Micro-channel reactor for chemical engineering and reaction method

Abstract

The invention discloses a micro-channel reactor for chemical engineering and a reaction method, and relates to the field of micro-channel reactors, the micro-channel reactor comprises a micro-channel reactor main machine, a plurality of groups of micro-channel reaction modules are arranged in the micro-channel reactor main machine, the number of each group of micro-channel reaction modules is two, and the micro-channel reaction modules are arranged in the micro-channel reactor main machine. A liquid inlet pipe and a liquid outlet pipe are arranged in the micro-channel reactor main machine, and the liquid inlet pipe is connected with an input pipe. It needs to be explained that in the embodiment of the invention, when one micro-channel reaction module is blocked, the liquid and the heat-conducting medium are integrally replaced into the other micro-channel reaction module, so that uninterrupted reaction is realized, and the reaction effect is ensured; besides, when the liquid enters the pretreatment box, the liquid is pre-filtered by a filter cover, so that the blockage of the micro-channel reaction module is further avoided, and when the filter cover is blocked, the filter cover can be automatically switched to realize continuous liquid feeding, so that the continuous operation of the equipment is further ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of microchannel reactors, and particularly relates to a microchannel reactor for chemical engineering and a reaction method. Background Art

[0002] A microchannel reactor is a continuous-flow chemical engineering device manufactured by microfabrication technology, with characteristic dimensions usually between 10 micrometers and 3 millimeters, and consists of micrometer-scale channels, a fluid distribution system, and a heat exchange device; in addition, the microchannel reactor utilizes the laminar flow or droplet state of the fluid in the microchannels to cut the reaction fluid through microstructures, enabling mixing, heat transfer, and reaction to be completed within the microscale time and space, and it is mainly applied to scenarios such as fine chemical synthesis, nanomaterial preparation, and highly exothermic reaction systems, and is considered a key technology for chemical process intensification.

[0003] In the prior art, microchannel reactors generally have a risk of blockage. Especially when involving solid-phase particles or high-viscosity materials, traditional solutions rely on treatment, pulse cleaning, or manual intervention, but they cannot achieve the self-repair function of continuous production. When the microchannel reactor is blocked, it can only be shut down for cleaning, unable to ensure the continuous progress of the reaction, thereby affecting the reaction effect and resulting in the reliability and production efficiency of the equipment not being guaranteed. Summary of the Invention

[0004] The purpose of the present invention is to provide a microchannel reactor for chemical engineering and a reaction method to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A microchannel reactor for chemical engineering, which includes a microchannel reactor main body. A plurality of groups of microchannel reaction modules are arranged in the microchannel reactor main body. The number of each group of microchannel reaction modules is two. An inlet pipe and an outlet pipe are arranged in the microchannel reactor main body. An input pipe is connected to the inlet pipe. A plurality of branch pipes are connected to both the inlet pipe and the outlet pipe, and the plurality of branch pipes are respectively connected to the plurality of groups of microchannel reaction modules. A heat exchange conduit is connected between two adjacent microchannel reaction modules;

[0007] Each group of microchannel reaction modules is equipped with an uninterrupted reaction mechanism, which is used to switch between the two microchannel reaction modules in the same group; the uninterrupted reaction mechanism includes two supply boxes, which are respectively installed on both sides of a group of microchannel reaction modules, and both sides of the supply box are connected to switching pipes, which are respectively connected to the two microchannel reaction modules, and the branch pipe is connected to the supply box; two transfer boxes are provided on one side of a group of microchannel reaction modules, and both transfer boxes are connected to the heat exchange pipe, and both sides of the transfer box are connected to connecting pipes, which are respectively connected to the two microchannel reaction modules;

[0008] A pretreatment box is connected between the liquid inlet pipe and the input pipe, and a continuous liquid inlet device is installed in the pretreatment box, and the continuous liquid inlet device is used to continuously feed the liquid into the liquid inlet pipe; the continuous liquid inlet device includes a conversion sleeve, which is rotatably installed in the pretreatment box, and multiple filter covers are inserted in the conversion sleeve, one of the filter covers corresponds to the liquid inlet pipe and filters the liquid entering the liquid inlet pipe.

[0009] Furthermore, in a preferred embodiment of the present invention, the uninterrupted reaction mechanism further includes two conductive racks having holes, both of which are located in the supply box, the holes on the two conductive racks being staggered, and two lifting racks being slidably installed in the supply box, the two lifting racks being respectively installed on the two conductive racks;

[0010] Two rotating lifting rods are rotatably mounted on an inner wall of one side of the supply box, and a lifting slide shaft is rotatably mounted on each of the two rotating lifting rods. The two lifting slide shafts are movably mounted in the two lifting frames respectively.

[0011] Furthermore, in a preferred embodiment of the present invention, an integrated bracket is movably mounted on the top side of the supply box, the integrated bracket is movably mounted on the two rotating lifting rods, and a support spring is connected between the supply box and the integrated bracket;

[0012] A connecting frame is movably installed in one of the supply boxes and the two transfer boxes. Two staggered holes are provided on the connecting frame. Synchronous frames are installed on the three connecting frames. The three synchronous frames are installed on the integrated bracket.

