A top-illumination reactor

Abstract

The utility model discloses a top illumination reactor, including outer tube structure, the outer tube structure includes outer tube body, and the upper end side of outer tube body is connected with the air inlet pipe, and the upper and lower both ends of outer tube body are connected with upper butt joint and lower butt joint respectively, the light guide column is arranged in the inside of outer tube body, the diameter of light guide column is less than the cavity diameter of outer tube body, and the lower end of light guide column is provided with hopper, the utility model belongs to photocatalysis technical field, and the utility model discloses the purpose at in the existing technology two sides circular light window place poor tightness and the characterization test of being not conducive to catalyst recovery after, and the uneven distribution of liquid film will also influence the mass transfer efficiency problem. The technical effect for reaching is: through optimizing the illumination conduction and catalyst contact structure, the photocatalytic reaction efficiency is improved significantly, adopts the top illumination design cooperation with light block and conical structure, can disperse the light source into uniform large area illumination, ensures the light uniformity of catalyst bed layer.

Description

Technical Field

[0001] This utility model relates to the field of photocatalysis technology, specifically to a top-illuminated reactor. Background Technology

[0002] Gas-solid phase photocatalysis is a photocatalytic chemical reaction that takes place in a gaseous environment with a solid catalyst. It involves multiple research areas, including carbon dioxide reduction, degradation of gaseous pollutants, nitrogen fixation, and methane oxidation. To improve reaction efficiency, the design of the catalytic reactor needs to be adjusted and improved according to the characteristics of the reaction. The macroscopic factors affecting the experimental results of this type of reaction mainly include illumination conditions, catalyst loading conditions, and gas-solid contact conditions. Based on these factors, two main types of photocatalytic reactors have emerged: batch reactors and tubular reactors.

[0003] The side-illuminated tube reactor has a cross-shaped structure, with the catalyst loaded at the intersection. Gas enters from the top, flows through the catalyst in the reaction tube, and exits from the bottom. Illumination is applied to both sides or one side, but the sealing of the circular illumination windows on both sides is poor. The gas-phase photocatalytic reactor has a reactor structure and is illuminated from the top. However, the flow state of the gas after entering the reactor is not conducive to sufficient gas-solid contact. If the catalyst is loaded in the form of a coated liquid film, it is not conducive to the characterization and testing after catalyst recovery. Uneven distribution of the liquid film will also affect the mass transfer efficiency.

[0004] Therefore, a top-irradiation reactor is needed to improve the above problems. Utility Model Content

[0005] Therefore, this invention provides a top-irradiation reactor to solve the above-mentioned problems in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] According to a first aspect of the present invention, a top-irradiation reactor includes:

[0008] The outer tube structure includes an outer tube body, an air inlet pipe connected to the upper side of the outer tube body, and an upper docking part and a lower docking part connected to the upper and lower ends of the outer tube body, respectively.

[0009] A light guide column is set inside the outer tube. The diameter of the light guide column is smaller than the diameter of the inner cavity of the outer tube. A hopper is set at the lower end of the light guide column. A refractive block is set at the upper end of the hopper. A catalyst is filled between the refractive block and the hopper. The lower end of the hopper is a tubular structure and is filled with quartz wool. A gas guide pipe is connected to the lower end of the hopper.

[0010] A viewing window, wherein the end of the viewing window is mated with the upper docking part, and several sealing elements are provided between the viewing window and the upper end of the light guide column;

[0011] An exhaust component, which mates with the lower connecting part and the lower end of the air guide pipe.

[0012] Furthermore, the window component includes an upper docking component that mates with the upper docking portion. The upper docking component and the upper docking portion are connected by bolts. The lower surface of the upper docking component is provided with a lower protrusion that mates with the central cavity of the upper docking portion, and the upper surface of the upper docking component is provided with an upper protrusion. The upper end of the light guide column passes through the lower protrusion and the upper protrusion in sequence.

[0013] Furthermore, the upper end of the upper protruding post has several annular grooves for the installation of sealing elements.

[0014] Furthermore, the sealing element is a sealing ring.

