A continuous flow microchannel reactor for the synthesis of fluoroacetophenones

Abstract

The utility model relates to reactor technical field, concretely relates to a kind of continuous flow microchannel reactor of fluoroacetophenone synthesis, including frame, the inside of the frame is provided with passageway, further including multiple arc-shaped parts fixedly installed on the inner wall of the passageway, further including mobile piece movably connected on the outer wall of the frame, multiple mounting plates are fixedly installed in the mobile piece, catalyst is fixedly installed on the outer wall of the mounting plate, and multiple overlap grooves are provided on the frame, and the outer wall of the catalyst and the outer wall of overlap groove are slidingly matched. Through the movably connected relationship between the frame and mobile piece set, the flexible replacement of catalyst can be realized, the synthesis efficiency of fluoroacetophenone is ensured, and in the replacement process of catalyst, the flow channel can be blocked using arc-shaped part, so that the synthesis quality of fluoroacetophenone is ensured.

Description

Technical Field

[0001] This invention relates to the field of reactors, and more particularly to a continuous flow microchannel reactor for the synthesis of fluoroacetophenone. Background Technology

[0002] Microchannel reaction technology has been widely recognized as an important research direction in the fields of natural science and chemical engineering. Microchannel continuous flow reactors reduce equipment space and construction materials, lower operating costs, and transform reactions within microchannels into continuous flow reactions, converting reaction time into flow length. This can significantly improve reaction efficiency, conversion rate, and selectivity, and even achieve precise quantitative conversion of molar ratios. At the same time, it can shorten reaction time, reduce synthesis cycles, and lower total reaction costs and environmental impact costs.

[0003] Fluoroacetophenone can also be synthesized using a microchannel reactor. However, existing continuous flow microchannel reactors typically have catalysts placed on the inner walls of the flow channels. After a period of use, the catalysts usually need to be replaced manually, which affects the reactor's efficiency. Therefore, we propose a continuous flow microchannel reactor for the synthesis of fluoroacetophenone. Summary of the Invention

[0004] To address the aforementioned shortcomings of existing technologies, this invention provides a continuous flow microchannel reactor for the synthesis of fluoroacetophenone. This effectively solves the problem that while existing continuous flow microchannel reactors can also be used for fluoroacetophenone synthesis, the inner walls of the flow channels typically contain catalysts that require manual replacement after a period of use, thus affecting the reactor's efficiency.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A continuous flow microchannel reactor for the synthesis of fluoroacetophenone includes a frame with channels inside, a plurality of arc-shaped components fixedly installed on the inner wall of the channels, and a movable component movably connected to the outer wall of the frame. A plurality of mounting plates are fixedly installed inside the movable component, and a catalyst is fixedly installed on the outer wall of the mounting plates. A plurality of overlapping grooves are provided on the frame, and the outer wall of the catalyst slides in conjunction with the outer wall of the overlapping grooves.

[0007] Preferably, it also includes flat tubes fixed at both ends of the frame, the flat tubes being in communication with the inside of the channel, and the arc-shaped components being linearly and equally spaced on the upper and lower inner walls of the channel.

[0008] Preferably, the plurality of mounting plates are arranged in a staggered structure and correspond to the positions of the plurality of overlapping grooves. When the mounting plate overlaps with the overlapping groove, the outer wall of the catalyst can achieve a seal on the overlapping groove.

[0009] Preferably, the catalyst is arranged in an arc shape, and the catalyst is disposed between the middle of two adjacent arc shapes.

[0010] Preferably, it further includes a bladder disposed between the frame and the middle of the movable member, the bladder being provided with a connecting pipe that maintains communication with its interior, a cavity being provided between the arc-shaped member and the inner wall of the channel, and the cavity being maintained in communication with the connecting pipe through a flexible hose, and a control valve being provided on the flexible hose.

[0011] Preferably, the catalyst is provided in two sets, both of which are fixedly connected to the mounting plate. When the moving part is adjusted relative to the frame, the corresponding capsule is squeezed, and the gas inside it enters the cavity, causing the arc-shaped part to move towards the catalyst side, thereby blocking the channel.

[0012] Preferably, it also includes a trigger switch disposed on the outer wall of the frame, wherein a control valve for controlling the hose opens when the outer wall of the moving part contacts the trigger switch.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] This invention enables flexible catalyst replacement through the movable connection between the frame and the moving parts, ensuring the synthesis efficiency of fluoroacetophenone. Furthermore, during catalyst replacement, the flow channel can be blocked using the arc-shaped parts, guaranteeing the synthesis quality of fluoroacetophenone. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of the reactor of the present invention;

[0017] Figure 2 This is a schematic diagram of the overall exploded structure of the reactor of the present invention;

[0018] Figure 3 This is a front view of the frame structure of the present invention;

[0019] Figure 4This is a schematic diagram of the cross-sectional structure of the reactor of the present invention.

