Catalytic oxidation reactor

Abstract

The utility model discloses a catalytic oxidation reactor, which relates to the technical field of chemical production equipment and comprises a kettle body, a driving component, a self-suction stirring component, an ultraviolet lamp and a guide cylinder, the kettle body is provided with a liquid-phase feeding hole, a gas inlet and an overflow hole which are communicated with the interior of the kettle body; the driving assembly is arranged at the top end of the kettle body; the self-suction stirring assembly is arranged in the kettle body, is connected with the driving assembly and is used for introducing gas into the materials in the kettle body and stirring; the ultraviolet lamp is arranged in the kettle body in a penetrating manner; the guide cylinder is arranged in the kettle body, sleeves the periphery of the self-suction stirring assembly, is positioned between the ultraviolet lamp and the self-suction stirring assembly, and is used for preventing the influence on the catalytic reaction efficiency due to rapid attenuation of ultraviolet light caused by refraction of bubbles sucked by the self-suction stirring assembly. By means of the arrangement, efficient gas-liquid mass transfer can be achieved, meanwhile, bubbles are prevented from refracting ultraviolet light, the penetration distance of the ultraviolet light in a liquid phase is increased, and the catalytic efficiency of the ultraviolet light in the liquid phase is improved.

Description

Technical Field

[0001] This utility model relates to the field of chemical production equipment technology, and in particular to a catalytic oxidation reactor. Background Technology

[0002] Catalytic oxidation refers to the oxidation reaction between raw materials and oxidants in the presence of a catalyst to produce aldehydes, ketones, carboxylic acids, epoxides, peroxides, acyl chlorides, etc. Commonly used catalysts are variable-valence metal salts, which utilize electron transfer from variable-valence metals to generate free radicals from oxides at relatively low temperatures. The resulting low-valence metal ions are then oxidized to high-valence metal ions, and this cycle continues. The catalyst is not consumed during the reaction.

[0003] Based on the phase of the materials, catalytic oxidation reactions are divided into gas-phase catalytic oxidation and liquid-phase catalytic oxidation. Gas-phase catalytic oxidation generally uses a fixed-bed reactor, where a solid catalyst is packed inside. A mixture of the raw material and oxygen (or air, ozone, etc.) passes through the catalyst bed, and the oxidation reaction occurs on the catalyst surface. Liquid-phase catalytic oxidation, on the other hand, is a gas-liquid mass transfer controlled reaction. The diffusion and dissolution of air or oxygen are prerequisites for the oxidation reaction. During the reaction, the dissolution rate of air or oxygen is often the bottleneck, making improving the gas-liquid mass transfer rate a key design consideration for catalytic oxidation reactors.

[0004] Mechanical stirring is an effective method to improve gas-liquid mass transfer rates. Gas introduced from the bottom of the reactor is dispersed in the liquid phase by the stirrer, increasing the gas-liquid contact area; smaller bubbles result in a larger contact area. Self-priming stirring can significantly improve gas holdup because unreacted gas overflowing the liquid surface is re-drawn into the liquid phase by the stirrer, creating an internal gas circulation. Even with a small replenishment gas flow rate, a high gas holdup can be achieved, significantly improving the gas-liquid mass transfer rate. However, self-priming stirrers often operate at high speeds. If the reaction is a low-pressure oxidation reaction under ultraviolet photocatalysis, the glass tube outside the lamp is very prone to breakage under high-speed stirring, and a liquid filled with bubbles is also detrimental to ultraviolet light transmission.

[0005] Therefore, how to provide a reactor suitable for oxidation reactions using ultraviolet light as a catalyst is a technical problem that needs to be solved by those skilled in the art. Utility Model Content

[0006] The purpose of this invention is to provide a catalytic oxidation reactor that, while achieving efficient gas-liquid mass transfer, protects the ultraviolet lamp tube, increases the ultraviolet light transmission distance, and improves the catalytic efficiency of ultraviolet light.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A catalytic oxidation reactor, comprising:

[0009] The vessel body is equipped with a liquid feed inlet, an air inlet, and an overflow outlet that communicate with its interior.