[0015] Furthermore, the lower end of the refracting block is conical and is fitted into the upper end of the hopper. There is a gap between the lower end of the refracting block and the inner side of the upper end of the hopper, and the catalyst is filled in the gap.

[0016] Furthermore, the exhaust component includes a lower docking part that mates with the lower docking part. The lower docking part is fixedly connected to the lower docking part by bolts. A docking protrusion is provided in the middle of the upper surface of the lower docking part. The docking protrusion passes through the lower docking part and mates with the lower end of the air guide pipe.

[0017] Furthermore, both the lower surface of the upper docking member and the upper surface of the lower docking member are provided with protruding rings, and both the upper surface of the upper docking part and the lower surface of the lower docking part are provided with grooves that mate with the adjacent protruding rings.

[0018] This utility model has the following advantages:

[0019] 1. This utility model optimizes the light conduction and catalyst contact structure, significantly improving the efficiency of photocatalytic reaction. The top-illuminated design, combined with a refractive block and a conical structure, can disperse the light source into a uniform large-area illumination, ensuring uniform light exposure to the catalyst bed. The catalyst is filled through the gap formed by the hopper and the conical structure, which increases the filling amount and shortens the gas diffusion path, solving the problems of insufficient gas-solid contact and low mass transfer efficiency in traditional batch reactors. At the same time, it avoids the problems of difficult catalyst recovery and uneven distribution caused by liquid film coating.

[0020] 2. This utility model adopts an integrated seal of O-ring and nut window, and the top cover and reaction tube are connected by a metal hard seal. The bottom of the hopper is fixed with a graphite sleeve. The multiple sealing design effectively improves the sealing performance of the device and reduces the risk of gas leakage. The overall structure is resistant to high temperature and high pressure and can adapt to harsh reaction conditions, providing a stable and reliable experimental environment for gas-solid phase photocatalytic reaction and broadening its application scenarios in the fields of carbon dioxide reduction and degradation of gaseous pollutants. Attached Figure Description

[0021] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0022] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0023] Figure 1 This is a perspective view of a top-irradiation reactor provided for some embodiments of the present invention.

[0024] Figure 2 An explosion diagram of a top-irradiation reactor provided for some embodiments of this utility model.

[0025] Figure 3 This is a cross-sectional view of a top-irradiation reactor provided for some embodiments of the present invention.

[0026] Figure 4 A top-irradiation reactor provided for some embodiments of this utility model Figure 3 Enlarged view of point A in the middle.

[0027] In the diagram: 1. Outer tube body; 2. Inlet pipe; 3. Upper docking part; 4. Lower docking part; 5. Lower docking piece; 6. Outlet; 7. Upper docking piece; 8. Viewing window cap; 9. Viewing window; 10. Light guide column; 11. Hopper; 12. Air guide pipe; 13. Docking protrusion; 14. Protrusion ring; 15. Upper protrusion; 16. Lower protrusion; 17. Groove; 18. Sealing ring. Detailed Implementation

[0028] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0029] Example 1

[0030] like Figures 1 to 4 As shown, a top-illuminated reactor according to the first aspect of this utility model includes an outer tube structure, which includes an outer tube body 1. An air inlet pipe 2 is connected to the upper side of the outer tube body 1, and an upper docking part 3 and a lower docking part 4 are respectively connected to the upper and lower ends of the outer tube body 1. A light guide column 10 is disposed inside the outer tube body 1, and the diameter of the light guide column 10 is smaller than the diameter of the internal cavity of the outer tube body 1. A hopper 11 is disposed at the lower end of the light guide column 10, and a refractive block is disposed at the upper end of the hopper 11. A catalyst is filled between the refractive block and the hopper 11. The lower end of the hopper 11 is a tubular structure filled with quartz wool, and a gas guide pipe 12 is connected to the lower end of the hopper 11. A viewing window is fitted with the upper docking part 3 and a plurality of sealing elements are provided between it and the upper end of the light guide column 10. An exhaust component is fitted with the lower docking part 4, which is fitted with the lower end of the gas guide pipe 12.

