Micro-channel reactor

Abstract

The utility model relates to the field of micro-channel equipment, and discloses a micro-channel reactor. The micro-channel reactor is provided with a shell part and a core part, the shell part is arranged on the periphery of the core part in a sealing and covering mode, at least one vacuum part is jointly constructed and formed between the shell part and the core part, all the vacuum parts are communicated and form a vacuum cavity, and the vacuum cavity is suitable for blocking heat transfer between the shell part and the core part. According to the utility model, the vacuum cavity is used for isolating heat transfer, so that the heat transfer between the shell part and the core part is greatly reduced, and the wall surface temperature is prevented from being greatly changed due to the operation of a product, so that the reaction process is accurately controlled to be carried out within the required reaction temperature. Specifically, the micro-channel reactor can be directly implemented in the manufacturing stage, for example, the whole is fixedly sealed in a brazing or diffusion welding mode of the structural sheet bars, so that the vacuum cavity is formed, the design and the manufacturing are simpler and more convenient, and the consistency control of the heat insulation effect is reliable.

Description

Technical Field

[0001] This utility model relates to the field of microchannel devices, specifically to a microchannel reactor. Background Technology

[0002] A microchannel reactor is a miniature reactor manufactured using microfabrication technology. Its channel size typically ranges from tens to hundreds of micrometers, exhibiting extremely high precision. Microchannel reactors offer advantages such as efficient heat and mass transfer, precise control of reaction conditions, high safety, and the ability to achieve continuous production, making them widely used in chemical, pharmaceutical, and energy industries.

[0003] Currently, traditional microchannel reactors often employ a large amount of external insulation material in their insulation design to achieve insulation. However, this type of design is difficult to manufacture, and it is challenging to control the consistency of the insulation effect. Consequently, the reaction process cannot be precisely controlled within the required reaction temperature. Utility Model Content

[0004] In view of this, the present invention provides a microchannel reactor, which is configured with a shell part and a core part. The shell part is sealed and covered on the outer periphery of the core part. At least one vacuum part is formed between the shell part and the core part. All vacuum parts are connected and form a vacuum cavity. The vacuum cavity is adapted to block heat transfer between the shell part and the core part.

[0005] The microchannel reactor provided by this invention utilizes a vacuum chamber to isolate heat transfer, significantly reducing heat transfer between the shell and core components. This ensures that the wall temperature does not change drastically due to temperature fluctuations during product operation, thereby allowing the reaction process to be precisely controlled within the required reaction temperature range. Specifically, the microchannel reactor can be implemented directly during the manufacturing stage, for example, by brazing or diffusion welding structural plates to fix and seal the entire structure, forming the vacuum chamber. This simplifies design and manufacturing, and ensures consistent and reliable control of the insulation effect.

[0006] In one optional embodiment, at least two connecting structures are provided between the shell portion and the core portion, and each of the connecting structures is configured with a first flow channel or a second flow channel. The first flow channel and the second flow channel are isolated from each other. The first flow channel is suitable for flowing reactant materials, and the second flow channel is suitable for flowing heat exchange medium.

[0007] The microchannel reactor provided by this utility model has a connecting structure between the shell part and the core part. The connecting structure can serve as the structural basis for the flow of reaction materials and heat exchange medium. Each connecting structure is equipped with a first flow channel or a second flow channel to flow reaction materials or heat exchange medium, so as to meet the flow requirements of reaction materials and the flow requirements of heat exchange medium for temperature control in the microchannel reactor.

[0008] In one optional embodiment, the microchannel reactor includes a cover plate assembly and a side plate assembly. The cover plate assembly includes an upper cover plate and a lower cover plate, which are spaced apart from each other. The side plate assembly includes an upper side plate and a lower side plate, which are spaced apart from each other and disposed between the upper cover plate and the lower cover plate. The upper cover plate and the upper side plate are sealed together, and the lower cover plate and the lower side plate are sealed together.

[0009] In one optional embodiment, the microchannel reactor further includes a heat exchange plate assembly disposed between the upper side plate and the lower side plate. The heat exchange plate assembly includes a first heat exchange plate and a second heat exchange plate, and each heat exchange plate is provided with a heat exchange hole and a heat exchange channel that are connected to each other. The heat exchange hole is connected to the second channel.

