Micro-channel reaction block and micro-channel reactor
By using layer -sealing connection technology that does not require connecting pipelines in the micro -channel reactor, a micro -channel reaction block and reactor are designed to solve the restrictions of the size and complex reaction type applications in the existing technology, and the smaller size has been achieved, and a smaller size is achieved. , The effect of high generalability and strong heat exchange ability.
Patent Information
- Application Number
- CN202421097106.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-20
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-05-20
AI Technical Summary
Due to the limitation of the connection pipeline, existing microchannel reactors are difficult to achieve smaller sizes and more complex reaction types in the field of small trials.
Design a microcontroller block and micro -channel reactor that does not need to be used to connect pipelines. Through the layer -seal connection of the reactive plate and the heat exchanges, it forms a continuous reaction channel and heat exchange channel to achieve the flow of fluids and mixed. And heat exchange.
The smaller size, height, and stronger heat exchange capacity of the microcontroller reactor, reduce the cost, and improve the sealing effect and pressure resistance.
Smart Images
Figure CN222401423U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of microchannel reaction equipment, in particular to a microchannel reaction block and a microchannel reactor. Background Art
[0002] A microchannel reactor is a three-dimensional structure element in which fluids flow, mix, and complete a series of required reactions through channels. The channels are usually tiny (equivalent diameter less than 500 μm), diverse, and the fluids can easily reach the reaction conditions in the channels. Microchannel reactors have a very large surface area / volume ratio among microstructured chemical equipment. Compared with reactors, microchannel reactors have significant advantages, with a much larger specific surface area than reactors, and stronger mass transfer and heat transfer capabilities.
[0003] At present, microchannel reactors have been pursuing more reliable safety, lower cost and smaller size in the field of small-scale tests; however, the performance parameters of existing microchannel reactors are mainly restricted by the connecting pipelines between the plates. Because of the existence of the connecting pipelines, the spacing between the plates cannot be avoided, and the size of the reactor cannot be reduced, making it difficult to fully apply them in the field of small-scale tests with complex reaction types.
[0004] Therefore, developing and designing a microchannel reaction block and a microchannel reactor that do not require the use of connecting pipelines, have high versatility, and have good heat exchange effects is a problem that needs to be solved urgently at this stage. Utility Model Content
[0005] In order to solve the problems existing in the prior art, the utility model provides a microchannel reaction block and a microchannel reactor, in which the projection of the reaction inlet on the reaction plate along the first direction is located in the reaction channel of the heat exchange plate, and when multiple reaction block bodies are stacked and sealed and connected, a continuous reaction channel for fluid flow and mixing can be formed without the use of connecting pipelines; each reaction block body is provided with a heat exchange channel, which has an excellent heat exchange effect; each reaction block body has uniform specifications and high versatility, which can reduce costs and facilitate subsequent maintenance.
[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:
[0007] On one hand, the utility model provides a microchannel reaction block, comprising a reaction block body, wherein the reaction block body has a first surface and a second surface distributed along a first direction and arranged opposite to each other; the reaction block body is provided with two heat exchange medium ports connecting the first surface and the second surface;
[0008] The reaction block body is formed by stacking and sealing a heat exchange plate and a reaction plate; the first surface is located on the heat exchange plate, and the second surface is located on the reaction plate; a heat exchange flow channel is provided on the heat exchange plate, and both of the heat exchange medium ports are connected to the heat exchange flow channel; a drainage channel penetrating the heat exchange plate is provided on the first surface; a reaction flow channel is provided on the reaction plate, and a reaction inlet connected to the reaction flow channel is provided on the second surface, and the reaction flow channel is connected to the drainage channel;
[0009] The projection of the reaction inlet along the first direction is located in the drainage channel.
[0010] As a preferred technical solution, the reaction channel is opened on the joint surface of the reaction plate and the heat exchange plate, and the reaction plate and the heat exchange plate are sealed and connected to form a reaction chamber.
[0011] As a preferred technical solution, a reaction outlet is formed at the connection point between the reaction channel and the drainage channel; and on the reaction plate, the reaction inlet and the reaction outlet are separated from each other.
[0012] As a preferred technical solution, a temperature detection point is provided on the side edge of the reaction plate.
[0013] As a preferred technical solution, the first surface and the second surface are arranged in parallel;
[0014] And / or, the first surface and the second surface are the same in size.
