Device and complete equipment for removing new pollutants through catalytic oxidation

Abstract

The invention relates to the technical field of new pollutant treatment, in particular to a device and complete equipment for removing new pollutants through catalytic oxidation, the device comprises a purification cylinder, a plurality of inlets and outlets are formed in the purification cylinder, and a driving cavity, a transportation cavity, an agent feeding cavity and a purification cavity are sequentially arranged in the purification cylinder from top to bottom; a first catalysis disc, a second catalysis disc and a main shaft are arranged in the purification cavity, the driving assembly is fixed to the main shaft in a sleeving mode and used for driving the main shaft to rotate, a plurality of drainage strips are arranged on the top face of the second catalysis disc, and a differential gear assembly is arranged at the bottom end of the main shaft; according to the invention, the multi-stage vortex type catalytic reaction cylinder is optimally designed, so that the influence of non-uniform flow of a to-be-purified object in the device and inconsistent reaction degrees on the mixing effect is reduced, dynamic adjustment of oxidant input and driving is realized, and efficient and sustainable catalytic oxidation decontamination is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of new pollutant treatment, and particularly relates to a device and a complete set of equipment for catalytic oxidation to remove new pollutants. Background Art

[0002] As an efficient advanced oxidation process (Advanced Oxidation Processes, AOPs), the catalytic oxidation technology activates oxidants such as persulfate, ozone or hydrogen peroxide to generate strongly oxidizing free radicals (such as hydroxyl radical OH - , sulfate radical SO4 2+ ), which can degrade refractory organic compounds without selectivity and has been widely used for the removal of new pollutants in recent years.

[0003] Conventional catalytic oxidation devices generally mainly rely on a supporting structure for bearing. The material to be purified is introduced at one end, and after a series of operations inside the supporting structure, the purified target is discharged. However, the design of existing catalytic oxidation devices often leads to uneven flow distribution of gas or liquid inside the device, making the material to be purified unable to fully contact with the catalyst, thus affecting the progress of the catalytic oxidation reaction. Moreover, due to the uneven flow, the reaction may be intense in some areas while insufficient in some other areas, resulting in a decrease in the overall purification efficiency. In addition, during the catalytic oxidation process, a large amount of energy is required to maintain the normal operation of the reaction system. This includes energy consumption in various links such as heating, stirring, and pumping. The high energy consumption directly leads to an increase in the operating cost. For large-scale applications of the catalytic oxidation technology, this is undoubtedly an important limiting factor.

[0004] Therefore, it is necessary to propose a device and a complete set of equipment for catalytic oxidation to remove new pollutants, reduce the influence on the mixing effect caused by the uneven flow of the material to be purified and the inconsistent reaction degree inside the device, and reduce the energy consumption of the device for maintaining the system reaction, so as to achieve efficient and sustainable catalytic oxidation decontamination. Summary of the Invention

[0005] To solve the above problems, the present invention provides a device and a complete set of equipment for catalytic oxidation to remove new pollutants, optimizes the design of a multi-stage vortex catalytic reaction cylinder, reduces the influence on the mixing effect caused by the uneven flow of the material to be purified and the inconsistent reaction degree inside the device, and realizes the dynamic adjustment of the oxidant input and driving, so as to achieve efficient and sustainable catalytic oxidation decontamination.

[0006] To achieve the above object, the technical solution of the present invention is as follows: A device for catalytic oxidation to remove emerging pollutants, comprising a purification cylinder. A plurality of inlets are provided at the top of the purification cylinder, and an outlet is provided at the bottom of the side wall of the purification cylinder. Inside the purification cylinder, a driving chamber, a transportation chamber, a dosing chamber, and a purification chamber are successively arranged from top to bottom. A driving assembly is provided in the driving chamber. A plurality of dosing ports are circumferentially provided on the outer side wall of the purification cylinder corresponding to the position of the dosing chamber; A first catalytic disk, a second catalytic disk, and a main shaft are provided in the purification chamber. The main shaft is located at the center of the purification cylinder, and the top end of the main shaft extends into the driving chamber and is rotatably connected to the inner top wall of the driving chamber. The driving assembly is sleeved and fixed on the main shaft. A plurality of impact channels corresponding to and communicating with the inlets are provided on the side wall of the driving chamber. The driving assembly converts the flow potential energy of the substance to be purified flowing out of a plurality of impact channels to drive the main shaft to rotate; The first catalytic disk is also sleeved and fixed on the main shaft and is located below the driving assembly. The second catalytic disk is located below the first catalytic disk and is sleeved on the main shaft. The second catalytic disk is rotatably connected to the side wall of the main shaft. Catalysts are coated on the surfaces of the first catalytic disk and the second catalytic disk. The first catalytic disk is of a spiral corrugated structure, and the second catalytic disk is of a disk-shaped structure and a plurality of drainage strips are provided on its top surface. The plurality of drainage strips are all concentric circular ring structures. A differential gear assembly is provided at the bottom end of the main shaft. When the main shaft rotates, the differential gear assembly drives the second catalytic disk to have a rotational speed difference with the first catalytic disk. At this time, the rotation of the first catalytic disk and the second catalytic disk causes secondary flows in different directions to be generated in the fluid collection in the purification chamber.