[0013] Furthermore, in a preferred embodiment of the present invention, a recovery box is installed in the supply box, a pressure plate is movably installed in the recovery box, and a return spring is connected between the recovery box and the pressure plate;

[0014] A rotating hole is provided on the inner wall of the top side of the supply box, a follower column is rotatably installed in the rotating hole, the pressure plate is installed on the follower column, and a stop plate is installed on the top of the follower column, and the stop plate is used to block the integrated bracket;

[0015] An arc-shaped driving groove is provided on the follower column, and a positioning block is installed on the inner wall of the rotating hole, and the positioning block extends into the arc-shaped driving groove.

[0016] Furthermore, in a preferred embodiment of the present invention, an installation box is installed on the pretreatment box, a socket is installed in the installation box, a floating frame is movably installed in the socket, and a reset spring for driving the floating frame to reset is connected between the floating frame and the socket;

[0017] A conversion column is rotatably installed in the pretreatment box, and the conversion sleeve is sleeved on the conversion column. A plurality of conversion rods are equidistantly installed on the conversion column in a ring. A toggle frame is installed on the bottom side of the upper floating frame. The upper floating frame moves upward and drives the conversion rods to rotate through the toggle frame, which is used to drive the conversion sleeve to rotate through the conversion column.

[0018] Furthermore, in a preferred embodiment of the present invention, a connecting seat is installed in the pre-treatment box, and the conversion column is rotatably installed on the connecting seat;

[0019] A plurality of card slots are formed in an annular and equidistant manner on the inner wall of the conversion column, and a plurality of card blocks are installed in an annular and equidistant manner on the connecting seat, and the plurality of card blocks are respectively clamped in the plurality of card slots.

[0020] Furthermore, in a preferred embodiment of the present invention, an active sealing mechanism is also included, and the active sealing mechanism is installed on the conversion sleeve, and the active sealing mechanism is used to seal and protect the multiple filter covers.

[0021] Furthermore, in a preferred embodiment of the present invention, the active sealing mechanism includes a plurality of sealing covers, a plurality of U-shaped frames are mounted on the conversion sleeve, and the plurality of sealing covers are rotatably mounted in the plurality of U-shaped frames respectively;

[0022] The closing cover is provided with an installation cavity, in which a connecting shaft is rotatably installed. The connecting shaft is installed on the U-shaped frame. A closed torsion spring is installed on the connecting shaft, and the other end of the closed torsion spring is installed on the inner wall of the installation cavity.

[0023] Furthermore, in a preferred embodiment of the present invention, a plurality of lifting frames are movably mounted in an annular and equidistant manner on the conversion sleeve, and the lifting frames are movable to open the closing cover, and a tension spring is connected between the lifting frames and the conversion sleeve;

[0024] An arc-shaped extrusion block is installed on the lifting frame, and an extrusion frame is installed in the pretreatment box. The lifting frame drives the arc-shaped extrusion block to contact the extrusion frame, so as to drive the lifting frame to move.

[0025] A microchannel reaction method for chemical industry, which is carried out according to the above-mentioned microchannel reactor for chemical industry, comprises the following steps:

[0026] S1. A microchannel reaction module is clogged, and the liquid pressure in the supply box continues to rise, driving the pressure plate upward and the follower column to move. The follower column moves in the rotating hole, and the follower column moves on the positioning block through the arc-shaped driving groove, thereby driving the follower column to rotate. The rotation of the follower column drives the stop plate to separate from the integrated bracket;

[0027] S2. The stop plate detaches from the integrated bracket, and the spring is expanded to drive the integrated bracket to move upward rapidly. The integrated bracket drives the two rotating lifting rods to rotate. The rotating lifting rods rotate and drive the lifting frame to move through the lifting slide shaft, so that the lifting frame drives the conducting frame to move. The two conducting frames close one switching tube and open the other switching tube. The integrated bracket drives the three connecting frames to move through the three synchronous frames, synchronously completing the switching of the branch pipes on the heat exchange pipe and the liquid outlet pipe, so that the liquid and heat transfer medium are completely replaced in another microchannel reaction module, and the reaction is carried out uninterruptedly;

[0028] S3. When the liquid enters the pretreatment box, it is pre-filtered by a filter cover. The filter cover becomes clogged, causing the liquid level in the pretreatment box to rise continuously. This forces the floating frame to float upward. The floating frame moves, driving the switching rod to rotate through the toggle frame. The switching rod drives the switching column to rotate, which drives the switching sleeve to rotate. The switching sleeve drives the clogged filter cover out of the liquid inlet pipe and drives the other filter cover to connect to the liquid inlet pipe, thereby continuously inputting liquid.

[0029] S4. The conversion sleeve drives the filter cover to rotate to the specified position, so that the lifting frame drives the arc-shaped extrusion block to contact the extrusion frame and be squeezed by the extrusion frame, so that the arc-shaped extrusion block drives the lifting frame to move in the opposite direction and drives the tension spring to contract. The lifting frame moves and pushes the closing cover, so that the closing cover rotates open and the filter cover is opened for use.

[0030] The beneficial effects of the microchannel reactor and reaction method for chemical industry proposed by the present invention are:

[0031] In the present invention, through the setting of the uninterrupted reaction mechanism, when one microchannel reaction module is blocked, the liquid pressure in the supply tank continuously rises, causing the bearing plate to move upward under force, the stop baffle to disengage from the integrated bracket, and then the integrated bracket to move upward rapidly, driving the rotation of two rotating lifting rods. The rotating lifting rods further drive the conduction frame to move. The two conduction frames close one switching pipe and open the other switching pipe. At the same time, the movement of the integrated bracket synchronously drives the movement of three synchronous frames, and further drives the movement of three connecting frames, enabling the synchronous switching of the branch pipes on the heat exchange conduit and the liquid outlet pipe. Thus, the liquid and the heat conduction medium are integrally replaced into another microchannel reaction module, realizing uninterrupted reaction, ensuring the reaction effect, breaking through the limitation of traditional passive anti-blocking, avoiding shutdown maintenance, significantly improving the continuous operation period of the equipment, reducing manual intervention and maintenance costs, extending the equipment life, and thus significantly enhancing the reliability and production efficiency of the equipment.

