A multifunctional continuous reactor for diazotization reaction

Abstract

The application discloses a multifunctional continuous reactor for diazotization reaction, and belongs to the technical field of diazotization reaction.The multifunctional continuous reactor for diazotization reaction comprises a reaction unit and a storage unit, the outlet of the storage unit is connected with a precooling module, and the outlet of the precooling module is connected with a passivation assembly; the reaction unit comprises a sealed shell and a dynamic reaction tube, the inside of the sealed shell is provided with a material reaction zone and a heat exchange medium zone, the dynamic reaction tube penetrates the material reaction zone rotatably, and the two ends of the dynamic reaction tube are respectively provided with an inlet end and an outlet end; the dynamic reaction tube is connected with a transmission assembly, the transmission assembly is connected with a driving mechanism, and the material reaction zone is provided with a regulation and control system.The dynamic reaction tube directly disturbs the medium, breaks the heat stratification of the heat exchange medium, and eliminates the temperature difference fluctuation.

Description

Technical Field

[0001] This utility model belongs to the field of diazotization reaction technology, specifically relating to a multifunctional continuous reactor for diazotization reaction. Background Technology

[0002] Diazotization is a reaction between aromatic primary amines and nitrous acid in a strongly acidic medium to form diazonium salts. It is generally carried out at low temperatures, with a molar ratio of primary amine to acid of 1:2.5. The aromatic primary amine is often referred to as the diazo component, and nitrous acid is the diazotizing agent. Because nitrous acid is unstable, sodium nitrite and hydrochloric acid or sulfuric acid are usually used to ensure that the nitrous acid generated during the reaction reacts immediately with the aromatic primary amine, preventing the decomposition of nitrous acid. The diazotization reaction results in the formation of diazonium salts. In existing technologies, the material reaction zone of the reaction chamber is a static working chamber, relying on natural convection. This static state leads to a temperature difference, with the upper part heated and the lower part cooled.

[0003] Patent document authorization announcement number CN220610335U discloses a multifunctional continuous reactor for diazotization reaction, including a material tank, a heat exchanger, a separator, and a reactor. The output end of the material tank is connected to the input end of the separator. The heat exchanger is installed between the material tank and the separator, and the output end of the separator is connected to the input end of the reactor. The reactor includes a shell, a reaction assembly installed inside the shell, and two first partitions. The reaction assembly includes a reaction channel and a drive component. The input end of the reaction channel is rotatably connected to the output end of the first inlet, and the output end of the reaction channel is rotatably connected to the input end of the first outlet. The output end of the drive component is drively connected to the reaction channel, and the drive component provides power for the rotation of the reaction channel. By designing the reaction channel as a rotating structure, it can rotate and stir the heat exchange medium in the working chamber, making its temperature uniform and ensuring reaction conditions. The aforementioned patent document still uses a static working chamber in the material reaction zone, which has a certain temperature fluctuation. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a multifunctional continuous reactor for diazotization reaction, thus solving the problems mentioned in the background art.

[0005] The purpose of this invention is achieved as follows: A multifunctional continuous reactor for diazotization reaction includes a reaction unit and a storage unit. The outlet of the storage unit is connected to a precooling module, and the outlet of the precooling module is connected to a passivation component. The reaction unit includes a sealed shell and a dynamic reaction tube. The sealed shell contains a material reaction zone and a heat exchange medium zone. The dynamic reaction tube rotatably passes through the material reaction zone, with an inlet and an outlet at each end. The dynamic reaction tube is connected to a transmission component, which is connected to a drive mechanism. The material reaction zone is equipped with a control system. In use, after the material is temporarily stored in the storage unit, its temperature is regulated by the precooling module, and then impurities are removed by the passivation component. After entering the reaction unit, the material flows and reacts in the dynamic reaction tube. The heat exchange medium zone absorbs the heat of reaction through the coolant. The control system monitors the temperature in real time and adjusts the rotation speed of the dynamic reaction tube to ensure a constant temperature environment. By setting up the dynamic reaction tube to directly disturb the medium, the thermal stratification of the heat exchange medium is broken, and temperature fluctuations are eliminated.

[0006] Furthermore, the transmission assembly includes a drive gear, a driven gear ring, and a meshing chain. The drive gear is fixed to the output shaft of the drive mechanism, and the driven gear ring is sleeved on the outer wall of the dynamic reaction tube. The drive gear and the driven gear ring are connected by a meshing chain, and the drive mechanism is a motor. In use, the motor drives the drive gear to rotate, and the drive gear drives the driven gear ring to rotate through the meshing chain, thereby driving the dynamic reaction tube to rotate. This direct drive of the dynamic reaction tube to rotate avoids the risk of slippage.

