CN117244496A - Micro-reactor for strengthening internal fluid mixing - Google Patents
Micro-reactor for strengthening internal fluid mixing Download PDFInfo
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- CN117244496A CN117244496A CN202311407416.0A CN202311407416A CN117244496A CN 117244496 A CN117244496 A CN 117244496A CN 202311407416 A CN202311407416 A CN 202311407416A CN 117244496 A CN117244496 A CN 117244496A
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- 239000012530 fluid Substances 0.000 title claims abstract description 205
- 238000005728 strengthening Methods 0.000 title claims abstract description 11
- 238000006243 chemical reaction Methods 0.000 claims abstract description 48
- 239000000376 reactant Substances 0.000 claims abstract description 24
- 238000010438 heat treatment Methods 0.000 claims description 25
- 238000007789 sealing Methods 0.000 claims description 19
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 230000002708 enhancing effect Effects 0.000 claims description 4
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 24
- 238000000034 method Methods 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 11
- 239000000203 mixture Substances 0.000 abstract description 8
- 230000009286 beneficial effect Effects 0.000 description 6
- 238000005452 bending Methods 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- UHZZMRAGKVHANO-UHFFFAOYSA-M chlormequat chloride Chemical group [Cl-].C[N+](C)(C)CCCl UHZZMRAGKVHANO-UHFFFAOYSA-M 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
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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
- B01J19/0093—Microreactors, e.g. miniaturised or microfabricated 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
- B01J2219/00781—Aspects relating to microreactors
- B01J2219/00783—Laminate assemblies, i.e. the reactor comprising a stack of plates
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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
- B01J2219/00781—Aspects relating to microreactors
- B01J2219/00801—Means to assemble
- B01J2219/00804—Plurality of plates
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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
- B01J2219/00781—Aspects relating to microreactors
- B01J2219/00889—Mixing
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Abstract
The invention discloses a micro-reactor for strengthening internal fluid mixing, wherein a premixing unit is arranged at the inlet end of a fluid channel, and the premixing unit is used for premixing two fluids before the two fluids enter the fluid channel, so that the mass transfer efficiency is improved, and the mass transfer effect is improved; the micro-reaction units sequentially carry out mixed reaction on the two fluids, and the mixed fluids flow out of the micro-reactor through the reactant outlet; in the mixing reaction process of the micro-reactor on the fluid, the first heat transfer plate and the second heat transfer plate conduct heat on two fluids in the runner plate, so that molecular flow in the fluid is more active, the mixing effect and the reaction efficiency of the two fluids in the runner plate are improved, and the problems that the micro-reactor in the prior art is unfavorable for mixing of the molecular flow and the mixture due to no premixing process and no temperature regulation function, and the mixing effect of the fluid is poor and the efficiency is low are solved.
Description
Technical Field
The invention relates to the technical field of microreactors, in particular to a microreactor for strengthening fluid mixing.
Background
In recent years, microreactor technology has received increasing attention, and has become a significant issue. Microreactor technology has been widely used in many fields such as biological analysis, medical diagnosis, petrochemical industry, and the like. The rapid and effective mixing is vital in many microfluidic reactor systems, takes a microstructure unit as a core, strengthens mixing and transmission by reducing the dispersion scale of the system, and has the advantages of high mixing capacity, good mass and heat transfer characteristics, highly controllable reaction process and the like.
The micro-reactor in the prior art has short reaction distance and no premixing process, and most of the micro-reactor is folded spatially, but the actual reaction length is generally tens of millimeters, the temperature regulation performance is poor, and the micro-reactor is not beneficial to the mixing of molecular flow and mixture; the invention discloses a reaction process controllable microreactor and a preparation method thereof, wherein the reaction process controllable microreactor comprises a fluid channel layer and a sealing layer, a reaction flow channel, a junction area and at least two feeding flow channels are arranged on the surface of the fluid channel layer, and the junction area is arranged at the junction of the tail end of the at least two feeding flow channels and the beginning end of the reaction flow channel. The channel structure is a micro-bending structure, so that the fluid is repeatedly folded and collided, and the mixing effect of the fluid is effectively improved. However, the channel structure is short, so that reactants cannot be fully mixed, and the reaction is carried out at room temperature, so that the temperature regulation function is not realized, and the molecular flow and the mixture mixing are not facilitated.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a micro-reactor for strengthening internal fluid mixing, which solves the problems that the micro-reactor in the prior art is unfavorable for the mixing of molecular flow and mixture due to no premixing process and no temperature regulation function, and has poor internal fluid mixing effect and low efficiency.