[0032] Furthermore, in the present invention, through the setting of the pretreatment tank and the continuous liquid supply device, when the liquid enters the pretreatment tank, a filter cover is used to pre-filter the liquid, further avoiding the blockage of the microchannel reaction module. And when the filter cover is blocked, the conversion column drives the conversion sleeve to rotate, causing the conversion sleeve to drive the blocked filter cover away from the liquid inlet pipe and drive another filter cover to communicate with the liquid inlet pipe, realizing continuous liquid supply and further ensuring that the equipment can operate continuously.

[0033] Even further, in the present invention, through the setting of the active closing mechanism, after one filter cover moves to a specified position, the lifting frame drives the arc-shaped extrusion block to contact the extrusion frame and be extruded by the extrusion frame, causing the arc-shaped extrusion block to drive the lifting frame to move in the opposite direction and drive the tension spring to contract. The movement of the lifting frame pushes the closing cover, causing the closing cover to rotate and open, thus opening the filter cover for use. And when the closing cover rotates, it rotates on the connecting shaft through the installation cavity and drives the closing torsion spring to be stressed. Therefore, when the filter cover is not in contact with the liquid inlet pipe or has disengaged from the liquid inlet pipe, under the resilience of the closing torsion spring, the closing cover closes the filter cover, avoiding the problems of the filter cover being blocked in advance or the impurities in the used filter cover contaminating the liquid in the reverse direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a three-dimensional structural schematic diagram of a microchannel reactor for chemical industry provided by an embodiment of the present invention;

[0035] Figure 2 It is an internal structural schematic diagram of a microchannel reactor for chemical industry provided by an embodiment of the present invention;

[0036] Figure 3 It is a structural schematic diagram of the connection between the microchannel reaction module and the uninterrupted reaction mechanism and other structures of a microchannel reactor for chemical industry provided by an embodiment of the present invention;

[0037] Figure 4 Partial structural schematic diagram of the microchannel reaction module of a microchannel reactor for chemical industry provided by an embodiment of the present invention connected to structures such as a supply tank;

[0038] Figure 5 Partial sectional structural schematic diagram of the lifting column and driving sleeve and other structures of a microchannel reactor for chemical industry provided by an embodiment of the present invention;

[0039] Figure 6 For a microchannel reactor for chemical industry provided by an embodiment of the present invention Figure 5 Schematic diagram of the structure of part A;

[0040] Figure 7 Schematic diagram of the structure of the follower column and stop baffle and other structures of a microchannel reactor for chemical industry provided by an embodiment of the present invention;

[0041] Figure 8 Partial structural schematic diagram of the connecting pipe and connecting frame and other structures of a microchannel reactor for chemical industry provided by an embodiment of the present invention;

[0042] Figure 9 Schematic diagram of the structure of the pretreatment tank and conversion sleeve and other structures of a microchannel reactor for chemical industry provided by an embodiment of the present invention;

[0043] Figure 10 Partial sectional structural schematic diagram of the pretreatment tank and conversion sleeve and other structures of a microchannel reactor for chemical industry provided by an embodiment of the present invention;

[0044] Figure 11 Partial sectional structural schematic diagram of the conversion column and connecting seat and other structures of a microchannel reactor for chemical industry provided by an embodiment of the present invention;

[0045] Figure 12 Schematic diagram of the structure of the conversion sleeve and filter cover of a microchannel reactor for chemical industry provided by an embodiment of the present invention;

[0046] Figure 13 Partial structural schematic diagram of the conversion sleeve and closing cover and other structures of a microchannel reactor for chemical industry provided by an embodiment of the present invention;

[0047] Figure 14 Partial sectional structural schematic diagram of the closing cover and U-shaped frame and other structures of a microchannel reactor for chemical industry provided by an embodiment of the present invention;

[0048] Figure 15A schematic diagram of the partial structure of a microchannel reactor for chemical use provided by an embodiment of the present invention, showing the connection between an arc-shaped extrusion block and an extrusion frame and other structures.

[0049] In the figure: 1-microchannel reactor host; 2-liquid inlet pipe; 3-microchannel reaction module; 4-branch pipe; 5-uninterrupted reaction mechanism; 501-supply box; 502-switching pipe; 503-conducting frame; 504-recovery box; 505-pressure plate; 506-follower column; 507-stop plate; 508-return spring; 509-integrated bracket; 510-opening spring; 511-rotating lifting rod; 512-lifting frame; 513-lifting slide shaft; 514-rotating hole; 515-arc-shaped driving groove; 516-positioning block; 517-synchronizing frame; 518-transfer box; 519-connecting pipe; 520-connecting frame; 6- Input pipe; 7-pretreatment box; 8-continuous liquid inlet device; 801-conversion sleeve; 802-filter cover; 803-installation box; 804-floating frame; 805-sleeve seat; 806-reset spring; 807-conversion column; 808-connecting seat; 809-card slot; 810-card block; 811-sliding frame; 812-conversion rod; 9-active closing mechanism; 901-closing cover; 902-U-shaped frame; 903-installation cavity; 904-connecting shaft; 905-closed torsion spring; 906-lifting frame; 907-tension spring; 908-arc-shaped extrusion block; 909-extrusion frame; 10-heat exchange conduit; 11-liquid outlet pipe. DETAILED DESCRIPTION

[0050] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0051] 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 invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0052] 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, it does not need to be further defined or explained in subsequent drawings.

