Flow guide assembly applied to photocatalytic reactor
By introducing a flow guiding component into the photocatalytic reactor, the problem of low efficiency in medium entry and exit was solved, achieving uniform distribution of the medium in the reaction channel and uniform outflow of catalytic products, thus improving the reactor efficiency.
Patent Information
- Application Number
- CN202520175417.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-26
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2035-01-26
AI Technical Summary
Existing photocatalytic reactors have simple reaction channel structures and low media entry and exit efficiencies, resulting in low catalytic reaction efficiency.
A flow guiding component, including an inlet flow guide and an outlet flow guide, is introduced into the photocatalytic reactor. It is designed as a main channel and an auxiliary channel structure. The inlet flow guide is used for uniform distribution of the medium, and the outlet flow guide avoids flow dead zones and ensures uniform outflow of catalytic products.
It improves the uniform distribution and outflow efficiency of the medium in the reaction channel, avoids flow dead zones, and enhances the conversion rate and efficiency of the catalytic reaction.
Smart Images
Figure CN223760973U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of photocatalytic equipment technology, and in particular to a flow guiding component used in a photocatalytic reactor. Background Technology
[0002] Photocatalysis is a hot research area in organic synthesis in recent years, and is considered an effective method to solve the energy and environmental crisis. Photocatalysis effectively optimizes reaction conditions, improves energy utilization efficiency, and enables highly efficient redox, coupling, and cycloaddition reactions under mild conditions. Furthermore, photocatalysis can achieve reactions that are difficult to achieve using traditional methods, effectively controlling the extent of the reaction, reducing side reactions, and improving the safety and reliability of the reaction.
[0003] In the research and application of photocatalysis, a photocatalytic reactor is an essential reaction device. A photocatalytic reactor includes a catalytic reaction chamber, which is hollow and forms a reaction channel with an inlet and an outlet. The reactor also includes a catalyst, which catalyzes the medium flowing through the catalytic reaction chamber, causing the medium to undergo a catalytic reaction. Current photocatalytic reactors have a simple reaction channel structure, typically a traditional single-flow cylindrical channel, resulting in low efficiency for the medium entering and exiting the catalytic reaction chamber. Summary of the Invention
[0004] In view of this, the purpose of this application is to provide a flow guiding component for use in a photocatalytic reactor.
[0005] To achieve the above-mentioned objectives, this application provides a flow guiding component for a photocatalytic reactor, the photocatalytic reactor comprising: a catalytic reaction chamber, and a catalyst for carrying out a catalytic reaction of the medium flowing in the catalytic reaction chamber;
[0006] The catalytic reaction chamber is hollow, forming a reaction channel, which has an inlet and an outlet.
[0007] The flow guiding assembly includes: an inlet flow guide and / or an outlet flow guide;
[0008] The inlet guide is disposed near the inlet and is used to divert the medium entering from the inlet into the reaction channel;
[0009] The outlet guide is located near the outlet and is used to divert the catalytic products flowing out of the reaction channel to the outlet.
[0010] As a further improvement to the embodiments of this disclosure, the reaction channel includes at least:
[0011] The main channel extends axially along the catalytic reaction chamber;
[0012] The first inlet auxiliary channel is connected at one end to the main channel and at the other end gradually extends in a direction that brings the medium closer to it.
[0013] The inlet guide is disposed in the first inlet auxiliary channel.
[0014] As a further improvement to the embodiments of this disclosure, the radial cross-sectional area of the first inlet auxiliary channel is greater than the radial cross-sectional area of the main channel.
[0015] As a further improvement to the embodiments of this disclosure, the inlet guide includes at least two inlet guide plates, which are arranged at circumferential intervals along the reaction channel to form an inlet guide channel.
[0016] As a further improvement to the embodiments of this disclosure, the inlet guide further includes an inlet connecting block, the inlet connecting block being fixed to the reaction channel, and the inlet guide plates being arranged at circumferential intervals along the inlet connecting block;
[0017] And / or, the inlet guide plate is embedded in the reaction channel;
[0018] And / or, along the direction of entry of the medium, the area of the inlet guide channel gradually increases.
