A chemical reaction system equipped with a spiral tube reactor
By combining a micro-mixer and a spiral reactor in a chemical reaction system, the problems of low cooling efficiency, insufficient contact of reactants, and low heat transfer efficiency in batch reactors have been solved, achieving a highly efficient and safe chemical reaction process and improving product quality and production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG UNIV OF PETROCHEMICAL TECH
- Filing Date
- 2025-04-25
- Publication Date
- 2026-05-26
AI Technical Summary
In synthetic chemical reactions, batch reactors suffer from problems such as low cooling efficiency, insufficient contact of reactants, low heat transfer efficiency, high energy consumption, and poor safety. Existing micromixers have limited premixing effects and cannot solve these problems.
The chemical reaction system combines a micro mixer and a spiral reactor. The micro mixer enables rapid mixing, while the spiral reactor provides efficient heat exchange. Combined with a cooling device, the reaction time is shortened and the heat transfer efficiency is improved. An ultrasonic generator is used to prevent clogging, and temperature and pressure detection components are installed to ensure safety.
It improves the uniformity and stability of the reaction, shortens the reaction time, reduces energy consumption and cost, enhances heat transfer efficiency, and ensures the safety of the chemical reaction and product quality.
Smart Images
Figure CN224271206U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of chemical reaction equipment technology, and more specifically, to a chemical reaction system equipped with a spiral tube reactor. Background Technology
[0002] Currently, in the field of synthetic chemistry, batch reactors are widely used for the synthesis and preparation of relevant chemical components. However, batch reactors have several drawbacks: 1) When there is significant exothermic reaction during the synthesis process, the cooling efficiency is low, affecting the quality and yield of the product; 2) Insufficient contact of reactants requires constant stirring, resulting in long reaction times, uneven product distribution, and increased difficulty and cost of post-processing; 3) The reactor has low heat transfer efficiency, high energy consumption, and poor safety, posing hazards to personnel and equipment.
[0003] Currently, in order to ensure sufficient contact between reactants, some researchers have proposed using micromixers to premix them. Micromixers employ a microporous structure inside, which, combined with the forced conduction of the fluid-conducting medium, enables reactants to complete molecular-level mixing within milliseconds. In other words, the residence time of reactants in the micromixer is extremely short, and the reactants undergo almost only physical mixing without any chemical reaction.
[0004] However, the premixing effect is limited and not enough to overcome the above problems. Utility Model Content
[0005] The present invention aims to overcome at least one of the defects of the prior art and provide a chemical reaction system equipped with a spiral tube reactor to solve the problems of low heat transfer efficiency and long reaction time in the process of synthetic chemical reaction.
[0006] The technical solution adopted by this utility model is to provide a chemical reaction system equipped with a spiral tube reactor, including a micro mixer, a spiral tube reactor and a cooling device connected in sequence; the input end of the micro mixer is connected to a first feed pipe, a second feed pipe and a third feed pipe for entering the interior of the micro mixer.
[0007] This chemical reaction system is particularly suitable for chemical synthesis reactions involving two reactants. The first and second feed lines introduce the two reactants respectively, while the third feed line introduces a fluid-conducting medium. Through the conduction of the fluid-conducting medium, the reactants are rapidly mixed within a micro-mixer with a slightly smaller internal pipe aperture. They are then introduced into a spiral tube reactor with a slightly larger internal pipe aperture for stabilization and reaction. The heat released during the synthesis reaction is efficiently exchanged through the spiral tube reactor, avoiding overheating that could lead to adverse side reactions and safety risks. This also significantly shortens the reaction time and improves preparation efficiency. The reaction liquid exiting the spiral tube reactor is then passed through a cooling device to quench the reaction through rapid cooling and is further transported to downstream processes for post-processing to obtain the target product. This chemical reaction system achieves two-step mixing through a micro-mixer and a spiral tube reactor, improving the uniformity and stability of the reaction, reducing safety risks during the reaction process, and significantly improving heat exchange efficiency, effectively solving the problems of low heat transfer efficiency and long reaction times in chemical reactions.