[0007] The technical principle of the above solution is as follows: Through the design of the inlets, outlets, and dosing ports, the input and output of the substance to be purified, and the input of the oxidant are respectively realized; through the driving chamber, transportation chamber, dosing chamber, and purification chamber successively arranged from top to bottom inside the purification cylinder, the division of regions with different functions is realized; through the driving assembly provided in the driving chamber, with the impact channels as the energy function supply, the rotational drive of the main shaft is realized; through the design of the main shaft, the synchronous rotation of the first catalytic disk and the main shaft is realized, and in cooperation with the differential gear assembly, the relative differential rotation of the second catalytic disk and the first catalytic disk is realized, forming irregular vortices in the purification chamber to improve the purification rate.

[0008] Adopting the above solution has the following beneficial effects: 1. In this solution, after the substance to be purified enters the purification cylinder, both the first catalytic disk and the second catalytic disk rotate with the main shaft, so that when the substance to be purified flows through the purification chamber, it can fully contact the first catalytic disk and the second catalytic disk coated with the catalyst, thereby improving the catalytic efficiency. The first catalytic disk is of a spiral corrugated structure, which increases the contact area between the fluid and the catalyst; the second catalytic disk is of a disk-shaped structure, and a plurality of concentric circular ring structure drainage strips are provided on its top surface to guide the fluid flow and promote fluid mixing, further optimizing the catalytic effect.

[0009] 2. In this solution, in the design of the differential gear assembly, when the main shaft rotates, the differential gear assembly drives the second catalytic disk and the first catalytic disk to generate a rotational speed difference, so that when the first catalytic disk and the second catalytic disk rotate, secondary flows in different directions can be generated, thereby enhancing the mixing effect of the fluid in the purification chamber. More uniform fluid mixing means that the contact opportunities between the substances to be purified and the catalyst are greatly increased, which not only improves the efficiency of the catalytic oxidation reaction, but also helps to reduce the generation of by-products during the reaction and improve the purity and yield of the target product. In addition, through the design of the shapes of the first catalytic disk and the second catalytic disk, the rotation of the first catalytic disk and the second catalytic disk itself can also promote the mixing of the fluid, making the contact between the substances to be purified and the catalyst more sufficient, further improving the efficiency of the catalytic oxidation reaction. With the improvement of the reaction efficiency, the time required for the purification process is shortened, and the processing capacity of the device is correspondingly enhanced, which is particularly important for application scenarios that require rapid treatment of a large amount of pollutants.

[0010] 3. Traditional driving methods, such as motors, engines, etc., usually require a large amount of electrical energy or fuel to provide power. However, the driving component in this solution uses the flow potential energy of the object to be purified as the power source, without additional energy consumption, reducing the energy consumption of the overall device and the maintenance and replacement costs of the equipment, lowering the operating cost, and enhancing the stability and reliability of the system. Even in the case of insufficient or interrupted external energy supply, the system can still operate normally, ensuring the continuity and stability of the purification process.

[0011] Furthermore, the differential wheel assembly includes a main gear fixedly connected coaxially with the main shaft. The main gear is rotatably connected to the inner bottom wall of the purification cylinder. A toothed ring is provided outside the main gear, and there is a gap between the toothed ring and the main gear. The main gear is evenly meshed with a number of secondary gears along its circumference. The bottom walls of the secondary gears are all rotatably connected to the inner bottom wall of the purification cylinder. The sides of the number of secondary gears away from the main gear are all meshed with the toothed ring. The top end of the toothed ring extends to the bottom of the second catalytic disk and is fixedly connected to the bottom wall of the second catalytic disk.

[0012] Beneficial effects: Through the meshing design of the main gear, the toothed ring and a number of secondary gears, the differential gear assembly drives the second catalytic disk and the first catalytic disk to generate a rotational speed difference, so that the fluid in the purification chamber forms secondary flows in different directions during rotation, enhancing the mixing effect of the fluid and improving the uniformity of the catalytic oxidation reaction, thereby ensuring the efficient progress of the catalytic oxidation reaction.

[0013] Furthermore, the driving component includes a turbine located in the driving chamber. The turbine is sleeved and fixed on the main shaft.

[0014] Beneficial effects: The driving component adopts a turbine design. The turbine is sleeved and fixed on the main shaft. By converting the flow potential energy of the object to be purified into mechanical energy to drive the rotation of the main shaft, it makes full use of the flow potential energy of the object to be purified, reduces the consumption of external energy, and achieves the goal of energy conservation and consumption reduction.