[0010] In one optional embodiment, the microchannel reactor further includes a reaction plate assembly disposed between the first heat exchange plate and the second heat exchange plate. The reaction plate assembly includes a first reaction plate, a second reaction plate, and a third reaction plate stacked together. The second reaction plate is provided with a material inlet channel and a material outlet channel communicating with the first flow channel. Each reaction plate is provided with a through hole for communicating with the second flow channel.

[0011] In one optional embodiment, the microchannel reactor further includes a first inlet and a first outlet, wherein the first inlet is connected to the material inlet channel and the first outlet is connected to the material outlet channel.

[0012] In one optional embodiment, the upper cover plate, lower cover plate, upper side plate, lower side plate, first heat exchange plate, second heat exchange plate, first reaction plate, second reaction plate and third reaction plate are each provided with an outer shell portion located on the outer periphery and a core portion located on the middle side, all the outer shell portions are configured to form the shell portion, and all the core portions are configured to form the core portion.

[0013] In one alternative embodiment, any cover plate is provided with a flange edge, the flange edge being disposed on the outer edge side of any cover plate facing the end face of the side plate assembly, the flange being in sealing contact with the side plate assembly;

[0014] The inner side of the flange edge and the wall surface of any cover plate facing the side plate assembly form a relief cavity. The upper side plate and the lower side plate are respectively hollowed out and configured with hollowed-out cavities. The relief cavity and the hollowed-out cavity are correspondingly connected.

[0015] In one optional embodiment, the lower cover plate is provided with a first connecting hole and a second connecting hole that are spaced apart from each other, and any one of the connecting holes is connected to the second flow channel;

[0016] The lower side plate is provided with two connecting holes, which are connected to the second flow channel.

[0017] In one optional embodiment, the microchannel reactor further includes a second inlet and a second outlet, the second inlet being connected to the second connecting hole and the second outlet being connected to the first connecting hole. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 A schematic diagram of the structure of the microchannel reactor provided by this utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the microchannel reactor provided by this utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the upper cover plate in the microchannel reactor provided by this utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the lower cover plate in the microchannel reactor provided by this utility model;

[0023] Figure 5 This is a schematic diagram of the upper side plate in the microchannel reactor provided by this utility model;

[0024] Figure 6 This is a schematic diagram of the structure of the lower side plate in the microchannel reactor provided by this utility model;

[0025] Figure 7 A schematic diagram of the structure of the first heat exchange plate in the microchannel reactor provided by this utility model;

[0026] Figure 8A schematic diagram of the structure of the second heat exchange plate in the microchannel reactor provided by this utility model;

[0027] Figure 9 This is a schematic diagram of the structure of the reaction plate assembly in the microchannel reactor provided by this utility model;

[0028] Figure 10 This is a schematic diagram of the structure of the first reaction plate in the microchannel reactor provided by this utility model;

[0029] Figure 11 A schematic diagram of the structure of the second reaction plate in the microchannel reactor provided by this utility model;

[0030] Figure 12 A schematic diagram of the structure of the third reaction plate in the microchannel reactor provided by this utility model;

[0031] Figure 13 A schematic diagram of the structure of the microchannel reactor provided by this utility model;

[0032] Explanation of reference numerals in the attached figures:

[0033] 101. Upper cover plate; 102. Lower cover plate; 103. Flange edge; 104. First connecting hole; 105. Second connecting hole;

[0034] 201. Upper side plate; 202. Lower side plate; 2021. Connecting hole;

[0035] 301. First heat exchange plate; 302. Second heat exchange plate; 303. Heat exchange hole; 304. Heat exchange flow channel;

[0036] 401. First reaction plate; 402. Second reaction plate; 403. Third reaction plate; 404. Material inlet channel; 405. Material outlet channel; 406. Through hole;

[0037] 500, Vacuum chamber; 501, First vacuum section; 502, Second vacuum section;

[0038] 600. Shell portion; 700. Core portion;

[0039] 801. First import; 802. First export; 803. Second import; 804. Second export. Detailed Implementation

[0040] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0041] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, or solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0042] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0043] The present invention aims to utilize the structure of an integral microchannel reactor to construct a vacuum layer between the outer shell and the core, thereby isolating heat transfer, greatly reducing heat transfer between the outer shell wall and the core, and ensuring that the wall temperature does not change significantly due to the temperature during product operation.

[0044] The following is combined Figures 1 to 13 The following describes embodiments of the present invention.

