A pull-out vertical flat plate photocatalytic reactor

Abstract

The utility model discloses a kind of pullable vertical flat plate photocatalytic reactor, belong to photocatalytic reactor technical field, reactor includes: shell and pullable glass plate, shell is five-face sealed cavity with opening, each side of shell is glass plate body, sealing connection between glass plate body;Pullable glass plate is high light transmission toughened glass, by the top opening of shell insertion into the cavity of shell, and pullable glass plate is tightly attached to the inner wall of one side of shell, the space between shell inner wall and pullable glass plate is called water layer, the surface of pullable glass plate is coated with catalyst coating, catalyst coating contacts with liquid flowing through water layer, the top of shell is equipped with the water inlet pipe of intercommunication water layer, the bottom of shell is equipped with the water outlet of intercommunication water layer, the pullable glass plate of the utility model is inserted into shell inner cavity using the opening of shell, realize the quick pull of pullable glass plate, facilitate the cleaning, recovery or replacement of catalyst, improve the operation convenience.

Description

Technical Field

[0001] This utility model relates to the field of photocatalytic reactor technology, specifically a pull-out vertical flat plate photocatalytic reactor. Background Technology

[0002] Photocatalytic reactors are key equipment in photocatalytic technology for achieving pollutant degradation reactions. Among existing solar-type photoreactors, non-concentrating photoreactors have better application prospects compared to concentrating photoreactors due to their simple structure, lack of need for tracking devices, and lower material requirements. Among these, flat-plate photocatalytic reactors are widely used compared to box-type and tubular types because of their large light-receiving area, sufficient catalyst coating contact, simple structure, and ease of operation.

[0003] However, the simple structure of the flat-plate photocatalytic reactor makes catalyst replacement difficult. Due to its high sealing requirements, replacing and replenishing the catalyst layer requires disassembling the entire glass plate, which is cumbersome and time-consuming. Utility Model Content

[0004] The purpose of this invention is to provide a pull-out vertical flat-plate photocatalytic reactor that can quickly and conveniently replenish and replace the catalyst.

[0005] The technical solution of this utility model is: A retractable vertical flat-plate photocatalytic reactor, entirely made of glass, is suitable for photocatalytic degradation treatment of wastewater. It includes: a shell, a five-sided sealed cavity with openings, each side of which is a glass plate made of thick tempered glass, and the glass plates are sealed together by sealing rings; a retractable glass plate, made of high-transmittance tempered glass, inserted into the cavity of the shell through the top opening, and closely attached to one inner wall of the shell; the space between the inner wall of the shell and the retractable glass plate is called a water layer; the surface of the retractable glass plate facing the water layer is coated with a catalyst coating, which contacts the liquid flowing through the water layer; an inlet pipe connecting to the water layer is provided at the top of the shell, and an outlet connecting to the water layer is provided at the bottom of the shell; the glass plate opposite the catalyst-coated surface of the shell and the retractable glass plate is a light-transmitting glass plate, and two adjacent glass plates are frosted glass plates. The frosted glass plates on the sidewalls eliminate the strong light zone at the edges, making the catalyst workload more balanced.

[0006] Furthermore, symmetrical pull-out slots are provided on the inner walls of both sides of the housing, and the two sides of the pull-out glass plate are slidably inserted into the pull-out slots.

[0007] Furthermore, a cover is provided at the top of one side of the pull-out glass panel. When the pull-out glass panel is fully inserted, the cover fits tightly with the opening at the top of the housing to seal the opening at the top of the housing and isolate the wastewater treated inside the housing from the air. A magnet is attached to the bottom edge of the cover, and a metal strip is attached to the top of the light-transmitting glass panel. The metal strip and the magnet are positioned correspondingly.

[0008] Furthermore, the pull-out glass panel has a pull-out hole at the center of its top. The pull-out hole is fitted with anti-slip threads.

[0009] Furthermore, the surface of the retractable glass plate facing the water layer is provided with multiple flow-guiding patterns. These patterns are raised strip-shaped structures, with a protrusion height less than the gap height between the retractable glass plate and the transparent glass plate. Multiple flow-guiding patterns are arranged side-by-side, with adjacent patterns staggered. Each flow-guiding pattern is an isosceles trapezoid with a height of 10mm ± 0.2mm, a width of 3.8mm ± 0.2mm, an inclination angle of 30°, and a top surface width of 0.4mm ± 0.2mm. This increases the catalyst adhesion area.

