Micro-channel reaction substrate, micro-channel reaction assembly and micro-channel reactor

Abstract

The utility model discloses a microchannel reaction substrate, microchannel reaction subassembly and microchannel reactor, including: first reaction substrate and second reaction substrate, the first reaction substrate is provided with a plurality of first reaction channel, the second reaction substrate is provided with second reaction channel, the first reaction substrate and the second reaction substrate are laminated, the first reaction channel is provided with a plurality of first reaction channel, the second reaction channel is provided with a plurality of second reaction channel, and the second reaction channel is provided with a plurality of second reaction channel. And the plurality of first reaction channels are communicated through the second reaction channels. When the reaction medium flows into one first reaction channel on the first reaction substrate, the reaction medium flows through the second reaction channel on the second reaction substrate and then flows to the other first reaction channel adjacent to the second reaction channel on the first reaction substrate, so that the reaction medium is shunted and mixed in the space height direction; further, the mixing effect of the reaction medium is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of microchannel reactors, in particular to a microchannel reaction substrate, a microchannel reaction component and a microchannel reactor. Background Art

[0002] Microchemical technology is widely used in chemistry, chemical engineering, pharmaceuticals, energy, environment and other fields due to its superb heat and mass transfer capabilities.

[0003] In the design of microchannel reactors, a mainstream structure is to engrave various channel forms on one side of a flat plate, and engrave heat exchange channels on the back side of the flat plate. However, this structure is difficult to manufacture because the minimum thickness of the flat plate is limited by machining, which easily affects the normal operation of the microchannel reactor. In addition, the existing microchannel form usually achieves fluid mixing through plane levels, so the mixing effect of the reaction medium is poor. Utility Model Content

[0004] One object of the utility model is to provide a microchannel reaction substrate, which can realize diversion and mixing in the spatial height direction, improve the mixing effect of the reaction medium, and strengthen the reaction mass transfer; another object is to provide a microchannel reaction component including the above-mentioned microchannel reaction substrate; and another object is to provide a microchannel reactor including the above-mentioned microchannel reaction component.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A microchannel reaction substrate, comprising:

[0007] a first reaction substrate, wherein a plurality of first reaction channels are provided on the first reaction substrate;

[0008] A second reaction substrate is provided with a second reaction channel, the first reaction substrate and the second reaction substrate are stacked, and a plurality of the first reaction channels are connected through the second reaction channel.

[0009] Preferably, the first reaction substrate is further provided with at least one first reaction medium inlet and one first reaction medium outlet, and the first reaction medium inlet and the first reaction medium outlet are respectively connected to the first reaction channel; the second reaction substrate is further provided with at least one second reaction medium inlet and one second reaction medium outlet, and the second reaction medium inlet is connected to the first reaction medium inlet, and the second reaction medium outlet is connected to the first reaction medium outlet.

[0010] Preferably, the first reaction channel includes a plurality of first through grooves extending along a first direction, and the second reaction channel includes at least one second through groove extending along a second direction, and the first through grooves and the second through grooves are perpendicular to each other in space.

[0011] Preferably, the first reaction channel further includes a plurality of connecting grooves extending along the second direction, and one connecting groove is provided on the first reaction substrate every two first connecting grooves, and the connecting groove is connected with two adjacent first connecting grooves.

[0012] Preferably, two of the first through grooves and one of the connecting grooves constitute an I-shaped through groove, and the two sides of two adjacent I-shaped through grooves are connected by respectively one of the second through grooves; the first through groove located at the head position and the I-shaped through groove adjacent thereto are connected by the second through groove located at the head position; the first through groove located at the tail position and the I-shaped through groove adjacent thereto are connected by the second through groove located at the tail position.

[0013] Preferably, the first reaction substrate is provided with a plurality of columns of first reaction units, each column of the first reaction units includes a plurality of first through grooves arranged parallel to each other; the second reaction substrate is provided with a plurality of columns of second reaction units corresponding one to one to the first reaction units, the second reaction units include at least one column of array through grooves extending along the second direction, and the array through grooves include a plurality of second through grooves arranged at intervals.

[0014] A microchannel reaction component comprises any one of the microchannel reaction substrates described above.

[0015] Preferably, the microchannel reaction assembly comprises a first cover plate, a second cover plate, a heat exchange substrate and a partition, and the first cover plate, the second reaction substrate, the first reaction substrate, the second cover plate, the heat exchange substrate and the partition are stacked in sequence.

[0016] Preferably, a plurality of corrugated heat exchange channels are provided on the heat exchange substrate, and the plurality of corrugated heat exchange channels are connected end to end in sequence.

[0017] A microchannel reactor comprises any one of the microchannel reaction components described above.