[0007] Furthermore, the dynamic reaction tube has a continuous S-shaped curved structure, and its inner wall is provided with staggered turbulence fins. The continuous S-shaped curve extends the material path, and the turbulence fins cut the fluid to form micro-turbulence to enhance mixing. The material in the S-shaped tube is subjected to centrifugal force to impact the turbulence fins to form vortices, thereby shortening the reaction time.

[0008] Furthermore, the heat exchange medium zone is filled with phase change coolant and connected to an external circulating pump set for forced flow of the medium. The purification component is a ceramic membrane filter, and its outlet is connected to the feed end via a precision metering pump. The control system includes an infrared thermometer and a main control chip. The infrared thermometer is embedded in the side wall of the sealed housing, and the data is transmitted in real time to the main control chip to control the speed of the drive mechanism. A burst membrane safety valve is provided at the top of the sealed housing, and a quick-opening slag removal port is provided at the bottom.

[0009] The beneficial effects of this invention are as follows: By setting up a dynamic reaction tube to directly disturb the medium, thermal stratification of the heat exchange medium is broken, eliminating temperature fluctuations. During use, the material is temporarily stored in the storage unit, then its temperature is regulated by the pre-cooling module, and impurities are removed by the passivation component. After entering the reaction unit, the material flows and reacts within the dynamic reaction tube. The heat exchange medium absorbs the heat of reaction through the coolant. The control system monitors the temperature in real time and adjusts the speed of the dynamic reaction tube to ensure a constant temperature environment. The motor drives the drive gear to rotate, which in turn drives the driven gear ring to rotate through a meshing chain, thereby driving the dynamic reaction tube to rotate directly, avoiding the risk of slippage. The material path is extended by continuous S-shaped bends, and the turbulent fins cut the fluid to form micro-turbulence, enhancing mixing. The material, under centrifugal force, impacts the turbulent fins within the S-shaped pipe, forming vortices and shortening the reaction time. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model;

[0011] Figure 2 This is the utility model Figure 1 Enlarged view of A in the middle;

[0012] Figure 3 This is the utility model Figure 1 Enlarged view of B in the middle;

[0013] Figure 4 This is a schematic diagram of the dynamic reaction tube structure of this utility model.

[0014] In the diagram: 1. Reaction unit, 2. Storage unit, 3. Precooling module, 4. Passivation component, 5. Sealing shell, 6. Material reaction zone, 7. Heat exchange medium zone, 8. Dynamic reaction tube, 9. Control system, 10. Drive gear, 11. Driven gear ring, 12. Meshing chain, 13. Motor, 14. Turbulence fins, 15. Bursting membrane safety valve, 16. Quick-opening slag removal port. Detailed Implementation

[0015] The present invention will now be described in further detail with reference to the accompanying drawings. It should be noted that all directional terms such as up, down, front, back, left, and right appearing in the present invention are not intended to limit the present invention, but are only used to more clearly explain and interpret the present invention. Example 1

[0016] like Figure 1-4As shown, this embodiment discloses a multifunctional continuous reactor for diazotization reaction, which includes a reaction unit 1 and a storage unit 2. The outlet of the storage unit 2 is connected to a precooling module 3, and the outlet of the precooling module 3 is connected to a passivation component 4. The reaction unit 1 includes a sealed shell 5 and a dynamic reaction tube 8. The sealed shell 5 has a material reaction zone 6 and a heat exchange medium zone 7. The dynamic reaction tube 8 rotatably passes through the material reaction zone 6, and has an inlet end and an outlet end at both ends. The dynamic reaction tube 8 is connected to a transmission component, which is connected to a drive mechanism. The material reaction zone 6 is equipped with a control system 9. In use, after the material is temporarily stored in the storage unit 2, the temperature is regulated by the precooling module 3, and then impurities are removed by the passivation component 4. After entering the reaction unit 1, the material flows and reacts in the dynamic reaction tube 8. The heat exchange medium zone 7 absorbs the heat of reaction through the coolant. The control system 9 monitors the temperature in real time and adjusts the rotation speed of the dynamic reaction tube 8 to ensure a constant temperature environment. By setting up a dynamic reaction tube 8, the medium is directly disturbed, breaking the thermal stratification of the heat exchange medium and eliminating temperature fluctuations.

[0017] The transmission assembly includes a drive gear 10, a driven gear ring 11, and a meshing chain 12. The drive gear 10 is fixed to the output shaft of the drive mechanism, and the driven gear ring 11 is sleeved on the outer wall of the dynamic reaction tube 8. The drive gear 10 and the driven gear ring 11 are connected by the meshing chain 12. The drive mechanism is a motor 13. In use, the motor 13 drives the drive gear 10 to rotate, and the drive gear 10 drives the driven gear ring 11 to rotate through the meshing chain 12, thereby driving the dynamic reaction tube 8 to rotate. This direct drive of the dynamic reaction tube 8 avoids the risk of slippage. Example 2