In order to achieve the above purpose, the invention adopts the following technical scheme: the invention provides a micro-reactor for strengthening internal fluid mixing, which comprises a first heat transfer plate, a channel upper cover plate, a runner plate and a second heat transfer plate which are sequentially arranged from top to bottom; a circular sealing ring is arranged between two adjacent plates;
the first heat transfer plate and the second heat transfer plate are used for heating the channel upper cover plate and the runner plate;
the upper end surface of the runner plate is concavely provided with a fluid channel, the inlet end of the fluid channel is provided with a premixing unit communicated with the fluid channel, and the middle part of the fluid channel is provided with a plurality of micro-reaction units; the channel upper cover plate is used for covering the upper end face of the flow channel plate;
the first heat transfer plate is provided with two reactant inlets and one reactant outlet; the two reactant inlets penetrate through the first heat transfer plate and the channel upper cover plate to be communicated with the premixing unit, and the reactant outlets penetrate through the first heat transfer plate and the channel upper cover plate to be communicated with the outlet end of the fluid channel;
the premixing unit comprises a premixing main channel which is bent and sunken and is arranged on the upper end surface of the flow channel plate, two premixing branch channels are arranged at the inlet end of the premixing main channel, two reactant inlets are respectively communicated with the two premixing branch channels, and a certain included angle is formed between the two premixing branch channels; the outlet end of the premixing main channel is communicated with the inlet end of the fluid channel.
The principle of the micro-reactor for strengthening the mixing of the fluid in the invention is as follows: two fluids to be mixed are respectively introduced into the flow channel plate through two reactant inlets, the two fluids firstly enter the premixing unit, the flow direction of the two fluids is changed by the premixing unit, and the two fluids are premixed before entering the fluid channel, so that the mass transfer efficiency is improved, and the mass transfer effect is improved; then the two fluids enter a plurality of micro-reaction units through fluid channels, the micro-reaction units sequentially carry out mixed reaction on the two fluids, and the mixed fluids flow out of the micro-reactor through a reactant outlet; in the mixing reaction process of the micro-reactor on the fluid, the first heat transfer plate and the second heat transfer plate conduct heat on two fluids in the runner plate, so that molecular flow in the fluid is more active, the mixing effect and the reaction efficiency of the two fluids in the runner plate are improved, and the problems that the micro-reactor in the prior art is unfavorable for mixing of the molecular flow and the mixture due to no premixing process and no temperature regulation function, and the mixing effect of the fluid is poor and the efficiency is low are solved.
Further, the included angle between the two premixing branch channels is 30-120 degrees, and in the process that two fluids enter the premixing main channel through the two premixing branch channels respectively, the two fluids collide with each other to change the flow direction of molecules.
Further, the width of the premixing main channel is larger than that of the fluid channel, so that the purpose of the arrangement is that when two fluids flow into the fluid channel from the premixing main channel in the premixing unit, the two fluids flow into the narrow channel from the wide channel, the flow rate of the two fluids is improved, the effect of improving the flow rate of the two fluids is achieved, and the mass transfer efficiency is further improved.
Further, the fluid channel is in a bent serpentine structure, and an inlet end and an outlet end of the fluid channel are respectively positioned at two sides of the upper end face of the flow channel plate in the length direction; the micro-reaction units are uniformly arranged in the middle of the fluid channel at intervals. The beneficial effects of the technical scheme are as follows: the fluid path of the fluid channel can be prolonged on the upper end surface of the flow channel plate with a limited area, and the fluid channel is in a bending structure, so that a folding flow is formed and is easier to mix, and the mixing time of the fluid is prolonged; meanwhile, more micro-reaction units can be arranged on the fluid channel as much as possible, so that the mixing effect of the whole micro-reactor is comprehensively improved.