[0018] Compared with the prior art, the above technical solution has the following advantages:

[0019] The utility model provides a microchannel reaction substrate, a microchannel reaction assembly and a microchannel reactor, comprising: a first reaction substrate and a second reaction substrate, wherein a plurality of first reaction channels are arranged on the first reaction substrate, a second reaction channel is arranged on the second reaction substrate, the first reaction substrate and the second reaction substrate are stacked, and the plurality of first reaction channels are connected through the second reaction channel. After the reaction medium flows into a first reaction channel on the first reaction substrate, it will flow through the second reaction channel on the second reaction substrate, and then flow to another first reaction channel on the first reaction substrate adjacent to the second reaction channel, thereby realizing the diversion and mixing of the reaction medium in the spatial height direction, thereby improving the mixing effect of the reaction medium. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0021] Figure 1 A schematic structural diagram of a microchannel reaction substrate provided by an embodiment of the utility model;

[0022] Figure 2 is a schematic structural diagram of a first reaction substrate;

[0023] Figure 3 is a schematic structural diagram of a second reaction substrate;

[0024] Figure 4 It is a schematic diagram of the structure of the first reaction channel and the second reaction channel;

[0025] Figure 5 A schematic diagram of the structure of a microchannel reaction assembly provided by an embodiment of the utility model;

[0026] Figure 6 for Figure 5 Schematic diagram of the local structure in;

[0027] Figure 7 for Figure 6 A schematic diagram of the structure of the heat exchange substrate;

[0028] Figure 8 A microchannel reaction assembly provided by an embodiment of the utility model includes a structural schematic diagram of multiple groups of microchannel reaction substrates.

[0029] The reference numerals are as follows:

[0030] 1 is a first reaction substrate, 11 is a first reaction unit, 110 is a first reaction channel, 111 is a first through groove, 112 is a connecting groove, 12 is a first reaction medium inlet, 121 is a first reaction medium A inlet, 122 is a first reaction medium B inlet, 13 is a first reaction medium outlet, 14 is a first heat exchange inlet, and 15 is a first heat exchange outlet;

[0031] 2 is a second reaction substrate, 21 is a second reaction unit, 22 is an array through groove, 23 is a second reaction channel, 231 is a second through groove, 24 is a second reaction medium A inlet, 25 is a second reaction medium B inlet, 26 is a second reaction medium outlet, 27 is a second heat exchange inlet, and 28 is a second heat exchange outlet;

[0032] 3 is a first cover plate;

[0033] 4 is a second cover plate;

[0034] 5 is a heat exchange substrate, 51 is a corrugated heat exchange channel, 52 is a heat exchange inlet, 53 is a heat exchange outlet, 54 is a reaction medium A inlet, 55 is a reaction medium B inlet, and 56 is a reaction medium outlet;

[0035] 6 is a partition. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] Please refer to Figure 1 to Figure 4 A microchannel reaction substrate provided by an embodiment of the utility model includes: a first reaction substrate 1 and a second reaction substrate 2, wherein a plurality of first reaction channels 110 are provided on the first reaction substrate 1, and a second reaction channel 23 is provided on the second reaction substrate 2, the first reaction substrate 1 and the second reaction substrate 2 are stacked, and the plurality of first reaction channels 110 are connected through the second reaction channel 23, that is, the first reaction channel 110 and the second reaction channel 23 form a three-dimensional channel, and the first reaction channel 110 and the second reaction channel 23 can be manufactured by precision processing methods such as 3D printing and laser processing. After the reaction medium flows into a first reaction channel 110 on the first reaction substrate 1, it will flow through the second reaction channel 23 on the second reaction substrate 2, and then flow to another first reaction channel 110 adjacent to the second reaction channel 23 on the first reaction substrate 1, thereby realizing the diversion and mixing of the reaction medium in the spatial height direction, thereby improving the mixing effect of the reaction medium.

[0038] In some embodiments, the first reaction substrate 1 is further provided with at least one first reaction medium inlet 12 and one first reaction medium outlet 13, and the first reaction medium inlet 12 and the first reaction medium outlet 13 are respectively connected to the first reaction channel 110. Figure 2 As shown, the first reaction substrate 1 is provided with two first reaction medium inlets 12, which are respectively denoted as a first reaction medium A inlet 121 and a first reaction medium B inlet 122. The first reaction medium A inlet 121 is used for the reaction medium A to enter the first reaction channel 110, and the first reaction medium B inlet 122 is used for the reaction medium B to enter the first reaction channel 110, wherein the reaction media A and B are two different reaction media; the second reaction substrate 2 is further provided with at least one second reaction medium inlet and one second reaction medium outlet 26, the second reaction medium inlet is communicated with the first reaction medium inlet 12, and the second reaction medium outlet 26 is communicated with the first reaction medium outlet 13, as shown in FIG. Figure 3 As shown, the second reaction substrate 2 is provided with two second reaction medium inlets, which are respectively denoted as the second reaction medium A inlet 24 and the second reaction medium B inlet 25. The second reaction medium A inlet 24 corresponds to the first reaction medium A inlet 121, and the second reaction medium B inlet 25 corresponds to the first reaction medium B inlet 122. The purpose of setting the second reaction medium inlet and the second reaction medium outlet 26 is to enable the reaction medium to flow through each microchannel reaction substrate when multiple microchannel reaction substrates are stacked in sequence.