[0019] As a further improvement to the embodiments of this disclosure, the reaction channel further includes a second inlet auxiliary channel, which is connected to the end of the first inlet auxiliary channel away from the main channel, and the medium enters the first inlet auxiliary channel through the second inlet auxiliary channel;
[0020] And / or, the inlet guide is at least partially embedded in the first inlet auxiliary channel.
[0021] As a further improvement to the embodiments of this disclosure, the reaction channel includes: a main channel and an outlet auxiliary channel connecting the main channel and the outlet;
[0022] Both the main channel and the auxiliary outlet channel extend axially along the catalytic reaction chamber; one end of the auxiliary outlet channel forms the outlet.
[0023] The outlet guide is disposed in the main channel and / or the outlet auxiliary channel.
[0024] As a further improvement to the embodiments of this disclosure, the radial cross-sectional area of the outlet auxiliary channel is larger than the radial cross-sectional area of the main channel;
[0025] The auxiliary exit channel shares the same inner wall as the main channel.
[0026] As a further improvement of the embodiments of this disclosure, the outlet guide includes at least two spaced outlet guide plates, the sidewalls of adjacent outlet guide plates gradually approaching each other along the outflow direction of the catalytic product, and having a gap at the farthest end of adjacent outlet guide plates along the outflow direction.
[0027] As a further improvement of the embodiments of this disclosure, the outlet guide further includes an outlet connecting block, the outlet connecting block being fixed relative to the reaction channel, the outlet guide plate being spaced apart circumferentially along the outlet connecting block, and the outlet connecting block being provided with a through hole communicating with the space.
[0028] And / or, the outlet guide plate is an arc-shaped triangular piece;
[0029] And / or, the outlet guide plate is embedded in the reaction channel.
[0030] In summary, the flow guiding component disclosed herein for use in a photocatalytic reactor, by setting an inlet flow guide, enables the medium flowing into the reaction channel through the inlet to be more evenly distributed within the reaction channel; by setting an outlet flow guide, it avoids flow dead zones inside the reaction channel, allowing the catalytic products to flow out more evenly, and also avoids the problem of low conversion rate caused by different reaction residence times of the medium inside the reaction channel. Attached Figure Description
[0031] To more clearly illustrate the technical solutions in this application or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0032] Figure 1 This is a schematic diagram of the structure of a photocatalytic reactor in one embodiment of this application;
[0033] Figure 2 This is a schematic diagram of the inlet guide component.
[0034] Figure 3 This is a schematic diagram of the outlet guide component.
[0035] Figure Labels
[0036] 11. Reaction channel; 111. Inlet; 113. Outlet; 115. Main channel; 116. First inlet auxiliary channel; 117. Second inlet auxiliary channel; 118. Outlet auxiliary channel; 115. Main channel; 30. Inlet guide; 31. Inlet connecting block; 33. Inlet guide plate; 50. Outlet guide; 51. Outlet connecting block; 53. Outlet guide plate; 55. Through hole. Detailed Implementation
[0037] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with specific embodiments and the accompanying drawings.
[0038] It should be noted that, unless otherwise defined, the technical or scientific terms used in the embodiments of this application should have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in the embodiments of this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word covers the element or object listed after the word and its equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0039] Reference Figure 1 As shown, the photocatalytic reactor includes a catalytic reaction chamber and a catalyst for catalytic reaction of the medium flowing through the catalytic reaction chamber. The catalytic reaction chamber is hollow, forming a reaction channel 11, which has an inlet 111 and an outlet 113. The photocatalytic reactor also includes a flow guiding assembly, which includes an inlet guide 30 and / or an outlet guide 50. The inlet guide 30 is positioned near the inlet 111 to divert the medium entering from the inlet 111 into the reaction channel 11. The outlet guide 50 is positioned near the outlet 113 to divert the catalytic products flowing out of the reaction channel to the outlet 113. By setting the inlet guide, the medium flowing into the reaction channel through the inlet can be more evenly distributed within the reaction channel. By setting the outlet guide, dead flow zones inside the reaction channel are avoided, allowing the catalytic products to flow out more evenly and preventing low conversion rates caused by varying residence times of the medium within the reaction channel.
