CN112403413A - Integrated countercurrent strengthening microreactor - Google Patents
Integrated countercurrent strengthening microreactor Download PDFInfo
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- CN112403413A CN112403413A CN202011046332.5A CN202011046332A CN112403413A CN 112403413 A CN112403413 A CN 112403413A CN 202011046332 A CN202011046332 A CN 202011046332A CN 112403413 A CN112403413 A CN 112403413A
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- 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
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/40—Static mixers
- B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
- B01F25/421—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions by moving the components in a convoluted or labyrinthine path
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- B01J19/0013—Controlling the temperature of the process
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- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0046—Sequential or parallel reactions, e.g. for the synthesis of polypeptides or polynucleotides; Apparatus and devices for combinatorial chemistry or for making molecular arrays
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- B01J19/0053—Details of the reactor
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- B01J2219/00051—Controlling the temperature
- B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
- B01J2219/00076—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements inside the reactor
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- 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
- B01J2219/00164—Controlling or regulating processes controlling the flow
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Abstract
The invention provides an integrated countercurrent reinforced microreactor, which comprises a shell and a core body; the core body is arranged in the shell, a plurality of layers of reaction units are stacked in the core body, and a layer of heat tracing unit is arranged between every two adjacent reaction units; the reaction unit consists of a plurality of reaction channels which are arranged on the same plane in parallel, and the heat tracing unit is provided with heat tracing channels which correspond to the reaction channels on the adjacent reaction units one by one; the corresponding reaction channel and the heat tracing channel are arranged on a plane parallel to the reaction unit and the heat tracing unit, and the projected axes of the reaction channel and the heat tracing channel are collinear. In the invention, the reaction channels are arranged in parallel and the reaction units are arranged in a stacked manner, so that a multi-channel microreactor is realized, and a plurality of reaction channels are distributed in order. And, through the corresponding setting of companion's heat channel and reaction channel, guaranteed the temperature control effect to each reaction channel, guaranteed the reaction efficiency in each reaction channel.
Description
Technical Field
The invention relates to the field of microreactors, in particular to an integrated countercurrent enhanced microreactor.
Background
At present, the chemical process is developed towards the direction of fineness and miniaturization, a micro chemical system based on novel equipment such as micro-flow control, micro-reaction, micro-mixing, micro-separation, micro-thermal equipment and the like and a matched process technology thereof is formed, and the micro chemical system has the characteristics of small volume, low energy consumption, high yield and the like. In a microchemical system, a microreactor is a core. The micro-reactor is a compact three-dimensional structural element with the characteristic size of 10-1000 mu m, can be used for chemical reaction, has large specific surface area and heat transfer performance, and can realize the precise control of the reaction process. The micro-reactor is a continuous flow type reactor, and compared with the traditional batch reactor, the micro-reactor has the advantages of high heat exchange and mass transfer efficiency, high integration, strict control of reaction time, high selectivity and the like, but the design and manufacture difficulty is higher, the channel is easy to block, and an accurate process design and control method are needed. It is especially suitable for the extreme chemical reactions such as instant reaction, rapid reaction, strong heat absorption and release reaction, and inflammable and explosive reactions.
In the aspect of amplification of the reactor, because the microchannel reactor is amplified in a mode of 'number amplification' in a mode of increasing the number of channels or plates, theoretically, the amplification effect of the reactor does not exist, the conditions of deteriorated reaction conditions, poor yield and selectivity and the like caused by laboratory lab scale test devices, pilot scale test devices, industrial-grade application and the like of the traditional reactor can be avoided, a large amount of investment and time cost are saved, and the efficient utilization of materials is realized.
In recent years, the design and manufacturing technology and products related to more microchannel reactors in China really show some advantages compared with the traditional batch tank reactor, but the batch tank reactor has some limitations at present: the designed material injection, micro-reaction and micro-mixing modules need to be connected through external pipelines, valves, pumps and the like, and cannot be integrated; the amplification of the number of the microreactors can only be realized by connecting a plurality of microreactors in series, which often causes higher equipment cost and control cost; in the prior art, the reaction production capacity is still weak, and the reaction yield is low.
Disclosure of Invention
In order to overcome the defects of low microreactor integration level, small number of reaction channels and low reaction yield in the prior art, the invention provides an integrated countercurrent enhanced microreactor.