[0010] The drive assembly, located at the top of the vessel, provides the power for stirring;

[0011] The self-priming stirring component is located inside the vessel and connected to the drive component. The self-priming stirring component is used to introduce gas into the material inside the vessel and stir it.

[0012] Ultraviolet lamps are installed inside the vessel to catalyze the reaction between the materials and dissolved gases inside the vessel.

[0013] The flow guide tube is installed inside the vessel body and is sleeved around the outer periphery of the self-priming stirring component. It is located between the ultraviolet lamp and the self-priming stirring component to prevent the refraction of bubbles introduced by the self-priming stirring component from affecting the transmission distance of ultraviolet light and thus affecting the catalytic reaction.

[0014] In one possible implementation, the vessel body is a cylindrical structure with an outwardly flared arc-shaped bottom. The liquid inlet is located at the center of the bottom of the vessel body, and the overflow outlet is located on the side wall of the vessel body.

[0015] In one possible implementation, the driving component includes:

[0016] The mixer is installed on the top of the vessel body via a sealing component. The output shaft of the mixer extends into the vessel body and is connected to the self-priming stirring assembly. The sealing component is used to prevent gas from escaping from the vessel body.

[0017] The motor, connected to the mixer via a speed reducer, provides the power for mixing.

[0018] In one possible implementation, the self-priming stirring assembly includes:

[0019] A hollow stirring shaft is connected to the output shaft of a mixer, and a gas inlet is provided at the connection point with the output shaft of the mixer. The hollow stirring shaft has a channel communicating with the gas inlet along its axial direction inside.

[0020] The self-priming impeller is located at the end of the hollow stirring shaft away from the gas inlet. The self-priming impeller has a through hole that connects to the inside of the hollow stirring shaft.

[0021] In one possible implementation, a gas guide tube is also included. The gas guide tube is disposed on the top inner wall of the vessel body and is sleeved around the outer periphery of the gas inlet. A gas inlet pipe is provided on the side wall of the gas guide tube. One end of the gas inlet pipe is connected to the gas inlet and the other end is connected to the air inlet.

[0022] In one possible implementation, the guide tube is installed into the vessel body by a number of support rods, one end of which is connected to the outer wall of the guide tube and the other end of which is connected to the inner wall of the vessel body.

[0023] In one possible implementation, two sets of support rods are provided, each located at the end of the guide tube.

[0024] In one possible implementation, the ultraviolet lamp is installed inside a glass tube that passes through the top of the vessel and extends into the interior of the vessel. The ultraviolet lamp is connected to a ballast.

[0025] In one possible implementation, the height of the overflow outlet is higher than the height of the guide tube.

[0026] In one possible implementation, the vessel body has a split structure, which includes a cylindrical straight cylinder, a flat cover plate located at the top of the straight cylinder, and a lower end cap located at the bottom of the straight cylinder.

[0027] Compared with the above-mentioned background technology, the catalytic oxidation reactor provided by this utility model has the following beneficial effects:

