Anti-blocking micro-channel reactor

Abstract

The utility model provides an anti-blocking micro-channel reactor, relates to the technical field of micro-channel reactors, and solves the technical problem that the stability and the accuracy of the micro-channel reactor are easily influenced by adopting mechanical vibration ultrasound in the existing micro-channel reactor. The plate comprises a plate body, the plate body comprises a micro-channel plate serving as a reaction place and a sealing plate used for sealing the micro-channel plate, the micro-channel plate is provided with a plurality of groups of micro-channel grooves, and the adjacent micro-channel grooves are communicated through a filtering and pressurizing mechanism used for filtering solid impurities and pressurizing. According to the utility model, the filtering and pressurizing mechanism is used for filtering a small amount of solids generated by materials and pressurizing and discharging liquid materials into adjacent micro-channel grooves, so that micro-channels can be effectively prevented from being blocked.

Description

Technical Field

[0001] The utility model relates to the technical field of microchannel reactors, in particular to an anti-clogging microchannel reactor. Background Art

[0002] A microchannel reactor is a three-dimensional structural element that can be used for chemical reactions and is made of a solid matrix using special micromachining technology. Microchannel reactors usually have channels of smaller size and diverse shapes, in which fluids flow and the required reactions occur. Microstructured chemical equipment has a very large specific surface area, which can be hundreds or even thousands of times the specific surface area of ​​a stirred tank.

[0003] In a simple straight microchannel, the fluid is in a strict laminar flow state and the mixing is weak. In order to enhance the mixing of the fluid in the channel, most microchannel reactors usually set up some mixing structures in the channel, such as pipe bending, deformation, or built-in static mixing components, baffles, etc. These mixing structures can cut the fluid or generate local vortices when the fluid passes through, thereby enhancing the mixing of the fluid.

[0004] However, after the mixing structures are arranged, these mixing structures increase the pressure drop of the mixing system, and the large pressure drop is not conducive to enlarging the reactor volume by increasing the length of the pipeline, and the complex pipeline structure or filler further increases the risk of the pipeline being blocked by solids.

[0005] For example, a microchannel reactor with an anti-clogging structure proposed in the patent with publication number CN217068837U makes the microchannel less likely to be clogged by setting an anti-clogging structure including a resonant column, a resonant motor, an air pump and an air suction pump, thereby improving production efficiency. However, for the microchannel reactor, long-term ultrasonic or vibration thereof can effectively solve the clogging problem, but it may affect the stability and accuracy of the microchannel, and even affect its service life. Utility Model Content

[0006] The utility model aims to provide an anti-clogging microchannel reactor to solve the technical problem that the mechanical vibration ultrasound of the existing microchannel reactor easily affects the stability and accuracy of the microchannel reactor.

[0007] The embodiments of the present invention are implemented by the following technical solutions:

[0008] A blockage-proof microchannel reactor comprises a plate body, wherein the plate body comprises a microchannel plate as a reaction site and a sealing plate for sealing the microchannel plate, wherein the microchannel plate is provided with a plurality of groups of microchannel grooves, and adjacent microchannel grooves are connected through a filtering and pressurizing mechanism for filtering solid impurities and applying pressure.

[0009] Preferably, the filter pressurizing mechanism includes a piston cylinder and a filter layer, a one-way valve and a piston arranged in the piston cylinder, the filter layer and the piston are respectively arranged on the inlet side and the outlet side of the one-way valve, the piston cylinder is provided with an inlet pipe connected to the microchannel groove on the inlet side of the filter layer, and the piston cylinder is provided with an outlet pipe connected to the microchannel groove between the one-way valve and the piston.

[0010] Preferably, the piston is connected to a control rod, the control rod is connected to a connecting rod, and the connecting rod is transmission-connected to a power device.

[0011] Preferably, it also includes a front heat exchange plate and a rear heat exchange plate arranged on both sides of the sealing plate and the microchannel plate, and the front heat exchange plate and the rear heat exchange plate are provided with heat exchange channels for heating or cooling the microchannel plate.

[0012] Preferably, the sealing plate and the microchannel plate are provided with a medium inlet and a medium outlet communicating with the heat exchange channels.

[0013] Preferably, a baffle is provided in the heat exchange channel for blocking the heat exchange medium and extending the medium flow rate.

[0014] Preferably, the front heat exchange plate, the sealing plate and the microchannel plate are provided with a first inlet hole, a second inlet hole and an outlet hole connected to the microchannel groove.