[0053] In addition, in the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the inventive product is customarily placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the present invention. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and should not be construed as indicating or implying relative importance.

[0054] In addition, terms such as "horizontal", "vertical", "perpendicular", etc. do not mean that the component is required to be absolutely vertical, but can be slightly inclined. For example, "vertical" only means that its direction is more vertical relative to "horizontal", and does not mean that the structure must be completely vertical, but can be slightly inclined.

[0055] In the description of the present invention, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", "coupled" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] Please refer to the accompanying Figures 1 - 15 As shown in the figure, a microchannel reactor for chemical industry provided by an embodiment of the present invention includes a microchannel reactor main body 1. A plurality of groups of microchannel reaction modules 3 are arranged in the microchannel reactor main body 1. The number of each group of microchannel reaction modules 3 is two. A liquid inlet pipe 2 and a liquid outlet pipe 11 are arranged in the microchannel reactor main body 1. An input pipe 6 is connected to the liquid inlet pipe 2. A plurality of branch pipes 4 are connected to both the liquid inlet pipe 2 and the liquid outlet pipe 11. The plurality of branch pipes 4 are respectively connected to the plurality of groups of microchannel reaction modules 3. A heat exchange conduit 10 is connected between two adjacent microchannel reaction modules 3.

[0057] Furthermore, please refer to the accompanying Figures 3 - 8, a microchannel reactor for chemical industry provided by an embodiment of the present invention. An uninterrupted reaction mechanism 5 is installed on each group of microchannel reaction modules 3. The uninterrupted reaction mechanism 5 is used to switch between two microchannel reaction modules 3 in the same group. The uninterrupted reaction mechanism 5 includes two supply tanks 501, which are respectively installed on both sides of a group of microchannel reaction modules 3. Switching pipes 502 are connected to both sides of the supply tank 501, and the two switching pipes 502 are respectively connected to the two microchannel reaction modules 3. A branch pipe 4 is connected to the supply tank 501. Two transfer tanks 518 are provided on one side of a group of microchannel reaction modules 3. Heat exchange conduits 10 are connected to both of the two transfer tanks 518. Connecting pipes 519 are connected to both sides of the transfer tank 518, and the two connecting pipes 519 are respectively connected to the two microchannel reaction modules 3. It should be noted that in the embodiment of the present invention, when one microchannel reaction module 3 is blocked, the liquid pressure in the supply tank 501 continuously rises, so that the two conduction frames 503 move synchronously. At this time, the two conduction frames 503 block one switching pipe 502 and open the other switching pipe 502. At the same time, the integrated bracket 509 moves and synchronously drives the three synchronous brackets 517 to move, thereby driving the three connecting brackets 520 to move, and then synchronously completing the switching of the branch pipes 4 on the heat exchange conduit 10 and the liquid outlet pipe 11, so that the liquid and the heat conduction medium are integrally replaced into another microchannel reaction module 3, realizing uninterrupted reaction, ensuring the reaction effect, breaking through the limitation of traditional passive anti-blocking, avoiding shutdown maintenance, significantly improving the continuous operation cycle of the equipment, reducing manual intervention and maintenance costs, extending the equipment life, and thus significantly improving the reliability and production efficiency of the equipment.

[0058] Further specifically, in the embodiment of the present invention, a pretreatment tank 7 is connected between the liquid inlet pipe 2 and the input pipe 6. A continuous liquid feeding device 8 is installed in the pretreatment tank 7. The continuous liquid feeding device 8 is used to continuously feed liquid into the liquid inlet pipe 2. The continuous liquid feeding device 8 includes a conversion sleeve 801, which is rotatably installed in the pretreatment tank 7. A plurality of filter covers 802 are inserted into the conversion sleeve 801. One filter cover 802 corresponds to the liquid inlet pipe 2 and filters the liquid entering the liquid inlet pipe 2. It should be noted that in the embodiment of the present invention, when the liquid enters the pretreatment tank 7, the liquid is pre-filtered by one filter cover 802 to avoid blocking the microchannel reaction module 3. And when the filter cover 802 is blocked, the conversion sleeve 801 rotates to make the blocked filter cover 802 separate from the liquid inlet pipe 2 and drive another filter cover 802 to communicate with the liquid inlet pipe 2, realizing continuous liquid feeding.

[0059] Please continue to refer to the instruction manual appendix Figures 3 - 8, Further, in a microchannel reactor for chemical industry provided by an embodiment of the present invention, the uninterrupted reaction mechanism 5 further includes two conduction frames 503 with holes. Both of the two conduction frames 503 are located in the supply tank 501, and the holes on the two conduction frames 503 are arranged in a staggered manner. Two lifting frames 512 are slidably installed in the supply tank 501, and the two lifting frames 512 are respectively installed on the two conduction frames 503;

[0060] In addition, two rotating lifting rods 511 are rotatably installed on one inner wall of the supply tank 501. Lifting sliding shafts 513 are rotatably installed on the two rotating lifting rods 511, and the two lifting sliding shafts 513 are respectively movably installed in the two lifting frames 512. It should be noted that in the embodiment of the present invention, when the integrated support 509 moves upward, the two rotating lifting rods 511 are synchronously driven to rotate. The rotation of the rotating lifting rod 511 drives the lifting frame 512 to move through the lifting sliding shaft 513, so that the lifting frame 512 drives the conduction frame 503 to move, and further enables the two conduction frames 503 to move synchronously.