[0040] In this disclosed embodiment, the catalyst can be a photocatalytic light source, such as an ultraviolet light source, a visible light source, or an infrared light source, which can be selected according to the required photocatalytic reaction, and is not specifically limited. The catalyst can also be an electrocatalytic source, such as high and low electrodes. In a specific embodiment of this disclosure, the catalyst is a photocatalytic light source.
[0041] In the implementation method disclosed herein, the reaction channel connecting the inlet 111 and the outlet 113 can be one or more, and there is no specific limitation.
[0042] The shape of the reaction channel can also be specifically set as needed; for example: straight channel, curved channel, etc.
[0043] Combination Figure 2 As shown, in a preferred embodiment of this disclosure, the reaction channel 11 includes: a main channel 115, a first inlet auxiliary channel 116 and a second inlet auxiliary channel 117 sequentially connected to the main channel 115 and the inlet 111; and an outlet auxiliary channel 118 connected to the main channel 115 and the outlet 113.
[0044] Preferably, the main channel 115 extends axially along the catalytic reaction chamber; the main channel 115 is an annular cylindrical shape, and the catalyst can be disposed near the outer side of the inner wall of the annular cylindrical shape of the main channel 115, or near the outer side of the outer wall of the annular cylindrical shape of the main channel 115; in a specific example of this disclosure, the catalyst is a photocatalytic light source, the outer wall of the annular cylindrical shape of the main channel 115 is made of a light-transmitting material, and the photocatalytic light source is disposed around the outer side of the outer wall of the annular cylindrical shape of the main channel 115; the light emitted by the photocatalytic light source can penetrate the outer wall of the annular cylindrical shape of the main channel 115 and irradiate the inside of the main channel 115; in addition, a cooling channel is formed between the outer sides of the inner wall of the annular cylindrical shape of the main channel 115, and a refrigerant can flow in the cooling channel to cool the main channel 115, which is suitable for reactions with high exothermic reaction and low reaction temperature, and further improves the reaction efficiency.
[0045] In this disclosed embodiment, the annular cylindrical outer wall of the main channel 115 is made of quartz glass. Quartz glass has excellent transmittance across a continuous wavelength range from ultraviolet to infrared radiation, allowing transmission of far-ultraviolet light, visible light, and near-infrared light, exhibiting high light transmittance and good optical uniformity. Furthermore, quartz glass is an acidic material, exhibiting inertness to all acids except hydrofluoric acid and hot phosphoric acid, making it the best acid-resistant material. At room temperature, the corrosive effects of alkalis and salts on quartz glass are minimal, demonstrating its excellent chemical stability. In other embodiments, the annular cylindrical outer wall of the main channel 115 can be made of transparent materials such as borosilicate glass. The annular cylindrical shape of the main channel 115 allows the light emitted from the photocatalytic light source to encompass and irradiate the main channel 115, resulting in a more complete photocatalytic reaction, improved reaction efficiency, and the ability to achieve continuous and large-scale production.
[0046] Optionally, the photocatalytic light source can be an ultraviolet light source, a visible light source, an infrared light source, etc., and can be selected according to the required photocatalytic reaction, without any specific limitation.
[0047] In the implementation of this disclosure, the arrow in the figure indicates the direction of medium entry; one end of the first inlet auxiliary channel 116 is connected to the main channel 115, and the other end gradually extends in a direction closer to each other and is used for the medium to enter; the second inlet auxiliary channel 117 is connected to the end of the first inlet auxiliary channel 116 away from the main channel 115, and the medium enters the first inlet auxiliary channel 116 through the second inlet auxiliary channel 117.