[0015] Preferably, the microchannel plate is provided with a mixing chamber connecting the microchannel groove, the first inlet hole and the second inlet hole, and the mixing chamber is provided with a first spoiler block for disturbing the feed of the first inlet hole and a second spoiler block for disturbing the feed of the second inlet hole and collecting the feed of the first inlet hole; it also includes a feed cylinder connected to the second inlet hole, and the feed cylinder is provided with a diverter block for diverting the feed of the second inlet hole at the inverted cone outlet, and the feed cylinder and the diverter block are arranged through the second spoiler block.

[0016] Preferably, the microchannel groove is arranged in an S-shaped bend and is provided with a current collecting bin for dividing pressure and collecting current.

[0017] Preferably, the filter pressurizing mechanism further includes a suction block, the suction block is connected to the microchannel plate by bolts, and the front heat exchange plate, the sealing plate, the microchannel plate and the rear heat exchange plate are connected by bolts.

[0018] According to the technical solution, during assembly, the front heat exchange plate, the sealing plate, the microchannel plate and the rear heat exchange plate are aligned in sequence, so that the first inlet hole, the second inlet hole and the outlet hole overlap, and the sealing plate can be tightly fitted with the microchannel groove, and the heat exchange channel can also be tightly fitted with the back of the microchannel plate and the back of the sealing plate, and then they are fixed by bolts, and then the inlet pipe and the outlet pipe of the filter pressurizing mechanism in the suction block below are respectively connected to the adjacent microchannel grooves, and the suction block is fixed to the plate body by bolts, and then the external raw material pipe and the product pipe are respectively connected to the first inlet hole, the second inlet hole and the outlet hole of the plate body to complete the installation;

[0019] When the reaction is carried out, different reaction liquid raw materials are introduced into the first inlet hole and the second inlet hole respectively. Through the mixing bin, the material introduced into the first inlet hole is first diverted by the first spoiler block, and then collected at the second spoiler block. At the same time, the material introduced into the second inlet hole is also collected and diverted at the feed barrel and the second spoiler block, and mixed with the material introduced into the first inlet hole again. Under the action of mutual disturbance, the dispersion and mixing are more uniform, and the material enters the microchannel groove for reaction; at the same time, the heat exchange medium is introduced into the heat exchange channel through the medium inlet to exchange heat with the microchannel plate, and the heat exchange medium is discharged from the medium outlet after heat exchange; the material is in the microchannel groove, and a small amount of solid is filtered by the filtering and pressurizing mechanism, and the liquid material is pressurized and discharged into the adjacent microchannel groove, which can effectively prevent the microchannel from being blocked. The material can partially divide the pressure of the microchannel in the collecting bin and slow down the material flow rate. Then, when the material is discharged from the collecting bin, the caliber becomes smaller and the flow rate increases, which further prevents the material from being blocked.

[0020] The technical solution of the embodiment of the utility model has at least the following advantages and beneficial effects:

[0021] 1. The utility model uses a filtering and pressurizing mechanism to filter a small amount of solid materials and pressurize the liquid materials into adjacent microchannel grooves, which can effectively prevent the microchannel from being blocked;

[0022] 2. The arrangement of the mixing bin, the collecting bin and the microchannel groove of the utility model increases the material flow rate and further prevents material blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 A schematic diagram of the front structure of the anti-clogging microchannel reactor provided in Example 1 of the utility model;

[0025] Figure 2 A schematic structural diagram of a microchannel plate of an anti-clogging microchannel reactor provided in Example 1 of the utility model;

[0026] Figure 3 A schematic structural diagram of a sealing plate for an anti-clogging microchannel reactor provided in Example 1 of the utility model;

[0027] Figure 4 A schematic diagram of the side structure of an anti-clogging microchannel reactor provided in Example 2 of the utility model;

[0028] Figure 5 A schematic diagram of the structure of the front heat exchange plate of the anti-clogging microchannel reactor provided in Example 2 of the utility model;

[0029] Figure 6 A schematic diagram of the structure of the rear heat exchange plate of the anti-clogging microchannel reactor provided in Example 2 of the utility model;

[0030] Figure 7 A schematic diagram of the structure of the anti-clogging microchannel reactor filtration and pressurization mechanism provided in Example 3 of the utility model;

[0031] Figure 8 This is an enlarged structural schematic diagram of the anti-clogging microchannel reactor mixing bin provided in Example 3 of the utility model;

[0032] Icons: 1. Plate body; 11. Front heat exchange plate; 12. Sealing plate; 13. Microchannel plate; 131. Microchannel groove; 132. Collecting bin; 14. Rear heat exchange plate; 2. Suction block; 3. Outlet hole; 41. First inlet hole; 42. Second inlet hole; 43. Mixing chamber; 44. Second spoiler block; 45. Diverter block; 47. Feed barrel; 48. First spoiler block; 5. Heat exchange channel; 51. Baffle; 52. Medium inlet; 53. Medium outlet; 6. Power unit; 61. Connecting rod; 7. Filter pressurizing mechanism; 71. Inlet pipe; 72. Outlet pipe; 73. Filter layer; 74. One-way valve; 75. Piston; 76. Control rod; 77. Piston cylinder. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0036] In the description of the present invention, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the product of the application is usually placed when used. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0037] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] Example 1