[0015] Furthermore, the shape of the driving chamber is an annular structure corresponding to the rotation trajectory of the turbine.

[0016] Beneficial effects: The design of the shape of the driving chamber helps to optimize the flow path of the fluid in the driving chamber, reduce the resistance during the fluid flow process, improve the smoothness of the fluid flow, and thus further improve the conversion efficiency of the turbine.

[0017] Furthermore, the top and bottom ends of the dosing chamber are respectively connected to the bottom end of the transportation chamber and the top end of the purification chamber. The dosing chamber is a frustum-shaped chamber with a smaller cross-sectional radius at the top than at the bottom. When the fluid to be purified flows through the transportation chamber and enters the dosing chamber, a negative pressure force is generated on the side wall of the dosing chamber, and the magnitude of this negative pressure force matches the rotational speed of the turbine.

[0018] Beneficial effects: The dosing chamber is designed as a frustum-shaped chamber with a smaller cross-sectional radius at the top than at the bottom, which helps to form a certain pressure difference during the dosing process, enabling the oxidant to flow into the purification chamber more smoothly and improving the dosing efficiency.

[0019] Furthermore, a number of dosing channels are provided on the side wall of the dosing chamber. One end of each of the number of dosing channels is connected to the dosing chamber, and the other end of each dosing channel is connected to a corresponding dosing port. The dosing channels are all used to suck the oxidant with the negative pressure force as the driving force.

[0020] Beneficial effects: The design of the number of dosing channels ensures that the oxidant can enter the purification chamber evenly from each dosing port, avoiding the problem of uneven distribution of the oxidant, and thus improving the efficiency of the catalytic oxidation reaction. In addition, when the fluid to be purified flows through the transportation chamber and enters the dosing chamber, a certain negative pressure force is generated on the side wall of the dosing chamber, and this negative pressure force matches the rotational speed of the turbine, that is, when the rotational speed of the turbine increases, due to the enhanced acceleration effect of the turbine on the fluid, the negative pressure force generated on the side wall of the dosing chamber will also increase accordingly. Conversely, when the rotational speed of the turbine decreases, the negative pressure force will also decrease accordingly, ensuring that the oxidant can flexibly adjust the suction volume according to the change of the turbine rotational speed, thereby achieving uniform and efficient suction of the oxidant.

[0021] Furthermore, both the first catalytic disk and the second catalytic disk are made of gradient porous metal materials.

[0022] Beneficial effects: The gradient porous metal material has a high porosity and excellent catalytic performance. The high porosity helps the reactants to fully contact with the catalyst, improving the catalytic efficiency; at the same time, the gradient porous structure also helps to reduce the diffusion resistance and improve the catalytic activity, ensuring the stability and reliability of the catalytic reaction.

[0023] Further, a first scraper and a second scraper are provided in the purification chamber from top to bottom. The height of the first scraper corresponds to the height of the first catalytic disk. One end of the first scraper is fixedly connected to the inner side wall of the purification cylinder, and the other end of the first scraper is rotatably connected to the outer side wall of the main shaft. A brush layer is fixedly connected to the bottom end of the first scraper. The height of the second scraper corresponds to the height of the second catalytic disk. The shape of the bottom wall of the second scraper corresponds to the circular ring corrugation of the outer top wall of the second catalytic disk. One end of the second scraper is fixedly connected to the outer side wall of the main shaft.

[0024] Beneficial effects: The first scraper and the second scraper respectively perform cleaning operations on the first catalytic disk and the second catalytic disk. The brush layer of the first scraper can remove the deposits on the surface of the catalytic disk and restore the activity of the catalyst; the second scraper can flexibly adjust the cleaning rate according to the rotation speed of the main shaft to ensure the cleanliness of the surface of the catalytic disk, which helps to extend the service life of the catalytic disk and improve the continuity and stability of the catalytic oxidation reaction.

[0025] Further, a recovery tank is provided on the inner side wall of the purification cylinder corresponding to the height of the second catalytic disk. The recovery tank is a planar spiral structure, and a sieve plate is fixedly connected in the recovery tank.

[0026] Beneficial effects: The design of the planar spiral structure of the recovery tank, combined with the sieve plate, helps to guide and collect the sediments pushed to the outer side wall by the centrifugal force, improve the impurity collection efficiency, and reduce the influence of impurities on the catalytic oxidation reaction.

[0027] A complete set of equipment for catalytic oxidation to remove new pollutants includes the above-mentioned device for catalytic oxidation to remove new pollutants, and includes several reagent storage tanks and connecting pipes. The reagent storage tanks are all communicated with the corresponding dosing ports, and the reagent storage tanks are all detachably connected to the outer side wall of the purification cylinder. The reagent storage tanks are all used to store the oxidants required in the catalytic oxidation reaction. Several connecting pipes respectively communicate with the outlet and several inlets. The connecting pipes communicating with the inlets are all used to transport and pump the material to be purified, and the connecting pipes communicating with the outlet are used to discharge the purified target. An electromagnetic valve is fixedly connected to the outlet, and the electromagnetic valve is signal-connected to a controller.