[0061] More specifically, in the embodiment of the present invention, an integrated support 509 is movably installed on the top side of the supply tank 501. The integrated support 509 is movably installed on the two rotating lifting rods 511, and a spreading spring 510 is connected between the supply tank 501 and the integrated support 509;

[0062] In addition, a communication frame 520 is movably installed in one supply tank 501 and the two transfer tanks 518. Two staggered holes are formed in the communication frame 520, and a synchronous frame 517 is installed on each of the three communication frames 520. The three synchronous frames 517 are all installed on the integrated support 509. It should be noted that in the embodiment of the present invention, when the microchannel reaction module 3 is blocked, the integrated support 509 is released from the restriction and quickly moves upward, driving the two rotating lifting rods 511 to rotate. The rotating lifting rod 511 drives the conduction frame 503 to move through the lifting frame 512, so that the two conduction frames 503 move synchronously. Since the holes on the two conduction frames 503 are arranged in a staggered manner, at this time, the two conduction frames 503 close one switching tube 502 and open the other switching tube 502. At the same time, the movement of the integrated support 509 synchronously drives the three synchronous frames 517 to move, then drives the three communication frames 520 to move, and further synchronously completes the switching of the branch pipes 4 on the heat exchange conduit 10 and the liquid outlet pipe 11, so that the liquid and the heat conduction medium are integrally replaced into another microchannel reaction module 3, realizing an uninterrupted reaction.

[0063] Please continue to refer to the specification appendix Figures 3 - 8More specifically, in the embodiment of the present invention, a recovery box 504 is installed in the supply box 501, a pressure plate 505 is movably installed in the recovery box 504, and a return spring 508 is connected between the recovery box 504 and the pressure plate 505; in addition, a rotation hole 514 is opened on the inner wall of the top side of the supply box 501, a follower column 506 is rotatably installed in the rotation hole 514, the pressure plate 505 is installed on the follower column 506, and a stop plate 507 is installed on the top of the follower column 506, and the stop plate 507 is used to block the integrated bracket 509;

[0064] In addition, an arc-shaped driving groove 515 is formed on the follower column 506, and a positioning block 516 is installed on the inner wall of the rotating hole 514, and the positioning block 516 extends into the arc-shaped driving groove 515. It should be noted that in the embodiment of the present invention, when a microchannel reaction module 3 is blocked, the liquid pressure in the supply box 501 continuously increases, causing the pressure plate 505 to move upward under force, and driving the follower column 506 to move, while driving the return spring 508 to contract under force, causing the follower column 506 to move in the rotating hole 514, thereby causing the follower column 506 to move on the positioning block 516 through the arc-shaped driving groove 515, and then driving the follower column 506 to rotate. The rotation of the follower column 506 drives the stop plate 507 to separate from the integrated bracket 509, thereby achieving the purpose of automatic rotation of the stop plate 507.

[0065] For further information, please refer to the attached manual. Figures 9 - 12 In a microchannel reactor for chemical use provided by an embodiment of the present invention, a mounting box 803 is mounted on a pretreatment box 7, a socket 805 is mounted in the mounting box 803, a floating frame 804 is movably mounted in the socket 805, and a return spring 806 for driving the floating frame 804 to return to its original position is connected between the floating frame 804 and the socket 805;

[0066] In addition, a conversion column 807 is rotatably installed in the pretreatment box 7, and the conversion sleeve 801 is sleeved on the conversion column 807. A plurality of conversion rods 812 are equidistantly installed in a ring on the conversion column 807. A toggle frame 811 is installed on the bottom side of the upper floating frame 804. The upper floating frame 804 moves upward and drives the conversion rod 812 to rotate through the toggle frame 811, which is used to drive the conversion sleeve 801 to rotate through the conversion column 807. It should be noted that, in the embodiment of the present invention, when the filter cover 802 is blocked during continuous use, so that the liquid in the pretreatment box 7 cannot flow out, the liquid level in the pretreatment box 7 keeps rising. At this time, the floating frame 804 is forced to float up and moves in the socket 805, while squeezing the reset spring 806. The floating frame 804 moves and drives the conversion rod 812 to rotate through the toggle frame 811. The conversion rod 812 drives the conversion column 807 to rotate. The conversion column 807 drives the conversion sleeve 801 to rotate, so that the conversion sleeve 801 drives the blocked filter cover 802 to disengage from the liquid inlet pipe 2, and drives the other filter cover 802 to connect with the liquid inlet pipe 2, thereby realizing continuous liquid inflow.