[0039] A blockage-proof microchannel reactor comprises a plate body 1, wherein the plate body 1 comprises a microchannel plate 13 serving as a reaction site and a sealing plate 12 for sealing the microchannel plate 13, wherein the microchannel plate 13 is provided with a plurality of groups of microchannel grooves 131, and adjacent microchannel grooves 131 are connected via a filtering and pressurizing mechanism 7 for filtering solid impurities and applying pressure.

[0040] In this embodiment, the microchannel groove 131 is bent in an S shape, and is provided with a flow collecting bin 132 for dividing pressure and collecting flow.

[0041] Example 2

[0042] The only difference between this embodiment and Embodiment 1 is that, in this embodiment, a front heat exchange plate 11 and a rear heat exchange plate 14 are further provided on both sides of the sealing plate 12 and the microchannel plate 13, and the front heat exchange plate 11 and the rear heat exchange plate 14 are provided with heat exchange channels 5 for heating or cooling the microchannel plate 13.

[0043] In this embodiment, the sealing plate 12 and the microchannel plate 13 are provided with a medium inlet 52 and a medium outlet 53 communicating with the heat exchange channel 5 .

[0044] In this embodiment, a baffle 51 is provided in the heat exchange channel 5 for blocking the heat exchange medium and extending the medium flow.

[0045] In this embodiment, the front heat exchange plate 11 , the sealing plate 12 and the microchannel plate 13 are provided with a first inlet hole 41 , a second inlet hole 42 and an outlet hole 3 communicating with the microchannel groove 131 .

[0046] In this embodiment, a suction block 2 is further included to set the filtering pressurizing mechanism 7, and the suction block 2 is connected to the microchannel plate 13 by bolts, and the front heat exchange plate 11, the sealing plate 12, the microchannel plate 13 and the rear heat exchange plate 14 are connected by bolts.

[0047] Example 3

[0048] The only difference between this embodiment and embodiment 1 is that, in this embodiment, the filtering pressurizing mechanism 7 includes a piston cylinder 77 and a filter layer 73, a one-way valve 74 and a piston 75 arranged in the piston cylinder 77, the filter layer 73 and the piston 75 are arranged on the inlet side and the outlet side of the one-way valve 74 respectively, the piston cylinder 77 is provided with an inlet pipe 71 on the inlet side of the filter layer 73 to connect to the microchannel groove 131, and the piston cylinder 77 is provided with an outlet pipe 72 between the one-way valve 74 and the piston 75 to connect to the microchannel groove 131.

[0049] In this embodiment, the piston 75 is connected to a control rod 76 , the control rod 76 is connected to a connecting rod 61 , and the connecting rod 61 is transmission-connected to a power device 6 .

[0050] In this embodiment, the microchannel plate 13 is provided with a mixing chamber 43 connecting the microchannel groove 131, the first inlet hole 41 and the second inlet hole 42, and the mixing chamber 43 is provided with a first spoiler block 48 for disturbing the feeding of the first inlet hole 41 and a second spoiler block 44 for disturbing the feeding of the second inlet hole 42 and collecting the feeding of the first inlet hole 41; it also includes a feed barrel 47 connected to the second inlet hole 42, and the feed barrel 47 is provided with a diverter block 45 for diverting the feeding of the second inlet hole 42 at the inverted cone outlet, and the feed barrel 47 and the diverter block 45 are arranged through the second spoiler block 44.

[0051] Working principle and usage process:

[0052] During assembly, align the front heat exchange plate 11, the sealing plate 12, the microchannel plate 13 and the rear heat exchange plate 14 in sequence, so that the first inlet hole 41, the second inlet hole 42 and the outlet hole 3 overlap, and the sealing plate 12 can be tightly fitted with the microchannel groove 131, and the heat exchange channel can also be tightly fitted with the back of the microchannel plate 13 and the back of the sealing plate 12, and then install and fix them by bolts, and then the inlet pipe 71 and the outlet pipe 72 of the filter pressurizing mechanism 7 in the lower suction block 2 are respectively connected to the adjacent microchannel grooves 131, and the suction block 2 is fixed to the plate body 1 by bolts, and then the external raw material pipe and the product pipe are respectively connected to the first inlet hole 41, the second inlet hole 42 and the outlet hole 3 of the plate body 1 to complete the installation;