[0045] According to an embodiment of this utility model, a microchannel reactor is provided, see [link to embodiment]. Figure 2 The microchannel reactor is configured with a shell portion 600 and a core portion 700. The shell portion 600 is sealed around the core portion 700. At least one vacuum section is formed between the shell portion 600 and the core portion 700. All vacuum sections are connected and form a vacuum chamber 500. The vacuum chamber 500 is suitable for blocking heat transfer between the shell portion 600 and the core portion 700.

[0046] The microchannel reactor provided by this invention utilizes a vacuum chamber 500 to isolate heat transfer, significantly reducing heat transfer between the shell portion 600 and the core portion 700. This ensures that the wall temperature does not change drastically due to the product's operating temperature, thereby allowing the reaction process to be precisely controlled within the required reaction temperature range. Specifically, the microchannel reactor can be implemented directly during the manufacturing stage, for example, by brazing or diffusion welding structural plates to fix and seal the entire structure to form the vacuum chamber 500. This simplifies the design and manufacturing process and ensures consistent and reliable control of the insulation effect.

[0047] In one alternative implementation, see [link to implementation details]. Figure 2 At least two connecting structures are provided between the shell part 600 and the core part 700. Each connecting structure has a first flow channel or a second flow channel. The first flow channel and the second flow channel are isolated from each other. The first flow channel is suitable for the flow of reaction materials, and the second flow channel is suitable for the flow of heat exchange medium.

[0048] The microchannel reactor provided by this utility model has a connecting structure between the shell part 600 and the core part 700. The connecting structure can serve as the structural basis for the flow of reaction materials and heat exchange medium. Each connecting structure is equipped with a first flow channel or a second flow channel to flow reaction materials or heat exchange medium, so as to meet the flow requirements of reaction materials and the flow requirements of heat exchange medium for temperature control in the microchannel reactor.

[0049] In a specific implementation, four connection structures are provided, two for the flow of reactants and the other two for the flow of heat exchange media. Of course, the number of connection structures can be varied to meet the needs of media flow.

[0050] In a specific implementation, the microchannel reactor includes a cover plate assembly, a side plate assembly, a heat exchange plate assembly, and a reaction plate assembly, with all plates stacked in layers.

[0051] In one alternative implementation, see [link to implementation details]. Figure 1 , Figures 3 to 6 The cover plate assembly includes an upper cover plate 101 and a lower cover plate 102, which are spaced apart. The side plate assembly includes an upper side plate 201 and a lower side plate 202, which are spaced apart and positioned between the upper cover plate 101 and the lower cover plate 102. The upper cover plate 101 and the upper side plate 201 are sealed together, and the lower cover plate 102 and the lower side plate 202 are sealed together. The upper cover plate 101 is located at the top of the structure, and the upper side plate 201 is adjacent to it. The lower cover plate 102 is located at the bottom, and the lower side plate 202 is adjacent to it.

[0052] In a further implementation, see Figure 7 and Figure 8 A heat exchange plate assembly is disposed between the upper side plate 201 and the lower side plate 202. The heat exchange plate assembly includes a first heat exchange plate 301 and a second heat exchange plate 302. Each heat exchange plate is provided with a heat exchange hole 303 and a heat exchange channel 304 that are connected to each other. The heat exchange hole 303 and the second channel are connected. The first heat exchange plate 301 is disposed adjacent to the upper side plate 201, and the second heat exchange plate 302 is disposed adjacent to the lower side plate 202. The heat exchange channel 304 can be formed by chemical etching / laser cutting.

[0053] In one alternative implementation, see [link to implementation details]. Figures 9 to 12 The reaction plate assembly is disposed between the first heat exchange plate 301 and the second heat exchange plate 302. The reaction plate assembly includes a first reaction plate 401, a second reaction plate 402, and a third reaction plate 403 stacked together. The second reaction plate 402 is provided with a material inlet channel 404 and a material outlet channel 405 communicating with the first flow channel. Each reaction plate is provided with a through hole 406 for connecting to the second flow channel. The first reaction plate 401 is adjacent to the first heat exchange plate 301, and the third reaction plate 403 is adjacent to the second heat exchange plate 302. The reaction plate assembly consists of three layers of reaction plates, which are stacked to form a reversible flow channel, allowing the reactants to react fully within the flow channel of the reaction plate. This embodiment does not specifically limit the flow direction of the reactants in the reaction plate; the configuration is designed according to actual needs.