The invention adopts the following technical scheme:
an integrated countercurrent intensified microreactor comprises a shell and a core; the core body is arranged in the shell, a plurality of layers of reaction units are stacked in the core body, and a layer of heat tracing unit is arranged between every two adjacent reaction units;
each layer of reaction unit consists of a plurality of reaction channels which are arranged on the same plane in parallel, and the heat tracing units are provided with heat tracing channels which correspond to the reaction channels on the adjacent reaction units one by one; the corresponding reaction channel and the heat tracing channel are collinear on the projection axes parallel to the planes of the reaction unit and the heat tracing unit;
a feed inlet and a discharge outlet are respectively arranged on the core body corresponding to each reaction channel, and two ends of each reaction channel are respectively communicated with the corresponding feed inlet and discharge outlet; the core body is provided with a heat tracing inlet and a heat tracing outlet corresponding to each heat tracing channel, and the two ends of each heat tracing channel are respectively communicated with the corresponding heat tracing inlet and the corresponding heat tracing outlet.
Preferably, the feed inlet of each reaction channel and the heat tracing outlet of the corresponding heat tracing channel are positioned on the same side of the core body; the discharge port of each reaction channel and the heat tracing inlet of the corresponding heat tracing channel are positioned at the same side of the core body.
Preferably, the core is formed by stacking reaction thin plates and heat tracing plates which are alternately distributed, wherein the reaction thin plates are provided with groove structures used as reaction channels, and the heat tracing plates are provided with groove structures used as heat tracing channels.
Preferably, the inner wall of the reaction channel has a wave-shaped structure or a zigzag structure.
Preferably, the reaction channels are in the shape of a rectangular wave on the reaction sheet.
Preferably, the shell is also provided with a first material inlet pipe box and a second material inlet pipe box; a first material input connecting pipe and a second material input connecting pipe for inputting materials are respectively arranged on the first material inlet pipe box and the second material inlet pipe box;
the upper surface and the lower surface of the inlet side of each reaction channel corresponding to each reaction channel on the reaction sheet are provided with corresponding feed channels which are respectively marked as a first feed channel and a second feed channel; a material mixing channel communicated with the corresponding feed inlet is also arranged on the reaction sheet corresponding to each reaction channel; the diameter of the material combining channel is larger than that of the first feeding channel and that of the second feeding channel;
the first feeding channel and the material combining channel are positioned on the same surface of the reaction thin plate and are connected with each other; one end of the first feeding channel, which is far away from the material mixing channel, is communicated with a first material inlet pipe box;
the reaction sheet is also provided with a transition structure for communicating the second feeding channel with the material mixing channel, and one end of the second feeding channel, which is far away from the transition structure, is communicated with a second material inlet pipe box.
Preferably, the transition structure is a divergent channel structure with one end connected with the second feeding channel and the other end connected with the material mixing channel.
Preferably, the transition structure is a groove structure arranged perpendicular to the axis of the material mixing channel, the top opening of the transition structure is intersected with the material mixing channel, and the bottom of the transition structure is communicated with the second feeding channel; and the top opening of the transition structure is positioned at the connecting position of the first feeding channel and the material mixing channel.
Preferably, the shell is also provided with a generating material outlet pipe box, a heat tracing side inlet pipe box and a heat tracing side outlet pipe box;
the generated material outlet pipe box is communicated with the discharge ports of the reaction channels, and a generated material output connecting pipe is arranged on the generated material outlet pipe box;
the heat tracing side inlet pipe box is provided with a heat tracing stream input connecting pipe and a stream inlet which corresponds to and is communicated with the heat tracing inlets of the heat tracing channels; and a heat tracing stream output connecting pipe and a stream outlet which corresponds to and is communicated with the heat tracing outlets of the heat tracing channels are arranged on the heat tracing side outlet pipe box.
Preferably, a reinforced mixing structure is arranged between each reaction channel and the corresponding feed inlet; the reinforced mixing structure consists of a plurality of mixing cavities which are connected in series on the same flow channel; the mixing cavity comprises a shell and a blocking part, the shell is provided with an inlet and an outlet, the blocking part is arranged in the shell and positioned between the inlet and the outlet, and a gap channel for communicating the inlet and the outlet is formed between the blocking part and the shell; the baffle part is a concave panel, and the concave surface of the baffle part faces the inlet; the area of the baffle part is larger than that of the inlet and the outlet.