[0008] Furthermore, the micro mixer is provided with a first inlet, a second inlet, and a third inlet for connecting to the first feed line, the second feed line, and the third feed line, respectively, with the third inlet located between the first inlet and the second inlet.
[0009] This solution can shorten the connection path between the third feed pipe and the first and second feed pipes, and achieve synchronous conduction of the two raw materials through only one fluid conduction medium, which helps to simplify the overall structure of the chemical reaction system and improve the conduction efficiency.
[0010] Furthermore, the micropores inside the micromixer have a diameter of 5-200 μm.
[0011] The pore size designed in this scheme helps to accelerate the thorough mixing of the raw material solutions, while avoiding blockage caused by precipitates generated during the reaction due to excessively small pore size, thus ensuring a continuous and efficient synthesis reaction.
[0012] Furthermore, the cooling device is a cooling pipe.
[0013] Preferably, the length of the cooling pipe is 1-4m, and / or the inner diameter of the cooling pipe is 6-12mm.
[0014] Furthermore, the outer wall of the micro mixer is also provided with an ultrasonic generator for emitting ultrasonic waves into the interior of the micro mixer.
[0015] The ultrasonic generator in this solution can be used to break up the precipitate generated by the mixing reaction in the micromixer in real time, so as to avoid the accumulation of precipitate causing the micropore channel inside the micromixer to shrink or become blocked, thus helping to maintain the continuous and efficient operation of the chemical reaction system.
[0016] Furthermore, the output port of the spiral reactor is connected to a temperature and pressure detection component.
[0017] In this solution, the temperature and pressure parameters of the reaction liquid flowing out of the spiral reactor can be monitored in real time with the help of detection components, which facilitates precise control by operators and ensures the safety and stability of the chemical preparation process.
[0018] Furthermore, a valve component is provided between the spiral reactor and the cooling pipe.
[0019] This solution allows for the adjustment of the flow rate of the reaction liquid into the cooling pipe in the spiral tube reactor via valve components. It also regulates the residence time of the reaction liquid in the spiral tube reactor, achieving more precise control of the reaction process and further promoting the stability and safety of the chemical reaction.
[0020] Preferably, the valve component is a ball valve.
[0021] Ball valves can further improve the accuracy and stability of control.
[0022] Furthermore, the first feed pipe is provided with a first temperature regulating device; and / or, the second feed pipe is provided with a second temperature regulating device; and / or, the spiral tube reactor is provided with a third temperature regulating device.
[0023] This solution, through a first temperature regulating device and / or a second temperature regulating device and / or a third temperature regulating device, can achieve precise adjustment of the temperature during the introduction of reaction raw materials and / or the reaction environment temperature inside the spiral reactor, further improving the controllability of the chemical reaction process and helping the chemical reaction system achieve higher safety and stability.
[0024] Furthermore, the first inlet is equipped with a first feed pump, the second inlet is equipped with a second feed pump, and the third inlet is equipped with a third feed pump.
[0025] Compared with existing technologies, the beneficial effects of this invention are as follows: It organically combines a micromixer with a spiral reactor, improving mixing efficiency through the micromixer and increasing the contact area and heat transfer efficiency of the reactant liquids through the spiral reactor, thus accelerating the reaction rate, avoiding uncontrollable high temperatures, reducing energy consumption and costs, and improving reaction safety. It effectively overcomes the shortcomings of traditional batch reactors, such as slow speed, uneven mixing, inconsistent products, and unsafe production, making it practical. Furthermore, this invention effectively solves the problem of easy clogging in traditional micromixers by using an ultrasonic generator located on the outer wall of the micromixer, thereby achieving a highly efficient and stable chemical synthesis reaction in conjunction with the spiral reactor. Attached Figure Description
[0026] Figure 1 This invention relates to a chemical reaction system equipped with a spiral tube reactor.