[0028] When a reaction is required, the liquid solution to be reacted is introduced into the reactor through the liquid inlet, while the gas to be dissolved is introduced into the reactor through the gas inlet. Under the action of the self-priming stirring component, the gas is pushed below the liquid surface and dissolved into the liquid under the stirring action. The liquid after dissolving the gas will react under the catalysis of the ultraviolet lamp. In this embodiment, a guide tube is provided between the ultraviolet lamp and the self-priming stirring component. In this way, firstly, the liquid under the high-speed stirring of the self-priming stirring component will not directly act on the ultraviolet lamp, but will collide with the inner wall of the guide tube, thereby preventing the high-speed liquid from damaging the ultraviolet lamp; secondly, the gas introduced below the liquid surface will produce A large number of bubbles are confined within the guide tube by the flow guide tube. Under the stirring action of the self-priming stirring component, the bubbles dissolve in the liquid. The liquid, after dissolving the gas, flows out from both ends of the guide tube. At this point, under the catalytic action of the ultraviolet lamp, a rapid reaction can occur. This prevents a large number of undissolved gases from generating numerous bubbles below the liquid surface, which would affect the irradiation of the ultraviolet lamp and thus its catalytic efficiency. In summary, by setting the guide tube to surround the self-priming stirring component, the flow path of the bubbles is limited, gas short-circuiting is avoided, and the direct impact of the high-speed rotating liquid on the ultraviolet lamp is isolated. This improves the gas-liquid mass transfer efficiency, protects the lamp tube, and enhances the photocatalytic efficiency. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the catalytic oxidation reactor structure provided in an embodiment of the present invention.

[0031] in:

[0032] 1-Bottle body; 2-Self-priming impeller; 3-Guide tube; 4-Hollow stirring shaft; 5-Overflow port; 6-Liquid surface; 7-Air inlet; 8-Sealing component; 9-Reducer; 10-Motor; 11-Agitator; 12-Ballast; 13-Glass tube; 14-Air guide tube; 15-Gas intake port; 16-Ultraviolet lamp; 17-Liquid phase feed port. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] In the description of this utility model, it should be understood that the terms "upper", "lower", "inner" and "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the position or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations of this utility model.

[0036] The purpose of this invention is to provide a catalytic oxidation reactor that achieves efficient gas-liquid mass transfer while protecting the ultraviolet lamp tube and improving the catalytic efficiency of ultraviolet light.

[0037] To achieve the above objectives, the present invention provides the following technical solution:

[0038] Please see Figure 1This embodiment provides a catalytic oxidation reactor, including: a vessel body 1, a drive assembly, a self-priming stirring assembly, an ultraviolet lamp 16, and a guide tube 3; the vessel body 1 is provided with a liquid inlet 17, an air inlet 7, and an overflow outlet 5 communicating with its interior; the drive assembly is located at the top of the vessel body 1 and is used to provide the power for stirring; the self-priming stirring assembly is located inside the vessel body 1 and connected to the drive assembly, and is used to introduce gas into the material inside the vessel body 1 and stir it; the ultraviolet lamp 16 is inserted inside the vessel body 1 and is used to catalyze the reaction between the material inside the vessel body 1 and the dissolved gas; the guide tube 3 is located inside the vessel body 1 and is sleeved around the outer periphery of the self-priming stirring assembly, located between the ultraviolet lamp 16 and the self-priming stirring assembly, and is used to prevent the refraction of bubbles introduced by the self-priming stirring assembly from affecting the transmission distance of ultraviolet light and thus affecting the catalytic reaction.

[0039] Specifically, the vessel body 1 has a cylindrical structure. The gas inlet 7 is located at the top of the vessel body 1, the liquid feed inlet 17 is located at the bottom of the vessel body 1, and the overflow port 5 is located on the side of the vessel body 1. The height of the overflow port 5 determines the height of the liquid that the vessel body 1 can hold. Therefore, the height of the overflow port 5 needs to be adjusted according to the actual situation. In addition, the overflow port 5 can not only discharge the solution that has completed the reaction, but also discharge undissolved gas.

[0040] In this embodiment, the ultraviolet lamp 16 is inserted into the vessel body 1 to facilitate the catalytic reaction of the solution after the gas is dissolved. Therefore, the insertion height should be at least greater than or equal to the length of the self-priming stirring assembly. This setting can improve the catalytic efficiency of the ultraviolet lamp 16.