The invention has the advantages that:
(1) through the parallel arrangement of the reaction channels and the stacking arrangement of the reaction units, a multi-channel microreactor is realized, and a plurality of reaction channels are distributed in order. And, through the corresponding setting of companion's heat channel and reaction channel, guaranteed the temperature control effect to each reaction channel, guaranteed the reaction efficiency in each reaction channel.
(2) The independence of each reaction channel and each heat tracing channel is ensured, the control of the reaction efficiency in the reaction channels and the temperature effect in the heat tracing channels is more facilitated, and the consistency of the reaction yield in different reaction channels is ensured.
(3) The material flow in the reaction channel is in counter current with the heat tracing flow, which is beneficial to ensuring the stability of the reaction environment of the reaction channel in the length direction.
(4) Through first feedstock channel, second feedstock channel, close material passageway and transition structure's setting, the first material of first feedstock channel input gets into with the rectilinear direction and closes the material passageway, and the second material of second feedstock channel input gets into with inserting the mode or the perpendicular mode to one side and closes the material passageway, and first material and second material form "T type" contained angle between the instantaneous velocity vector that gets into to close the material passageway, have made things convenient for the preliminary mixing of two kinds of materials.
(5) Through setting up intensive mixed structure, improved the mixed degree of material when getting into reaction channel, improved the reaction efficiency in the reaction channel.
Drawings
FIG. 1 is a schematic diagram of a reaction channel layout on a reaction cell;
FIG. 2 is a schematic view of the layout of the heat trace channels on the heat trace unit;
FIG. 3 is a schematic projection view of the reaction channel and the heat tracing channel on the same plane;
FIG. 4 is a schematic view of the layout of reaction channels on a reaction plate;
FIG. 5 is a schematic structural diagram of an integrated countercurrent enhanced microreactor according to the present invention;
FIG. 6 is a schematic view of a transition structure;
FIG. 7 is a schematic view of another transition structure;
FIG. 8 is a schematic view of yet another transition structure;
FIG. 9(a) is a schematic diagram of a mixing chamber structure;
FIG. 9(b) is a schematic diagram of an enhanced mixing structure using the mixing chamber shown in FIG. 9 (a);
FIG. 10(a) is a schematic view of another mixing chamber structure;
FIG. 10(b) is a schematic diagram of an enhanced mixing structure using the mixing chamber shown in FIG. 10 (a);
FIG. 11(a) is a schematic view of another mixing chamber structure;
FIG. 11(b) is a schematic diagram of an enhanced mixing structure using the mixing chamber shown in FIG. 11 (a);
FIG. 12 is a schematic projection view of the reaction channel and heat tracing channel of an integrated countercurrent microreactor employing an enhanced mixing structure on the same plane.
The figure is as follows: the device comprises a shell 1, a reaction thin plate 2, a reaction channel 2-1, a heat tracing channel 3-1 of a heat tracing plate 3, a first material inlet pipe box 4, a second material inlet pipe box 5, a first material input connecting pipe 4-1, a second material input connecting pipe 5-1, a first feeding channel 6, a second feeding channel 7, a material combining channel 8, a transition structure 9, a generated material outlet pipe box 10 and a generated material output connecting pipe 10-1, the heat tracing side inlet pipe box 12, the heat tracing flow input connecting pipe, the heat tracing side outlet pipe box 11, the heat tracing flow output connecting pipe 11-1, the intensified mixing structure 13, the shell 13-1, the baffle part 13-2, the inlet 13-3, the outlet 13-4, the first material A, the second material B, the generated material C, the heat tracing flow D, and the positions E of the first feeding channel, the second feeding channel and the material combining channel.
Detailed Description
The integrated countercurrent reinforced microreactor provided by the embodiment comprises a shell 1 and a core body. The core body is arranged in the shell 1, a plurality of layers of reaction units are stacked in the core body, and a layer of heat tracing unit is arranged between the adjacent reaction units.
Referring to fig. 1 and 2, each layer of reaction unit is composed of a plurality of reaction channels 2-1 arranged in parallel on the same plane. The heat tracing unit is provided with heat tracing channels 3-1 which are in one-to-one correspondence with the reaction channels 2-1 on the adjacent reaction units. Referring to fig. 3, in the present embodiment, the corresponding reaction channel 2-1 and heat trace channel 3-1 have collinear projected axes on a plane parallel to the reaction unit and the heat trace unit.