[0028] Beneficial effects: The modular design of the complete set of equipment facilitates combination and adjustment according to actual needs, improving the flexibility and adaptability of the equipment; at the same time, the design of automatically controlling the electric control valve through the controller reduces the error and labor intensity of manual operation and improves the purification work efficiency.

[0029] The additional aspects and advantages of the present invention will be partly given in the following description, partly will become obvious from the following description, or will be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of the device in the embodiment of the device for catalytic oxidation to remove new pollutants and the complete set of equipment of the present invention; Figure 2 Axial sectional view of the device in the embodiment of the device and complete set of equipment for catalytic oxidation to remove emerging pollutants of the present invention; Figure 3 Schematic diagram of the shapes of the first catalytic disk and the second catalytic disk of the device in the embodiment of the device and complete set of equipment for catalytic oxidation to remove emerging pollutants of the present invention; Figure 4 In the embodiment of the device and complete set of equipment for catalytic oxidation to remove emerging pollutants of the present invention Figure 2 Enlarged schematic diagram of the shape of the drive cavity at location A in Figure 5 Axonometric schematic diagram of the differential gear assembly inside the device in the embodiment of the device and complete set of equipment for catalytic oxidation to remove emerging pollutants of the present invention; Figure 6 Layout schematic diagram of the recovery tank inside the device in the embodiment of the device and complete set of equipment for catalytic oxidation to remove emerging pollutants of the present invention.

[0031] Reference numerals in the accompanying drawings of the specification include: 1, purification cylinder; 101, drive cavity; 102, transportation cavity; 103, chemical dosing cavity; 104, purification cavity; 2, inlet; 201, impact channel; 3, outlet; 4, chemical dosing port; 5, first catalytic disk; 6, second catalytic disk; 7, main shaft; 8, drainage strip; 9, main gear; 10, gear ring; 11, slave gear; 12, turbine; 13, chemical dosing channel; 14, first scraper; 15, second scraper; 16, brush layer; 17, recovery tank; 18, connecting pipe; 19, electromagnetic valve. Detailed implementation manners

[0032] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art without making creative efforts based on the embodiments of the present invention fall within the protection scope of the present invention.

[0033] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0034] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] The following is a further detailed description through specific embodiments: Example 1:

[0036] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 : A device for catalytic oxidation to remove emerging pollutants, comprising a purification cylinder 1. A plurality of inlets 2 are provided at the top end of the purification cylinder 1, and an outlet 3 is provided at the bottom of the side wall of the purification cylinder 1. Inside the purification cylinder 1, a driving chamber 101, a transportation chamber 102, a dosing chamber 103, and a purification chamber 104 are sequentially arranged from top to bottom. The transportation chamber 102 serves as a transportation channel for the substance to be purified after it enters the purification cylinder 1, and the dosing chamber 103 is used for dosing an oxidant, while the purification chamber 104 serves as a place for the substance to be purified to react with the oxidant.

[0037] In the process of using the existing device for catalytic oxidation to remove emerging pollutants, the design of one-way flow transportation and simple stirring and mixing mechanisms leads to uneven flow of the substances to be purified in the device. While affecting the mixing effect, it causes the phenomenon that the reaction is intense in some areas and insufficient in some areas. Therefore, a first catalytic disk 5, a second catalytic disk 6 and a main shaft 7 are provided in the purification chamber 104. The main shaft 7 is located at the center of the purification cylinder 1. The first catalytic disk 5 is sleeved and fixed on the main shaft 7. A driving component for driving the main shaft 7 to rotate is provided on the outer top wall of the purification cylinder 1. The second catalytic disk 6 is located below the first catalytic disk 5 and sleeved on the main shaft 7. The second catalytic disk 6 is rotationally connected to the side wall of the main shaft 7 through a bearing. Catalysts are coated on the surfaces of both the first catalytic disk 5 and the second catalytic disk 6. The first catalytic disk 5 is of a spiral corrugated structure, and the second catalytic disk 6 is of a disk-shaped structure and several flow guiding strips 8 are provided on its top surface. The several flow guiding strips 8 are all concentric circular ring structures. When the driving component drives the main shaft 7 to rotate, the first catalytic disk 5 rotates accordingly. Its spiral corrugated structure generates an axial secondary flow in the fluid, effectively disturbing the fluid and causing the substances to be purified that originally flowed in one direction to form a complex three-dimensional flow pattern in the purification chamber 104. Specifically, the geometric shape of the spiral corrugations guides the fluid to generate periodic acceleration and deceleration when flowing through the corrugated surface, thereby forming high-pressure and low-pressure regions at the protrusions and depressions of the corrugations respectively. The pressure difference drives the fluid to flow in a direction perpendicular to the main shaft 7, that is, the axial secondary flow, enhancing the mixing effect of the fluid and effectively eliminating the flow dead zones, ensuring that the substances to be purified can uniformly contact the catalyst on the surface of the first catalytic disk 5.