[0018] like Figure 1-4 As shown, this embodiment discloses a multifunctional continuous reactor for diazotization reaction, which includes a reaction unit 1 and a storage unit 2. The outlet of the storage unit 2 is connected to a precooling module 3, and the outlet of the precooling module 3 is connected to a passivation component 4. The reaction unit 1 includes a sealed shell 5 and a dynamic reaction tube 8. The sealed shell 5 has a material reaction zone 6 and a heat exchange medium zone 7. The dynamic reaction tube 8 rotatably passes through the material reaction zone 6, and has an inlet end and an outlet end at both ends. The dynamic reaction tube 8 is connected to a transmission component, which is connected to a drive mechanism. The material reaction zone 6 is equipped with a control system 9. In use, after the material is temporarily stored in the storage unit 2, the temperature is regulated by the precooling module 3, and then impurities are removed by the passivation component 4. After entering the reaction unit 1, the material flows and reacts in the dynamic reaction tube 8. The heat exchange medium zone 7 absorbs the heat of reaction through the coolant. The control system 9 monitors the temperature in real time and adjusts the rotation speed of the dynamic reaction tube 8 to ensure a constant temperature environment. By setting up a dynamic reaction tube 8, the medium is directly disturbed, breaking the thermal stratification of the heat exchange medium and eliminating temperature fluctuations.

[0019] The transmission assembly includes a drive gear 10, a driven gear ring 11, and a meshing chain 12. The drive gear 10 is fixed to the output shaft of the drive mechanism, and the driven gear ring 11 is sleeved on the outer wall of the dynamic reaction tube 8. The drive gear 10 and the driven gear ring 11 are connected by the meshing chain 12. The drive mechanism is a motor 13. In use, the motor 13 drives the drive gear 10 to rotate, and the drive gear 10 drives the driven gear ring 11 to rotate through the meshing chain 12, thereby driving the dynamic reaction tube 8 to rotate. This direct drive of the dynamic reaction tube 8 avoids the risk of slippage.

[0020] For better results, the dynamic reaction tube 8 has a continuous S-shaped curved structure, and its inner wall is provided with staggered turbulence fins 14. The continuous S-shaped curve extends the material path, and the turbulence fins 14 cut the fluid to form micro-turbulence to enhance mixing. The material in the S-shaped tube is subjected to centrifugal force to impact the turbulence fins 14 to form vortices, which shortens the reaction time.

[0021] For better results, the heat exchange medium zone 7 is filled with phase change coolant and connected to an external circulating pump set for forced flow of the medium. The purification component is a ceramic membrane filter, and its outlet is connected to the feed end via a precision metering pump. The control system 9 includes an infrared thermometer and a main control chip. The infrared thermometer is embedded in the side wall of the sealed housing 5, and the data is transmitted in real time to the main control chip to control the speed of the drive mechanism. The sealed housing 5 is equipped with a burst membrane safety valve 15 at the top and a quick-opening slag removal port 16 at the bottom.

[0022] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A multifunctional continuous reactor for diazotization reaction, comprising a reaction unit and a storage unit, wherein the outlet of the storage unit is connected to a precooling module, and the outlet of the precooling module is connected to a passivation component; characterized in that: The reaction unit includes a sealed shell and a dynamic reaction tube. The sealed shell has a material reaction zone and a heat exchange medium zone inside. The dynamic reaction tube rotatably passes through the material reaction zone and has an inlet end and an outlet end at both ends. The dynamic reaction tube is connected to a transmission assembly, which is connected to a drive mechanism. The material reaction zone is equipped with a control system.

2. The multifunctional continuous reactor for diazotization reaction according to claim 1, characterized in that, The transmission assembly includes a drive gear, a driven gear ring, and a meshing chain. The drive gear is fixed to the output shaft of the drive mechanism, and the driven gear ring is sleeved on the outer wall of the dynamic reaction tube.

3. The multifunctional continuous reactor for diazotization reaction according to claim 1 or 2, characterized in that, The dynamic reaction tube has a continuous "S"-shaped curved structure, and its inner wall is provided with staggered turbulence fins.

4. The multifunctional continuous reactor for diazotization reaction according to claim 1, characterized in that, The heat exchange medium zone is filled with phase change coolant and connected to an external circulating pump set for forced flow of the medium.

5. The multifunctional continuous reactor for diazotization reaction according to claim 1, characterized in that, The purification component is a ceramic membrane filter, and its outlet is connected to the feed end via a precision metering pump.

6. The multifunctional continuous reactor for diazotization reaction according to claim 1, characterized in that, The control system includes an infrared thermometer and a main control chip. The infrared thermometer is embedded in the side wall of the sealed housing, and the data is transmitted to the main control chip in real time to control the speed of the drive mechanism.

7. The multifunctional continuous reactor for diazotization reaction according to claim 1, characterized in that, The top of the sealed housing is equipped with a rupture membrane safety valve, and the bottom is equipped with a quick-opening slag removal port.

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