CN114749120A - Continuous flow reactor and reaction system - Google Patents
Continuous flow reactor and reaction system Download PDFInfo
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- CN114749120A CN114749120A CN202210462400.9A CN202210462400A CN114749120A CN 114749120 A CN114749120 A CN 114749120A CN 202210462400 A CN202210462400 A CN 202210462400A CN 114749120 A CN114749120 A CN 114749120A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0053—Details of the reactor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0006—Controlling or regulating processes
- B01J19/0013—Controlling the temperature of the process
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/18—Stationary reactors having moving elements inside
- B01J19/1812—Tubular reactors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00002—Chemical plants
- B01J2219/00027—Process aspects
- B01J2219/00033—Continuous processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00049—Controlling or regulating processes
- B01J2219/00051—Controlling the temperature
- B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
- B01J2219/00087—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements outside the reactor
- B01J2219/00099—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements outside the reactor the reactor being immersed in the heat exchange medium
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Abstract
The invention discloses a continuous flow reactor and a reaction system, wherein the continuous flow reactor comprises a driving device, a reaction tube, a stirring shaft and a dispersion structure, a reaction cavity for accommodating reactants is formed in the reaction tube, the reaction tube has an axial direction and a radial direction, the stirring shaft is arranged in the reaction cavity and extends along the axial direction of the reaction tube, one end of the stirring shaft penetrates through the reaction tube and extends out of the outer side of the reaction cavity and is connected with the driving device, and the dispersion structure is arranged in the reaction cavity and is connected with the stirring shaft. The stirring shaft is driven to rotate by the driving device, the dispersing structure is driven to rotate, and the gas-liquid-solid multiphase mixing is greatly enhanced by utilizing the stirring and shearing functions of the dispersing structure. The invention aims to improve the mixing efficiency of multiphase reactants in a continuous flow reactor and improve the mass and heat transfer effects of the multiphase reactants.
Description
Technical Field
The invention relates to the technical field of continuous flow reactors, in particular to a continuous flow reactor and a reaction system using the same.
Background
The continuous flow reaction technology can improve the efficiency of equipment, simplify the process flow, reduce material consumption and energy consumption and realize safe and clean production. Generally, in a continuous flow reaction, gas-liquid-solid multiphase reactants react in a reaction cavity, wherein solid particles are easy to settle at a low flow rate, the mixing effect is poor, and pipelines are more likely to be blocked after long-time operation; although the particle mixing effect is good at high flow speed, the residence time of the particles in the pipeline is short, and the requirement of the reaction time is difficult to meet, so that the continuous process of the multiphase reaction is always a difficult point and a hot point for continuous production. In the related art, a stirring shaft is arranged in a reaction cavity to forcibly mix gas, liquid and solid phases so as to enhance the mass and heat transfer efficiency of the multiphase reaction. However, the existing stirring shaft has a single structure, and the stirring and mixing effects are not ideal enough, so that the requirement of multiphase reaction cannot be met.
Disclosure of Invention
The invention mainly aims to provide a continuous flow reactor, aiming at improving the mixing efficiency of multiphase reactants in the continuous flow reactor and improving the mass and heat transfer effects of the multiphase reactants.
To achieve the above object, the present invention proposes a continuous flow reactor comprising:
a drive device;
the reaction tube is internally provided with a reaction cavity for accommodating reactants and has an axial direction and a radial direction;
the stirring shaft is arranged in the reaction cavity and extends along the axial direction of the reaction tube, and one end of the stirring shaft penetrates through the reaction tube and extends out of the reaction cavity and is connected with the driving device; and
the dispersing structure is arranged in the reaction cavity and connected with the stirring shaft, and the driving device drives the stirring shaft to rotate and simultaneously drives the dispersing structure to rotate so as to strengthen the mixing of reactants.