Thus, in the present embodiment, the parallel arrangement of the reaction channels 2-1 and the stacked arrangement of the reaction cells realize a multi-channel microreactor in which a plurality of reaction channels 2-1 are distributed in order. And the temperature control effect of each reaction channel 2-1 is ensured and the consistency of the reaction yield in each reaction channel 2-1 is ensured by the corresponding arrangement of the heat tracing channel 3-1 and the reaction channel 2-1.
A feed inlet and a discharge outlet are respectively arranged on the core body corresponding to each reaction channel 2-1, and two ends of each reaction channel 2-1 are respectively communicated with the corresponding feed inlet and discharge outlet; the core body is provided with a heat tracing inlet and a heat tracing outlet corresponding to each heat tracing channel 3-1, and the two ends of each heat tracing channel 3-1 are respectively communicated with the corresponding heat tracing inlet and the corresponding heat tracing outlet. Therefore, in the embodiment, the independence of each reaction channel 2-1 and each heat tracing channel 3-1 is ensured, the control of the reaction efficiency in the reaction channel 2-1 and the temperature effect in the heat tracing channel 3-1 is facilitated, and the consistency of the reaction yield in different reaction channels 2-1 is ensured.
Referring to fig. 3, in the present embodiment, the feed inlet of each reaction channel 2-1 and the heat tracing outlet of the corresponding heat tracing channel 3-1 are located at the same side of the core body; the discharge port of each reaction channel 2-1 and the heat tracing inlet of the corresponding heat tracing channel 3-1 are positioned at the same side of the core body. Therefore, the effect of material flow and heat tracing flow countercurrent in the reaction channel 2-1 is realized, and the stability of the reaction environment of the reaction channel 2-1 in the length direction is favorably ensured.
In the embodiment, the core is formed by stacking reaction thin plates 2 and heat tracing plates 3 which are alternately distributed, wherein the reaction thin plates 2 are provided with groove structures serving as reaction channels 2-1, and the heat tracing plates 3 are provided with groove structures serving as heat tracing channels 3-1. Specifically, in this embodiment, the reaction channel 2-1 may be formed on the reaction sheet 2 by etching. In the embodiment, the inner wall of the reaction channel 2-1 is in a wave-shaped structure or a zigzag structure so as to increase the collision chance of the materials in the reaction channel 2-1 with the inner wall in the flowing process, thereby improving the material mixing reaction efficiency. In specific implementation, the inner wall of the heat tracing channel 3-1 can also be arranged into a wave structure or a zigzag structure so as to enhance the secondary flow to strengthen the convection heat transfer, increase the heat exchange area and improve the temperature control effect on the reaction channel 2-1.
Specifically, in the present embodiment, the opening directions of the trench structures of the reaction channel and the heat tracing channel are the same. That is, when the reaction channel 2-1 is a groove structure with an upward opening on the reaction thin plate 2, the heat tracing channel 3-1 is a groove structure with an upward opening on the heat tracing plate 3; when the reaction channel 2-1 is a groove structure with a downward opening on the reaction thin plate 2, the heat tracing channel 3-1 is a groove structure with a downward opening on the heat tracing plate 3.
Referring to fig. 4, in the present embodiment, the reaction channels 2-1 are formed in a rectangular wave shape on the reaction sheet 2, so that the length of each reaction channel 2-1 is ensured under the condition that the surface area of the reaction sheet 2 is fully utilized, thereby ensuring the material reaction efficiency.
Referring to fig. 5, in the present embodiment, a first material inlet pipe box 4 and a second material inlet pipe box 5 are further disposed on the housing 1. The first material inlet pipe box 4 and the second material inlet pipe box 5 are respectively provided with a first material input connecting pipe 4-1 and a second material input connecting pipe 5-1 for inputting materials.
The reaction sheet 2 is provided with corresponding feed channels, which are respectively referred to as a first feed channel 6 and a second feed channel 7, on the upper and lower surfaces of the inlet side of each reaction channel 2-1. The reaction sheet 2 is also provided with a material mixing channel 8 corresponding to each reaction channel 2-1 and communicated with the corresponding feed inlet. The diameter of the material combining channel 8 is larger than that of the first feeding channel 6 and that of the second feeding channel 7;
the first feeding channel 6 and the material combining channel 8 are positioned on the same surface of the reaction thin plate 2 and are connected with each other; the end of the first feeding channel 6, which is far away from the material combining channel 8, is communicated with the first material inlet pipe box 4.