[0027] Reference numerals: 1. Micromixer; 11. Ultrasonic generator; 2. Spiral reactor; 21. Third temperature control device; 3. Cooling device; 31. Discharge port; 4. First feed pipe; 41. First feed pump; 42. First temperature control device; 5. Second feed pipe; 51. Second temperature control device; 52. Third feed pipe; 6. Third feed pump; 61. Detection component; 7. Connecting pipe; 8. Ball valve; 9. Detailed Implementation
[0028] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.
[0029] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this invention. To better illustrate the following embodiments, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.
[0030] Example 1
[0031] like Figure 1As shown, this embodiment provides a chemical reaction system equipped with a helical reactor, including a micro mixer 1, a helical reactor 2, and a cooling device 3 connected in sequence. The input end of the micro mixer 1 is connected to a first feed pipe 4, a second feed pipe 5, and a third feed pipe 6 for entering the interior of the micro mixer 1. In specific implementation, to facilitate the connection and combination of various machine modules, a connecting pipe 8 is provided between the micro mixer 1, the helical reactor 2, and the cooling device 3.
[0032] To illustrate the working process, let's take the reaction of hydrazine hydrate and concentrated sulfuric acid to produce hydrazine sulfate as an example. The first feed pipe 4, the second feed pipe 5, and the third feed pipe 6 are used to input hydrazine hydrate, concentrated sulfuric acid, and a fluid conducting medium, respectively. Under the conduction of the circulating medium, hydrazine hydrate and concentrated sulfuric acid are first fed into the micro mixer 1 for thorough mixing. The entire mixing process can be completed within a few seconds, involving almost only physical mixing without any chemical reaction. Afterward, the mixture continues to be fed into the spiral tube reactor 2 for stabilization and reaction. Through the dual mixing action of the micro mixer 1 and the spiral tube reactor 2, and with the help of the efficient heat exchange of the spiral tube reactor 2, hydrazine hydrate and concentrated sulfuric acid undergo a stable, uniform, and efficient reaction. The mixture then flows continuously into the cooling device 3 for cooling treatment to obtain an intermediate reaction liquid. The entire process can be completed in 1-10 minutes, which greatly improves the reaction efficiency compared to conventional compound reactors. Finally, after separation, washing, drying, and other post-processing steps, hydrazine sulfate can be obtained.
[0033] Furthermore, the micro-mixer 1, the spiral reactor 2, and the cooling pipe 3 are preferably connected horizontally, so that the mixture is transported horizontally throughout the entire reaction process. The conduction of the fluid medium facilitates the material to achieve a plug flow mixing reaction, which greatly improves the mixing efficiency and has higher uniformity and stability, thereby improving the quality and yield of hydrazine sulfate preparation.
[0034] like Figure 1 As shown, in specific implementation, in order to facilitate the pumping of materials, the inlet of the first feed pipe 4 is equipped with a first feed pump 41, the inlet of the second feed pipe 5 is equipped with a second feed pump 51, and the inlet of the third feed pipe 6 is equipped with a third feed pump 61.
[0035] To improve conductivity, a third feed line 6 is located between the first feed line 4 and the second feed line 5. Specifically, the micro-mixer has a first feed port, a second feed port, and a third feed port, which are respectively connected to the first feed line 4, the second feed line 5, and the third feed line 6. The third feed port is located between the first feed port and the second feed port. During operation, since the materials input through the first feed line 4, the second feed line 5, and the third feed line 6 must be gathered together in the micro-mixer 1 to achieve uniform mixing, the connection path between the third feed line 6 and the first feed line 4 and the second feed line 5 can be shortened, simplifying the overall structure of the chemical reaction system. Furthermore, only one fluid conduction medium is needed to simultaneously conduct the two reaction raw materials, concentrated sulfuric acid and hydrazine hydrate.
[0036] To achieve better mixing results, the micropores inside the micromixer 1 have a diameter of 5-200 μm. Based on this pore size parameter, the mixing of hydrazine hydrate and concentrated sulfuric acid can be accelerated, while avoiding clogging caused by excessively small pores.
