A multi-layer structured packing

Abstract

The utility model provides a kind of multilayer structured packing, it is related to chemical product technical field, including tower body, the middle part of tower body is equipped with packing ferrule, the top of packing ferrule is equipped with top layer distribution, middle part is equipped with middle layer distribution, bottom is equipped with bottom layer distribution, top layer distribution, middle layer distribution and bottom layer distribution are closely adhered, and jointly constitute complete packing structure, the top of top layer distribution annular array has mounting bolt, the top of mounting bolt is connected with photocatalysis material layer, the middle part in top layer distribution is provided with temperature-sensitive polymer layer, the bottom in top layer distribution is connected with protective bottom plate, multilayer structured packing can according to the material concentration detected by concentration monitoring end detection at feed inlet, heating tube and cooling flow pipe are accurately regulated by programmable logic controller (PLC), change the temperature of temperature-sensitive polymer layer, simultaneously automatically adjust aperture size.

Description

Technical Field

[0001] This utility model relates to the field of chemical product technology, and in particular to a multi-layer structured packing. Background Technology

[0002] In the process of modern industrialization, multi-layer structured packing is a key element in chemical, environmental protection, and energy fields. In the chemical industry, distillation, as a core process for separating mixtures and obtaining high-purity products, relies heavily on multi-layer structured packing. In crude oil distillation towers in petrochemicals, packing with efficient multi-layer structured packing allows hydrocarbons with different boiling points to fully transfer mass and heat on the packing surface, accurately separating products such as gasoline, diesel, and kerosene, thus improving product quality and production efficiency while reducing energy consumption. In the carbon dioxide absorption process of the synthetic ammonia industry, multi-layer structured packing promotes full contact between the absorbent and carbon dioxide, improving absorption efficiency and ensuring the smooth operation of subsequent processes. The performance of multilayer structured packings, including their specific surface area, porosity, mass transfer efficiency, and mechanical strength, directly impacts the efficiency of the production process. High specific surface area and appropriate porosity promote mass transfer and increase reaction rates; good mechanical strength ensures the stability of the packing under complex operating conditions and extends equipment lifespan. In terms of product quality, efficient mass and heat transfer performance leads to more thorough separation and higher product purity. Furthermore, high-performance multilayer structured packings reduce energy consumption, lower production costs, and align with sustainable development requirements. However, traditional multi-layer structured packings have gradually revealed the following problems in long-term industrial practice: 1. In terms of material handling, most packings lack the ability to adaptively adjust to materials of different concentrations. For materials with large concentration fluctuations, conventional packings cannot flexibly adjust their structure to achieve the best processing effect, resulting in low processing efficiency and unstable product quality. For example, in the biopharmaceutical industry, the concentrations of raw materials vary from batch to batch, and traditional packings cannot adapt precisely, making it difficult to guarantee the separation efficiency and purity of the target product; 2. In the impurity purification stage, traditional packing materials lack self-cleaning capabilities. When impurities or pollutants adsorb onto the surface of the packing material, blockages easily occur, affecting mass transfer efficiency and reducing the operational stability of the equipment. Moreover, cleaning these impurities often requires significant manpower, resources, and time, increasing production costs. Taking packing materials in wastewater treatment equipment as an example, after long-term operation, a large number of organic pollutants and microorganisms will adhere to their surface, not only reducing the treatment effect but also requiring frequent shutdowns for cleaning and maintenance.

[0003] 3. From the perspective of energy conversion and utilization, traditional multi-layer structured packing generally lacks energy recovery capabilities. In many industrial processes, the flow of materials generates energy such as pressure differences, but this energy is usually wasted directly and not effectively utilized. This not only wastes energy but also increases the operating costs of enterprises. For example, in the distillation towers of petrochemical plants, a large amount of pressure energy is consumed with the flow of materials, without achieving energy recovery and reuse.

[0004] Therefore, a multi-layered structured filler is needed to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a multi-layered structured filler.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a multi-layer structured packing, comprising a tower body, wherein a packing sleeve is installed in the middle of the tower body, a top layer distributor is installed at the top of the packing sleeve, a middle layer distributor is installed in the middle, and a bottom layer distributor is installed at the bottom. The top layer distributor, the middle layer distributor, and the bottom layer distributor are tightly fitted together to form a complete packing structure. The top of the top layer distributor has a ring array of mounting bolts, and a photocatalytic material layer is snapped onto the top of the mounting bolts. A temperature-sensitive polymer layer is provided in the middle of the top layer distributor, and a protective base plate is snapped onto the bottom of the top layer distributor.

[0007] Preferably, the photocatalytic material layer, top layer distribution layer, temperature-sensitive polymer layer, and protective base plate are all circular, and each has a ring array of filter holes on its top. A triangular area is provided at the top of the temperature-sensitive polymer layer near the gap of the filter holes. An ultraviolet emitter is provided in the middle of the top of the tower body. A monitoring component is installed on one side of the top of the tower body. A feed inlet is provided on one side of the tower body near the top of the packing sleeve. A concentration monitoring end is installed at the end of the feed inlet. An edge ring is snapped onto the outside of the temperature-sensitive polymer layer.