In an embodiment of the present invention, the dispersion structure includes:
the axial dispersion plate is connected with the stirring shaft and is arranged along the axial direction of the reaction tube; and/or, a plurality of radial dispersion boards, each radial dispersion board with the (mixing) shaft is connected, and a plurality of radial dispersion boards set up along the radial direction of reaction tube, and a plurality of radial dispersion boards along the axial direction interval distribution of reaction tube to with the reaction chamber is divided into a plurality of reaction zones that are linked together.
In an embodiment of the present invention, the axial dispersion plate and the stirring shaft are an integral structure; and/or the radial dispersion plate and the stirring shaft are of an integral structure.
In an embodiment of the present invention, when the dispersing structure includes the axial dispersion plate, the axial dispersion plate includes: a stirring zone, wherein the stirring zone is a non-porous plate; and/or the shearing area is provided with a plurality of shearing holes which are arranged at intervals.
In an embodiment of the present invention, in each of the reaction zones, the stirring zone and the shearing zone are respectively located at two sides of the stirring shaft; in two adjacent reaction zones, the stirring zone is positioned at the same side of the stirring shaft; or in two adjacent reaction zones, the stirring zone and the shearing zone are alternately positioned on the same side of the stirring shaft.
In an embodiment of the present invention, the radial dispersion plate is provided with a via hole; or a channel is formed between the radial dispersion plate and the inner wall surface of the reaction cavity.
In an embodiment of the present invention, the through holes on two adjacent radial dispersion plates are respectively located on two sides of the axial dispersion plate.
In an embodiment of the present invention, a side wall surface of the reaction tube is provided with a feed inlet and a discharge outlet which are communicated with the reaction chamber, and the feed inlet and the discharge outlet are respectively arranged at two ends of the reaction tube in the axial direction.
In an embodiment of the present invention, the continuous flow reactor further includes the heat exchange tube, the heat exchange tube is sleeved on an outer wall surface of the reaction tube, and encloses with the outer wall surface of the reaction tube to form a heat exchange cavity, the heat exchange tube is further provided with a heat exchange inlet and a heat exchange outlet which are communicated with the heat exchange cavity, and the heat exchange inlet and the heat exchange outlet are respectively located at two ends of the heat exchange tube in the axial direction.
The invention also provides a reaction system, which comprises the continuous flow reactor, wherein a plurality of continuous flow reactors are connected in series or in parallel.
The continuous flow reactor provided by the technical scheme of the invention comprises a driving device, a reaction tube, a stirring shaft and a dispersion structure, wherein a reaction cavity in the reaction tube is used for accommodating reactants, the stirring shaft is arranged in the reaction cavity and extends out of the reaction cavity to be connected with the driving device, the dispersion structure is also arranged in the reaction cavity, and the dispersion structure is connected with the stirring shaft. When the device is used, the driving device drives the stirring shaft to rotate in the reaction cavity, the stirring shaft rotates and simultaneously drives the dispersing structure connected with the stirring shaft to rotate, and the dispersing structure can disperse liquid-phase substances and solid-phase substances, so that the contact area between the multiphase substances is increased, the mixing between the multiphase substances is enhanced, the mass and heat transfer effect is improved, and the reaction efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic diagram of the structure of a continuous flow reactor of the present invention;
FIG. 2 is a schematic cross-sectional configuration of a continuous flow reactor of the present invention;
FIG. 3 is a schematic diagram of the structure of one embodiment of a continuous flow reactor of the present invention;
FIG. 4 is a schematic diagram of the structure of another embodiment of a continuous flow reactor of the present invention;
FIG. 5 is a schematic diagram of the structure of yet another embodiment of a continuous flow reactor of the present invention.