[0054] It should be noted that the heat exchange plate assembly also includes a partition (not shown in the figure). A partition is provided between the first heat exchange plate 301 and the first reaction plate 401, and another partition is provided between the second heat exchange plate 302 and the third reaction plate 403. The partition is used to separate the heat exchange side and the reaction side.

[0055] In a specific embodiment, the upper side plate 201, the lower side plate 202, the first heat exchange plate 301, the second heat exchange plate 302, the first reaction plate 401, the second reaction plate 402, and the third reaction plate 403 are all provided with an outer shell portion located on the outer periphery and a core portion located on the middle side. All the outer shell portions, the upper cover plate 101, and the lower cover plate 102 together form a shell portion 600, and all the core portions form a core portion 700.

[0056] For the connection structure, taking an example with four connection structures, see [link to example]. Figure 2Two of the connecting structures are located on the outer periphery of the core portion 700, and all the outer shell portions and all the core portions of the upper side plate 201, lower side plate 202, first heat exchange plate 301, second heat exchange plate 302, first reaction plate 401, second reaction plate 402 and third reaction plate 403 form these two connecting structures; the other two connecting structures are located on the bottom side of the core portion 700, and the connection between the lower side plate 202 and the lower cover plate 102 forms these two connecting structures.

[0057] In a specific implementation, for the microchannel reactor provided in this embodiment, after all the plates are stacked and assembled, a shell part 600 and a core part 700 are formed by brazing or diffusion welding. Correspondingly, a vacuum cavity 500 is formed by connecting all the above-mentioned vacuum parts. The vacuum cavity 500 is used to isolate heat transfer, reduce the amount of heat transferred to the structural wall surface by radiation, and avoid interference with the reaction process.

[0058] For a specific implementation method, see Figure 3 and Figure 4 Each cover plate is provided with a flange edge 103, which is located on the outer edge of the end face of the cover plate facing the side plate assembly. The flange is sealed to the side plate assembly. The inner side of the flange edge 103 and the wall surface of the cover plate facing the side plate assembly form a relief cavity. The relief cavity serves as the vacuum part of the vacuum chamber. An upper relief cavity is formed between the upper cover plate 101 and the upper side plate 201, and a lower relief cavity is formed between the lower cover plate 102 and the lower side plate 202.

[0059] For a specific implementation method, see Figures 3 to 12 The upper side plate 201 and lower side plate 202 are each hollowed out with a cavity, and the clearance cavity is connected to the hollowed-out cavity. Correspondingly, along the stacking direction, the first heat exchange plate 301, the second heat exchange plate 302, the first reaction plate 401, the second reaction plate 402, and the third reaction plate 403 are all hollowed out with cavities, and the hollowed-out cavities are connected to the clearance cavities. See also... Figures 5 to 13 The vacuum cavity 500 includes a first vacuum section 501 and a second vacuum section 502, as well as the aforementioned upper and lower clearance cavities. Along the stacking direction, all the hollowed-out cavities together form the first vacuum section 501 and the second vacuum section 502. (See also...) Figure 5 The second vacuum section 502 is disposed between two connecting structures located on the outer periphery of the core section 700, and the first vacuum section 501 is partially disposed around the outside of the core section 700.

[0060] In one alternative embodiment, the first vacuum section 501 can be configured as a U-shaped structure, and the second vacuum section 502 can be configured as a rectangular structure. This configuration helps to maximize the space of the vacuum cavity 500 and improve the overall thermal insulation capability of the structure. Of course, other shapes can also be used to achieve the same purpose of isolating heat transfer.

[0061] In one alternative implementation, see [link to implementation details]. Figure 4 The lower cover plate 102 is provided with a first connecting hole 104 and a second connecting hole 105 arranged at intervals, and any one of the connecting holes is connected to the second flow channel; the lower side plate 202 is provided with two connecting holes 2021, and the connecting holes 2021 are connected to the second flow channel.

[0062] In one alternative implementation, see [link to implementation details]. Figure 1 and Figure 13 The microchannel reactor also includes a first inlet 801 and a first outlet 802. The first inlet 801 is connected to the material inlet channel 404, and the first outlet 802 is connected to the material outlet channel 405. The first inlet 801 and the first outlet 802 can be respectively provided with pipe interfaces to receive the input material source and discharge the reacted material.

[0063] In one alternative implementation, see [link to implementation details]. Figure 1 The microchannel reactor also includes a second inlet 803 and a second outlet 804. The second inlet 803 is connected to the second connecting hole 105, and the second outlet 804 is connected to the first connecting hole 104. The second inlet 803 and the second outlet 804 may be respectively provided with pipe interfaces to receive the input heat exchange medium source and discharge the heat exchange medium.