[0020] Drawing number explanation:

[0021] 100. Frame; 101. Channel; 102. Overlap groove; 110. Flat tube; 120. Flexible hose; 130. Trigger switch;

[0022] 200. Moving part; 210. Capsule body; 220. Mounting plate; 230. Connecting pipe; 240. Catalyst;

[0023] 300, arc-shaped component; 301, cavity. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings.

[0025] The following description is intended to disclose the invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious modifications will be apparent to those skilled in the art. The basic principles of the invention defined in the following description can be used in other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the invention.

[0026] Those skilled in the art should understand that, in the disclosure of this invention, the terms "longitudinal," "lateral," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or position based on the orientation or positional relationship shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing this invention and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this invention.

[0027] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number. Example

[0028] See attached document Figure 1-4As shown, a continuous flow microchannel reactor for the synthesis of fluoroacetophenone includes a frame 100, with a channel 101 inside the frame 100. It also includes a plurality of arc-shaped components 300 fixedly installed on the inner wall of the channel 101, and a movable component 200 movably connected to the outer wall of the frame 100. A plurality of mounting plates 220 are fixedly installed inside the movable component 200, and a catalyst 240 is fixedly installed on the outer wall of the mounting plate 220. A plurality of overlapping grooves 102 are opened on the frame 100, and the outer wall of the catalyst 240 slides in fit with the outer wall of the overlapping groove 102. In this application, the channel 101 opened within the frame 100 is the actual reaction space. In order to ensure the completeness of the reaction, multiple arc-shaped members 300 are provided on the inner walls of the upper and lower sides of the channel 101. The arc-shaped members 300 can increase the actual length of the channel 101. As one embodiment, a friction layer can also be provided on the outer wall of the arc-shaped members 300. In this way, the flow time of the raw materials in the channel 101 is increased. A catalyst 240 is provided between the middle of two adjacent arc-shaped members 300. The catalyst 240 can ensure the synthesis efficiency of fluoroacetophenone in the channel 101.

[0029] Furthermore, this application also includes flat tubes 110 fixedly mounted at both ends of the frame 100. The flat tubes 110 are in communication with the interior of the channel 101, and the arc-shaped components 300 are linearly and equally spaced on the upper and lower inner walls of the channel 101. The flat tubes 110 are used to connect to external flow pipes for continuous input of raw materials into the channel 101. When the raw materials enter the interior of the channel 101, the multiple arc-shaped components 300 correspondingly arranged on the inner wall of the channel 101 can slow down the flow rate of the reaction medium, thereby ensuring the efficient synthesis of fluoroacetophenone. It should be noted that the arc-shaped components 300 located on the upper and lower sides of the channel 101 are arranged in a staggered structure, corresponding to a wavy flow direction of the actual reaction medium. This method ensures that the reaction medium can fully react with the catalyst 240 arranged between the middle of two adjacent arc-shaped components 300, thereby improving the synthesis efficiency of fluoroacetophenone.

[0030] Specifically, in this application, the frame 100 and the movable member 200 are movably connected, and multiple mounting plates 220 are arranged in a staggered structure and correspond to the positions of multiple overlapping grooves 102. When the mounting plate 220 overlaps with the overlapping groove 102, the outer wall of the corresponding catalyst 240 can seal the overlapping groove 102. There are two sets of catalysts 240, and both are fixedly connected to the mounting plate 220. When the movable member 200 is adjusted relative to the frame 100, the corresponding bladder 210 is squeezed, and the gas inside it enters the cavity 301, causing the arc-shaped member 300 to move toward the catalyst 240 side, thereby sealing the channel 101. In this application, the movable component 200 is provided with multiple mounting plates 220, and each mounting plate 220 is located between the middle of two adjacent arc-shaped components 300. Along the center line of the channel 101, two sets of catalysts 240 are provided on the mounting plate 220. During each synthesis, only one set of catalysts 240 is in use. When one set of catalysts 240 fails after a period of use, the catalyst 240 in the channel 101 is replaced by adjusting the position of the movable component 200 relative to the frame 100. The failed catalyst 240 is exposed to the external environment. In this way, the continuous synthesis of fluoroacetophenone can be guaranteed, and the effective replacement of the catalyst 240 can be facilitated.

[0031] Furthermore, the catalyst 240 has an arc-shaped structure and is positioned between the middle of two adjacent arc-shaped components 300. A mounting frame is wrapped around the outer wall of the catalyst 240, with the catalyst 240 positioned inside the mounting frame. The mounting frame and mounting plate 220 are detachably connected. When the catalyst 240 fails, it can be quickly replaced by disassembling the mounting frame and mounting plate 220, while another set of catalysts 240 can still ensure the continuous synthesis of fluoroacetophenone.