[0041] In this embodiment, the self-priming stirring assembly is suspended inside the vessel body 1, and the guide tube 3 is also suspended on the outer periphery of the lower end of the self-priming stirring assembly to limit the movement path of the bubbles. However, it should be noted that neither the upper nor lower end of the guide tube 3 contacts the inner wall of the vessel body 1, and its height also needs to be adjusted according to the actual height of the overflow port 5 to ensure that the liquid after dissolving the gas can flow from the upper and lower ends of the guide tube 3 into the space between the guide tube 3 and the inner wall of the vessel body 1, thereby facilitating the catalytic reaction of the ultraviolet lamp 16.

[0042] When a reaction is required, the liquid solution to be reacted is introduced into the vessel 1 through the liquid inlet 17, and the gas to be dissolved is introduced into the vessel 1 through the gas inlet 7. Under the action of the self-priming stirring assembly, the gas is introduced to below the liquid surface 6 and dissolved into the liquid under the stirring action. The liquid after dissolving the gas will react under the catalysis of the ultraviolet lamp 16. In this embodiment, a guide tube 3 is provided between the ultraviolet lamp 16 and the self-priming stirring assembly. In this way, firstly, the liquid under the high-speed stirring of the self-priming stirring assembly will not directly act on the ultraviolet lamp 16, but will collide with the inner wall of the guide tube 3, thereby preventing the high-speed liquid from damaging the ultraviolet lamp 16; secondly, the gas introduced below the liquid surface 6... A large number of bubbles will be generated. The flow guide tube 3 restricts the flow of these bubbles, ensuring they are all contained within it. Under the stirring action of the self-priming stirring component, the bubbles dissolve in the liquid. The dissolved liquid flows out from both ends of the flow guide tube 3. At this point, under the catalytic action of the UV lamp 16, a rapid reaction can occur. This prevents a large amount of undissolved gas from generating numerous bubbles below the liquid surface 6, which would affect the irradiation of the UV lamp 16 and thus its catalytic efficiency. In summary, by setting the flow guide tube 3 to surround the self-priming stirring component, limiting the bubble flow path, avoiding gas short-circuiting, and isolating the high-speed rotating liquid from directly impacting the UV lamp 16, the gas-liquid mass transfer efficiency is improved, the lamp tube is protected, and the photocatalytic efficiency is enhanced.

[0043] In one possible implementation, the vessel body 1 has a cylindrical structure with an outwardly flared arc-shaped bottom. The liquid inlet 17 is located at the center of the bottom of the vessel body 1, and the overflow port 5 is located on the side wall of the vessel body 1.

[0044] Understandably, the cylindrical vessel body 1, combined with the arc-shaped bottom structure, is conducive to fluid circulation and material mixing; while the bottom central feed and side wall overflow work together to achieve smooth material flow during continuous operation.

[0045] In one possible implementation, the drive assembly includes: a mixer 11 and a motor 10; the mixer 11 is mounted to the top of the vessel body 1 via a sealing component 8, the output shaft of the mixer 11 extends into the vessel body 1 and is connected to a self-priming stirring assembly, and the sealing component 8 is used to prevent gas from escaping from the vessel body 1; the motor 10 is connected to the mixer 11 via a reducer 9 to provide the power for stirring.

[0046] Specifically, in this embodiment, the self-priming stirring assembly is mainly rotated by the mixer 11, and the power source of the mixer 11 is preferably the motor 10. The rotation of the motor 10 is easy to control and can provide stable rotational power. The mixer 11 is located at the top of the vessel body 1, and its output shaft passes through the top of the vessel body 1 and extends into the interior of the vessel body 1 to connect the self-priming stirring assembly. In order to prevent the gas inside the vessel body 1 from overflowing from the interface, a sealing component 8 is provided between the mixer 11 and the vessel body 1.

[0047] Of course, in this embodiment, the power source is preferably the motor 10, but other power sources can also be selected according to the actual situation, as long as they can stably provide power for the rotation of the hollow shaft.