[0064] The microchannel reactor provided by this invention can effectively isolate the temperature of the reactants from the wall surface during the reaction process, ensuring that the wall temperature of the reactor does not change significantly during operation. On the one hand, it protects the operator from being burned or frostbitten, and on the other hand, it ensures that the reactants carry out chemical reactions within the set temperature range.

[0065] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A microchannel reactor characterized by, It is configured with a shell part (600) and a core part (700). The shell part (600) is sealed on the outer periphery of the core part (700). At least one vacuum part is formed between the shell part (600) and the core part (700). All vacuum parts are connected and form a vacuum cavity (500). The vacuum cavity (500) is adapted to block heat transfer between the shell part (600) and the core part (700).

2. The microchannel reactor of claim 1 wherein, At least two connecting structures are provided between the shell part (600) and the core part (700), and a first flow channel or a second flow channel is constructed in any of the connecting structures. The first flow channel and the second flow channel are isolated from each other. The first flow channel is suitable for flowing reactant materials, and the second flow channel is suitable for flowing heat exchange medium.

3. The microchannel reactor of claim 2 wherein, The microchannel reactor includes a cover plate assembly and a side plate assembly. The cover plate assembly includes an upper cover plate (101) and a lower cover plate (102) spaced apart. The side plate assembly includes an upper side plate (201) and a lower side plate (202) spaced apart. The upper side plate (201) and the lower side plate (202) are disposed between the upper cover plate (101) and the lower cover plate (102). The upper cover plate (101) is sealed to the upper side plate (201), and the lower cover plate (102) is sealed to the lower side plate (202).

4. The microchannel reactor of claim 3 wherein, The microchannel reactor further includes a heat exchange plate assembly, which is disposed between the upper side plate (201) and the lower side plate (202). The heat exchange plate assembly includes a first heat exchange plate (301) and a second heat exchange plate (302). Each heat exchange plate is provided with a heat exchange hole (303) and a heat exchange channel (304) that are connected to each other. The heat exchange hole (303) is connected to the second channel.

5. The microchannel reactor of claim 4 wherein, The microchannel reactor further includes a reaction plate assembly disposed between the first heat exchange plate (301) and the second heat exchange plate (302). The reaction plate assembly includes a first reaction plate (401), a second reaction plate (402), and a third reaction plate (403) stacked together. The second reaction plate (402) is provided with a material inlet channel (404) and a material outlet channel (405) communicating with the first flow channel. Each reaction plate is provided with a through hole (406) for communicating with the second flow channel.

6. The microchannel reactor of claim 5 wherein, The microchannel reactor further includes a first inlet (801) and a first outlet (802), the first inlet (801) and the material inlet channel (404) being connected together, and the first outlet (802) and the material outlet channel (405) being connected together.

7. The microchannel reactor of claim 5 wherein, The upper cover plate (101), lower cover plate (102), upper side plate (201), lower side plate (202), first heat exchange plate (301), second heat exchange plate (302), first reaction plate (401), second reaction plate (402) and third reaction plate (403) are each provided with an outer shell portion located on the outer periphery and a core portion located on the middle side. All outer shell portions are configured to form the shell portion (600), and all core portions are configured to form the core portion (700).

8. The microchannel reactor of claim 3 wherein, Each cover plate is provided with a flange edge (103), the flange edge (103) is located on the outer edge side of the cover plate facing the end face of the side plate assembly, and the flange is sealed to the side plate assembly; The inner side of the flange edge (103) and the wall surface of any cover plate facing the side plate assembly form a relief cavity. The upper side plate (201) and the lower side plate (202) are respectively hollowed out and configured with hollowed-out cavities. The relief cavity and the hollowed-out cavity are correspondingly connected.

9. The microchannel reactor of claim 3 wherein, The lower cover plate (102) is provided with a first connecting hole (104) and a second connecting hole (105) arranged at intervals, and any one of the connecting holes is connected to the second flow channel; The lower side plate (202) is provided with two connecting holes (2021), which are connected to the second flow channel.

10. The microchannel reactor of claim 9 wherein, The microchannel reactor further includes a second inlet (803) and a second outlet (804), the second inlet (803) being connected to the second connecting hole (105), and the second outlet (804) being connected to the first connecting hole (104).

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