The reference numbers illustrate:
| reference numerals | Name(s) | Reference numerals | Name (R) | |
| 1000 | |
| Shear hole | |
| 100 | |
312 | |
|
| 110 | |
320 | |
|
| 120 | |
321 | Via |
|
| 130 | |
400 | |
|
| 140 | |
500 | |
|
| 200 | |
600 | |
|
| 300 | |
610 | |
|
| 310 | |
620 | |
|
| 311 | |
630 | Heat exchange cavity |
The implementation, functional features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B," including either the A or B arrangement, or both A and B satisfied arrangement. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The present invention provides a continuous flow reactor 1000.
Referring to fig. 1 and 2, fig. 1 is a schematic diagram of the structure of a continuous flow reactor 1000 of the present invention, and fig. 2 is a schematic diagram of the cross-sectional structure of the continuous flow reactor 1000 of the present invention;
in an embodiment of the present invention, the continuous flow reactor 1000 includes a driving device 500, a reaction tube 100, a stirring shaft 200, and a dispersing structure 300, wherein a reaction chamber 110 for accommodating reactants is formed in the reaction tube 100, the reaction tube 100 has an axial direction and a radial direction, the stirring shaft 200 is disposed in the reaction chamber 110 and extends along the axial direction of the reaction tube 100, and one end of the stirring shaft 200 penetrates through the reaction tube 100 and protrudes out of the reaction chamber 110, and is connected to the driving device 500; the dispersing structure 300 is disposed in the reaction chamber 110 and connected to the stirring shaft 200, and the driving device 500 drives the stirring shaft 200 to rotate and simultaneously drives the dispersing structure 300 to rotate, so as to enhance the mixing of reactants.
The continuous flow reactor 1000 provided by the technical scheme of the invention comprises a driving device 500, a reaction tube 100, a stirring shaft 200 and a dispersing structure 300, wherein a reaction cavity 110 in the reaction tube 100 is used for accommodating reactants, the stirring shaft 200 is arranged in the reaction cavity 110 and extends out of the reaction cavity 110 to be connected with the driving device 500 through a coupler 400, the dispersing structure 300 is further arranged in the reaction cavity 110, and the dispersing structure 300 is connected with the stirring shaft 200. Thus, the driving device 500 drives the stirring shaft 200 to rotate in the reaction chamber 110, and drives the dispersing structure 300 connected to the stirring shaft 200 to rotate. The rotating process of the dispersing structure 300 can disperse liquid-phase substances and solid-phase substances, so that the contact area between the multiphase substances is increased, the mixing between the multiphase substances is enhanced, the mass and heat transfer effects are improved, and the reaction efficiency is improved.
The reaction tube 100 comprises a tube body and sealing caps 140 connected to two ends of the tube body, wherein two ends of the stirring shaft 200 are rotatably connected to the sealing caps 140, one of the sealing caps 140 is a through hole, and the other sealing cap 140 is a blind hole. The sealing cap 140 and the tube body may be sealed by mechanical sealing, magnetic sealing, packing sealing or sealing, as long as the sealing of the reaction chamber 110 can be achieved. Similarly, the sealing cover 140 is also connected to the stirring shaft 200 in a sealing manner, so as to prevent the liquid in the reaction chamber 110 from flowing out through the assembly gap between the sealing cover 140 and the stirring shaft 200.
The driving device 500 may be a motor, such as a servo motor, a stepping motor, etc., and the shaft of the motor is described to be connected with the end of the stirring shaft 200 through the coupling 400; the positive and negative rotation of the motor can be changed rapidly, the stirring speed is 50-3000 revolutions, the positive and negative frequency can reach more than 10Hz, the driving device 500 can change the moving direction of the multiphase fluid by driving the stirring shaft 200 to rotate rapidly, the multiphase fluid is dispersed by combining the stirring and shearing functions of the stirring shaft 200 and the dispersing structure 300, the contact area of the multiphase fluid is greatly increased, more broken micro-bubbles are solubilized into slurry, and the mass and heat transfer efficiency and the reaction efficiency are greatly improved.