Further, the circular sealing ring is arranged on the upper end face of the runner plate, and the fluid channel and the premixing unit are both positioned in the area where the inner ring of the circular sealing ring is positioned; the circular sealing ring is used for sealing the gap between two adjacent plates and avoiding leakage of reaction fluid.
Further, as a specific arrangement mode of the micro-reaction units, each micro-reaction unit comprises a mixing cavity communicated with the fluid channel, wherein the mixing cavity is formed by downwards grooving on the upper surface of the runner plate and comprises an inlet section, an expansion section and an outlet section which are mutually communicated, and a plurality of flow dividing columns are arranged in the inlet section; a plurality of diversion baffles are arranged in the expansion section; and a turbulent flow column is arranged in the outlet section.
Further, a first split column, a second split column and a third split column are arranged in the inlet section;
the first flow dividing column is arranged in the middle of the inlet section, the second flow dividing column and the third flow dividing column are symmetrically arranged on two sides below the first flow dividing column, and fluid after being divided by the first flow dividing column passes through the second flow dividing column and the third flow dividing column respectively;
a first flow dividing baffle, a second flow dividing baffle, a third flow dividing baffle and a fourth flow dividing baffle which are positioned below the second flow dividing column and the third flow dividing column are sequentially arranged in the expansion section from left to right;
the first flow dividing baffle plate and the fourth flow dividing baffle plate are obliquely arranged in a splayed structure, and the second flow dividing baffle plate and the third flow dividing baffle plate are obliquely arranged in an inward splayed structure; the outside fluid split by the second split column and the third split column passes through the first split baffle and the fourth split baffle respectively, and the inside fluid split by the second split column and the third split column passes through the second split column and the third split column respectively;
the middle position of the inlet section is provided with a turbulent flow column, the turbulent flow column is of a triangular prism structure, the turbulent flow column is located in the middle of the lower part of the second flow dividing column and the third flow dividing column, and one edge of the turbulent flow column faces the second flow dividing column and the third flow dividing column.
The beneficial effects of the technical scheme are as follows: when the fluid passes through the first diversion column in the inlet section, a single fluid in the inlet section is diverted to form left and right two streams of fluid, and then the left and right two streams of fluid are diverted by the second diversion column and the third diversion column to form four streams of fluid when flowing downwards, and the four streams of fluid continue to flow downwards, and the fluid at the leftmost side enters the areas of the first diversion baffle and the left side wall of the expansion section, so that the current fluid is guided; the two fluid flows in the middle enter between the second flow dividing baffle and the third flow dividing baffle to realize the converging and guiding functions of the two fluid flows in the middle, and the fluid at the rightmost side enters into the area with side walls of the fourth flow dividing baffle and the expansion section to realize the guiding of the current fluid; the two fluid flows which are converged downwards and continuously flow, the two fluid flows are respectively split into two fluid flows through the edges of the turbulent flow column, the two fluid flows are respectively converged with the fluid which is guided by the first split baffle and the fourth split baffle and flow out of the mixing cavity, and in the process, the fluid flows are respectively split, guided and converged by the split flow column, the split flow baffle and the turbulent flow column, so that the multiple split flow and the multiple mixing of the fluid are realized, and the mixing effect is excellent; meanwhile, the plane of the turbulent flow column faces to the outlet of the outlet section, so that the backflow of the fluid can be prevented to a certain extent.
Further, the width of both the inlet section and the outlet section is less than the width of the fluid channel; the width of the expansion section is greater than the width of the fluid channel; the side walls of both sides of the inlet section and the outlet section are arc curved surfaces. The inlet section, the expansion section and the outlet section are connected smoothly, so that the fluid in the mixing cavity is distributed uniformly.