[0038] Specifically, a main gear 9 is coaxially and fixedly connected to one end of the main shaft 7 away from the driving component. The main gear 9 is rotatably connected to the inner bottom wall of the purification cylinder 1 through a rotating shaft. A gear ring 10 is provided outside the main gear 9. There is a gap between the gear ring 10 and the main gear 9. A plurality of driven gears 11 are evenly meshed with the main gear 9 along its circumferential direction. The bottom walls of the driven gears 11 are all rotatably connected to the inner bottom wall of the purification cylinder 1 through rotating shafts. One side of the plurality of driven gears 11 away from the main gear 9 is meshed with the gear ring 10. The top end of the gear ring 10 extends to the bottom of the second catalytic disc 6 and is welded to the bottom wall of the second catalytic disc 6. When the first catalytic disc 5 is driven by the main shaft 7 to rotate, through this design, the second catalytic disc 6 will also rotate. During the rotation process of the concentric circular ring-shaped drainage strip 8, it will induce the fluid to generate radial turbulence, directly acting on the fluid boundary layer, effectively destroying the laminar flow state in the boundary layer. The enhancement of the boundary layer disturbance will promote the mass transfer process between the fluid and the catalyst, enabling the catalyst to contact the material to be purified more fully, thereby improving the reaction efficiency. At the same time, the meshing state of the main gear 9, the gear ring 10 and the plurality of driven gears 11 makes the first catalytic disc 5 and the second catalytic disc 6 rotate at different speeds, resulting in a complex flow pattern of the fluid in the purification chamber 104. This chaotic mixing effect makes the flow path of the fluid in the purification chamber 104 unpredictable, thereby enhancing the mixing effect of the fluid, enabling each part of the fluid to contact and exchange more fully, helping to eliminate the concentration gradient, and improving the reaction uniformity.

[0039] During the catalytic oxidation process, a large amount of energy is required to maintain the normal operation of the reaction system. This not only increases the operating cost but also is not conducive to energy conservation and sustainable development, imposing certain limitations on the large-scale application and popularization of catalytic oxidation technology. Therefore, the designed driving component includes a turbine 12 located in the driving chamber 101. The turbine 12 is sleeved and fixed on the outside of the main shaft 7, specifically as Figure 4 shown. The shape of the driving chamber 101 is a circular ring structure corresponding to the rotation trajectory of the turbine 12. A plurality of impact channels 201 are provided in the side wall of the driving chamber 101. Both ends of each impact channel 201 are respectively communicated with the driving chamber 101 and the corresponding inlet 2. The opening of the impact channel 201 communicating with one side of the driving chamber 101 is tangent to the side wall of the driving chamber 101. When the material to be purified flows out of the impact channel 201, due to the certain speed and pressure of the material to be purified during the flow process, combined with the design of the position where the opening of the impact channel 201 is tangent to the side wall of the driving chamber 101, these energies are concentrated and directed to the blades of the turbine 12 when passing through the impact channel 201. Utilizing the flow potential energy of the discharged fluid, it is converted into mechanical energy, thereby driving the turbine 12 to rotate, reducing the energy consumption during the catalytic oxidation process. Compared with the traditional device that requires external energy input to maintain the operation of the reaction system, this design is more energy-efficient and conducive to energy conservation and sustainable development.