[0010] Furthermore, the catalyst coating is applied to the surface of the pull-out glass plate using an adhesive or solution coating and drying method, and is confined between two adjacent flow channels. This reduces catalyst loss with water.

[0011] Furthermore, the shell is placed at an angle, so that the two inclined sides of the trapezoidal guide channel can have a larger contact area with sunlight after the catalyst is applied.

[0012] Furthermore, the inlet pipe is connected to a water pump, which is connected to a water tank, and the flow rate in the inlet pipe is lower than the flow rate at the outlet. This ensures a negative pressure is created inside the reactor, preventing liquid from overflowing from the top.

[0013] Furthermore, the water outlet is connected to the water tank via a flexible hose.

[0014] Compared with the prior art, the beneficial effects of this utility model are: In this invention, the reaction solution flows directly into the reactor through the top opening of the shell, simplifying the piping structure and reducing manufacturing costs and sealing complexity. The removable glass plate, inserted into the shell's inner cavity via the top opening, allows for quick removal of the glass plate without disassembling the entire flat-plate reactor, enabling easy catalyst cleaning, recovery, or replacement, thus improving operational convenience.

[0015] The present invention features a retractable glass plate coated with a catalyst and multiple flow-guiding patterns, which force the reaction liquid to flow along a tortuous path, significantly extending the residence time of the reactants on the catalyst surface, ensuring full contact reaction, and improving catalytic efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the structure of the pull-out glass panel of this utility model.

[0018] Figure 3 This is a side view of the pull-out glass panel of this utility model.

[0019] Figure 4 This is a schematic diagram of the top structure of this utility model.

[0020] Figure 5 This is a side view of the present invention.

[0021] Figure 6 This is a schematic diagram of the bottom structure of this utility model.

[0022] Figure 7 This is a front structural diagram of the present invention.

[0023] Figure 8 This is a schematic diagram illustrating the usage method of Embodiment 1 of this utility model.

[0024] Figure 9 This is a schematic diagram illustrating the usage method of Embodiment 4 of this utility model.

[0025] The components include: 1. Frosted glass panel; 2. Water layer; 3. Pull-out glass panel; 4. Transparent glass panel; 5. Water inlet pipe; 6. Water outlet; 7. Pull-out hole; 8. Flow guide pattern; 9. Screw; 10. Pull-out slot; 11. Catalyst coating; 12. Sealing ring; 13. Magnetic sheet; 14. Water pump; 15. Water tank; and 16. Cover. Detailed Implementation

[0026] The following is combined with Figures 1 to 9 The specific embodiments of this utility model will be described in detail below. In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0027] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0028] It should be noted that the circuit connections involved in this utility model all adopt conventional circuit connection methods and do not involve any innovation.

[0029] Example A retractable vertical flat-plate photocatalytic reactor, with dimensions of 20cm in length, 2.5cm in width, and 20cm in height, is entirely constructed of glass and is suitable for photocatalytic degradation treatment of wastewater. It includes a shell and a retractable glass plate 3. Figure 1 As shown, the shell is a five-sided sealed cavity with openings. Each side of the shell is a glass plate, and the glass plates are made of 5mm thick tempered glass. The glass plates are fixedly connected by corner plates and screws 9, and the corner plates and glass plates are sealed with sealing rings 12. The pull-out glass plate 3 is made of high-transmittance tempered glass, 5mm thick, and measures 24cm × 18cm. It is integrated with the 5mm thick cover 16, which measures 20cm × 1.5cm. Figure 4 As shown, the retractable glass panel 3 is inserted into the cavity of the housing through the top opening, and the retractable glass panel 3 is tightly attached to one side of the inner wall of the housing. The space between the inner wall of the housing and the retractable glass panel 3 is called the water layer 2. Figure 2 and Figure 3 As shown, the surface of the pull-out glass plate 3 facing the water layer 2 is coated with a catalyst coating 11. The catalyst coating 11 is in contact with the liquid flowing through the water layer 2. The top of the shell is provided with a water inlet pipe 5 that connects to the water layer 2, and the bottom of the shell is provided with a water outlet 6 that connects to the water layer 2.