[0048] In a specific example of this disclosure, the first inlet auxiliary channel 116 is a frustum-shaped annular channel; the second inlet auxiliary channel 117 is a cylindrical channel; one end of the second inlet auxiliary channel 117 forms an inlet 111; and the inlet guide 30 is disposed in the first inlet auxiliary channel 116.
[0049] The properties of the medium entering the reaction channel from inlet 111 are not limited; it can be liquid and / or gas, etc. The medium enters the second inlet auxiliary channel 117 of the single channel from inlet 111, and then the medium is guided by the inlet guide 30 through the multi-channel into the main channel 115. In this way, the medium can be more evenly distributed in the reaction channel, ensuring the stability of the medium flow in the main channel 115, which is beneficial to improving the efficiency of photocatalytic reaction.
[0050] In a preferred embodiment of this disclosure, the radial cross-sectional area of the first inlet auxiliary channel 116 is larger than that of the main channel. This ensures that the medium enters the inlet 111 at a large flow rate, thus improving the medium flow efficiency. Of course, in other embodiments of this disclosure, without considering the flow rate, the relationship between the radial cross-sectional areas of the first inlet auxiliary channel 116 and the main channel is not limited, and will not be further elaborated here.
[0051] Here, the flow direction of the medium in the reaction channel is defined as the axial direction.
[0052] In the embodiments disclosed herein, the inlet guide member 30 includes at least two inlet guide plates 33, which are arranged at circumferential intervals along the first inlet auxiliary channel 116 to form an inlet guide channel.
[0053] In a preferred embodiment of this disclosure, the inlet guide 30 further includes an inlet connecting block 31, which is fixed to the first inlet auxiliary channel 116. The inlet guide plate 33 is arranged at intervals along the circumference of the inlet connecting block 31 and extends toward the main channel 115.
[0054] Preferably, the shape of the inlet connecting block 31 is adapted to the end of the first inlet auxiliary channel 116 away from the main channel 115; in the specific example of this disclosure, the inlet connecting block 31 is frustoconical, and the top end of the inlet connecting block 31 is set close to the port of the first inlet auxiliary channel 116 away from the main channel 115; so that the outer wall surface of the inlet connecting block 31 is parallel to the outer wall surface of the first inlet auxiliary channel 116; which is conducive to the installation of the inlet guide plate 33.
[0055] The inlet connecting block 31 is fixedly connected to the first inlet auxiliary channel 116; for example, the inlet connecting block 31 is fixedly connected to the first inlet auxiliary channel 116 by means of adhesive or other methods; in a specific example of this disclosure, the inlet connecting block 31 has a through hole at the central axis position; fasteners such as screws can be connected to the first inlet auxiliary channel 116 through the through hole of the inlet connecting block 31, which will not be further described here.
[0056] In a preferred embodiment of this disclosure, the number of inlet guide plates 33 is set to at least two; the inlet guide plates 33 are spaced apart to form an inlet guide channel; the spacing between the inlet guide plates 33 is equal; the number of inlet guide plates is preferably set to 2-16; the number of inlet guide plates 33 is preferably even, and they are arranged symmetrically with respect to the axis of the inlet connecting block 31.
[0057] The material of the inlet guide component 30 is not limited, but corrosion-resistant materials are preferred; further details will not be provided here.
[0058] In a preferred embodiment of this disclosure, the inlet guide 30 is at least partially embedded in the first inlet auxiliary channel 116.
[0059] Specifically, the inlet guide plate 33 is embedded in the first inlet auxiliary channel, and / or the area of the inlet guide channel gradually increases along the inlet direction of the medium, so as to facilitate the medium entering through a single channel to be diverted into multiple channels to enter the main channel 115 after passing through the inlet guide plate 33.
[0060] In a specific example of this disclosure, the guide channel formed by the inlet guide plate 33 and the inner wall of the first inlet auxiliary channel 116 is frustoconical, and the top end of the guide channel is close to the inlet 111, making it easy for the medium to flow through the guide channel into the main channel 115.