The reaction thin plate 2 is also provided with a transition structure 9 for communicating the second feeding channel 7 and the material combining channel 8, and one end of the second feeding channel 7 far away from the transition structure 9 is communicated with the second material inlet pipe box 5.
The arrangement of the first material inlet pipe box 4 and the second material inlet pipe box 5 is beneficial to ensuring the flow rate control and the proportion control of different materials. The first material inlet pipe box 4 obtains a first material through a first material input connecting pipe 4-1, and inputs the first material into a material combining channel 8 through a first feeding channel 6; the second material inlet pipe box 5 obtains the second material through the second material input connecting pipe 5-1, and inputs the second material into the material mixing channel 8 through the second material input channel 7. The first material and the second material are mutually independent in the incoming material direction, and flow to the reaction channel 2-1 after being converged in the material converging channel 8. So, be favorable to avoiding sneaking into the xenogenesis material in first material import pipe case 4 and the import pipe case 5 of second material, guarantee that the material is carried safely.
In the embodiment, the projection of the transition structure 9 on the adjacent heat tracing plate 3 deviates from the heat tracing channel 3-1, so as to ensure the blockage isolation between the second channel and the transition structure 9 and the heat tracing channel 3-1 and avoid the mixing of the material input by the second channel and the flow in the heat tracing channel 3-1.
In this embodiment, the transition structure 9 is a gradually expanding channel structure with one end connected to the second feeding channel 7 and the other end connected to the material combining channel 8. So, the first material of first feedstock channel 6 input gets into with the rectilinear direction and closes material passageway 8, and the second material of second feedstock channel 7 input gets into to close material passageway 8 with inserting the mode to one side, and first material and second material form the contained angle between the instantaneous velocity vector that gets into and close material passageway 8, have made things convenient for the primary mixing of two kinds of materials. In this embodiment, a step is formed at the connecting position of the first feeding channel 6 and the material combining channel 8, and in specific implementation, the step may adopt a right-angle structure, as shown in fig. 6, or a round-angle structure, as shown in fig. 7.
Referring to fig. 8, in a specific implementation, the transition structure 9 may also adopt a groove structure disposed perpendicular to the axis of the material mixing channel 8, an opening at the top of the transition structure 9 intersects with the material mixing channel 8, and the bottom of the transition structure is communicated with the second feeding channel 7. So, the first material of first feedstock channel 6 input gets into with the linear direction and closes material passageway 8, and the second material of second feedstock channel 7 input gets into with the mode of the first material input direction of perpendicular to and closes material passageway 8 to realize the mixture of two kinds of materials. And in this embodiment, the top opening of the transition structure 9 is located at the position where the first feeding channel 6 and the combining channel 8 are connected.
In the present embodiment, the shell 1 is further provided with a generation material outlet header 10, a heat-tracing side inlet header 12, and a heat-tracing side outlet header 11.
The generated material outlet pipe box 10 is communicated with the discharge ports of the reaction channels 2-1, and a generated material output connecting pipe 10-1 is arranged on the generated material outlet pipe box 10 so as to facilitate uniform output of the generated material output by the reaction channels 2-1.
The heat tracing side inlet pipe box 12 is communicated with the heat tracing inlets of the heat tracing channels 3-1, and a heat tracing stream input connecting pipe is arranged on the heat tracing side inlet pipe box 12. The heat tracing side outlet pipe box 11 is communicated with the heat tracing outlets of the heat tracing channels 3-1, and the heat tracing flow transmission and output connecting pipe 11-1 is arranged on the heat tracing side outlet pipe box 11.
Specifically, in the present embodiment, the end of the material input connection pipe 5-1, the end of the generated material output connection pipe 10-1, the end of the heat tracing flow input connection pipe 11-1, and the end of the heat tracing flow output connection pipe are provided with flanges for connecting external pipelines.
Referring to fig. 12, in the present embodiment, a reinforced mixing structure 13 is disposed between each reaction channel 2-1 and the corresponding feed inlet; the reinforced mixing structure 13 is composed of a plurality of mixing chambers connected in series on the same flow channel. The mixing cavity comprises a shell 13-1 and a baffle part 13-2, the shell 13-1 is provided with an inlet 13-3 and an outlet 13-4, the baffle part 13-2 is arranged inside the shell 13-1 and is positioned between the inlet 13-3 and the outlet 13-4, and a clearance channel for communicating the inlet 13-3 and the outlet 13-4 is formed between the baffle part 13-2 and the shell 13-1. The baffle 13-2 is a concave panel with the concavity facing the inlet 13-3. The baffle 13-2 has an area larger than the inlet 13-3 and the outlet 13-4.