[0067] More specifically, in the embodiment of the present invention, a connecting seat 808 is installed in the pretreatment tank 7, and the conversion column 807 is rotatably installed on the connecting seat 808; a plurality of card slots 809 are annularly and equidistantly formed on the inner wall of the conversion column 807, and a plurality of clamping blocks 810 are annularly and equidistantly installed on the connecting seat 808, and the plurality of clamping blocks 810 are respectively clamped in the plurality of card slots 809. It should be noted that in the embodiment of the present invention, when the conversion column 807 rotates, it rotates on the connecting seat 808, and at the same time, the rotation of the conversion column 807 causes the plurality of card slots 809 to disengage from the plurality of clamping blocks 810. After the conversion column 807 rotates to a specified position, the plurality of clamping blocks 810 are clamped in the plurality of card slots 809 to realize the positioning of the conversion column 807, so that the filter cover 802 at the corresponding position can stably filter.

[0068] Further, please refer to the attached drawings of the specification Figure 9 and Figures 12 - 15 , a microchannel reactor for chemical industry provided by the embodiment of the present invention further includes an active closing mechanism 9, and the active closing mechanism 9 is installed on the conversion sleeve 801, and the active closing mechanism 9 is used for closing and protecting the plurality of filter covers 802. It should be noted that in the embodiment of the present invention, through the setting of the active closing mechanism 9, when other filter covers 802 are used or unused, the plurality of filter covers 802 are closed and protected to avoid the unused filter covers 802 from being contaminated, or the impurities in the used filter covers 802 entering the liquid in the reverse direction, causing the problem of reverse contamination.

[0069] More specifically, in the embodiment of the present invention, the active closing mechanism 9 includes a plurality of closing covers �01, a plurality of U-shaped frames 902 are installed on the conversion sleeve 801, and the plurality of closing covers 901 are respectively rotatably installed in the plurality of U-shaped frames 902; in addition, an installation cavity 903 is formed on the closing cover 901, a connecting shaft 904 is rotatably installed in the installation cavity 903, the connecting shaft 904 is installed on the U-shaped frame 902, and a closing torsion spring 905 is installed on the connecting shaft 904, and the other end of the closing torsion spring 905 is installed on the inner wall of the installation cavity 903. It should be noted that in the embodiment of the present invention, when the conversion sleeve 801 rotates to drive a closing cover 901 to move within the range of the liquid inlet pipe 2, the arc-shaped pressing block 908 at the corresponding position is pressed by the pressing frame 909, thereby driving the lifting frame 906 to move and push the closing cover 901, so that the closing cover 901 rotates and opens, facilitating the opening and use of the filter cover 802. When the closing cover 901 rotates, it rotates on the connecting shaft 904 through the installation cavity 903 and drives the closing torsion spring 905 to be stressed. Therefore, when the filter cover 802 is separated from or not in contact with the liquid inlet pipe 2, under the torsional force of the closing torsion spring 905, the closing cover 901 closes the filter cover 802 to avoid the filter cover 802 from being blocked in advance or the impurities from contaminating the liquid in the reverse direction.

[0070] Please continue to refer to the attached drawings of the specification Figure 9 and Figures 12 - 15 Specifically, in the embodiment of the present invention, a plurality of lifting frames 906 are movably installed at equal intervals in a ring shape on the conversion sleeve 801. The lifting frames 906 are moved to push open the closing cover 901. A tension spring 907 is connected between the lifting frames 906 and the conversion sleeve 801;

[0071] An arc-shaped extrusion block 908 is installed on the lifting frame 906, and an extrusion frame 909 is installed in the pretreatment tank 7. The lifting frame 906 drives the arc-shaped extrusion block 908 to contact the extrusion frame 909, which is used to drive the lifting frame 906 to move. It should be noted that in the embodiment of the present invention, when the conversion sleeve 801 rotates, it drives a plurality of filter covers 802 to rotate, so that the lifting frame 906 drives the arc-shaped extrusion block 908 to contact the extrusion frame 909 and is extruded by the extrusion frame 909, so that the arc-shaped extrusion block 908 drives the lifting frame 906 to move in the reverse direction and drives the tension spring 907 to contract. The lifting frame 906 moves to push the closing cover 901, so that the closing cover 901 rotates and opens, and then the filter cover 802 is opened for use; when the conversion sleeve 801 continues to rotate, under the pulling force of the tension spring 907, it can help the lifting frame 906 to reset.

[0072] In summary, the working principle of a microchannel reactor for chemical industry provided by the embodiment of the present invention, that is, the reaction method using the microchannel reactor for chemical industry of the embodiment of the present invention is:

[0073] When a reaction is carried out, the liquid is input into the pretreatment tank 7 through the input pipe 6, then enters the liquid inlet pipe 2, and then enters a plurality of supply tanks 501 through a plurality of branch pipes 4, and then enters a microchannel reaction module 3. After the reaction, it is input into the liquid outlet pipe 11 through the branch pipe 4 on the other side and output. At the same time, the heat-conducting medium enters a transfer tank 518 through a heat exchange conduit 10, and then enters another heat exchange conduit 10 through another transfer tank 518 to complete the circulation of the heat-conducting medium;

