detail through specific implementations, but the implementation of the utility model is not limited thereto. Unless otherwise specified, the technical means used in the following implementations are conventional means well known to those skilled in the art; the experimental methods used are all conventional methods; the materials, reagents, etc. used can all be obtained from commercial channels.
[0038] The figure marks in the drawings of the specification include: bracket 1, reactor body 2, feed pipe 3, external threaded tee 4, first connecting pipe 5, stainless steel filter screen 6, second connecting pipe 7, third connecting pipe 8, straight reactor 9, pressure reducing valve 10, discharge port 11, gasket 12, stud 13, nut 14, spring washer 15, bolt 16, ear seat 17, shell side inlet 18, shell side outlet 19, pressure gauge 20, thermometer 21.
[0039] Example 1
[0040] Embodiment 1 is basically as attached Figure 1-2 As shown: A high-efficiency spiral tubular reactor for continuous flow reaction, comprising six spiral tubular reactor bodies 2 (reactor bodies I to VI) arranged in series from left to right. Reactor body I is a preheating zone, reactor bodies II to reactor body V are reaction zones, and reactor body VI is a storage zone.
[0041] Combination Figure 3 As shown, the lower part of the reactor body 2 is fixed (welded) with a support bracket 1, the top of the reactor body 2 is provided with a feed pipe 3, the feed pipe 3 is connected with an external threaded tee 4, and the top of the reactor body 2 is also provided with a discharge port. The upper part of the reactor body 2 is provided with a shell side outlet 19, and the lower part of the reactor body 2 is provided with a shell side inlet 18. Spring washers 15 and bolts 16 are provided at the shell side inlet 18 and the shell side outlet 19. The middle part of the reactor body 2 is fixed with an ear seat 17, and the ear seat 17 includes a bottom plate welded to the reactor body 2 and a rib plate fixed to the bottom plate.
[0042] A first connecting pipe 5 is connected between the discharge port of the first reactor body 2 and the feed pipe 3 of the second reactor body 2. A stainless steel filter screen 6 is fixed radially inside the first connecting pipe 5. The diameter of the first connecting pipe 5 is 23 cm, and the mesh diameter of the stainless steel filter screen 6 is 1 cm. A second connecting pipe 7 is connected between the discharge port of the second reactor body 2 and the feed pipe 3 of the third reactor body 2, the discharge port of the third reactor body 2 and the feed pipe 3 of the fourth reactor body 2, the discharge port of the fourth reactor body 2 and the feed pipe 3 of the fifth reactor body 2, and the discharge port of the fifth reactor body 2 and the feed pipe 3 of the sixth reactor body 2. A thermometer 21 and a pressure gauge 20 are provided on the second connecting pipe 7, which can monitor the temperature and pressure inside the reactor in real time.
[0043] The discharge port of the sixth reactor body 2 is connected to the straight-cylindrical reactor 9, and the third connecting pipe 8 is connected between the sixth spiral-tube reactor body 2 and the straight-cylindrical reactor 9. An ear seat 17 is also fixed to the middle of the straight-cylindrical reactor 9, and a stud 13, a gasket 12 and a nut 14 are provided at the top of the straight-cylindrical reactor 9 (where it is connected to the third connecting pipe 8). A discharge port 11 is provided at the bottom of the straight-cylindrical reactor 9, and a pressure reducing valve 10 is provided at the discharge port 11. In this embodiment, a double-stage pressure reducing valve 10 is provided.
[0044] In the present embodiment, during actual use, the operator can feed the feed pipe 3 of the spiral tubular reactor body 2 in a suitable position according to the actual reaction requirements, and introduce the medium at the shell side inlet 18 at the same time. After the reaction of a spiral tubular reactor body 2 is completed, the material can enter the next spiral tubular reactor body 2 along the discharge port to continue the reaction, thereby realizing the continuous progress of multi-step reaction. During the reaction, the temperature and pressure inside the reactor can be monitored in real time by a thermometer 21 and a pressure gauge 20, which is convenient for the operator to carry out precise control. In addition, by the setting of the stainless steel filter 6, the catalyst can be effectively prevented from overflowing during the reaction process, and the service life of the catalyst is extended.
[0045] After the reaction is completed, the final product is discharged from the discharge port 11. The design of the double-stage pressure reducing valve 10 can ensure that the pressure control during the discharge is more accurate and safe.
[0046] The above is only an embodiment of the utility model, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.
Claims
1. A high-efficiency spiral tubular reactor for continuous flow reaction, characterized in that: The invention comprises a plurality of spiral tubular reactor bodies which are arranged in series in sequence. A connecting pipe is provided between two adjacent spiral tubular reactor bodies. A filter screen is provided in the connecting pipe. A thermometer and a pressure gauge are provided at the connecting pipe.
2. A high-efficiency spiral tubular reactor for continuous flow reaction according to claim 1, characterized in that: The top of the spiral tube reactor body is provided with a feed pipe and a discharge port, and the feed pipe is connected with a tee.
3. A high-efficiency spiral tubular reactor for continuous flow reaction according to claim 2, characterized in that: The middle part of the spiral tube reactor body is provided with an ear seat, and the ear seat comprises a bottom plate welded on the reactor body and a rib plate fixed on the bottom plate.
4. A high-efficiency spiral tubular reactor for continuous flow reaction according to claim 3, characterized in that: The spiral tube reactor body arranged at the tail end is connected with the straight tube reactor, and a connecting pipe is also connected between the spiral tube reactor body and the straight tube reactor.
5. A high-efficiency spiral tubular reactor for continuous flow reaction according to claim 4, characterized in that: The top of the straight reactor is provided with a stud, a gasket and a nut.
6. A high-efficiency spiral tubular reactor for continuous flow reaction according to claim 5, characterized in that: The bottom end of the straight-cylinder reactor is provided with a discharge port, and a pressure reducing valve is provided at the discharge port.
7. A high-efficiency spiral tubular reactor for continuous flow reaction according to claim 6, characterized in that: The diameter of the connecting pipe is 23 cm, and the mesh diameter of the filter is 1 cm.
8. A high-efficiency spiral tubular reactor for continuous flow reaction according to claim 7, characterized in that: The upper part of the reactor body is provided with a shell side outlet, and the lower part of the reactor body is provided with a shell side inlet.
9. A high-efficiency spiral tubular reactor for continuous flow reaction according to claim 8, characterized in that: An ear seat is also arranged in the middle of the straight cylindrical reactor.