[0040] The top and bottom of the dosing chamber 103 are respectively connected to the bottom of the transport chamber 102 and the top of the purification chamber 104. The dosing chamber 103 is a frustum-shaped chamber with a smaller cross-sectional radius at the top than at the bottom. The design of this shape makes the dosing chamber 103 similar to a Venturi tube. When the substance to be purified flows from the transport chamber 102 into the dosing chamber 103, the gradient expansion of the cross-sectional area of the dosing chamber 103 causes the conversion of fluid kinetic energy into potential energy, and the flow rate of the fluid will gradually decrease, increasing the residence time of the substance to be purified in the purification chamber 104 and improving the purification efficiency of the catalytic oxidation reaction. A number of dosing channels 13 are provided on the side wall of the dosing chamber 103. One end of each of the number of dosing channels 13 is connected to the dosing chamber 103, and the other end of each dosing channel 13 is connected to a dosing port 4. The dosing ports 4 are all opened at positions on the outer side wall of the purification cylinder 1 corresponding to the height of the dosing chamber 103. When the substance to be purified flows from the transport chamber 102 through the dosing chamber 103 to the purification chamber 104, when the substance to be purified flows through the throat (i.e., the contraction section with the smallest cross-sectional area), the fluid flow rate reaches the peak value. According to Bernoulli's equation, the static pressure in this area is reduced below the ambient pressure at this time, forming a stable negative pressure area. The special thing is that this negative pressure environment is not evenly distributed throughout the dosing chamber 103, but is concentrated in the side wall area of the dosing chamber 103, especially at the inlet end of the dosing channel 13. Since the dosing channels are radially distributed on the side wall surface of the frustum-shaped chamber, when a pressure gradient appears inside the chamber, the low-pressure area at the side wall forms a pressure difference channel with the external environment through the dosing channel 13. At this time, the dosing port 4, as an interface connecting to the external environment, automatically sucks fresh oxidant into the dosing chamber 103 under the drive of the pressure difference, forming a continuous material supply mechanism, realizing the precise and directional dosing of the oxidant, and further enhancing the mass transfer efficiency through fluid mechanics control, enabling the catalytic oxidation reaction to obtain more sufficient reaction conditions in the purification chamber 104.

[0041] In addition, in the design of the mechanism for sucking the oxidant under negative pressure, when the amount of the substance to be purified put into the purification chamber 104 increases, the acting force on the blades of the impact turbine 12 will also increase correspondingly, that is, the rotation speed of the turbine 12 increases. The increase in the rotation speed of the turbine 12 combined with the increase in the flow rate of the substance to be purified transported by the transport chamber 102 causes the flow rate of the substance to be purified passing through the dosing chamber 103 to increase. Therefore, the negative pressure generated on the side wall of the dosing chamber 103 due to the throat negative pressure effect will also increase, so the amount of fresh oxidant sucked increases. Thus, the mechanism for sucking the oxidant under negative pressure can realize the automatic adjustment of the intake air volume (i.e., the dosing amount of the oxidant), ensuring the smooth progress of the catalytic oxidation reaction, effectively avoiding the waste and over-dosing of the oxidant, and improving the energy efficiency and environmental protection performance of the device.

[0042] Embodiment 2:

[0043] The difference from Example 1 is that both the first catalytic disk 5 and the second catalytic disk 6 are made of gradient porous metal materials; due to the different porosity and pore structures of the gradient porous metal materials, their high porosity characteristics provide a larger loading space for the catalyst, that is, more catalysts can be loaded on the first catalytic disk 5 and the second catalytic disk 6, improving the efficiency of the catalytic reaction. At the same time, the pore structure of the gradient porous metal materials can promote the full contact between the reactants and the catalyst, increasing the collision chance between the reactant molecules and the active sites of the catalyst, thereby improving the catalytic activity, facilitating the rapid transmission of reactants and products, reducing the diffusion resistance, and further enhancing the catalytic efficiency. In addition, the pore structure of the gradient porous metal materials can ensure the uniform distribution of the catalyst on each catalytic disk, helping to reduce the local overheating and coking phenomena of the catalyst, and improving the stability and reliability of the catalytic reaction.

[0044] Example 3:

[0045] As shown in the attached Figure 2 and Figure 6 As shown, the difference from Example 2 is that a first scraper 14 and a second scraper 15 are provided in the purification chamber 104 from top to bottom. The height of the first scraper 14 corresponds to the height of the first catalytic disk 5. One end of the first scraper 14 is welded to the inner side wall of the purification cylinder 1, and the other end of the first scraper 14 is rotatably connected to the outer side wall of the main shaft 7 through a bearing. A brush layer 16 is adhesively fixed to the bottom end of the first scraper 14. When the main shaft 7 drives the first catalytic disk 5 to rotate, the first scraper 14 rotates relative to the first catalytic disk 5, and the brush layer 16 at its bottom end is in close contact with the surface of the first catalytic disk 5. Since the wastewater contains hardness ions (such as calcium, magnesium, etc.) and other impurities, these substances deposit on the surface of the catalyst, forming a barrier layer, seriously affecting the activity and efficiency of the catalyst. The design of the brush layer 16, during the rotation process, the brush layer 16 performs a brushing operation on the surface of the first catalytic disk 5, penetrates into the tiny gaps on the surface of the catalyst, and brushes off the deposited hardness ions and impurities one by one, thereby restoring the original surface state of the catalyst.