Further, as a specific arrangement mode of the first heat transfer plate and the second heat transfer plate, the lower end face of the first heat transfer plate and the upper end face of the second heat transfer plate are both provided with the circular sealing rings;
a first heating area is concavely arranged on the lower end surface of the first heat transfer plate, a plurality of heat conducting strips are arranged in the first heating area, and a first heat conducting oil inlet and a first heat conducting oil outlet which are communicated with the first heating area are arranged on the first heat transfer plate in a penetrating manner;
the upper end face of the second heat transfer plate is concavely provided with a second heating area, a plurality of heat conducting strips are arranged in the second heating area, and a second heat conducting oil inlet and a second heat conducting oil outlet which are communicated with the second heating area are arranged on the second heat transfer plate in a penetrating mode. Through the conduction oil after to first heat transfer layer and the pump of second heat transfer layer after the heating, realize the heat conduction effect, simultaneously because the setting of conducting strip, can lead the conduction oil, the circulation route of control conduction oil can make the conduction oil fully play the heat conduction effect.
Further, the middle part of the fluid channel comprises a plurality of vertical channels which are arranged at intervals, and two adjacent vertical channels are communicated through a transverse horizontal channel; a plurality of micro-reaction units are uniformly arranged on each vertical channel at intervals; the micro-reaction unit is not arranged at the outlet end of the fluid channel, so that long-distance residence time is reserved when the mixed fluid flows out through the outlet end of the fluid channel, and the mixed fluid flows out of the whole micro-reactor more stably.
The beneficial effects of the invention are as follows: according to the micro-reactor for strengthening the mixing of the fluid, the inlet end of the fluid channel is provided with the premixing unit, and the premixing unit is used for premixing two fluids before the two fluids enter the fluid channel, so that the mass transfer efficiency is improved, and the mass transfer effect is improved; the micro-reaction units sequentially carry out mixed reaction on the two fluids, and the mixed fluids flow out of the micro-reactor through the reactant outlet; in the mixing reaction process of the micro-reactor on the fluid, the first heat transfer plate and the second heat transfer plate conduct heat on two fluids in the runner plate, so that molecular flow in the fluid is more active, the mixing effect and the reaction efficiency of the two fluids in the runner plate are improved, and the problems that the micro-reactor in the prior art is unfavorable for mixing of the molecular flow and the mixture due to no premixing process and no temperature regulation function, and the mixing effect of the fluid is poor and the efficiency is low are solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. The above and other objects, features and advantages of the present invention will become more apparent from the accompanying drawings. Like reference numerals refer to like parts throughout the several views of the drawings. The drawings are not intended to be drawn to scale, with emphasis instead being placed upon illustrating the principles of the invention.
FIG. 1 is a schematic diagram of a microreactor with enhanced internal fluid mixing.
Fig. 2 is a schematic structural view of a flow channel plate.
Fig. 3 is a schematic bottom view of the first heat transfer plate.
Fig. 4 is a schematic top view of the second heat transfer plate.
FIG. 5 is an enlarged schematic view of the structure of a single microreaction unit.
1, a first heat transfer plate; 2. a channel upper cover plate; 3. a flow channel plate; 4. a second heat transfer plate; 5. a circular sealing ring; 6. a fluid channel; 7. a premix unit; 8. a micro-reaction unit; 9. a reactant inlet; 10. a reactant outlet; 11. premixing a main channel; 12. premixing branch channels; 13. a mixing chamber; 14. an inlet section; 15. an expansion section; 16. an outlet section; 17. a first split column; 18. a second split column; 19. a third split column; 20. a first split baffle; 21. a second flow dividing baffle; 22. a third split baffle; 23. a fourth split baffle; 24. a turbulent flow column; 25. a first heating zone; 26. a heat conducting strip; 27. a first conduction oil inlet; 28. a first thermally conductive oil outlet; 29. a second heating region; 30. a second conduction oil inlet; 31. a second conduction oil outlet; 32. a vertical channel; 33. the transverse horizontal channels are communicated.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
As shown in fig. 1 to 5, the present embodiment provides a microreactor for enhancing internal fluid mixing, which comprises a first heat transfer plate 1, a channel upper cover plate 2, a flow channel plate 3 and a second heat transfer plate 4 which are sequentially arranged from top to bottom; a circular sealing ring 5 is arranged between two adjacent plates, and the circular sealing ring 5 is used for sealing a gap between the two adjacent plates, so that leakage and temperature loss of reaction fluid are avoided; the first heat transfer plate 1 and the second heat transfer plate 4 are used for heating the channel upper cover plate 2 and the flow channel plate 3.