[0053] During the reaction, different reaction liquid raw materials are introduced into the first inlet hole 41 and the second inlet hole 42 respectively. Through the mixing bin, the material introduced into the first inlet hole 41 is first diverted by the first spoiler block 48, and then collected at the second spoiler block 44. At the same time, the material introduced into the second inlet hole 42 is also collected and diverted at the feed barrel 47 and the second spoiler block 44, and mixed again with the material introduced into the first inlet hole 41. Under the action of mutual disturbance, the dispersion and mixing are more uniform, and the material enters the microchannel groove 131 for reaction; at the same time, the heat exchange medium is introduced into the heat exchange channel 5 through the medium inlet 52 to exchange heat with the microchannel plate 13, and the heat exchange medium is discharged from the medium outlet 53 after heat exchange; the material is in the microchannel groove 131, and passes through the filtering and pressurizing mechanism 7 pairs, and a small amount of solid filtration is produced by the material, and the liquid material is pressurized and discharged into the adjacent microchannel groove 131.

[0054] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An anti-clogging microchannel reactor, comprising a plate body (1), characterized in that: The plate body (1) comprises a microchannel plate (13) serving as a reaction site and a sealing plate (12) for sealing the microchannel plate (13); the microchannel plate (13) is provided with a plurality of groups of microchannel grooves (131); adjacent microchannel grooves (131) are connected via a filtering and pressurizing mechanism (7) for filtering solid impurities and applying pressure.

2. The anti-clogging microchannel reactor according to claim 1, characterized in that: The filtering and pressurizing mechanism (7) comprises a piston cylinder (77) and a filtering layer (73), a one-way valve (74) and a piston (75) arranged in the piston cylinder (77); the filtering layer (73) and the piston (75) are arranged on the inlet side and the outlet side of the one-way valve (74) respectively; the piston cylinder (77) is provided with an inlet pipe (71) on the inlet side of the filtering layer (73) to communicate with the microchannel groove (131); and the piston cylinder (77) is provided with an outlet pipe (72) between the one-way valve (74) and the piston (75) to communicate with the microchannel groove (131).

3. The anti-clogging microchannel reactor according to claim 2, characterized in that: The piston (75) is connected to a control rod (76), the control rod (76) is connected to a connecting rod (61), and the connecting rod (61) is transmission-connected to a power device (6).

4. An anti-clogging microchannel reactor according to any one of claims 1 to 3, characterized in that: It also includes a front heat exchange plate (11) and a rear heat exchange plate (14) arranged on both sides of the sealing plate (12) and the microchannel plate (13), and the front heat exchange plate (11) and the rear heat exchange plate (14) are provided with heat exchange channels (5) for heating or cooling the microchannel plate (13).

5. The anti-clogging microchannel reactor according to claim 4, characterized in that: The sealing plate (12) and the microchannel plate (13) are provided with a medium inlet (52) and a medium outlet (53) which are connected to the heat exchange channel (5).

6. The anti-clogging microchannel reactor according to claim 5, characterized in that: The heat exchange channel (5) is provided with a baffle (51) for blocking the heat exchange medium and extending the flow of the medium.

7. An anti-clogging microchannel reactor according to claim 5 or 6, characterized in that: The front heat exchange plate (11), the sealing plate (12) and the microchannel plate (13) are provided with a first inlet hole (41), a second inlet hole (42) and an outlet hole (3) which are connected to the microchannel groove (131).

8. The anti-clogging microchannel reactor according to claim 7, characterized in that: The microchannel plate (13) is provided with a mixing chamber (43) which is connected with the microchannel groove (131), the first inlet hole (41) and the second inlet hole (42); the mixing chamber (43) is provided with a first spoiler block (48) for disturbing the feeding of the first inlet hole (41) and a second spoiler block (44) for disturbing the feeding of the second inlet hole (42) and collecting the feeding of the first inlet hole (41); and further comprises a feed cylinder (47) which is connected with the second inlet hole (42); the feed cylinder (47) is provided with a diverter block (45) for diverting the feeding of the second inlet hole (42) at the inverted cone outlet, and the feed cylinder (47) and the diverter block are arranged through the second spoiler block (44).

9. An anti-clogging microchannel reactor according to any one of claims 1-3, 5, 6 and 8, characterized in that: The microchannel groove (131) is arranged in an S-shaped bending configuration and is provided with a flow collecting bin (132) for dividing pressure and collecting flow.

10. An anti-clogging microchannel reactor according to any one of claims 5, 6 and 8, characterized in that: It also includes a suction block (2) on which the filtering and pressurizing mechanism (7) is arranged, the suction block (2) being connected to the microchannel plate (13) via bolts, and the front heat exchange plate (11), the sealing plate (12), the microchannel plate (13) and the rear heat exchange plate (14) being connected via bolts.

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