[0046] The height of the second scraper 15 corresponds to the height of the second catalytic disc 6, the shape of the bottom wall of the second scraper 15 corresponds to the annular corrugation of the outer top wall of the second catalytic disc 6, and one end of the second scraper 15 is welded to the outer wall of the main shaft 7. When the main shaft 7 rotates, due to the speed difference between the rotation of the second catalytic disc 6 and the rotation of the main shaft 7, the second scraper 15 can produce relative rotation with the second catalytic disc 6 (i.e., the relative rotation of the main shaft 7 and the gear ring 10). At this time, the second scraper 15 fits tightly to the surface of the second catalytic disc 6, so as to clean more effectively; and the speed of the relative rotation depends on the speed difference between the main shaft 7 and the second catalytic disc 6. When the rotation rate of the main shaft 7 increases, the speed difference will also increase accordingly, resulting in the relative rotation speed between the second scraper 15 and the second catalytic disc 6 to increase, and the cleaning rate will increase accordingly. Conversely, when the rotation rate of the main shaft 7 decreases, the speed difference decreases, the relative rotation speed slows down, and the cleaning rate also decreases. This mechanism enables the second scraper 15 to flexibly adjust the cleaning rate according to the rotation rate of the main shaft 7 to meet different work requirements.

[0047] In addition, a recovery groove 17 is provided on the inner wall of the purification cylinder 1 at a height corresponding to the second catalytic disk 6. Figure 6 As shown, the recovery groove 17 is a planar threaded structure, and a sieve plate is welded inside the recovery groove 17. When the main shaft 7 drives the second catalytic disc 6 and the second scraper 15 rotating relative to it to rotate, centrifugal force is generated. The centrifugal force acts on the scraped sediment, causing it to tend to move toward the outer wall of the purification cylinder 1, and the planar threaded structure of the recovery groove 17 can guide and collect the sediment pushed to the outer wall by the centrifugal force. The sediment can enter the recovery groove 17 more quickly and accurately, be intercepted and collected by the sieve plate, thereby improving the collection efficiency of the precipitated impurities, reducing the residual sediment in the purification cylinder 1, and reducing the difficulty and cost of subsequent treatment.

[0048] Embodiment 4:

[0049] As attached Figure 2 As shown, a complete set of equipment for catalytic oxidation to remove new pollutants includes the device for catalytic oxidation to remove new pollutants described in Examples 1-3, including a plurality of storage tanks and connecting pipes 18, the storage tanks are all connected to the corresponding dosing ports 4, the storage tanks are all detachably connected to the outer wall of the purification cylinder 1 through a snap structure, the storage tanks are all used to store the oxidant required for the catalytic oxidation reaction, the plurality of connecting pipes 18 are respectively connected to the outlet 3 and the plurality of inlets 2, the connecting pipes 18 connected to the inlet 2 are all used to transport and pump the object to be purified, and the connecting pipe 18 connected to the outlet 3 is used to discharge the purified target object, the outlet 3 is fixedly connected with an electromagnetic valve 19 by bolts, the electromagnetic valve 19 signal is connected to a controller, the controller is used to drive the opening and closing of the electromagnetic valve 19 according to the purification signal, so as to realize automatic control of the purification process, the modular complete set of equipment is designed, the components are tightly connected and easy to disassemble, and it is convenient to combine and adjust according to actual needs.

[0050] Obviously, the above embodiments are merely examples for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or alterations can be made based on the above description. It is not necessary and impossible to enumerate all implementation manners here. And the obvious changes or alterations derived therefrom still fall within the protection scope of the present invention.

Claims

1. A device for removing new pollutants by catalytic oxidation, comprising a purification cylinder (1), a plurality of inlets (2) being provided at the top of the purification cylinder (1), and an outlet (3) being provided at the bottom of the side wall of the purification cylinder (1), characterized in that: A driving chamber (101), a transport chamber (102), a dosing chamber (103) and a purification chamber (104) are sequentially arranged in the purification cylinder (1) from top to bottom. A driving assembly is arranged in the driving chamber (101). A plurality of dosing openings (4) are circumferentially formed on the outer wall of the purification cylinder (1) at positions corresponding to the dosing chamber (103). A first catalytic disc (5), a second catalytic disc (6) and a main shaft (7) are provided in the purification chamber (104); the main shaft (7) is located at the center of the purification cylinder (1); the top end of the main shaft (7) extends into the driving chamber (101) and is rotatably connected to the inner top wall of the driving chamber (101); the driving component is sleeved and fixed on the main shaft (7); a plurality of impact channels (201) corresponding to and connected to the inlet (2) are provided on the side wall of the driving chamber (101); the driving component converts the flow potential energy of the to-be-purified matter flowing out of the plurality of impact channels (201) to drive the main shaft (7) to rotate; The first catalytic disc (5) is also sleeved and fixed on the main shaft (7) and is located below the driving assembly. The second catalytic disc (6) is located below the first catalytic disc (5) and sleeved on the main shaft (7). The second catalytic disc (6) is rotatably connected to the side wall of the main shaft (7). The surfaces of the first catalytic disc (5) and the second catalytic disc (6) are both coated with catalysts. The first catalytic disc (5) is a spiral corrugated structure. The second catalytic disc (6) is a disc-shaped structure and has a plurality of drainage strips (8) on its top surface. The plurality of drainage strips (8) are all concentric annular structures. A differential gear assembly is provided at the bottom end of the main shaft (7). When the main shaft (7) rotates, the differential gear assembly drives the second catalytic disc (6) and the first catalytic disc (5) to generate a rotation speed difference. At this time, the rotation of the first catalytic disc (5) and the second catalytic disc (6) causes the fluid collection in the purification chamber (104) to generate secondary flows in different directions.