The upper end surface of the runner plate 3 is concavely provided with a fluid channel 6, the inlet end of the fluid channel 6 is provided with a premixing unit 7 communicated with the fluid channel 6, and the middle part of the fluid channel 6 is provided with a plurality of micro-reaction units 8; the channel upper cover plate 2 is used for covering the upper end face of the flow channel plate 3.
The first heat transfer plate 1 is provided with two reactant inlets 9 and one reactant outlet 10; both of said reactant inlets 9 communicate with said pre-mix unit 7 through the first heat transfer plate 1 and the channel top cover plate 2, and said reactant outlets 10 communicate with the outlet ends of the fluid channels 6 through the first heat transfer plate 1 and the channel top cover plate 2.
The premixing unit 7 comprises a premixing main channel 11 which is arranged on the upper end surface of the runner plate 3 in a bending and concave manner, two premixing branch channels 12 are arranged at the inlet end of the premixing main channel 11, two reactant inlets 9 are respectively communicated with the two premixing branch channels 12, and a certain included angle is formed between the two premixing branch channels 12; the outlet end of the premix main passage 11 communicates with the inlet end of the fluid passage 6.
The reaction process of the micro-reactor for strengthening the mixing of the fluid in the invention is as follows: two fluids to be mixed are respectively introduced into the flow channel plate 3 through two reactant inlets 9, the two fluids firstly enter the premixing unit 7, and the premixing unit 7 changes the fluid flow direction of the two fluids, so that the two fluids are premixed before entering the fluid channel 6, thereby being beneficial to improving the mass transfer efficiency and achieving the effect of improving the mass transfer; then the two fluids enter a plurality of micro-reaction units 8 through a fluid channel 6, the micro-reaction units 8 sequentially carry out mixed reaction on the two fluids, and the mixed fluids flow out of the micro-reactor through a reactant outlet 10; in the process of mixing and reacting fluids by the microreactor, the first heat transfer plate 1 and the second heat transfer plate 4 conduct heat to two fluids in the runner plate 3, so that molecular flow in the fluids is more active, the mixing effect and the reaction efficiency of the two fluids in the runner plate 3 are improved, and the problems that the microreactor in the prior art is unfavorable for mixing of the molecular flow and the mixture due to no premixing process and no temperature regulation function are solved, and the problems of poor mixing effect and low efficiency of the fluids exist.
In this embodiment, as shown in fig. 2, the included angle between the two pre-mixing branch channels 12 is 30 ° to 120 °, and in the process that two fluids enter the pre-mixing main channel 11 through the two pre-mixing branch channels 12 respectively, the two fluids collide with each other, so as to change the flow direction of the molecules.
Preferably, but not limited to, the width of the main premixing passage 11 is larger than the width of the fluid passage 6, so that when two fluids flow from the main premixing passage 11 in the premixing unit 7 into the fluid passage 6, the two fluids flow from the wide passage into the narrow passage, thereby achieving an increase in the flow rate of the two fluids, and further improving the mass transfer efficiency.
Preferably, the fluid channel 6 has a curved serpentine structure, and an inlet end and an outlet end of the fluid channel 6 are respectively located at two sides of the upper end surface of the flow channel plate 3 in the length direction; the micro-reaction units 8 are uniformly arranged at intervals in the middle of the fluid channel 6. The beneficial effects of the technical scheme are as follows: the fluid path of the fluid channel 6 can be prolonged on the upper end surface of the flow channel plate 3 with a limited area, and the fluid channel is in a bending structure, so that a folding flow is formed, the mixing is easier, and the mixing time of the fluid is prolonged; meanwhile, more micro-reaction units 8 can be arranged on the fluid channel 6 as much as possible, so that the mixing effect of the whole micro-reactor is comprehensively improved.