[0074] Furthermore, when a microchannel reaction module 3 is blocked, the liquid pressure in the supply box 501 continues to rise, which in turn forces the pressure plate 505 to move upward, and drives the follower column 506 to move, and at the same time drives the return spring 508 to contract, and the follower column 506 moves in the rotating hole 514, so that the follower column 506 moves on the positioning block 516 through the arc driving groove 515, and then drives the follower column 506 to rotate. The rotation of the follower column 506 drives the stop plate 507 to separate from the integrated bracket 509. At this time, under the expansion force of the expansion spring 510, the integrated bracket 509 moves upward quickly, and drives the two rotating lifting rods 511 to rotate. The rotating lifting rod 511 rotates and drives the lifting frame 512 to move through the lifting slide shaft 513, so that the lifting frame 512 can be lifted. The lifting frame 512 drives the conducting frame 503 to move, thereby causing the two conducting frames 503 to move synchronously. At this time, the two conducting frames 503 close one switching tube 502 and open the other switching tube 502. At the same time, the integrated bracket 509 moves synchronously to drive the three synchronization frames 517 to move, and then drive the three connecting frames 520 to move, thereby synchronously completing the switching of the branch pipe 4 on the heat exchange pipe 10 and the liquid outlet pipe 11, and allowing the liquid and heat transfer medium to be replaced as a whole into another microchannel reaction module 3, achieving uninterrupted reaction and ensuring the reaction effect. This breaks through the limitations of traditional passive anti-blocking, avoids downtime for maintenance, significantly improves the continuous operation cycle of the equipment, reduces manual intervention and maintenance costs, extends the equipment life, and thus significantly improves the equipment reliability and production efficiency.

[0075] Furthermore, when the liquid enters the pre-treatment box 7, it is pre-filtered by a filter cover 802 to avoid clogging of the microchannel reaction module 3. When the filter cover 802 is blocked, the liquid level in the pre-treatment box 7 rises continuously, and then the upper floating frame 804 is forced to float up and move in the socket 805, while squeezing the return spring 806. The upper floating frame 804 moves and drives the conversion rod 812 to rotate through the toggle frame 811, and the conversion rod 812 drives the conversion column 807 to rotate, and the conversion column 80 7 drives the conversion sleeve 801 to rotate, so that the conversion sleeve 801 drives the blocked filter cover 802 to separate from the liquid inlet pipe 2, and drives the other filter cover 802 to connect with the liquid inlet pipe 2, thereby achieving continuous liquid inflow, further ensuring that the equipment can continue to operate; at the same time, the conversion column 807 rotates on the connecting seat 808, and the rotation of the conversion column 807 drives the multiple slots 809 to separate from the multiple blocks 810. After rotating to the specified position, the multiple blocks 810 are locked in the multiple slots 809, thereby achieving the positioning of the conversion column 807;

[0076] In addition, after a filter cover 802 moves to a specified position, a jacking frame 906 drives an arc-shaped extrusion block 908 to contact an extrusion frame 909 and be extruded by the extrusion frame 909. Subsequently, the arc-shaped extrusion block 908 drives the jacking frame 906 to move in the reverse direction and drives a tension spring 907 to contract. The movement of the jacking frame 906 pushes a closing cover 901, causing the closing cover 901 to rotate and open, thereby opening the filter cover 802 for use. Additionally, when the closing cover 901 rotates, it rotates on a connecting shaft 904 through a mounting cavity 903 and drives a closing torsion spring 905 to be stressed. Therefore, when the filter cover 802 does not contact a liquid inlet pipe 2, under the resilience of the closing torsion spring 905, the closing cover 901 closes the filter cover 802 to prevent the filter cover 802 from being blocked in advance.

[0077] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes, should be covered by the protection scope of the present invention.

Claims

1. A microchannel reactor for chemical industry, characterized in that, It includes a microchannel reactor mainframe, wherein a plurality of groups of microchannel reaction modules are arranged in the microchannel reactor mainframe, wherein each group of the microchannel reaction modules has two modules, wherein a liquid inlet pipe and a liquid outlet pipe are arranged in the microchannel reactor mainframe, wherein the liquid inlet pipe is connected to an input pipe, and the liquid inlet pipe and the liquid outlet pipe are both connected to a plurality of branch pipes, wherein the plurality of branch pipes are respectively connected to the plurality of groups of the microchannel reaction modules, and a heat exchange pipe is connected between two adjacent microchannel reaction modules; Each group of microchannel reaction modules is equipped with an uninterrupted reaction mechanism, which is used to switch between the two microchannel reaction modules in the same group; the uninterrupted reaction mechanism includes two supply boxes, which are respectively installed on both sides of a group of microchannel reaction modules, and both sides of the supply box are connected to switching pipes, which are respectively connected to the two microchannel reaction modules, and the branch pipe is connected to the supply box; two transfer boxes are provided on one side of a group of microchannel reaction modules, and both transfer boxes are connected to the heat exchange pipe, and both sides of the transfer box are connected to connecting pipes, which are respectively connected to the two microchannel reaction modules; A pretreatment box is connected between the liquid inlet pipe and the input pipe, and a continuous liquid inlet device is installed in the pretreatment box, and the continuous liquid inlet device is used to continuously feed the liquid into the liquid inlet pipe; the continuous liquid inlet device includes a conversion sleeve, which is rotatably installed in the pretreatment box, and multiple filter covers are inserted in the conversion sleeve, one of the filter covers corresponds to the liquid inlet pipe and filters the liquid entering the liquid inlet pipe.

2. The microchannel reactor for chemical industry according to claim 1, characterized in that, The uninterrupted reaction mechanism further includes two conductive racks with holes, both of which are located in the supply box, and the holes on the two conductive racks are staggered. Two lifting racks are slidably installed in the supply box, and the two lifting racks are respectively installed on the two conductive racks; Two rotating lifting rods are rotatably mounted on an inner wall of one side of the supply box, and a lifting slide shaft is rotatably mounted on each of the two rotating lifting rods. The two lifting slide shafts are movably mounted in the two lifting frames respectively.