2. The device for removing new pollutants by catalytic oxidation according to claim 1, characterized in that: The differential wheel assembly comprises a main gear (9) coaxially fixedly connected to the main shaft (7), the main gear (9) being rotatably connected to the inner bottom wall of the purification cylinder (1), a gear ring (10) being provided on the outer side of the main gear (9), a gap being provided between the gear ring (10) and the main gear (9), a plurality of slave gears (11) being uniformly meshed along the circumference of the main gear (9), the bottom walls of the slave gears (11) being rotatably connected to the inner bottom wall of the purification cylinder (1), a plurality of slave gears (11) being meshed with the gear ring (10) on the side away from the main gear (9), and a top end of the gear ring (10) extending to the bottom of the second catalytic disk (6) being fixedly connected to the bottom wall of the second catalytic disk (6).

3. The device for removing new pollutants by catalytic oxidation according to claim 2, characterized in that: The drive assembly comprises a turbine (12) located in the drive chamber (101), and the turbine (12) is sleeved and fixed on the main shaft (7).

4. The device for removing new pollutants by catalytic oxidation according to claim 3 is characterized in that: The shape of the driving chamber (101) is a circular ring structure corresponding to the rotation trajectory of the turbine (12).

5. The device for removing new pollutants by catalytic oxidation according to claim 4, characterized in that: The top and bottom ends of the dosing chamber (103) are respectively connected to the bottom end of the transport chamber (102) and the top end of the purification chamber (104); the dosing chamber (103) is a truncated cone-shaped chamber with a top cross-sectional radius smaller than a bottom cross-sectional radius; when the flow to be purified enters the dosing chamber (103) through the transport chamber (102), a negative pressure force is generated on the side wall of the dosing chamber (103), and the magnitude of the negative pressure force matches the rotation speed of the turbine (12).

6. The device for removing new pollutants by catalytic oxidation according to claim 5, characterized in that: A plurality of dosing channels (13) are provided on the side wall of the dosing chamber (103); one end of each of the dosing channels (13) is connected to the dosing chamber (103); the other end of each of the dosing channels (13) is connected to a corresponding dosing port (4); and each of the dosing channels (13) is used to absorb an oxidant using negative pressure as a driving force.

7. The device for removing new pollutants by catalytic oxidation according to claim 6, characterized in that: The first catalytic disc (5) and the second catalytic disc (6) are both made of gradient porous metal material.

8. The device for removing new pollutants by catalytic oxidation according to claim 7, characterized in that: A first scraper (14) and a second scraper (15) are provided in the purification chamber (104) from top to bottom. The height of the first scraper (14) corresponds to the height of the first catalytic disk (5). One end of the first scraper (14) is fixedly connected to the inner wall of the purification cylinder (1). The other end of the first scraper (14) is rotatably connected to the outer wall of the main shaft (7). The bottom end of the first scraper (14) is fixedly connected to a brush layer (16). The height of the second scraper (15) corresponds to the height of the second catalytic disk (6). The shape of the bottom wall of the second scraper (15) corresponds to the circular corrugation of the outer top wall of the second catalytic disk (6). One end of the second scraper (15) is fixedly connected to the outer wall of the main shaft (7).

9. The device for removing new pollutants by catalytic oxidation according to claim 8, characterized in that: A recovery groove (17) is provided on the inner side wall of the purification cylinder (1) at a height corresponding to that of the second catalytic disc (6); the recovery groove (17) is a planar threaded structure, and a sieve plate is fixedly connected inside the recovery groove (17).

10. A complete set of equipment for catalytic oxidation removal of new pollutants, comprising the device for catalytic oxidation removal of new pollutants according to any one of claims 1 to 9, characterized in that: The invention comprises a plurality of storage tanks and connecting pipes (18), wherein the storage tanks are all connected to corresponding dosing ports (4), and the storage tanks are all detachably connected to the outer wall of the purification cylinder (1). The storage tanks are all used to store the oxidant required for the catalytic oxidation reaction. The plurality of connecting pipes (18) are respectively connected to the outlet (3) and the plurality of inlets (2). The connecting pipes (18) connected to the inlets (2) are all used to transport and pump the object to be purified, and the connecting pipes (18) connected to the outlet (3) are used to discharge the purified target object. The outlet (3) is fixedly connected to an electromagnetic valve (19), and the electromagnetic valve (19) is signal-connected to a controller.

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