[0048] In addition, a speed reducer 9 is provided between the motor 10 and the agitator 11. Understandably, the speed reducer 9 is actually a power transmission mechanism that can reduce the speed of the motor 10 and increase the output torque. When the self-priming agitator is agitating the liquid in the vessel 1, it will bear a large load. Therefore, the speed reducer 9 is needed to increase the output torque. This can prevent the motor 10 from being damaged due to excessive load, thereby extending the service life of the motor 10.

[0049] In one possible implementation, the self-priming stirring assembly includes: a hollow stirring shaft 4 and a self-priming impeller 2; the hollow stirring shaft 4 is connected to the output shaft of the mixer 11, and a gas inlet 15 is provided at the connection point with the output shaft of the mixer 11, and a channel communicating with the gas inlet 15 is provided inside the hollow stirring shaft 4 along its axial direction; the self-priming impeller 2 is provided at the end of the hollow stirring shaft 4 away from the gas inlet 15, and the self-priming impeller 2 is provided with a through hole communicating with the channel inside the hollow stirring shaft 4.

[0050] Specifically, a hollow stirring shaft 4 is vertically inserted inside the vessel body 1, that is, a hollow stirring shaft 4 is installed downward inside the vessel body 1. The stirrer 11 is located at the uppermost end of the vessel body 1, and its output shaft extends into the interior of the vessel body 1 and is directly connected to the hollow stirring shaft 4 to provide rotational power for the hollow stirring shaft 4. A self-priming impeller 2 is installed downward along the hollow stirring shaft 4. The self-priming impeller 2 is located at the lowermost end of the hollow stirring shaft 4, and the self-priming impeller 2 is provided with a through hole to connect the internal channel of the hollow stirring shaft 4 with the internal space of the vessel body 1. A gas inlet 15 is provided at the top of the hollow stirring shaft 4 so that the gas introduced into the vessel body 1 can be guided along the hollow stirring shaft 4 to below the liquid surface 6.

[0051] When operation begins, the gas to be reacted enters through the inlet 7, and the material to be reacted enters through the feed inlet. Simultaneously, the agitator 11 starts rotating, driving the hollow stirring shaft 4 to rotate. The self-priming impeller 2 also begins to rotate. The rotating self-priming impeller 2 generates negative pressure, drawing gas from the gas inlet 15 into the internal channel of the hollow stirring shaft 4. Under pressure, the gas is then discharged from the self-priming impeller 2, flowing below the liquid surface 6. This increases the gas content of the liquid in the vessel 1, resulting in a faster reaction rate and higher gas utilization.

[0052] In one possible implementation, a gas guide tube 14 is also included. The gas guide tube 14 is disposed on the top inner wall of the vessel body 1 and is sleeved on the outer periphery of the gas inlet 15. A gas inlet pipe is provided on the side wall of the gas guide tube 14. One end of the gas inlet pipe is connected to the gas inlet 15 and the other end is connected to the air inlet 7.

[0053] Understandably, to ensure that fresh gas introduced into the reactor body 1 is first introduced to below the liquid level 6, this embodiment includes a gas guide tube 14 at the gas inlet 15 of the hollow stirring shaft 4. The side wall of the gas guide tube 14 is connected to an inlet channel, one end of which directly corresponds to the gas inlet 15, and the other end extends out of the reactor body 1, serving as the gas inlet 7. This ensures that the liquid in the reactor preferentially dissolves the newly introduced gas each time, preventing the newly introduced gas from mixing with unreacted gas in the reactor body 1, thus reducing the concentration and consequently the dissolution rate, and consequently the reaction rate. The gas guide tube 14 guides external gas into the inlet, has a simple and reliable structure, ensures stable gas delivery, and prevents gas escape, thereby increasing the gas dissolution rate in the reactor and thus increasing the reaction rate.

[0054] In one possible implementation, the guide tube 3 is installed inside the vessel body 1 by a number of support rods, one end of which is connected to the outer wall of the guide tube 3 and the other end is connected to the inner wall of the vessel body 1.