3. The microchannel reactor for chemical industry according to claim 2, characterized in that, An integrated bracket is movably mounted on the top side of the supply box, and the integrated bracket is movably mounted on the two rotating lifting rods. A support spring is connected between the supply box and the integrated bracket. A connecting frame is movably installed in one of the supply boxes and the two transfer boxes. Two staggered holes are provided on the connecting frame. Synchronous frames are installed on the three connecting frames. The three synchronous frames are installed on the integrated bracket.

4. The microchannel reactor for chemical industry according to claim 3, characterized in that, A recovery box is installed in the supply box, a pressure plate is movably installed in the recovery box, and a return spring is connected between the recovery box and the pressure plate; A rotating hole is provided on the inner wall of the top side of the supply box, a follower column is rotatably installed in the rotating hole, the pressure plate is installed on the follower column, and a stop plate is installed on the top of the follower column, and the stop plate is used to block the integrated bracket; An arc-shaped driving groove is provided on the follower column, and a positioning block is installed on the inner wall of the rotating hole, and the positioning block extends into the arc-shaped driving groove.

5. A microchannel reactor for chemical industry according to claim 1, characterized in that, The pretreatment box is mounted with an installation box, a socket is mounted in the installation box, a floating frame is movably mounted in the socket, and a reset spring for driving the floating frame to reset is connected between the floating frame and the socket; A conversion column is rotatably installed in the pretreatment box, and the conversion sleeve is sleeved on the conversion column. A plurality of conversion rods are equidistantly installed on the conversion column in a ring. A toggle frame is installed on the bottom side of the upper floating frame. The upper floating frame moves upward and drives the conversion rods to rotate through the toggle frame, which is used to drive the conversion sleeve to rotate through the conversion column.

6. The microchannel reactor for chemical industry according to claim 5, characterized in that, A connecting seat is installed in the pre-treatment box, and the conversion column is rotatably installed on the connecting seat; A plurality of card slots are formed in an annular and equidistant manner on the inner wall of the conversion column, and a plurality of card blocks are installed in an annular and equidistant manner on the connecting seat, and the plurality of card blocks are respectively clamped in the plurality of card slots.

7. A microchannel reactor for chemical industry according to claim 1, characterized in that, It also includes an active sealing mechanism, which is installed on the conversion sleeve and is used to seal and protect the multiple filter covers.

8. A microchannel reactor for chemical industry according to claim 7, characterized in that, The active sealing mechanism includes a plurality of sealing covers, a plurality of U-shaped frames are installed on the conversion sleeve, and the plurality of sealing covers are rotatably installed in the plurality of U-shaped frames respectively; The closing cover is provided with an installation cavity, in which a connecting shaft is rotatably installed. The connecting shaft is installed on the U-shaped frame. A closed torsion spring is installed on the connecting shaft, and the other end of the closed torsion spring is installed on the inner wall of the installation cavity.

9. The microchannel reactor for chemical industry according to claim 8, characterized in that, A plurality of lifting frames are movably installed on the conversion sleeve at equal intervals in an annular manner. The lifting frames are moved to open the closing cover. A tension spring is connected between the lifting frames and the conversion sleeve. An arc-shaped extrusion block is installed on the lifting frame, and an extrusion frame is installed in the pretreatment box. The lifting frame drives the arc-shaped extrusion block to contact the extrusion frame, so as to drive the lifting frame to move.

10. A microchannel reaction method for chemical industry, which is carried out according to any one of the microchannel reactors for chemical industry as claimed in claims 1-9, characterized in that, The following steps are involved: S1. A microchannel reaction module is clogged, and the liquid pressure in the supply box continues to rise, driving the pressure plate upward and the follower column to move. The follower column moves in the rotating hole, and the follower column moves on the positioning block through the arc-shaped driving groove, thereby driving the follower column to rotate. The rotation of the follower column drives the stop plate to separate from the integrated bracket; S2. The stop plate detaches from the integrated bracket, and the spring is expanded to drive the integrated bracket to move upward rapidly. The integrated bracket drives the two rotating lifting rods to rotate. The rotating lifting rods rotate and drive the lifting frame to move through the lifting slide shaft, so that the lifting frame drives the conducting frame to move. The two conducting frames close one switching tube and open the other switching tube. The integrated bracket drives the three connecting frames to move through the three synchronous frames, synchronously completing the switching of the branch pipes on the heat exchange pipe and the liquid outlet pipe, so that the liquid and heat transfer medium are completely replaced in another microchannel reaction module, and the reaction is carried out uninterruptedly; S3. When the liquid enters the pretreatment box, it is pre-filtered by a filter cover. The filter cover becomes clogged, causing the liquid level in the pretreatment box to rise continuously. This forces the floating frame to float upward. The floating frame moves, driving the switching rod to rotate through the toggle frame. The switching rod drives the switching column to rotate, which drives the switching sleeve to rotate. The switching sleeve drives the clogged filter cover out of the liquid inlet pipe and drives the other filter cover to connect to the liquid inlet pipe, thereby continuously inputting liquid. S4. The conversion sleeve drives the filter cover to rotate to the specified position, so that the lifting frame drives the arc-shaped extrusion block to contact the extrusion frame and be squeezed by the extrusion frame, so that the arc-shaped extrusion block drives the lifting frame to move in the opposite direction and drives the tension spring to contract. The lifting frame moves and pushes the closing cover, so that the closing cover rotates open and the filter cover is opened for use.

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