Therefore, the materials input from the feeding port flow into the reaction channel 2-1 through the plurality of mixing cavities in the reinforced mixing structure 13, the materials collide with the baffle part 13-2 after entering the mixing cavities so as to be dispersed, and the dispersed materials flow out of the mixing cavities from the outlet after passing through the gap channels. The materials are further mixed in the process of collapsing and gathering through the outlet, thereby improving the mixing degree of the materials when entering the reaction channel 2-1 and improving the reaction efficiency in the reaction channel 2-1.
Specifically, in this embodiment, fig. 9(a), fig. 10(a), and fig. 11(a) show schematic diagrams of three different mixing chambers; fig. 9(b), fig. 10(b), fig. 11(b) show three corresponding reinforced hybrid structures.
Referring to fig. 9(a) and 9(b), a recess corresponding to the edge of the blocking portion 13-2 is formed on the inner wall of the housing 13-1, and the edge of the blocking portion 13-2 extends into the recess. Therefore, the inlet 13-3 is positioned between the plane of the edge of the baffle part 13-2 and the bottom of the baffle part 13-2, so that the material has a process of back flowing and bypassing along the baffle part 13-2 after colliding with the baffle part 13-2, and the material mixing efficiency is further improved.
Referring to fig. 9(a), fig. 10(a) and fig. 11(a), the clearance channel forms a tapered and divergent flow channel structure at the edge position of the baffle 13-2, that is, the diameter of the flow channel is gradually reduced in the process that the material enters the shell 13-1 along the concave flow channel of the baffle 13-2 to the edge of the baffle 13-2; the diameter of the flow channel is gradually increased in the process that the material flows from the edge of the baffle part 13-2 to the convex surface of the baffle part 13-2. So, the clearance passageway sets to the reducing runner for the material forms the vortex among the flow process, has further improved the material mixing effect. Similarly, in practice, the inlet 13-3 and/or the outlet 13-4 may be further configured as a variable diameter channel.
For example, in FIG. 9(a), the outlet 13-4 is a tapered pipe, i.e. the diameter of the middle of the outlet 13-4 is smaller than that of the two ends along the material flow direction; and a section of the clearance channel, which is positioned on one side of the convex surface of the baffle part 13-2 and is positioned between the edge of the baffle part 13-2 and the outlet 13-4, also adopts a tapered and gradually expanded flow channel structure.
Specifically, in the present embodiment, the edge of the stopper 13-2 has a pointed structure, that is, the cross section of the stopper 13-2 on the plane passing through the axis thereof has a crescent shape.
In the present embodiment, the reinforcing hybrid structure 13 is formed by etching on the reaction sheet 2.
The invention is not to be considered as limited to the specific embodiments shown and described, but is to be understood to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. An integrated countercurrent intensified microreactor is characterized by comprising a shell (1) and a core body; the core body is arranged in the shell (1), a plurality of layers of reaction units are stacked in the core body, and a layer of heat tracing unit is arranged between every two adjacent reaction units;
each layer of reaction unit consists of a plurality of reaction channels (2-1) which are arranged on the same plane in parallel, and the heat tracing units are provided with heat tracing channels (3-1) which correspond to the reaction channels (2-1) on the adjacent reaction units one by one; the corresponding reaction channel (2-1) and heat tracing channel (3-1) are collinear on the axes parallel to the planes of the reaction unit and the heat tracing unit;
a feed inlet and a discharge outlet are respectively arranged on the core body corresponding to each reaction channel (2-1), and two ends of each reaction channel (2-1) are respectively communicated with the corresponding feed inlet and discharge outlet; the core body is provided with a heat tracing inlet and a heat tracing outlet corresponding to each heat tracing channel (3-1), and the two ends of each heat tracing channel (3-1) are respectively communicated with the corresponding heat tracing inlet and the corresponding heat tracing outlet.
2. The integrated countercurrent enhanced microreactor of claim 1, wherein the inlet of each reaction channel (2-1) and the heat trace outlet of the corresponding heat trace channel (3-1) are located on the same side of the core; the discharge port of each reaction channel (2-1) and the heat tracing inlet of the corresponding heat tracing channel (3-1) are positioned on the same side of the core body.