[0030] like Figure 4 and Figure 5 As shown, the glass plate opposite the surface of the shell and the retractable glass plate 3 coated with catalyst coating 11 is a light-transmitting glass plate 4. The light-transmitting glass plate 4 is a high-transmittance glass plate. The two glass plates adjacent to the light-transmitting glass plate 4 are frosted glass plates 1. The frosted glass plates 1 on the side wall eliminate the strong light area at the edge, making the catalyst working load more balanced.

[0031] like Figure 4 As shown, symmetrical pull-out slots 10 are provided on the inner walls of both sides of the housing. The two sides of the pull-out glass plate 3 are slidably inserted into the pull-out slots 10 to guide the sliding of the pull-out glass plate 3.

[0032] like Figure 1 , Figure 2 and Figure 3 As shown, a cover 16 is provided at the top of one side of the pull-out glass panel 3. When the pull-out glass panel 3 is fully inserted, the cover 16 fits tightly against the opening at the top of the housing, sealing the opening and isolating the treated wastewater inside the housing from the air. A magnet 13 is attached to the bottom edge of the cover 16, and a metal strip is attached to the top of the translucent glass panel 4. The metal strip and the magnet 13 are positioned correspondingly. This is used to reinforce and seal the glass panel.

[0033] like Figure 1 and Figure 2 As shown, a pull-out hole 7 is provided at the center of the top of the pull-out glass panel 3. The pull-out hole 7 has an embedded anti-slip thread, which allows the pull-out glass panel 3 to be easily pulled out.

[0034] like Figure 2 and Figure 3 As shown, the surface of the retractable glass panel 3 facing the water layer 2 is equipped with multiple flow guiding patterns 8. Each flow guiding pattern 8 is a raised strip structure, and the height of the raised pattern is less than the gap height between the retractable glass panel 3 and the transparent glass panel 4. The multiple flow guiding patterns 8 are arranged side-by-side at equal intervals, with adjacent flow guiding patterns 8 staggered. Each flow guiding pattern 8 is an isosceles trapezoid with a height of 10mm ± 0.2mm, a width of 3.8mm ± 0.2mm, an inclination angle of 30°, and a top surface width of 0.4mm ± 0.2mm.

[0035] like Figure 2 and Figure 3 As shown, the catalyst coating 11 is adhered to an adhesive. Or solution coating and drying method It is worth noting that the surface of the flow guide pattern 8, which is also the surface of the pull-out glass plate 3, is coated with a catalyst coating 11. A flow guide groove is formed between two adjacent trapezoidal flow guide patterns 8. If the catalyst is lost, it will be blocked by the next flow guide pattern 8, thereby reducing the loss of catalyst with water.

[0036] When in use, the casing is placed at an angle so that the two inclined sides of the trapezoidal guide channel can have a larger contact area with sunlight after the catalyst is applied.

[0037] like Figure 8 and Figure 9 As shown, the inlet pipe 5 is connected to the water pump 14, and the water pump 14 is connected to the water tank 15. The flow rate of the inlet pipe 5 is less than the flow rate of the outlet pipe 6. This is to ensure that a negative pressure is formed inside the reactor and to prevent liquid from overflowing from the top.

[0038] The reactor operates as follows: Wastewater is pumped out of water tank 15 by water pump 14 and flows to water layer 2 through water inlet pipe 5, and flows down naturally along the 45° inclined pull-out glass plate 3.

[0039] Wastewater flows through the S-shaped guide lines 8, where the flow rate decreases. It fully wets and flows over the surface of the removable glass plate 3 loaded with the catalyst coating 11, while simultaneously receiving light. This effectively degrades and mineralizes the organic pollutants in the wastewater, allowing them to fully contact the catalyst and degrade the pollutants under the action of natural light.

[0040] The treated water flows to the bottom of water layer 2 and is discharged from outlet 6.

[0041] Remove the reactor, hold the pull-out hole 7 to pull out the pull-out glass plate 3, clean and recoat the catalyst, and then push it in along the pull-out slot 10.

[0042] The catalyst layer can be coated using one of the following two methods: First, the coating method for in-situ grown catalyst layers.

[0043] After cleaning and drying the removable glass plate 3, it is ultrasonically cleaned sequentially with acetone, ethanol, and deionized water. The catalyst is coated using the sol-gel method. Ethanol with a molar ratio of approximately 9 to the catalyst is thoroughly mixed with the catalyst and pH adjuster, and the pH value is set between 4 and 5 or 8 and 9 to prepare a dropwise solution. Then, twice the volume of ethanol is thoroughly mixed with glacial acetic acid and tetrabutyl titanate to prepare a stock solution. The dropwise solution is added to the stock solution at room temperature to form a uniform and transparent solution. After aging into a gel, it is coated onto the channels formed by the S-shaped flow guide lines 8 of the removable glass plate 3 by spin coating. The catalyst coating crystalline film is obtained under high-temperature annealing treatment.