The stirring shaft 200 is a long shaft and is made of a material having high strength, and the stirring shaft 200 and the dispersing structure 300 are selected from materials that do not react with the reactant, such as high-strength plastic or metal alloy with stable properties, since they are in full contact with the reactant.
It can be understood that the larger the leaf width of the dispersion structure 300, the wider the dispersion structure 300 has wide adaptability, and the wide dispersion structure 300 can better perform partitioned stirring on reactants, so that the reaction application range is expanded to a fluid with a relatively high viscosity, and the mass transfer and heat transfer performance of a multiphase fluid with a relatively high viscosity is greatly enhanced.
In an embodiment, as shown in fig. 2, 3 and 4, the dispersing structure 300 includes an axial dispersing plate 310, and the axial dispersing plate 310 is connected to the stirring shaft 200 and is disposed along the axial direction of the reaction tube 100; and/or, a plurality of radial dispersion plates 320, each radial dispersion plate 320 being connected to the stirring shaft 200, the plurality of radial dispersion plates 320 being arranged along the radial direction of the reaction tube 100, the plurality of radial dispersion plates 320 being distributed at intervals along the axial direction of the reaction tube 100 and dividing the reaction chamber 110 into a plurality of reaction zones that are in communication with each other. The axial dispersion plate 310 and the stirring shaft 200 are of an integral structure; and/or, the radial dispersion plate 320 and the stirring shaft 200 are of an integral structure.
It is understood that the dispersing structure 300 may be provided with only the axial dispersion plate 310, or the dispersing structure 300 may be provided with only the radial dispersion plate 320, or the dispersing structure 300 may be provided with both the axial dispersion plate 310 and the radial dispersion plate 320.
The number of the axial dispersion plates 310 may be two, two axial dispersion plates 310 may be connected to opposite sides of the stirring shaft 200, and a plurality of axial dispersion plates 310 may be uniformly arranged around the stirring shaft 200, or arranged around the stirring shaft 200 at a certain included angle between two adjacent axial dispersion plates 310.
The radial dispersion plate 320 may be a circular plate, or may be a plate body having another shape. The radial dispersion plates 320 are distributed at intervals along the axial direction of the reaction tube 100, and the interval distance between two adjacent radial dispersion plates 320 is not easy to be too small or too long; too small a distance between the spacers, too few reactant in the spacers, insufficient stirring of the reactant, too long a distance between the spacers, too much reactant in the spacers, and increased pressure of the axial dispersion plate 310 during the stirring process due to the self-gravity of the reactant.
In the present invention, the stirring shaft 200 is combined with the axial dispersion plate 310 and the radial dispersion plate 320, so that the continuous flow reactor 1000 has efficient plug flow characteristics and excellent stirring and mixing functions, prolongs the residence time of the multiphase reaction, and is extremely suitable for the multiphase reaction continuous process.
Further, the axial dispersion plate 310 is parallel to the axial direction, and may have other angles to enhance the driving force of the slurry advancing, as shown in fig. 4. The number of the axial dispersion plates 310 may be 1; or 2 pieces are distributed at 180 degrees; 3, distributed at an angle of 120 degrees, or 4, distributed in a cross shape. It can be understood that, when the cross-sectional area of the reaction tube 100 is larger and the axis of the stirring shaft 200 passes through the cross-sectional area, more reactants need to be stirred at the same position in the axial direction of the stirring shaft 200, and the plurality of axial dispersion plates 310 are arranged around the circumference of the stirring shaft 200 at intervals, so that the stirring effect is better and the efficiency is higher.
In an embodiment, as shown in fig. 3, 4 and 5, when the dispersing structure 300 includes the axial dispersion plate 310, the axial dispersion plate 310 includes: a stirring zone 312, and/or a shearing zone 311, the stirring zone 312 being a non-porous plate; the cutting area 311 is provided with a plurality of cutting holes 311a arranged at intervals.