[0031] In the above embodiments, it should be noted that the outer tube 1, as the core cavity of the reactor, provides a closed space for the gas-solid phase photocatalytic reaction. Its high temperature and high pressure resistance ensures that the reaction proceeds stably under extreme conditions. The inlet pipe 2 is connected to the external reaction gas, such as carbon dioxide and pollutant gas, and is uniformly introduced into the annular channel between the outer tube 1 and the light guide column 10, so that the gas flows downward along the pipe wall. The upper docking part 3 and the lower docking part respectively achieve sealed connection with the window and the exhaust part to form a complete reaction system. The hopper 11 supports the catalyst through quartz wool, while the gas guide pipe 12 guides the gas after the reaction to be discharged, realizing efficient contact between the gas and the catalyst and directional export of the reaction products.

[0032] The technical effects achieved by the above embodiments are as follows: the annular channel design of the outer tube 1 and the light guide column 10 realizes the uniform distribution and efficient mass transfer of the reaction gas; the combined structure of the hopper 11 and the refracting block optimizes the light energy utilization rate and the stability of the catalyst bed, ensuring the continuous and efficient operation of the gas-solid phase photocatalytic reaction under high temperature and high pressure conditions; the overall structure is sealed and reliable, and the gas flow path is reasonable, effectively improving the reaction efficiency and product selectivity.

[0033] Example 2

[0034] like Figures 1 to 4 As shown, a top-illuminated reactor includes all the contents of Example 1, and in addition, it includes a viewing window. The viewing window includes an upper docking member 7 that mates with the upper docking part 3. The upper docking member 7 and the upper docking part 3 are connected by bolts. A lower protrusion 16 that mates with the middle cavity of the upper docking part 3 is provided in the middle of the lower surface of the upper docking member 7, and an upper protrusion 15 is provided in the middle of the upper surface of the upper docking member 7. The upper end of the light guide column 10 passes through the lower protrusion 16 and the upper protrusion 15 in sequence.

[0035] The upper end of the upper protruding post 15 has several annular grooves for sealing components. The sealing components are sealing rings 18. When the bolts are tightened, the sealing rings 18 are compressed and undergo elastic deformation, filling the gap between the light guide post 10 and the upper protruding post 15, effectively preventing the reaction gas from leaking from the top, and at the same time fixing the light guide post 10 axially to prevent it from shifting during the reaction process.

[0036] The technical effects achieved by the above embodiments are as follows: the window component is fixed by bolt connection between the upper docking component 7 and the upper docking part 3; the cooperation between the lower protruding post 16 and the middle cavity of the upper docking part 3 ensures the coaxiality of the light guide post 10 and avoids light offset; the annular groove of the upper protruding post 15 and the sealing ring 18 form a double sealing structure.

[0037] Example 3

[0038] like Figures 1 to 4 As shown, a top-illuminated reactor includes all the contents of Example 1, plus a refractive block. The lower end of the refractive block is conical and is fitted into the upper end of the hopper 11. There is a gap between the lower end of the refractive block and the inner side of the upper end of the hopper 11. The catalyst is filled in the gap. The conical design of the refractive block can disperse the axial concentrated beam transmitted by the light guide column 10 into a 360° annular beam through the reflection of the conical surface, so that the light uniformly covers the catalyst bed in the annular gap. Compared with the traditional planar illumination structure, the illumination area is increased. The design of the annular gap makes the thickness of the catalyst bed uniform and controllable, reduces the dead angle of illumination, and at the same time, the gas flow path through the catalyst bed is short, reducing the mass transfer resistance, promoting full contact between the gas and solid phases, and improving the reaction efficiency.