[0015] In the second aspect, the utility model provides a microchannel reactor, comprising a plurality of the aforementioned microchannel reaction blocks, wherein the plurality of reaction block bodies are stacked in sequence and sealedly connected along the first direction; along the flow direction of the fluid, in two adjacent reaction block bodies, the drainage channel on the upstream reaction block body is connected to the reaction inlet on the downstream reaction block body; and at least two reaction inlets are provided on the reaction block body located most upstream.
[0016] As a preferred technical solution, along the flow direction of the fluid, a plurality of continuous reaction block bodies starting from the upstream are provided with flow holes, and the plurality of flow holes are connected in sequence to form an intermediate feed channel, and the end of the intermediate feed channel is connected to the reaction channel.
[0017] As a preferred technical solution, the intermediate feed channel is provided as one or more;
[0018] and / or, comprising a feed connector and / or a feed plug matching the reaction inlet;
[0019] and / or, comprising a heat exchange joint and / or a heat exchange plug matching the heat exchange medium port;
[0020] and / or, comprising a discharge joint and / or a discharge plug matching the drainage channel;
[0021] And / or, including an intermediate feed joint and / or an intermediate feed plug matching the flow hole.
[0022] As a preferred technical solution, the heat exchange plates and the reaction plates are alternately distributed along the first direction;
[0023] And / or, the number of the reaction block bodies is set to 2-8;
[0024] And / or, a sealing element is provided at the connection between the drainage channel and the reaction inlet;
[0025] And / or, two adjacent reaction block bodies are sealed and connected by bolt connection, diffusion welding or bonding;
[0026] And / or, the heat exchange channel is opened on the first surface, and two adjacent reaction block bodies are sealed and connected so that the heat exchange channel forms a heat exchange cavity; a cover plate is provided on the reaction block body located at the most downstream, and the cover plate covers the first surface to define the heat exchange cavity.
[0027] As a preferred technical solution, it comprises two pressing plates, and all the reaction block bodies are located between the two pressing plates; and a heat insulation plate is provided between the pressing plate and the reaction block body.
[0028] The beneficial effects of the utility model are as follows:
[0029] 1. The microchannel reaction block of the utility model is the core part and main component of the microchannel reactor. It has uniform specifications and high versatility, can significantly reduce the overall cost of the microchannel reactor, and also has the characteristics of cheap after-sales maintenance operation.
[0030] 2. The reaction inlet and the reaction outlet on the reaction plate of the utility model are separated from each other. The reaction outlet is connected to the drainage channel on the same reaction block body, and the drainage channel is connected to the reaction inlet on the downstream reaction block body. The drainage channels are connected in series without the need to use connecting pipelines, which eliminates the limitation of the microchannel reactor to the connecting pipeline. The connection of the drainage channel is more reliable, the structure is more compact, the overall pressure resistance of the reactor is higher, and the outer dimensions are smaller. Only one set of seals needs to be set between adjacent reaction block bodies, which reduces the possible leakage points by half, improves the sealing effect, and reduces the possibility of later maintenance of the equipment.
[0031] 3. The microchannel reactor of the utility model is composed of multiple microchannel reaction blocks stacked in the same direction. The heat exchange channel and the reaction channel are alternately distributed along the first direction on the microchannel reactor. The heat exchange distribution is uniform, the heat exchange capacity is strong, and the heat exchange effect is much higher than other types of equipment.
[0032] 4. The utility model forms an intermediate feed channel through the flow holes on the main bodies of multiple reaction blocks, which can realize the intermediate feeding of any microchannel reaction block. Before reaching the microchannel reaction block that needs to be fed, the intermediate feed channel only flows through other microchannel reaction blocks and is not connected to the reaction channels on other microchannel reaction blocks, which enhances the applicability of the microchannel reactor and can cover more test types, thereby reducing the user's investment cost to a certain extent.
[0033] 5. All feed joints, discharge joints, heat exchange joints and possible intermediate feed joints in the utility model are distributed at both ends of the microchannel reactor. Unused joints can be sealed with matching plugs; at the same time, the specifications of joints that realize the same type of functions are set to the same level, with strong interchangeability, clear layout, and easy connection. The microchannel reactor is simple and beautiful as a whole.
[0034] 6. A temperature measuring point can be added to each microchannel reaction block of the utility model, and the reaction conditions at each microchannel reaction block can be accurately fed back by reading the temperature indication.