In the solution of an embodiment of the present invention, the axial dispersion plate 310 may extend from the shaft to both ends of the reaction tube 100, and the axial dispersion plate 310 is divided into the stirring zone 312 and the shearing zone 311, wherein the shearing zone 311 is provided with a plurality of shearing holes 311a, and the diameter and distribution of the shearing holes 311a may be changed, for example, a portion near the tube wall is a small hole, and a portion near the shaft is a large hole, so that the liquid centrifuged to the tube wall of the reaction chamber 110 can be better returned to the center to be mixed with the gas.
As shown in fig. 3, 4, and 5, the two axial dispersion plates 310 are both porous plates, and rapidly shear the reaction material to disperse the gas and liquid, thereby increasing the gas-liquid contact area and enhancing the reaction efficiency.
As shown in fig. 5, the axial dispersion plate 310 is provided with a stirring zone 312 and a shearing zone 311, and the stirring zone 312 and the shearing zone 311 are wound around the stirring shaft 200 like a spiral structure. The scheme is favorable for pulsed mixing of multiphase materials by combining forward and reverse rotation driving of the driving device 500, and the gas-liquid-solid multiphase reaction efficiency is enhanced. Meanwhile, the axial dispersion plate 310 has an inclination to enhance the driving force to the reaction materials, and the driving device 500 rotates along one direction or periodically changes in the same direction, so that the device is particularly suitable for stirring reaction of a fluid with high viscosity or high solid particle concentration in the reactant.
In one embodiment, in each of the reaction zones, as shown in fig. 3, the stirring zone 312 and the shearing zone 311 are respectively located at two sides of the stirring shaft 200; in two adjacent reaction zones, the stirring zone 312 is located on the same side of the stirring shaft 200.
As shown in fig. 4, in two adjacent reaction zones, the stirring zone 312 and the shearing zone 311 are alternately located on the same side of the stirring shaft 200.
Further, the stirring area 312 is not provided with a shearing hole 311a for driving the gas and slurry in the reaction chamber to rotate; the shearing zone 311 is provided with a plurality of shearing holes 311a for shearing the reaction materials, dispersing the slurry into a plurality of strands of thin streams, fully contacting with gas to generate chemical reaction, and being particularly suitable for gas-liquid-solid multiphase reaction.
In an embodiment, the radial dispersion plate 320 is provided with a through hole 321; or a passage is formed between the radial dispersion plate 320 and the inner wall surface of the reaction chamber 110. The through holes 321 on two adjacent radial dispersion plates 320 are respectively located on two sides of the axial dispersion plate 310.
Further, as shown in fig. 2 and 3, the radial dispersion plate 320 is provided in a circular shape, and the radial dispersion plate 320 has substantially the same shape as the cross section of the reaction tube 100. In this manner, the plurality of radial dispersion plates 320 may divide the reaction chamber 110 into a plurality of unconnected reaction zones. Further, by providing the through holes 321 on the radial dispersion plate 320, the through holes 321 can communicate two adjacent reaction zones, so that the reactants in the reaction chamber 110 can flow in the adjacent reaction zones. The shape of the via hole 321 may be a hole, a square hole, or a special-shaped hole.
Further, the number of the through holes 321 on the radial dispersion plates 320 may be one, and when only one through hole 321 is provided, the through holes 321 of two adjacent radial dispersion plates 320 are respectively provided at two sides of the axial dispersion plate 310. It can be understood that, when only one through hole 321 is disposed on the radial dispersion plate 320, the aperture of the through hole 321 is slightly larger, so that the solid reactant is not blocked when passing through the radial dispersion plate 320. Of course, the number of the through holes 321 on the radial dispersion plate 320 may also be a plurality of through holes arranged at intervals, and similarly, the aperture of the through holes 321 may also be set reasonably according to the solid particles in the reactant. Of course, the size of the aperture of the through hole 321 should not only consider the size of the solid particles in the reactant, but also the flow velocity of the liquid in the reaction chamber 110 to control the reaction time of the reactant.