[0032] As mentioned above, in order to ensure the synthesis efficiency of fluoroacetophenone, the catalyst 240 can be quickly replaced in this application. This application also includes a capsule 210 disposed between the frame 100 and the moving member 200. The capsule 210 is provided with a connecting pipe 230 that maintains communication with its interior. A cavity 301 is provided between the arc-shaped member 300 and the inner wall of the channel 101, and the cavity 301 is maintained in communication with the connecting pipe 230 through a flexible hose 120. When adjusting the relative position between the moving member 200 and the frame 100, the capsule 210 disposed between the two is... The capsule 210 will be compressed. Correspondingly, in conjunction with the communication between the inside of the capsule 210 and the inside of the cavity 301, the arc-shaped component 300 will expand. As one implementation method, the arc-shaped component 300 mentioned in this application is made of rubber. When the arc-shaped component 300 expands, the outer wall of the arc-shaped component 300 will come into contact with the moving catalyst 240, thereby blocking the channel 101. At this time, the reaction medium in the channel 101 will be in a suspended state. In this way, the synthesis efficiency is effectively controlled even when the catalysis is incomplete.

[0033] After the relative position of the moving part 200 and the frame 100 is adjusted, the gas in the corresponding capsule 210 will all enter the cavity 301. However, at this time, the catalyst 240 has been replaced. Subsequently, the flow rate of the reaction medium in the channel 101 can be increased. In this application, a control valve is provided on the hose 120, and a trigger switch 130 is also provided on the outer wall of the frame 100. When the outer wall of the moving part 200 contacts the trigger switch 130, the control valve of the hose 120 is opened. After the catalyst 240 is completely replaced, the gas in the corresponding cavity 301 will overflow outward through the hose 120. At this time, the arc-shaped part 300 will return to its original position, the cross-sectional area of ​​the corresponding channel 101 will increase, and the flow rate of the reaction medium will decrease. At this time, fluoroacetophenone can be synthesized again efficiently.

[0034] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments, and any modifications or variations of the embodiments of the present invention may be made without departing from the stated principles.

Claims

1. A continuous flow microchannel reactor for the synthesis of fluoroacetophenone, characterized in that, include: The frame (100) has a channel (101) inside and includes multiple arc-shaped parts (300) fixedly installed on the inner wall of the channel (101). It also includes a movable part (200) movably connected to the outer wall of the frame (100). Multiple mounting plates (220) are fixedly installed inside the movable part (200). A catalyst (240) is fixedly installed on the outer wall of the mounting plate (220). Multiple overlapping grooves (102) are opened on the frame (100). The outer wall of the catalyst (240) slides in conjunction with the outer wall of the overlapping groove (102).

2. The continuous flow microchannel reactor for the synthesis of fluoroacetophenone according to claim 1, characterized in that: It also includes flat tubes (110) fixed at both ends of the frame (100), the flat tubes (110) are connected to the inside of the channel (101), and the arc-shaped parts (300) are linearly and equally spaced on the inner walls of the upper and lower sides of the channel (101).

3. The continuous flow microchannel reactor for the synthesis of fluoroacetophenone according to claim 2, characterized in that: The mounting plates (220) are arranged in a staggered structure and correspond to the positions of the multiple overlapping grooves (102). When the mounting plate (220) overlaps with the overlapping groove (102), the outer wall of the catalyst (240) can seal the overlapping groove (102).

4. The continuous flow microchannel reactor for the synthesis of fluoroacetophenone according to claim 3, characterized in that: The catalyst (240) is arranged in an arc shape, and the catalyst (240) is disposed between the middle of two adjacent arc-shaped parts (300).

5. The continuous flow microchannel reactor for the synthesis of fluoroacetophenone according to claim 4, characterized in that: It also includes a bladder (210) disposed between the middle of the frame (100) and the movable member (200), the bladder (210) being provided with a connecting pipe (230) that maintains communication with its interior, a cavity (301) being provided between the arc-shaped member (300) and the inner wall of the channel (101), and the cavity (301) being maintained in communication with the connecting pipe (230) through a flexible hose (120), and a control valve being provided on the flexible hose (120).

6. The continuous flow microchannel reactor for the synthesis of fluoroacetophenone according to claim 5, characterized in that: The catalyst (240) is provided in two sets, and both are fixedly connected to the mounting plate (220). When the moving part (200) is adjusted relative to the frame (100), the corresponding bladder (210) is squeezed, and the gas inside it enters the cavity (301), causing the arc-shaped part (300) to move toward the catalyst (240) side, thereby blocking the channel (101).

7. The continuous flow microchannel reactor for the synthesis of fluoroacetophenone according to claim 6, characterized in that: It also includes a trigger switch (130) disposed on the outer wall of the frame (100), and when the outer wall of the moving part (200) contacts the trigger switch (130), the control valve for controlling the hose (120) opens.

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