The circular sealing ring 5 is arranged on the upper end surface of the runner plate 3, and the fluid channel 6 and the premixing unit 7 are both positioned in the area where the inner ring of the circular sealing ring 5 is positioned; the circular sealing ring 5 is used for sealing the gap between two adjacent plates and avoiding leakage of reaction fluid.
As shown in fig. 5, as a specific arrangement mode of the micro-reaction units 8, each micro-reaction unit 8 includes a mixing cavity 13 communicated with the fluid channel 6, the mixing cavity 13 is formed by grooving downwards on the upper surface of the runner plate 3, the mixing cavity 13 includes an inlet section 14, an expansion section 15 and an outlet section 16 which are mutually communicated, and a plurality of diversion columns are arranged in the inlet section 14; a plurality of diversion baffles are arranged in the expansion section 15; a spoiler column 24 is provided in the outlet section 16.
As a specific arrangement mode of the diversion column, the diversion baffle and the turbulent flow column 24, the inlet section 14 is internally provided with a first diversion column 17, a second diversion column 18 and a third diversion column 19; the first flow dividing column 17 is disposed in the middle of the inlet section 14, and the second flow dividing column 18 and the third flow dividing column 19 are symmetrically disposed on two sides below the first flow dividing column 17, and the fluid after being divided by the first flow dividing column 17 passes through the second flow dividing column 18 and the third flow dividing column 19 respectively.
The expansion section 15 is provided with a first diversion baffle 20, a second diversion baffle 21, a third diversion baffle 22 and a fourth diversion baffle 23 which are positioned below the second diversion column 18 and the third diversion column 19 in sequence from left to right.
The first diversion baffle 20 and the fourth diversion baffle 23 are obliquely arranged in a splayed structure, and the second diversion baffle 21 and the third diversion baffle 22 are obliquely arranged in an inward splayed structure; the outside fluid split by the second split column 18 and the third split column 19 passes through the first split baffle 20 and the fourth split baffle 23, respectively, and the inside fluid split by the second split column 18 and the third split column 19 passes through the second split column 18 and the third split column 19, respectively.
The middle position of the inlet section 14 is provided with a turbulent flow column 24, the turbulent flow column 24 is in a triangular prism structure, the turbulent flow column 24 is positioned at the lower middle parts of the second flow distribution column 18 and the third flow distribution column 19, and one edge of the turbulent flow column 24 faces the second flow distribution column 18 and the third flow distribution column 19.
When the fluid passes through the first diversion column 17 in the inlet section 14, a single fluid in the inlet section 14 is diverted to form left and right two streams of fluid, and then the left and right two streams of fluid are diverted by the second diversion column 18 and the third diversion column 19 to form four streams of fluid when flowing downwards, and the four streams of fluid continue to flow downwards, and the fluid at the leftmost side enters the areas of the first diversion baffle 20 and the left side wall of the expansion section 15, so that the current fluid is guided; the two middle streams enter between the second flow dividing baffle 21 and the third flow dividing baffle 22 to realize the converging guiding function of the two middle streams, and the stream at the rightmost side enters into the area with side walls of the fourth flow dividing baffle 23 and the expansion section 15 to realize the guiding of the current stream; the two fluid streams which are converged flow downwards continuously, are respectively split into two fluid streams through the edges of the turbulent flow column 24, and the two fluid streams are respectively converged with the fluid streams which are guided by the first split baffle 20 and the fourth split baffle 23 and flow out of the mixing cavity 13, and in the process, the fluid streams are respectively split, guided and converged by the split flow column, the split flow baffle and the turbulent flow column 24, so that the multiple split flow and the multiple mixing of the fluid streams are realized, and the mixing effect is excellent; at the same time, the flow reversal is prevented to some extent because the plane of the spoiler column 24 faces the outlet of the outlet section 16.
Preferably, but not limited to, the width of both the inlet section 14 and the outlet section 16 is smaller than the width of the fluid channel 6; the width of the expansion section 15 is greater than the width of the fluid channel 6; both side walls of the inlet section 14 and the outlet section 16 are arc curved surfaces. The connection of the inlet section 14, the expansion section 15 and the outlet section 16 is smoothed, so that the fluid distribution in the mixing chamber 13 is uniform.