Further, the radial dispersion plate 320 may be fixed above the stirring shaft 200 to rotate following the stirring shaft 200. It is also possible to arrange a fixed radial dispersion plate 320 on the inner wall of the reaction chamber 110 such that the radial dispersion plate 320 does not rotate with the continuous flow reactor 1000.
In an embodiment, a side wall surface of the reaction tube 100 is provided with a feed inlet 120 and a discharge outlet 130 communicating with the reaction chamber 110, and the feed inlet 120 and the discharge outlet 130 are respectively disposed at two ends of the reaction tube 100 in the axial direction.
The inlet 120 provides for the reactants to enter the reaction chamber 110, and the outlet 130 provides for the reactants to leave the reaction chamber 110. The inlet 120 and the outlet 130 are provided to facilitate the connection of the reaction chamber 110 to other material storage devices or product discharge devices. When one feed port 120 is provided, different materials enter the reaction chamber 110 through the feed port 120, for example, a solid material and a liquid material are mixed to form a suspension, and the suspension enters the reaction chamber 110 from the same feed port 120; when the feed inlet 120 is provided in plural, different materials can enter the reaction chamber 110 from different feed inlets 120.
The inlet 120 and the outlet 130 are disposed at two ends of the reaction chamber 110 in the length direction. Therefore, the interface is not easy to be confused in the feeding and discharging processes, and the material enters the reaction chamber 110 from the feeding hole 120 and then needs to leave the reaction chamber 110 from the discharging hole 130 through a longer distance, which is beneficial to mixing the reactants.
In an embodiment, the continuous flow reactor 1000 further includes the heat exchange tube 600, the heat exchange tube 600 is sleeved on the surface of the reaction tube 100 and encloses with the outer wall surface of the reaction tube 100 to form a heat exchange cavity 630, the heat exchange tube 600 is further provided with a heat exchange inlet 610 and a heat exchange outlet 620 communicated with the heat exchange cavity 630, and the heat exchange inlet 610 and the heat exchange outlet 620 are respectively located at two ends of the heat exchange tube 600 in the axial direction.
The heat exchange cavity 630 is used for accommodating a heat exchange medium, which may be a heat exchange fluid, such as water, oil, etc. Through the injection of the heat exchange medium from the heat exchange inlet 610 and the outflow of the heat exchange medium from the heat exchange outlet 620, the heat exchange medium can be supplemented or replaced, so that the heat exchange medium can uniformly exchange heat with the reactants in the reaction tube 100, and thus the continuous flow reactor 1000 is suitable for the gradual heat release or heat absorption of the reactants in the slow reaction.
The present invention further provides a reaction system, which includes the continuous flow reactor 1000, and the specific structure of the continuous flow reactor 1000 refers to the above embodiments, and since the reaction system adopts all the technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and no further description is given here.
Wherein, a plurality of continuous flow reactors 1000 are arranged, and a plurality of continuous flow reactors 1000 are arranged in series or in parallel, so as to improve the reaction yield or prolong the retention time. For example, the serial arrangement of the continuous flow reactors 1000 can realize multi-stage continuous production, multi-step reaction or multi-temperature zone reaction by using the heat exchange tubes 600 on the continuous flow reactors 1000. The parallel arrangement of the continuous flow reactors 1000 reduces the pressure in the reaction tube 100, has large flux, and realizes the amplification production of the process with the reaction within several minutes or even tens of minutes.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A continuous flow reactor comprising
A drive device;
the reaction tube is internally provided with a reaction cavity for accommodating reactants and has an axial direction and a radial direction;
the stirring shaft is arranged in the reaction cavity and extends along the axial direction of the reaction tube, and one end of the stirring shaft penetrates through the reaction tube and extends out of the reaction cavity and is connected with the driving device; and
the dispersing structure is arranged in the reaction cavity and connected with the stirring shaft, and the driving device drives the stirring shaft to rotate and simultaneously drives the dispersing structure to rotate so as to strengthen the mixing of reactants.