[0055] Specifically, the support rods are all horizontally arranged, with one end connected to the outer wall of the guide tube 3 and the other end connected to the inner wall of the vessel body 1. The guide tube 3 can be erected by several evenly distributed support rods. It should be noted that the length of each support rod should be the same to ensure that the guide tube 3 is coaxially arranged with the vessel body 1 and the hollow stirring shaft 4. In general, the support rods fix the guide tube 3, making the structure stable and preventing the guide tube 3 from shifting due to fluid impact, thus ensuring the stability of the flow pattern.

[0056] In one possible implementation, two sets of support rods are provided, each located at the end of the guide tube 3.

[0057] In this embodiment, the supports at both ends of the guide tube 3 can further enhance the stability of the guide tube 3, making it suitable for high-speed stirring conditions.

[0058] In one possible implementation, the ultraviolet lamp 16 is installed inside the glass tube 13, which passes through the top of the vessel body 1 and extends into the interior of the vessel body 1. The ultraviolet lamp 16 is also connected to a ballast 12.

[0059] Understandably, the ultraviolet lamp 16 is placed inside the glass tube 13, which not only achieves sealing protection but also facilitates maintenance and replacement; the ballast 12 ensures stable ultraviolet light output.

[0060] In one possible implementation, the height of the overflow port 5 is higher than the height of the guide tube 3.

[0061] Understandably, this setup ensures that the liquid inside the vessel 1 circulates under the guidance of the guide tube 3, thereby increasing the reaction rate.

[0062] In one possible implementation, the vessel body 1 is a split structure, which includes a cylindrical straight cylinder, a flat cover plate located at the top of the straight cylinder, and a lower end cap located at the bottom of the straight cylinder.

[0063] Understandably, the modular design of the vessel body 1 facilitates the installation and maintenance of internal components, improving the manufacturability and ease of use of the equipment.

[0064] In summary, this application provides a photocatalytic oxidation reactor, which includes a closed vessel 1, a self-priming stirring assembly, and a UV lamp 16; the vessel 1 contains a cylindrical guide tube 3, a liquid inlet 17, an overflow port 5, an air inlet 7, a glass tube 13, a UV lamp 16, and an air guide tube 14; the self-priming stirring assembly includes a motor 10, a reducer 9, a sealing component 8, a hollow stirring shaft 4, a self-priming impeller 2, and a stirrer 11. The upper part of the hollow stirring shaft 4 has a gas inlet 15, which is covered by a semi-enclosed gas guide tube 14. The gas guide tube 14 is fixed to the inner wall of the top of the vessel body 1. When the stirrer 11 operates at a speed of 400~1500 rpm, the gas is drawn into the liquid surface 6 through the gas inlet 7, the gas inlet 15, the hollow stirring shaft 4, and the self-priming impeller 2 in sequence, and dispersed thereunder. The gas reacts with the materials in the liquid phase under ultraviolet photocatalysis. Unreacted gas re-enters the gas guide tube 14 and is re-drawn into the liquid for reaction. Under operating conditions, the gas intake of the self-priming impeller 2 must be greater than the gas flow rate entering the reactor; otherwise, some gas will be discharged without reaction. Generally, the gas intake of the self-priming impeller 2 under operating conditions is often several times the gas flow rate entering the reactor. The gas can circulate several times inside the reactor before being discharged, which helps to increase the gas content in the liquid phase, making the reaction rate faster and the gas utilization rate higher.

[0065] Through structural optimization, a cylindrical guide tube 3 is added inside the reactor, tightly surrounding the self-priming stirring impeller. This defines a flow path for the bubble-filled liquid, preventing short-circuiting. The liquid forms an up-and-down circulating flow inside and outside the guide tube 3 (within the annular gap between the guide tube 3 and the inner wall of the reactor body 1). Numerous glass tubes 13 equipped with ultraviolet lamps 16 are arranged within the annular gap between the guide tube 3 and the reactor. The flow pattern (i.e....) Figure 1 The morphology of the liquid circulating around the guide tube 3 is strictly controlled, while the breakage of the glass tube 13 under high-speed stirring is greatly reduced.