As shown in fig. 3 and 4, as a specific arrangement of the first heat transfer plate 1 and the second heat transfer plate 4, the circular seal ring 5 is provided on both the lower end surface of the first heat transfer plate 1 and the upper end surface of the second heat transfer plate 4.
The lower end surface of the first heat transfer plate 1 is concavely provided with a first heating area 25, a plurality of heat conducting strips 26 are arranged in the first heating area 25, and a first heat transfer oil inlet 27 and a first heat transfer oil outlet 28 which are communicated with the first heating area 25 are penetratingly arranged on the first heat transfer plate 1.
The second heat transfer plate 4 is provided with a second heating area 29 in a concave manner on the upper end surface, a plurality of heat conducting strips 26 are arranged in the second heating area 29, and a second heat conducting oil inlet 30 and a second heat conducting oil outlet 31 which are communicated with the second heating area 29 are arranged on the second heat transfer plate 4 in a penetrating manner. Through the conduction oil after to first heat transfer layer and the pump of second heat transfer layer after the heating, realize the heat conduction effect, simultaneously owing to the setting of conducting strip 26, can lead the conduction oil, control the circulation path of conduction oil, can make the conduction oil fully play the heat conduction effect.
Specifically, as shown in fig. 2, the middle part of the fluid channel 6 includes a plurality of vertical channels 32 arranged at intervals, and two adjacent vertical channels 32 are communicated 33 through a horizontal channel; a plurality of micro-reaction units 8 are uniformly arranged on each vertical channel 32 at intervals; the micro-reaction unit 8 is not arranged at the outlet end of the fluid channel 6, so that long-distance residence time is reserved when the mixed fluid flows out through the outlet end of the fluid channel 6, and the mixed fluid flows out of the whole micro-reactor more stably.
In summary, the micro-reactor for strengthening the mixing of the internal fluid has the function of pre-mixing and no temperature regulation, is favorable for the mixing of the molecular flow and the mixture, and improves the mixing effect and efficiency of the internal fluid.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The micro-reactor for strengthening the internal fluid mixing is characterized by comprising a first heat transfer plate, a channel upper cover plate, a runner plate and a second heat transfer plate which are sequentially arranged from top to bottom; a circular sealing ring is arranged between two adjacent plates;
the first heat transfer plate and the second heat transfer plate are used for heating the channel upper cover plate and the runner plate;
the upper end surface of the runner plate is concavely provided with a fluid channel, the inlet end of the fluid channel is provided with a premixing unit communicated with the fluid channel, and the middle part of the fluid channel is provided with a plurality of micro-reaction units; the channel upper cover plate is used for covering the upper end face of the flow channel plate;
the first heat transfer plate is provided with two reactant inlets and one reactant outlet; the two reactant inlets penetrate through the first heat transfer plate and the channel upper cover plate to be communicated with the premixing unit, and the reactant outlets penetrate through the first heat transfer plate and the channel upper cover plate to be communicated with the outlet end of the fluid channel;
the premixing unit comprises a premixing main channel which is bent and sunken and is arranged on the upper end surface of the flow channel plate, two premixing branch channels are arranged at the inlet end of the premixing main channel, two reactant inlets are respectively communicated with the two premixing branch channels, and a certain included angle is formed between the two premixing branch channels; the outlet end of the premixing main channel is communicated with the inlet end of the fluid channel.
2. The enhanced internal fluid mixing microreactor of claim 1 wherein the included angle between two of said pre-mixed branch channels is between 30 ° and 120 °.
3. The enhanced internal fluid mixing microreactor of claim 1 wherein the width of the premix main channel is greater than the width of the fluid channel.
4. The micro-reactor for enhancing internal fluid mixing according to claim 3, wherein the fluid channel has a curved serpentine structure, and the inlet end and the outlet end of the fluid channel are respectively positioned at two sides of the upper end surface of the flow channel plate in the length direction; the micro-reaction units are uniformly arranged in the middle of the fluid channel at intervals.