2. The continuous flow reactor of claim 1, wherein the dispersion structure comprises:
the axial dispersion plate is connected with the stirring shaft and is arranged along the axial direction of the reaction tube; and/or
The reaction chamber is divided into a plurality of reaction areas which are communicated with each other by a plurality of radial dispersion plates which are connected with the stirring shaft and arranged along the radial direction of the reaction tube.
3. The continuous flow reactor of claim 2, wherein the axial dispersion plate is of unitary construction with the stirring shaft; and/or
The radial dispersion plate and the stirring shaft are of an integral structure.
4. The continuous flow reactor of claim 2, wherein when the dispersion structure comprises the axial dispersion plate, the axial dispersion plate comprises:
a stirring zone, wherein the stirring zone is a non-porous plate; and/or
The shearing area is provided with a plurality of shearing holes arranged at intervals.
5. The continuous flow reactor of claim 4, wherein in each of the reaction zones, the agitation zone and the shear zone are located on either side of the agitation shaft;
in two adjacent reaction zones, the stirring zones are positioned on the same side of the stirring shaft; or
In two adjacent reaction zones, the stirring zone and the shearing zone are alternately positioned on the same side of the stirring shaft.
6. The continuous flow reactor of claim 2, wherein the radial dispersion plate is provided with through holes; or a channel is formed between the radial dispersion plate and the inner wall surface of the reaction cavity.
7. The continuous flow reactor of claim 6, wherein the through holes of two adjacent radial dispersion plates are respectively located on both sides of the axial dispersion plate.
8. The continuous flow reactor according to any one of claims 1 to 7, wherein the side wall surface of the reaction tube is provided with a feed inlet and a discharge outlet which are communicated with the reaction chamber, and the feed inlet and the discharge outlet are respectively arranged at two ends of the axial direction of the reaction tube.
9. The continuous flow reactor of claim 8, further comprising a heat exchange tube, wherein the heat exchange tube is sleeved on the outer wall surface of the reaction tube and encloses with the outer wall surface of the reaction tube to form a heat exchange cavity, the heat exchange tube is further provided with a heat exchange inlet and a heat exchange outlet which are communicated with the heat exchange cavity, and the heat exchange inlet and the heat exchange outlet are respectively located at two ends of the heat exchange tube in the axial direction.
10. A reaction system comprising a plurality of continuous flow reactors according to any one of claims 1 to 9, wherein the plurality of continuous flow reactors are arranged in series or in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210462400.9A CN114749120A (en) | 2022-04-28 | 2022-04-28 | Continuous flow reactor and reaction system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210462400.9A CN114749120A (en) | 2022-04-28 | 2022-04-28 | Continuous flow reactor and reaction system |
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| CN114749120A true CN114749120A (en) | 2022-07-15 |
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| CN202210462400.9A Pending CN114749120A (en) | 2022-04-28 | 2022-04-28 | Continuous flow reactor and reaction system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117548071A (en) * | 2024-01-11 | 2024-02-13 | 山东豪迈机械制造有限公司 | Reactor and reaction system |
| WO2024065073A1 (en) * | 2022-09-26 | 2024-04-04 | 深圳市华先医药科技有限公司 | Dynamic micro-channel tubular continuous flow reactor |
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2022
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024065073A1 (en) * | 2022-09-26 | 2024-04-04 | 深圳市华先医药科技有限公司 | Dynamic micro-channel tubular continuous flow reactor |
| CN117548071A (en) * | 2024-01-11 | 2024-02-13 | 山东豪迈机械制造有限公司 | Reactor and reaction system |
| CN117548071B (en) * | 2024-01-11 | 2024-04-02 | 山东豪迈机械制造有限公司 | Reactor and reaction system |
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