[0039] The exhaust device includes a lower docking part 5 that mates with the lower docking part 4. The lower docking part 5 is fixedly connected to the lower docking part 4 by bolts. A docking protrusion 13 is provided in the middle of the upper surface of the lower docking part 4. The docking protrusion 13 passes through the lower docking part 4 and is inserted into the lower end of the gas guide pipe 12. The exhaust device achieves the sealing of the bottom of the reactor by bolting the lower docking part 5 to the lower docking part 4. The insertion and matching of the docking protrusion 13 and the gas guide pipe 12 ensures that the gas after the reaction flows into the gas guide pipe 12 in a directional manner, avoiding the gas from stagnating at the bottom of the reactor.

[0040] The lower surface of the upper docking member 7 and the upper surface of the lower docking member 5 are both provided with a protruding ring 14. The upper surface of the upper docking part 3 and the lower surface of the lower docking part 4 are both provided with a groove 17 that mates with the adjacent protruding ring 14. The engagement of the protruding ring 14 and the groove 17 forms a sealing structure.

[0041] The technical effect is as follows: when the bolt is tightened, the convex ring 14 is embedded in the groove 17. Through the close contact of the metal surfaces and the filling effect of the sealing coating, the gas leakage channel is effectively blocked. Compared with the planar seal, this structure increases the length of the gas permeation path. Combined with the extrusion deformation characteristics of the metal hard seal, the sealing performance can be improved, ensuring that the reactor is leak-free under high pressure.

[0042] Although the present invention has been described in detail above with general descriptions and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

[0043] The terms such as "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity of description and are not intended to limit the scope of implementation of this utility model. Any changes or adjustments to their relative relationships, without substantially altering the technical content, shall also be considered within the scope of implementation of this utility model.

Claims

1. A top-illumination reactor, characterized in that, include: The outer tube structure includes an outer tube body (1), an air inlet pipe (2) is connected to the upper side of the outer tube body (1), and the upper and lower ends of the outer tube body (1) are respectively connected to an upper docking part (3) and a lower docking part (4). A light guide column (10) is set inside the outer tube (1). The diameter of the light guide column (10) is smaller than the diameter of the inner cavity of the outer tube (1). A hopper (11) is set at the lower end of the light guide column (10). A refractive block is set at the upper end of the hopper (11). A catalyst is filled between the refractive block and the hopper (11). The lower end of the hopper (11) is a tubular structure and is filled with quartz wool. A gas guide pipe (12) is connected to the lower end of the hopper (11). The window component is fitted and connected to the upper docking part (3), and several sealing components are provided between the window end and the upper end of the light guide column (10); The exhaust component is connected to the lower docking part (4), which is connected to the lower end of the air guide pipe (12).

2. The overhead reactor of claim 1, wherein: The window component includes an upper docking part (7) that mates with the upper docking part (3). The upper docking part (7) and the upper docking part (3) are connected by bolts. The lower surface of the upper docking part (7) is provided with a lower protrusion (16) that mates with the cavity in the middle of the upper docking part (3). The upper surface of the upper docking part (7) is provided with an upper protrusion (15). The upper end of the light guide post (10) passes through the lower protrusion (16) and the upper protrusion (15) in sequence.

3. The overhead reactor of claim 2, wherein: The upper end of the upper protruding post (15) has several annular grooves for sealing components.

4. The overhead reactor of claim 3, wherein: The sealing element is a sealing ring (18).

5. The overhead reactor of claim 2, wherein: The lower end of the refracting block is conical and is fitted into the upper end of the hopper (11). There is a gap between the lower end of the refracting block and the inner side of the upper end of the hopper (11), and the catalyst is filled in the gap.

6. The overhead reactor of claim 5, wherein: The exhaust component includes a lower docking part (5) that mates with the lower docking part (4). The lower docking part (5) is fixedly connected to the lower docking part (4) by bolts. A docking protrusion (13) is provided in the middle of the upper surface of the lower docking part (4). The docking protrusion (13) passes through the lower docking part (4) and mates with the lower end of the air guide pipe (12).

7. The overhead reactor of claim 6, wherein: The lower surface of the upper docking member (7) and the upper surface of the lower docking member (5) are provided with protruding rings (14), and the upper surface of the upper docking part (3) and the lower surface of the lower docking part (4) are provided with grooves (17) that cooperate with the adjacent protruding rings (14).

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