[0061] Combination Figure 3As shown, in a preferred embodiment of this disclosure, the outlet auxiliary channel 118 extends axially along the catalytic reaction chamber; in a specific example of this disclosure, the outlet auxiliary channel 118 is an annular cylindrical shape; one end of the outlet auxiliary channel 118 forms an outlet 113; and an outlet guide 50 is disposed in the main channel 115 and / or the outlet auxiliary channel 118. By providing the outlet guide 50, dead zones in the flow inside the reaction channel are avoided, allowing the catalytic products to flow out more uniformly, and also preventing the problem of low conversion rate caused by different reaction residence times of the medium inside the reaction channel.
[0062] Preferably, the radial cross-sectional area of the outlet auxiliary channel 118 is larger than that of the main channel; the outlet auxiliary channel 118 shares the same inner wall surface as the main channel 115. This arrangement facilitates the continuous outflow of catalytic products from the outlet 113 via the main channel 115 and the outlet auxiliary channel 118.
[0063] In this disclosed embodiment, the outlet guide 50 includes at least two spaced outlet guide plates 53; the sidewalls of adjacent outlet guide plates 53 gradually approach each other along the outflow direction of the catalytic product, and there is a gap at the farthest end of the adjacent outlet guide plates 53 along the outflow direction.
[0064] In a specific embodiment of this disclosure, the outlet guide 50 further includes: an outlet connecting block 51, which is fixed relative to the outlet auxiliary channel 118; an outlet guide plate 53 is spaced apart along the circumference of the outlet connecting block 51; and the outlet connecting block 51 is provided with through holes 55 that communicate with the spaced holes.
[0065] The catalytic product flows from the self-channel 115 to the outlet 113. After being guided by the outlet guide plate 53, the catalytic product flows through multiple through holes 55 along the single-channel outlet auxiliary channel 118, so that the catalytic product can flow more evenly in the circumferential direction to the outlet 113, and then flow out of the reaction channel.
[0066] In a preferred embodiment of this disclosure, the number of outlet guide plates 53 is set to at least two; preferably 2-16; or it can be set to an even number, arranged symmetrically with respect to the axis of the outlet connecting block 51.
[0067] There are no restrictions on the material of the outlet guide component 50, but corrosion-resistant materials are preferred; further details will not be elaborated here.
[0068] In a preferred embodiment of this disclosure, the outlet guide 50 is at least partially embedded in the main channel 115 and / or the outlet auxiliary channel 118.
[0069] Specifically, the outlet connecting block 51 is ring-shaped; the outlet connecting block 51 is embedded in the outlet auxiliary channel 118.
[0070] The exit guide plate 53 is an arc-shaped triangular piece; the exit guide plate 53 is embedded in the main channel 115.
[0071] The through hole 55 connects to the inner wall of the outlet connecting block 51, which facilitates the sequential flow of catalytic products from the first outlet guide channel and the through hole 55 out of the outlet 113.
[0072] Along the radial direction of the outlet connecting block 51, the opening length of the through hole 55 is greater than the thickness of the outlet guide plate 53; so that the radial cross-sectional area of the through hole 55 is greater than the radial cross-sectional area at the intersection of the first outlet guide channel and the through hole 55, which is conducive to the catalytic product entering the through hole 55 from the first outlet guide channel.
[0073] Of course, in other embodiments of this disclosure, the outlet guide plate 53 can also be configured as a curved plate, a long plate, a tiered plate, or other shapes along the axial direction of the main channel 115, which will not be described in detail here.
[0074] In summary, the flow guiding component disclosed herein, applied to a photocatalytic reactor, allows for a more uniform distribution of the medium flowing into the reaction channel through the inlet flow guide; and by setting an outlet flow guide, it avoids flow dead zones within the reaction channel, enabling the catalytic products to flow out more uniformly. It also prevents the low conversion rate caused by varying residence times of the medium within the reaction channel, thus improving the efficiency of the photocatalytic reactor.