[0037] like Figure 1 As shown, the cooling device 3 specifically adopts a cooling pipe. In actual implementation, in order to meet the cooling requirements of the reaction liquid generated by the reaction of hydrazine hydrate and concentrated sulfuric acid, the length of the cooling pipe is set to 1-4m, and / or the inner diameter of the cooling pipe is set to 6-12mm. Tests have shown that based on the size of the cooling pipe, a hydrazine sulfate product with high purity and good consistency can be obtained.
[0038] like Figure 1 As shown, the outer wall of the micro mixer 1 is also provided with an ultrasonic generator 11 for emitting ultrasonic waves into the micro mixer 1. When working, hydrazine hydrate and concentrated sulfuric acid will produce a precipitation reaction when mixed. The ultrasonic generator 11 breaks up the precipitation in the micro mixer 1, preventing the precipitation from accumulating and blocking the micropore channels inside the micro mixer 1.
[0039] like Figure 1 As shown, the outlet of the spiral reactor is connected to a temperature and pressure detection component 7. During operation, operators can use the detection component 7 to monitor the temperature and pressure parameters of the reaction liquid flowing out of the spiral reactor, thereby flexibly adjusting the cooling medium flowing through the spiral reactor to ensure the safety and stability of the chemical preparation process.
[0040] To regulate the flow rate of the reaction liquid generated in the spiral reactor 2 to the cooling pipe 3, a valve component is also installed between the spiral reactor 2 and the cooling pipe 3. This also helps to regulate the residence time of concentrated sulfuric acid and hydrazine hydrate in the spiral reactor 2. In specific implementation, to improve accuracy, a ball valve 9 is used as the valve component.
[0041] Furthermore, to more accurately control the temperature of the reaction process, the first feed pipe 4 is equipped with a first temperature regulating device 42; and / or, the second feed pipe 5 is equipped with a second temperature regulating device 52; and / or, the spiral reactor 2 is equipped with a third temperature regulating device 21. In specific implementations, the first temperature regulating device 42, the second temperature regulating device 52, and the third temperature regulating device 21 can all be implemented by placing a heat-conducting medium on the surrounding sides of the corresponding components, and adjusting the temperature of the corresponding heat-conducting medium to regulate the internal ambient temperature of the corresponding components. For example, the spiral reactor 2 can adopt a nested structure, with an inner spiral coil and an outer jacketed shell. The smaller-diameter spiral coil carries reactants, such as hydrazine hydrate and concentrated sulfuric acid, while the shell forms a closed cavity encasing the spiral coil. This closed cavity is used to carry cooling media such as water or heat-conducting oil, thereby enabling efficient heat exchange of the reactants and ensuring a stable and efficient reaction process.
[0042] For ease of explanation, the reaction of hydrazine hydrate with concentrated sulfuric acid to produce hydrazine sulfate is used as an example, refer to... Figure 1 The specific working method of this utility model is as follows: First, the temperatures of the first temperature regulating device 42, the second temperature regulating device 52, the third temperature regulating device 21, and the cooling device are adjusted according to preset temperature conditions. Then, the third feed pump 61 is turned on, allowing the fluid conduction medium to enter the micro mixer 1 through the third feed pipe 6. Then, the first feed pump 41 and the second feed pump 51 are turned on simultaneously, allowing hydrazine hydrate and concentrated sulfuric acid to enter the micro mixer 1 through the first feed pipe 4 and the second feed pipe 5, respectively, under the conduction of the fluid conduction medium. After the hydrazine hydrate and concentrated sulfuric acid are rapidly and uniformly mixed through the micropores of the micro mixer 1, they are introduced into the spiral tube reactor 2 for stabilization and reaction. During this process, the fluid conduction medium can dilute the precipitate mixture generated by the reaction of hydrazine hydrate and concentrated sulfuric acid, and improve the flow efficiency of the precipitate mixture, avoiding blockage. Next, hydrazine hydrate and concentrated sulfuric acid react in a spiral reactor 2, and then are further transported to a cooling device 3 for cooling to obtain an intermediate product liquid. The intermediate product liquid is output through the outlet 31 of the cooling device 3, and after further separation, washing, and drying, hydrazine sulfate can be obtained. The material transfer method in this system is as follows:
[0043] The first feed pump 41, the second feed pump 51, and the third feed pump 61, along with the first feed pipe 4, the second feed pipe 5, and the third feed pipe 6, form a pressure coupling system. Since the reactant liquid has a very short retention time in the micro mixer 1, it can maintain its initial pressure when it is horizontally transported from the micro mixer 1 to the spiral reactor 2 until it is horizontally transported to the cooling device 3. The internal pressure of the cooling device 3 is atmospheric pressure. Based on the pressure difference between the cooling device 3 and the micro mixer 1 and the spiral reactor 2, the transport of the reactant liquid within the system can be ensured until it is discharged from the outlet 31.