[0066] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0067] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0068] The embodiments provided by this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of this utility model.

Claims

1. A catalytic oxidation reactor, characterized by, include: The vessel body (1) is provided with a liquid feed inlet (17), an air inlet (7) and an overflow outlet (5) that are connected to its interior. A drive assembly, located at the top of the vessel body (1), is used to provide power for stirring; A self-priming stirring assembly is disposed inside the vessel body (1) and connected to the driving assembly. The self-priming stirring assembly is used to introduce gas into the material inside the vessel body (1) and stir it. An ultraviolet lamp (16) is installed inside the vessel body (1) to catalyze the reaction between the material and dissolved gas inside the vessel body (1); The guide tube (3) is set inside the vessel body (1) and is sleeved on the outer periphery of the self-priming stirring assembly. It is located between the ultraviolet lamp (16) and the self-priming stirring assembly to prevent the refraction of bubbles introduced by the self-priming stirring assembly from affecting the transmission distance of ultraviolet light and thus affecting the catalytic reaction.

2. The catalytic oxidation reactor according to claim 1, characterized in that The vessel body (1) is a cylindrical structure with an outwardly expanding arc-shaped bottom. The liquid inlet (17) is located at the center of the bottom of the vessel body (1), and the overflow port (5) is located on the side wall of the vessel body (1).

3. The catalytic oxidation reactor according to claim 2, characterized in that The driving component includes: A mixer (11) is installed on the top of the vessel body (1) via a sealing component (8). The output shaft of the mixer (11) extends into the vessel body (1) and is connected to the self-priming stirring assembly. The sealing component (8) is used to prevent gas from escaping from the vessel body (1). The motor (10) is connected to the mixer (11) via the reducer (9) to provide power for mixing.

4. The catalytic oxidation reactor according to claim 3, characterized in that The self-priming stirring assembly includes: A hollow stirring shaft (4) is connected to the output shaft of the mixer (11), and a gas inlet (15) is provided at the connection with the output shaft of the mixer (11). The hollow stirring shaft (4) has a channel connected to the gas inlet (15) along its axial direction inside. A self-priming impeller (2) is provided at the end of the hollow stirring shaft (4) away from the gas inlet (15). The self-priming impeller (2) is provided with a through hole that connects to the inside of the hollow stirring shaft (4).

5. The catalytic oxidation reactor according to claim 4, characterized in that It also includes a gas guide tube (14), which is disposed on the top inner wall of the vessel body (1) and sleeved on the outer periphery of the gas inlet (15). A gas inlet pipe is provided on the side wall of the gas guide tube (14), one end of which is connected to the gas inlet (15) and the other end is connected to the air inlet (7).

6. The catalytic oxidation reactor according to claim 1, characterized in that The guide tube (3) is installed inside the vessel body (1) by several support rods. One end of the support rod is connected to the outer wall of the guide tube (3), and the other end is connected to the inner wall of the vessel body (1).

7. The catalytic oxidation reactor according to claim 6, characterized in that The support rods are provided in two sets, and are respectively located at the ends of the guide tube (3).

8. The catalytic oxidation reactor according to claim 1, characterized in that The ultraviolet lamp (16) is installed inside the glass tube (13), which passes through the top of the vessel body (1) and extends into the interior of the vessel body (1). The ultraviolet lamp (16) is connected to a ballast (12).

9. The catalytic oxidation reactor according to claim 1, characterized in that, The height of the overflow port (5) is higher than the height of the draft tube (3).

10. The catalytic oxidation reactor according to claim 1, characterized in that The kettle body (1) is of a split structure, comprising a straight cylinder, a cover plate in a flat plate shape at the top end of the straight cylinder, and a lower head at the bottom end of the straight cylinder.

Images