[0035] 7. The heat exchange medium port of the utility model runs through the entire microchannel reactor, and the heat exchange channels on all the heat exchange plates are connected in parallel, thereby achieving uniformly distributed heat exchange, large heat exchange flux, and high heat exchange efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0036] Figure 1 This is a schematic diagram of the overall structure of an embodiment of a microchannel reaction block of the utility model;
[0037] Figure 2 for Figure 1 Front view of
[0038] Figure 3 for Figure 1 Rear view of
[0039] Figure 4 It is an exploded view of an embodiment of a microchannel reactor of the utility model.
[0040] Figure 5 For fluid Figure 4 Schematic diagram of the flow between multiple reaction blocks in the system.
[0041] In the figure: 1-reaction block body, 11-first surface, 12-second surface, 13-heat exchange medium port, 14-flow hole, 2-heat exchange plate, 21-heat exchange flow channel, 22-drainage channel, 3-reaction plate, 31-reaction flow channel, 32-reaction inlet, 33-reaction outlet, 34-temperature detection point, 4-pressing plate, 5-insulating plate. DETAILED DESCRIPTION
[0042] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.
[0043] First, please refer to Figure 1-Figure 3 , is an embodiment of a microchannel reaction block provided by the utility model, comprising a reaction block body 1, the reaction block body 1 having a first surface 11 and a second surface 12 distributed along a first direction and arranged oppositely; the reaction block body 1 is provided with two heat exchange medium ports 13 connecting the first surface 11 and the second surface 12; the reaction block body 1 is formed by stacking and sealing a heat exchange plate 2 and a reaction plate 3; the first surface 11 is located on the heat exchange plate 2, and the second surface 12 is located on the reaction plate 3; a heat exchange flow channel 21 is opened on the heat exchange plate 2, and the two heat exchange medium ports 13 are both connected to the heat exchange flow channel 21, and the heat exchange medium can enter the heat exchange flow channel 21 through the two heat exchange medium ports 13, and the heat exchange medium can The first surface 11 is provided with a drainage channel 22 which passes through the heat exchange plate 2; the reaction plate 3 is provided with a reaction channel 31, and the second surface 12 is provided with a reaction inlet 32 which is connected with the reaction channel 31. The reaction channel 31 is connected with the drainage channel 22, and the fluid enters the reaction channel 31 through the reaction inlet 32 and can flow out from the drainage channel 22; the projection of the reaction inlet 32 along the first direction is located in the drainage channel 22, and when multiple reaction block bodies 1 are stacked and sealed, the reaction inlet 32 on the downstream reaction block body 1 can be directly connected with the drainage channel 22 on the upstream reaction block body 1, so that the reaction channels 31 can be conveniently connected in series.
[0044] For clarification, please refer to Figure 1-Figure 3 The first surface 11 and the second surface 12 are preferably arranged in parallel, and the first surface 11 and the second surface 12 are also preferably set to the same size, which can conveniently realize the stacked and sealed connection of multiple reaction block bodies 1; in other embodiments, there can also be an angle between the first surface 11 and the second surface 12, or the sizes of the first surface 11 and the second surface 12 can be different, so that multiple reaction block bodies 1 can be stacked and sealed to realize the series connection of reaction channels 31 and the parallel connection of heat exchange channels 21.
[0045] For details, please refer to Figure 1-Figure 3 The heat exchange plate 2 and the reaction plate 3 are preferably set to the same size, and the heat exchange plate 2 and the reaction plate 3 are stacked and sealed by diffusion welding.
[0046] In this embodiment, please refer to Figure 1 and Figure 2 The reaction channel 31 is preferably opened on the joint surface of the reaction plate 3 and the heat exchange plate 2. After the reaction plate 3 and the heat exchange plate 2 are sealed and connected, the reaction channel 31 can form a reaction chamber, which is convenient for processing and assembly. In other embodiments, the reaction channel 31 can also be opened inside the reaction plate 3 to ensure smooth flow, mixing and reaction of the fluid in the reaction channel 31.
[0047] Furthermore, a reaction outlet 33 is formed at the connection between the reaction channel 31 and the drainage channel 22; on the reaction plate 3, the reaction inlet 32 and the reaction outlet 33 are respectively located at the two ends of the reaction channel 31 and are separated from each other, so that the reaction channel 31 can be conveniently processed on the joint surface of the reaction plate 3 and the heat exchange plate 2; accordingly, the drainage channel 22 is preferably set to a long strip shape, and the long strip drainage channel 22 can be conveniently connected to the reaction outlet 33 and the reaction inlet 32 respectively.