[0039] In some embodiments, the first reaction channel 110 includes a plurality of first through grooves 111 extending along a first direction, and the second reaction channel 23 includes at least one second through groove 231 extending along a second direction. The first through grooves 111 and the second through grooves 231 are perpendicular to each other in space. Figure 2 As shown, the first reaction substrate 1 is provided with a first through groove 111 extending in the horizontal direction. Figure 3 As shown, the second reaction substrate 2 is provided with a second through groove 231 extending in the vertical reverse direction. Among them, the first reaction channel 110 also includes a plurality of connecting grooves 112 extending in the second direction. A connecting groove 112 is provided every two first through grooves 111 on the first reaction substrate 1, and the connecting groove 112 is connected with its two adjacent first through grooves 111. The connecting groove 112 can be provided in the middle position of the two first through grooves 111, that is, the two first through grooves 111 and the connecting groove 112 constitute an I-shaped through groove, and the two sides of the adjacent two I-shaped through grooves are connected through a second through groove 231 respectively. For details, please refer to Figure 4 As shown, in addition Figure 2As shown, the first through groove 111 located at the head position and the adjacent I-shaped through groove are connected through the second through groove 231 located at the head position; the first through groove 111 located at the tail position and the adjacent I-shaped through groove are connected through the second through groove 231 located at the tail position.

[0040] In some embodiments, Figure 2 As shown, a plurality of rows of first reaction units 11 are provided on the first reaction substrate 1, each row of the first reaction units 11 includes a plurality of first through grooves 111 arranged parallel to each other, and the plurality of rows of first reaction units 11 are sequentially connected end to end. In addition, a first heat exchange inlet 14 and a first heat exchange outlet 15 are also provided on the first reaction substrate 1; Figure 3 As shown, the second reaction substrate 2 is provided with a plurality of rows of second reaction units 21 corresponding one to one with the first reaction units 11, the second reaction units 21 include at least one row of array grooves 22 extending along the second direction, the array grooves 22 include a plurality of second grooves 231 arranged at intervals, and in addition, the second reaction substrate 2 is also provided with a second heat exchange inlet 27 and a second heat exchange outlet 28.

[0041] The present utility model also provides a microchannel reaction assembly, including the microchannel reaction substrate provided by any of the above embodiments. The microchannel reaction assembly includes a first cover plate 3, a second cover plate 4, a heat exchange substrate 5 and a partition plate 6, wherein the first cover plate 3, the second reaction substrate 2, the first reaction substrate 1, the second cover plate 4, the heat exchange substrate 5 and the partition plate 6 are stacked in sequence. Figure 5 He Ru Figure 8 As shown, the microchannel reaction components are stacked in sequence so that the reaction chamber and the heat exchange chamber can be alternately distributed, wherein the heat exchange side fluid and the reaction side fluid can realize thin layer design, and the thickness can reach 0.2mm, or even smaller. The heat exchange area of ​​this structure is large, and it can be arbitrarily enlarged in parallel, and the channel pressure drop is small. The diffusion welding structure design is adopted between each plate layer, and its pressure resistance is high, and the overall size is more compact, which is conducive to the industrialization of the product. Among them, the microchannel reaction components can adopt multiple groups in series or multiple groups in parallel. The parallel connection can realize the large flux working condition on the reaction side, and the pressure drop is small. The series connection can increase the residence time of the reaction medium. Specifically, according to the size of the reaction flux and the material residence time requirements, the microchannel reaction components can be connected in parallel or in series.