[0075] It should be noted that some embodiments of this application have been described above. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps described in the claims can be performed in a different order than that shown in the above embodiments and still achieve the desired result. In addition, the processes depicted in the drawings do not necessarily require the specific order or sequential order shown to achieve the desired result.
[0076] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of this application (including the claims) is limited to these examples; within the framework of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of the above embodiments of this application, which are not provided in detail for the sake of brevity.
[0077] The embodiments of this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the embodiments of this application should be included within the protection scope of this application.
Claims
1. A flow guide assembly for application to a photocatalytic reactor, the photocatalytic reactor comprising: The catalytic reaction chamber and the catalytic device for catalyzing the medium flowing in the catalytic reaction chamber; The catalytic reaction chamber is characterized in that a reaction channel is formed in the catalytic reaction chamber, and the reaction channel has an inlet and an outlet; The flow guide assembly comprises an inlet flow guide and / or an outlet flow guide; The inlet flow guide is arranged near the inlet and is used for distributing the medium entering from the inlet into the reaction channel; The outlet flow guide is arranged near the outlet and is used for distributing the catalytic product flowing out of the reaction channel to the outlet.
2. The flow guide assembly for use in a photocatalytic reactor according to claim 1, wherein, The reaction channel comprises at least: A main channel extending along the axial direction of the catalytic reaction chamber; A first inlet auxiliary channel connected to one end of the main channel and gradually extending in the direction of approaching each other and used for the medium to enter; The inlet flow guide is arranged in the first inlet auxiliary channel.
3. The flow guide assembly applied to the photocatalytic reactor according to claim 2, wherein The radial cross-sectional area of the first inlet auxiliary channel is greater than that of the main channel.
4. The flow guide assembly for use in a photocatalytic reactor according to any one of claims 1 to 3, wherein The inlet flow guide comprises at least two inlet guide plates arranged at intervals along the circumferential direction of the reaction channel to form an inlet guide channel.
5. The flow guide assembly applied to the photocatalytic reactor according to claim 4, wherein The inlet flow guide further comprises an inlet connecting block fixed to the reaction channel, and the inlet guide plates are arranged at intervals along the circumferential direction of the inlet connecting block; And / or, the inlet guide plates are embedded in the reaction channel; And / or, the area of the inlet guide channel gradually increases in the direction of the medium entering.
6. The flow guide assembly applied to the photocatalytic reactor according to claim 2, wherein The reaction channel further comprises a second inlet auxiliary channel connected to one end of the first inlet auxiliary channel away from the main channel, and the medium enters the first inlet auxiliary channel through the second inlet auxiliary channel; And / or, the inlet flow guide is at least partially embedded in the first inlet auxiliary channel.
7. The flow guide assembly applied to the photocatalytic reactor according to claim 1, wherein The reaction channel comprises a main channel and an outlet auxiliary channel communicating the main channel and the outlet; Both the main channel and the outlet auxiliary channel extend along the axial direction of the catalytic reaction chamber; and one end of the outlet auxiliary channel forms the outlet; The outlet flow guide is arranged in the main channel and / or the outlet auxiliary channel.
8. The flow guide assembly applied to the photocatalytic reactor according to claim 7, wherein The radial cross-sectional area of the outlet auxiliary channel is greater than that of the main channel; The outlet auxiliary channel and the main channel share an inner wall surface. 9.The flow guide assembly for a photocatalytic reactor according to claim 1, characterized in that, The outlet flow guide comprises at least two outlet guide plates arranged at intervals, the side walls of adjacent outlet guide plates gradually approach each other in the direction of the catalytic product flowing out, and have a gap at the farthest end of the adjacent outlet guide plates in the direction of the catalytic product flowing out.
10. The flow guide assembly for use in a photocatalytic reactor according to claim 9, wherein the outlet flow guide further comprises an outlet connecting block fixed relative to the reaction channel, the outlet guide plates are arranged along the circumference of the outlet connecting block, and the outlet connecting block is provided with through holes in communication with the intervals. And / or, the outlet guide plates are arc-shaped triangular plates. And / or, the outlet guide plates are embedded in the reaction channel.