[0044] Therefore, this utility model organically combines the micro mixer 1 with the spiral reactor 2, which improves the mixing efficiency through the micro mixer 1 and the heat exchange efficiency between the reactant liquid and the cooling medium through the spiral reactor 2, ensuring the stable progress of the reaction, accelerating the reaction rate, avoiding the occurrence of uncontrollable high temperatures due to the reaction, reducing the energy consumption and cost of the reaction, improving the safety of the reaction, and effectively overcoming the shortcomings of traditional batch reaction such as slow speed, uneven mixing, non-uniform products, and unsafe production, thus demonstrating its practicality.
[0045] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the technical solution of this utility model, and are not intended to limit the specific implementation of this utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the claims of this utility model should be included within the protection scope of the claims of this utility model.
Claims
1. A chemical reaction system equipped with a helical tube reactor, characterized in that, It includes a micro mixer, a spiral reactor, and a cooling device connected in sequence; the input end of the micro mixer is connected to a first feed pipe, a second feed pipe, and a third feed pipe for entering the interior of the micro mixer.
2. The chemical reaction system equipped with a spiral tube reactor according to claim 1, characterized in that, The micro mixer is provided with a first inlet, a second inlet, and a third inlet for connecting to the first feed line, the second feed line, and the third feed line, respectively. The third inlet is located between the first inlet and the second inlet.
3. The chemical reaction system equipped with a spiral tube reactor according to claim 1, characterized in that, The micropores inside the micromixer have a diameter of 5-200 μm.
4. The chemical reaction system equipped with a spiral tube reactor according to claim 1, characterized in that, The cooling device is a cooling pipe.
5. The chemical reaction system with a spiral tube reactor according to claim 4, characterized in that, The length of the cooling pipe is 1-4m, and / or the inner diameter of the cooling pipe is 6-12mm.
6. The chemical reaction system equipped with a spiral tube reactor according to any one of claims 1-5, characterized in that, The outer wall of the micro mixer is also provided with an ultrasonic generator for emitting ultrasonic waves into the interior of the micro mixer.
7. The chemical reaction system equipped with a spiral tube reactor according to any one of claims 1-5, characterized in that, The output port of the spiral reactor is connected to a temperature and pressure detection component.
8. The chemical reaction system equipped with a spiral tube reactor according to any one of claims 4-5, characterized in that, A valve component is also provided between the spiral reactor and the cooling pipe.
9. The chemical reaction system with a spiral tube reactor according to claim 8, characterized in that, The valve component is a ball valve.
10. The chemical reaction system equipped with a spiral tube reactor according to any one of claims 1-5 and 9, characterized in that, The first feed pipe is equipped with a first temperature regulating device; and / or, the second feed pipe is equipped with a second temperature regulating device; and / or, the spiral tube reactor is equipped with a third temperature regulating device.
11. The chemical reaction system equipped with a spiral tube reactor according to claim 2, characterized in that, The first inlet is equipped with a first feed pump, the second inlet is equipped with a second feed pump, and the third inlet is equipped with a third feed pump.