5. The micro-reactor for enhancing internal fluid mixing according to claim 4, wherein the upper end surface of the flow channel plate is provided with the circular sealing ring, and the fluid channel and the premixing unit are both positioned in the area where the inner ring of the circular sealing ring is positioned.
6. The enhanced internal fluid mixing microreactor of claim 5, wherein each of said microreaction units comprises a mixing chamber in communication with said fluid channel, said mixing chamber being formed by downwardly slotted openings in said flow conduit plate upper surface, said mixing chamber comprising an inlet section, an expansion section and an outlet section in communication with each other, said inlet section having a plurality of flow dividing columns disposed therein; a plurality of diversion baffles are arranged in the expansion section; and a turbulent flow column is arranged in the outlet section.
7. The enhanced internal fluid mixing microreactor of claim 6, wherein a first split column, a second split column, and a third split column are disposed within the inlet section;
the first flow dividing column is arranged in the middle of the inlet section, the second flow dividing column and the third flow dividing column are symmetrically arranged on two sides below the first flow dividing column, and fluid after being divided by the first flow dividing column passes through the second flow dividing column and the third flow dividing column respectively;
a first flow dividing baffle, a second flow dividing baffle, a third flow dividing baffle and a fourth flow dividing baffle which are positioned below the second flow dividing column and the third flow dividing column are sequentially arranged in the expansion section from left to right;
the first flow dividing baffle plate and the fourth flow dividing baffle plate are obliquely arranged in a splayed structure, and the second flow dividing baffle plate and the third flow dividing baffle plate are obliquely arranged in an inward splayed structure; the outside fluid split by the second split column and the third split column passes through the first split baffle and the fourth split baffle respectively, and the inside fluid split by the second split column and the third split column passes through the second split column and the third split column respectively;
the middle position of the inlet section is provided with a turbulent flow column, the turbulent flow column is of a triangular prism structure, the turbulent flow column is located in the middle of the lower part of the second flow dividing column and the third flow dividing column, and one edge of the turbulent flow column faces the second flow dividing column and the third flow dividing column.
8. The enhanced internal fluid mixing microreactor of claim 7, wherein the width of both the inlet and outlet segments is less than the width of the fluid channel; the width of the expansion section is greater than the width of the fluid channel; the side walls of both sides of the inlet section and the outlet section are arc curved surfaces.
9. The enhanced fluid mixing microreactor of claim 8, wherein the lower end face of the first heat transfer plate and the upper end face of the second heat transfer plate are both provided with the circular sealing ring;
a first heating area is concavely arranged on the lower end surface of the first heat transfer plate, a plurality of heat conducting strips are arranged in the first heating area, and a first heat conducting oil inlet and a first heat conducting oil outlet which are communicated with the first heating area are arranged on the first heat transfer plate in a penetrating manner;
the upper end face of the second heat transfer plate is concavely provided with a second heating area, a plurality of heat conducting strips are arranged in the second heating area, and a second heat conducting oil inlet and a second heat conducting oil outlet which are communicated with the second heating area are arranged on the second heat transfer plate in a penetrating mode.
10. The microreactor for enhancing internal fluid mixing according to claim 9 wherein the middle part of the fluid channel comprises a plurality of vertical channels arranged at intervals, and two adjacent vertical channels are communicated through a transverse horizontal channel; a plurality of micro-reaction units are uniformly arranged on each vertical channel at intervals; the outlet end of the fluid channel is not provided with a micro-reaction unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311407416.0A CN117244496A (en) | 2023-10-27 | 2023-10-27 | Micro-reactor for strengthening internal fluid mixing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311407416.0A CN117244496A (en) | 2023-10-27 | 2023-10-27 | Micro-reactor for strengthening internal fluid mixing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117244496A true CN117244496A (en) | 2023-12-19 |
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ID=89126519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311407416.0A Pending CN117244496A (en) | 2023-10-27 | 2023-10-27 | Micro-reactor for strengthening internal fluid mixing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117244496A (en) |
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2023
- 2023-10-27 CN CN202311407416.0A patent/CN117244496A/en active Pending
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