[0048] In this embodiment, please refer to Figure 1 A temperature detection point 34 is provided on the side edge of the reaction plate 3. The temperature detection point 34 is set as a temperature measuring hole opened at the side edge of the reaction plate 3. The temperature measuring hole is set close to the reaction channel 31. By placing a temperature sensor in the temperature measuring hole, the temperature of the fluid in the reaction channel 31 can be accurately measured.
[0049] Second, please refer to Figure 1-Figure 5 , is an embodiment of a microchannel reactor provided by the utility model, comprising a plurality of the aforementioned microchannel reaction blocks, a plurality of reaction block bodies 1 are sequentially stacked and sealed in a first direction, heat exchange plates 2 and reaction plates 3 are alternately distributed in the first direction, and have a high heat exchange efficiency; along the flow direction of the fluid, in two adjacent reaction block bodies 1, the drainage channel 22 on the upstream reaction block body 1 is connected to the reaction inlet 32 on the downstream reaction block body 1, and the reaction flow channel 31 is connected in series; at least two reaction inlets 32 are provided on the reaction block body 1 located at the most upstream, and different types of fluids can enter the reaction flow channel 31 through different reaction inlets 32 to achieve mixing and reaction.
[0050] Specifically, two adjacent reaction block bodies 1 can be sealed and connected by bolt connection, diffusion welding or bonding.
[0051] It should be noted that the number of reaction block bodies 1 can be designed according to actual needs, and is preferably set to 2-8; further, in order to ensure sealing, a sealing element is preferably provided at the connection between the drainage channel 22 and the reaction inlet 32.
[0052] Furthermore, Figure 5 The direction of the arrow in is the first direction, which is also the flow direction of the fluid between two adjacent reaction block bodies 1.
[0053] In this embodiment, please refer to Figure 1 , Figure 2 , Figure 3 and Figure 5 Along the flow direction of the fluid, a plurality of continuous reaction block bodies 1 starting from the most upstream are provided with flow holes 14, and the plurality of flow holes 14 are connected in sequence to form an intermediate feed channel, and the end of the intermediate feed channel is connected to the reaction channel 31, and the intermediate feed of any microchannel reaction block can be achieved by adjusting the end position of the intermediate feed channel; further, when the utility model requires multiple intermediate feed points, the intermediate feed channels can be correspondingly set as multiple independent ones.
[0054] It should be noted that the utility model should include a feed joint matching the reaction inlet 32, a heat exchange joint matching the heat exchange medium port 13, a discharge joint matching the drainage channel 22, and an intermediate feed joint matching the flow hole 14, so as to facilitate the transmission of fluid and heat exchange medium; further, the utility model should also include a feed plug matching the reaction inlet 32, a heat exchange plug matching the heat exchange medium port 13, a discharge plug matching the drainage channel 22, and an intermediate feed plug matching the flow hole 14. During use, if some interfaces do not need to be used, they can be sealed with corresponding plugs; further, the specifications of the joints that realize the same type of functions (fluid transmission, heat exchange medium transmission) are preferably set to be the same, with strong interchangeability, and are all arranged at both ends of the microchannel reactor for easy connection, making the microchannel reactor more concise and beautiful as a whole.
[0055] Specifically, the joint and the plug are preferably connected and fixed by means of threaded connection.
[0056] In this embodiment, please refer to Figure 1 , Figure 2 and Figure 5 The heat exchange channel 21 is opened on the first surface 11, and the two adjacent reaction block bodies 1 are sealed and connected to form a heat exchange cavity through the heat exchange channel 21, which is convenient for processing and assembly; further, a cover plate should be provided on the reaction block body 1 located at the most downstream, and the cover plate covers the first surface 11 to limit the heat exchange cavity, so as to ensure that the heat exchange cavity is sealed and connected in parallel with each other; in other embodiments, the heat exchange channel 21 can also be opened inside the heat exchange plate 2, so as to ensure that the heat exchange medium can flow smoothly in the heat exchange channel 21 to realize heat exchange.
[0057] In this embodiment, please refer to Figure 4The utility model also includes two pressing plates 4, and all the reaction block bodies 1 are located between the two pressing plates 4. The two pressing plates 4 clamp all the reaction block bodies 1 to ensure the sealing effect between the reaction block bodies 1; further, a heat insulation plate 5 is provided between the pressing plate 4 and the reaction block body 1 to prevent the temperature of the pressing plate 4 from affecting the mixing and reaction of the fluid in the reaction block body 1.