3. The integrated countercurrent enhanced microreactor of claim 1, wherein the core is formed by stacking reaction sheets (2) and heat tracing plates (3) alternately, the reaction sheets (2) are provided with groove structures as reaction channels (2-1), and the heat tracing plates (3) are provided with groove structures as heat tracing channels (3-1).
4. The integrated countercurrent enhanced microreactor of claim 3, wherein the inner wall of the reaction channel (2-1) is of a wave-like structure or a zigzag structure.
5. The integrated countercurrent enhanced microreactor of claim 3, wherein the reaction channels (2-1) are in the shape of rectangular waves on the reaction sheet (2).
6. The integrated countercurrent enhanced microreactor according to claim 3, wherein the housing (1) is further provided with a first material inlet channel (4) and a second material inlet channel (5); a first material input connecting pipe (4-1) and a second material input connecting pipe (5-1) for inputting materials are respectively arranged on the first material inlet pipe box (4) and the second material inlet pipe box (5);
the upper surface and the lower surface of the inlet side of each reaction channel (2-1) corresponding to each reaction channel (2-2) on the reaction thin plate (2) are provided with corresponding feed channels which are respectively marked as a first feed channel (6) and a second feed channel (7); a material mixing channel (8) communicated with the corresponding feed inlet is also arranged on the reaction sheet (2) corresponding to each reaction channel (2-1); the diameter of the material combining channel (8) is larger than that of the first feeding channel (6) and that of the second feeding channel (7);
the first feeding channel (6) and the material combining channel (8) are positioned on the same surface of the reaction thin plate (2) and are connected with each other; one end of the first feeding channel (6) far away from the material mixing channel (8) is communicated with the first material inlet pipe box (4);
the reaction thin plate (2) is also provided with a transition structure (9) used for communicating the second feeding channel (7) with the material mixing channel (8), and one end, far away from the transition structure (9), of the second feeding channel (7) is communicated with the second material inlet pipe box (5).
7. The integrated countercurrent enhanced microreactor of claim 6, wherein the transition structure (9) is a divergent channel structure having one end connected to the second feeding channel (7) and the other end connected to the feeding channel (8).
8. The integrated countercurrent enhanced microreactor according to claim 6, wherein the transition structure (9) is a groove structure arranged perpendicular to the axis of the mixing channel (8), and the top opening of the groove structure is intersected with the mixing channel (8), and the bottom of the groove structure is communicated with the second feeding channel (7); and the top opening of the transition structure (9) is positioned at the connecting position of the first feeding channel (6) and the material mixing channel (8).
9. The integrated countercurrent enhanced microreactor according to claim 6, wherein the shell (1) is further provided with a generation-material outlet channel (10), a heat-tracing-side inlet channel (12) and a heat-tracing-side outlet channel (11);
the generated material outlet pipe box (10) is communicated with the discharge hole of each reaction channel (2-1), and a generated material output connecting pipe (10-1) is arranged on the generated material outlet pipe box (10);
a heat tracing stream input connecting pipe and a stream inlet corresponding to and communicated with the heat tracing inlets of the heat tracing channels (3-1) are arranged on the heat tracing side inlet pipe box (12); a heat tracing stream output connecting pipe (11-1) and a stream outlet which corresponds to and is communicated with the heat tracing outlet of each heat tracing channel (3-1) are arranged on the heat tracing side outlet pipe box (11).
10. The integrated countercurrent enhanced microreactor according to any of claims 1 to 9, wherein an enhanced mixing structure (13) is provided between each reaction channel (2-1) and the corresponding feed inlet; the reinforced mixing structure (13) consists of a plurality of mixing cavities which are connected in series on the same flow channel; the mixing cavity comprises a shell (13-1) and a baffle part (13-2), the shell (13-1) is provided with an inlet (13-3) and an outlet (13-4), the baffle part (13-2) is arranged inside the shell (13-1) and is positioned between the inlet (13-3) and the outlet (13-4), and a clearance channel for communicating the inlet (13-3) and the outlet (13-4) is formed between the baffle part (13-2) and the shell (13-1); the baffle part (13-2) is a concave panel, and the concave surface of the baffle part faces the inlet (13-3); the area of the baffle part (13-2) is larger than that of the inlet (13-3) and the outlet (13-4).
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| CN112403413B (en) | 2023-04-07 |
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