[0008] Preferably, a first biomimetic layer is provided at the top of the middle layer, a second biomimetic layer is provided in the middle of the middle layer, and a supporting base is provided at the bottom of the middle layer. The tops of the first biomimetic layer, the second biomimetic layer, and the supporting base are all arranged in a circular array with openings.

[0009] Preferably, the openings on the first bionic layer are provided with fluff inside, and the openings on the second bionic layer are provided with fiber bundles outside, the fiber bundles being distributed radially.

[0010] Preferably, a pressure generator is installed at the top of the bottom material distribution area, an energy storage plate is installed at the bottom of the bottom material distribution area, and a power transmission line is provided between the middle of the bottom end of the pressure generator and the energy storage plate.

[0011] Preferably, the outer ring of the top of the pressure generator disk and the energy storage disk are arranged in a ring array with holes. The top of the pressure generator disk is provided with pressure heads on both sides. The bottom end of each pressure head is connected to a spring column. The bottom end of each spring column is threadedly connected to a hammer. Piezoelectric ceramic plates are installed on both sides of the bottom of the pressure generator disk. The bottom of the hammer is in contact with the piezoelectric ceramic plate. A rectifier is provided in the middle of the piezoelectric ceramic plates on both sides.

[0012] Preferably, the inner ring portion at the top of the piezoelectric ceramic sheet is the negative electrode, and the outer ring portion is the positive electrode. Connecting lines are welded to both the negative and positive electrodes at the top of the piezoelectric ceramic sheet. A storage battery is installed inside the energy storage disk, and the spring column and hammer are both located inside the pressure power generation disk.

[0013] Beneficial effects In this invention, the multi-layer structured packing, with its temperature-sensitive polymer layer, can precisely control the heating and cooling pipes via a programmable logic controller (PLC) based on the material concentration detected at the inlet concentration monitoring end, thereby altering the temperature of the temperature-sensitive polymer layer. When the material concentration is high, increasing the temperature causes the PNIPAM molecular chains to contract, increasing the pore size of the top layer and accelerating the material throughput; when the concentration is low, decreasing the temperature causes the molecular chains to extend, decreasing the pore size and increasing the contact time between the material and the packing, thus improving the processing efficiency. Compared to traditional packing, this effectively solves the problems of low processing efficiency and unstable product quality caused by fluctuations in material concentration. In industries such as biopharmaceuticals, which have high requirements for adaptability to material concentration, it can significantly improve the separation efficiency and purity of target products.

[0014] In this invention, the photocatalytic material layer is titanium dioxide (TiO2) loaded on a porous ceramic support. When the monitoring component detects that impurities on the top of the photocatalytic material layer exceed a threshold, whether automatically activated or remotely controlled by an operator to turn on the ultraviolet radiator, TiO2 generates electron-hole pairs under ultraviolet irradiation. These electrons react with water and oxygen to generate highly oxidizing hydroxyl radicals (·OH), decomposing organic pollutants and achieving self-cleaning. This characteristic solves the problem of insufficient self-cleaning ability of traditional packing materials, avoiding the impact of impurities clogging on mass transfer efficiency and equipment stability. Taking wastewater treatment equipment as an example, it reduces frequent downtime for maintenance due to impurity cleaning, lowers manpower, material, and time costs, and continuously ensures treatment effectiveness.

[0015] In this invention, the pressure-generating disk at the bottom of the material distribution layer converts the pressure generated by material flow into electrical energy through a unique pressure sensing and transmission structure. The pressure head, spring column, and hammer work together to cause the hammer to strike the piezoelectric ceramic plate, generating alternating current (AC). This AC is then converted to direct current (DC) by a rectifier, regulated by a voltage regulator, and stored in a lithium-ion battery within the energy storage disk. Compared to traditional packing materials, this invention achieves effective recovery and utilization of the energy generated by the pressure difference during material flow in industrial processes. For example, in petrochemical distillation towers, the recovered electrical energy can be used to power electronic equipment within the tower, reducing operating costs, improving energy efficiency, and aligning with sustainable development principles. Attached Figure Description

[0016] Figure 1 This is an overall structural diagram of the present invention; Figure 2 This is a diagram of the top layer material distribution structure of this utility model; Figure 3 This is a structural diagram of the temperature-sensitive polymer layer of this utility model; Figure 4 This is a diagram of the internal structure of the middle layer material distribution of this utility model; Figure 5 This is a diagram of the internal structure of the bottom layer of this utility model. Figure 6 This is a structural diagram of the pressure power generation component of this utility model; Figure 7 This is a schematic diagram of the structure of a piezoelectric ceramic sheet.