[0042] In some embodiments, Figure 6 and Figure 7As shown, the heat exchange substrate 5 is provided with a plurality of corrugated heat exchange channels 51, and the plurality of corrugated heat exchange channels 51 are connected end to end in sequence, wherein the heat exchange substrate 5 can be processed by laser cutting or the like, and the corrugated heat exchange head channel 51 is only a schematic structure, and the heat exchange can be locally enhanced by adding guide fins inside. In addition, the heat exchange substrate 5 is also provided with a heat exchange inlet 52 and a heat exchange outlet 53 connected to the corrugated heat exchange channel 51. In order to facilitate the reaction medium to pass through the heat exchange substrate 5, the heat exchange substrate 5 is also provided with a reaction medium A inlet 54, a reaction medium B inlet 55 and a reaction medium outlet 56. In addition, the first reaction substrate 1, the second reaction substrate 2, the partition 6, the first cover plate 3 and the second cover plate 4 are also provided with a reaction medium A inlet, a reaction medium B inlet, a reaction medium outlet, a heat exchange inlet and a heat exchange outlet. The first cover plate 3, the second cover plate 4 and the partition 6 can be selected as plates of the same structure. The outer sides of the first cover plate 3 and the second cover plate 4 are provided with corresponding interfaces, which can be connected by flanges, ferrules, etc., so as to be connected to the pipeline outside the equipment.

[0043] The embodiment of the utility model further provides a microchannel reactor, comprising the microchannel reaction component provided by any of the above embodiments. The beneficial effects of the microchannel reactor can be referred to the above microchannel reaction component, which will not be repeated here.

[0044] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0045] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0046] The microchannel reaction substrate, microchannel reaction assembly and microchannel reactor provided by the utility model are introduced in detail above. Specific examples are used in this article to illustrate the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A microchannel reaction substrate, characterized in that: include: A first reaction substrate (1), wherein a plurality of first reaction channels (110) are provided on the first reaction substrate (1); A second reaction substrate (2), wherein a second reaction channel (23) is provided on the second reaction substrate (2), the first reaction substrate (1) and the second reaction substrate (2) are stacked, and a plurality of the first reaction channels (110) are connected through the second reaction channel (23).

2. The microchannel reaction substrate according to claim 1, characterized in that: The first reaction substrate (1) is also provided with at least one first reaction medium inlet (12) and one first reaction medium outlet (13), and the first reaction medium inlet (12) and the first reaction medium outlet (13) are respectively connected to the first reaction channel (110); the second reaction substrate (2) is also provided with at least one second reaction medium inlet and one second reaction medium outlet (26), and the second reaction medium inlet is connected to the first reaction medium inlet (12), and the second reaction medium outlet (26) is connected to the first reaction medium outlet (13).

3. The microchannel reaction substrate according to claim 2, characterized in that: The first reaction channel (110) includes a plurality of first through grooves (111) extending along a first direction, and the second reaction channel (23) includes at least one second through groove (231) extending along a second direction, and the first through groove (111) and the second through groove (231) are perpendicular to each other in space.

4. The microchannel reaction substrate according to claim 3, characterized in that: The first reaction channel (110) further comprises a plurality of connecting grooves (112) extending along the second direction, wherein one connecting groove (112) is arranged every two first connecting grooves (111) on the first reaction substrate (1), and the connecting groove (112) is connected with two adjacent first connecting grooves (111).

5. The microchannel reaction substrate according to claim 4, characterized in that: Two of the first through grooves (111) and one of the connecting grooves (112) form an I-shaped through groove, and the two sides of two adjacent I-shaped through grooves are respectively connected through one of the second through grooves (231); the first through groove (111) located at the head position and the adjacent I-shaped through groove are connected through the second through groove (231) located at the head position; the first through groove (111) located at the tail position and the adjacent I-shaped through groove are connected through the second through groove (231) located at the tail position.

6. The microchannel reaction substrate according to claim 5, characterized in that: The first reaction substrate (1) is provided with a plurality of rows of first reaction units (11), each row of the first reaction units (11) comprising a plurality of first through grooves (111) arranged in parallel with each other; the second reaction substrate (2) is provided with a plurality of rows of second reaction units (21) corresponding one to one with the first reaction units (11), the second reaction units (21) comprising at least one row of array through grooves (22) extending along a second direction, the array through grooves (22) comprising a plurality of second through grooves (231) arranged at intervals.

7. A microchannel reaction assembly, characterized in that: A microchannel reaction substrate comprising any one of claims 1 to 6.

8. The microchannel reaction assembly according to claim 7, characterized in that: The microchannel reaction assembly comprises a first cover plate (3), a second cover plate (4), a heat exchange substrate (5) and a partition plate (6); the first cover plate (3), the second reaction substrate (2), the first reaction substrate (1), the second cover plate (4), the heat exchange substrate (5) and the partition plate (6) are stacked in sequence.

9. The microchannel reaction assembly according to claim 8, characterized in that: The heat exchange substrate (5) is provided with a plurality of corrugated heat exchange channels (51), and the plurality of corrugated heat exchange channels (51) are connected end to end in sequence.

10. A microchannel reactor, characterized in that: A microchannel reaction component comprising any one of claims 7 to 9.

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