[0058] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A microchannel reaction block, characterized in that: The invention comprises a reaction block body (1), wherein the reaction block body (1) has a first surface (11) and a second surface (12) which are distributed along a first direction and are arranged opposite to each other; and the reaction block body (1) is provided with two heat exchange medium ports (13) which connect the first surface (11) and the second surface (12); The reaction block body (1) is formed by stacking and sealing a heat exchange plate (2) and a reaction plate (3); the first surface (11) is located on the heat exchange plate (2), and the second surface (12) is located on the reaction plate (3); a heat exchange channel (21) is provided on the heat exchange plate (2), and both of the two heat exchange medium ports (13) are connected to the heat exchange channel (21); a drainage channel (22) penetrating the heat exchange plate (2) is provided on the first surface (11); a reaction channel (31) is provided on the reaction plate (3), and a reaction inlet (32) connected to the reaction channel (31) is provided on the second surface (12), and the reaction channel (31) is connected to the drainage channel (22); The projection of the reaction inlet (32) along the first direction is located within the drainage channel (22).
2. A microchannel reaction block according to claim 1, characterized in that: The reaction channel (31) is opened on the joint surface of the reaction plate (3) and the heat exchange plate (2), and the reaction plate (3) and the heat exchange plate (2) are sealed and connected so that the reaction channel (31) forms a reaction chamber.
3. A microchannel reaction block according to claim 1, characterized in that: A reaction outlet (33) is formed at the connection point between the reaction flow channel (31) and the drainage channel (22); and on the reaction plate (3), the reaction inlet (32) and the reaction outlet (33) are separated from each other.
4. A microchannel reaction block according to claim 1, characterized in that: A temperature detection point (34) is provided on the side edge of the reaction plate (3).
5. A microchannel reaction block according to claim 1, characterized in that: The first surface (11) and the second surface (12) are arranged in parallel; And / or, the first surface (11) and the second surface (12) are of the same size.
6. A microchannel reactor, characterized in that: The invention comprises a plurality of microchannel reaction blocks as claimed in any one of claims 1 to 5, wherein the plurality of reaction block bodies (1) are stacked in sequence and sealedly connected along the first direction; along the flow direction of the fluid, in two adjacent reaction block bodies (1), the drainage channel (22) on the upstream reaction block body (1) is connected to the reaction inlet (32) on the downstream reaction block body (1); and at least two reaction inlets (32) are provided on the reaction block body (1) located most upstream.
7. A microchannel reactor according to claim 6, characterized in that: Along the flow direction of the fluid, a plurality of continuous reaction block bodies (1) starting from the most upstream are provided with flow holes (14), and the plurality of flow holes (14) are connected in sequence to form an intermediate feed channel, and the end of the intermediate feed channel is connected to the reaction channel (31).
8. A microchannel reactor according to claim 7, characterized in that: The intermediate feed channel is provided as one or more; and / or, comprising a feed connector and / or a feed plug matching the reaction inlet (32); and / or, comprising a heat exchange joint and / or a heat exchange plug matching the heat exchange medium port (13); and / or, comprising a discharge joint and / or a discharge plug matching the drainage channel (22); And / or, including an intermediate feed joint and / or an intermediate feed plug matching the flow hole (14).
9. A microchannel reactor according to claim 6, characterized in that: The heat exchange plates (2) and the reaction plates (3) are alternately distributed along the first direction; and / or, the number of the reaction block bodies (1) is set to 2-8; And / or, a sealing element is provided at the connection between the drainage channel (22) and the reaction inlet (32); and / or, two adjacent reaction block bodies (1) are sealed and connected by bolt connection, diffusion welding or bonding; And / or, the heat exchange channel (21) is opened on the first surface (11), and two adjacent reaction block bodies (1) are sealed and connected so that the heat exchange channel (21) forms a heat exchange cavity; and a cover plate is provided on the reaction block body (1) located at the most downstream, and the cover plate covers the first surface (11) to define the heat exchange cavity.
10. A microchannel reactor according to claim 6, characterized in that: It comprises two pressing plates (4), and all the reaction block bodies (1) are located between the two pressing plates (4); a heat insulation plate (5) is provided between the pressing plate (4) and the reaction block body (1).