[0044] Second, a coating method that uses a catalyst to directly coat the catalyst layer.

[0045] After cleaning and drying the removable glass plate 3, it is ultrasonically cleaned sequentially with acetone, ethanol, and deionized water. The catalyst is then coated using either an immersion method or a spraying method. The catalyst is dispersed in ethanol, and a binder, silica sol, is added. The removable glass plate 3 is then immersed in the ethanol solution containing the catalyst, or the ethanol solution containing the catalyst is uniformly sprayed onto the surface of the removable glass plate 3 using a spray gun. Subsequently, it is dried in an oven at 90–100°C, allowing the ethanol to evaporate and the catalyst to adhere to the surface of the removable glass plate 3, resulting in a crystalline thin film of catalyst coating.

[0046] like Figure 9 As shown, when the concentration of antibiotics in the wastewater being degraded is high, a recycling treatment method can be used.

[0047] The outlet 6 is connected to the water tank 15 via a hose. Wastewater from outlet 6 is returned to the water tank 15 via the hose and water pump 14, thus achieving continuous wastewater recycling and degradation. This recycling process continues until the expected pollutant removal rate or treatment endpoint is reached.

[0048] The above-disclosed embodiments are merely preferred embodiments of the present invention. However, the embodiments of the present invention are not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A pull-out vertical flat-plate photocatalytic reactor, characterized in that, include: The housing is a five-sided sealed cavity with an opening. Each side of the housing is a glass plate, and the glass plates are sealed together by a sealing ring (12). A retractable glass plate (3) is inserted into the cavity of the housing through the top opening of the housing, and the retractable glass plate (3) is in close contact with the inner wall of one side of the housing. The space between the inner wall of the housing and the retractable glass plate (3) is called the water layer (2). The surface of the retractable glass plate (3) facing the water layer (2) is coated with a catalyst coating (11). The glass plate body opposite to the surface of the housing and the retractable glass plate (3) coated with the catalyst coating (11) is a light-transmitting glass plate body (4). The two glass plates adjacent to the light-transmitting glass plate body (4) are frosted glass plates body (1). The top of the housing is provided with a water inlet pipe (5) that connects to the water layer (2), and the bottom of the housing is provided with a water outlet (6) that connects to the water layer (2).

2. The pull-out vertical flat-plate photocatalytic reactor according to claim 1, characterized in that, The inner walls on both sides of the housing are symmetrically provided with pull-out slots (10), and the two sides of the pull-out glass plate (3) are slidably inserted into the pull-out slots (10).

3. The pull-out vertical flat-plate photocatalytic reactor according to claim 1, characterized in that, The pull-out glass plate (3) has a cover (16) at one top side. The cover (16) fits tightly against the opening at the top of the housing to close the opening. A magnet (13) is attached to the bottom edge of the cover (16). A metal strip is attached to the top of the light-transmitting glass plate (4). The metal strip and the magnet (13) are positioned correspondingly.

4. The pull-out vertical flat-plate photocatalytic reactor according to claim 1, characterized in that, The pull-out glass plate (3) has a pull-out hole (7) at the center of its top.

5. The pull-out vertical flat-plate photocatalytic reactor according to claim 1, characterized in that, The surface of the retractable glass plate (3) facing the water layer (2) is provided with multiple flow guiding patterns (8). The flow guiding patterns (8) are raised strip structures, and the height of the raised strips is less than the gap height between the retractable glass plate (3) and the light-transmitting glass plate (4). The multiple flow guiding patterns (8) are arranged side by side, and the two adjacent flow guiding patterns (8) are staggered.

6. The pull-out vertical flat-plate photocatalytic reactor according to claim 1, characterized in that, The inlet pipe (5) is connected to the water pump (14), and the water pump (14) is connected to the water tank (15). The flow rate of the inlet pipe (5) is less than the flow rate of the outlet (6).

7. The pull-out vertical flat-plate photocatalytic reactor according to claim 6, characterized in that, The outlet (6) is connected to the water tank (15) via a hose.

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