[0017] Legend: 1. Tower body; 2. Monitoring components; 3. Ultraviolet emitter; 4. Concentration monitoring end; 5. Feed inlet; 6. Top layer distribution; 7. Middle layer distribution; 8. Bottom layer distribution; 9. Packing sleeve; 10. Filter hole; 11. Photocatalytic material layer; 12. Mounting bolt; 13. Protective base plate; 14. Temperature-sensitive polymer layer; 15. Edge ring; 16. Triangular area; 17. First biomimetic layer; 18. Floss; 19. Opening; 20. Fiber bundle; 21. Second biomimetic layer; 22. Support base; 23. Pressure head; 24. Pressure generator; 25. Energy storage plate; 26. Spring column; 27. Hammer; 28. Piezoelectric ceramic plate; 29. ​​Rectifier; 30. Connection line. Detailed Implementation

[0018] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments and accompanying drawings. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described in the implementation plan without creative effort are all within the protection scope of this utility model.

[0019] The specific embodiments of this utility model are described below with reference to the accompanying drawings. Specific Implementation Example 1: Reference Figure 1-7 A multi-layer structured packing includes a tower body 1. A packing sleeve 9 is installed in the middle of the tower body 1. A top layer distributor 6 is installed at the top of the packing sleeve 9, a middle layer distributor 7 is installed in the middle, and a bottom layer distributor 8 is installed at the bottom. The top layer distributor 6, the middle layer distributor 7, and the bottom layer distributor 8 are tightly fitted together to form a complete packing structure. The top of the top layer distributor 6 has a ring array of mounting bolts 12. A photocatalytic material layer 11 is snapped onto the top of the mounting bolts 12. A temperature-sensitive polymer layer 14 is provided in the middle of the top layer distributor 6. A protective bottom plate 13 is snapped onto the bottom of the top layer distributor 6.

[0021] The packing structure in this equipment consists of a three-layer distribution structure. The top layer 6 is used for preliminary treatment, the middle layer 7 is used for filtration and adsorption, and the bottom layer 8 is used for energy conversion, converting pressure into electrical energy for storage to power some internal electronic devices.

[0022] The photocatalytic material layer 11, the top layer distribution 6, the temperature-sensitive polymer layer 14, and the protective base plate 13 are all circular, and each has a ring array of filter holes 10 on its top. A triangular area 16 is provided at the top of the temperature-sensitive polymer layer 14 near the gap of the filter holes 10. An ultraviolet emitter 3 is provided in the middle of the top of the tower body 1. A monitoring component 2 is installed on one side of the top of the tower body 1. An inlet 5 is provided on one side of the tower body 1 near the top of the packing sleeve 9. A concentration monitoring end 4 is installed at the end of the inlet 5. A side ring 15 is snapped onto the outside of the temperature-sensitive polymer layer 14.

[0023] The photocatalytic material layer 11 has a self-cleaning function. When impurities or pollutants are adsorbed on the filler surface, if photocatalysis is used and the ultraviolet light source is turned on, the electron-hole pairs generated by TiO2 react with the water and oxygen adsorbed on the surface to generate hydroxyl radicals (·OH), which have strong oxidizing properties and decompose organic pollutants. The monitoring component 2 is an impurity detection device used to monitor in real time whether there are impurities on the top of the first photocatalytic material layer 11. If there are impurities and the threshold is exceeded, a signal will be transmitted to the operator's mobile terminal. The operator can remotely control the ultraviolet radiator 3 to turn on and irradiate the bottom photocatalytic material layer 11. Alternatively, a self-driven system can be used, which automatically starts the ultraviolet radiator 3 after impurities are detected.

[0024] At the same time, such as Figure 3 The surface of the temperature-sensitive polymer layer 14 has a ring array of triangular regions 16. In actual applications, each triangular region 16 is equipped with a heating tube and a cooling pipe for rapid heating and cooling. The power lines of the heating tube and the circulation pipes of the cooling pipe are laid inside the edge ring 15. The specific arrangement is not limited here.

[0025] The temperature-sensitive polymer layer 14 is cooled and heated according to the concentration of the raw materials, thereby indirectly adjusting the pores at the top of the temperature-sensitive polymer layer 14.

[0026] The top of the middle layer material distribution 7 is provided with a first bionic layer 17, the middle part of the middle layer material distribution 7 is provided with a second bionic layer 21, and the bottom of the middle layer material distribution 7 is provided with a supporting base 22. The top of the first bionic layer 17, the second bionic layer 21 and the supporting base 22 are all arranged with openings 19 in a ring.

[0027] The openings 19 on the first bionic layer 17 are provided with fluff 18 inside, and the openings 19 on the second bionic layer 21 are provided with fiber bundles 20 outside, and the fiber bundles 20 are distributed radially.

[0028] The first biomimetic layer 17 and the second biomimetic layer 21 in the middle layer material distribution 7 both adopt the principle of plant biomimetic.

[0029] A pressure generator plate 24 is installed at the top of the bottom material distribution 8, and an energy storage plate 25 is installed at the bottom of the bottom material distribution 8. A power transmission line is provided between the middle of the bottom end of the pressure generator plate 24 and the energy storage plate 25.

[0030] Both the pressure generator plate 24 and the energy storage plate 25 have holes arranged in a ring around their top outer ring. The pressure generator plate 24 has pressure heads 23 on both sides of its top. The bottom of each pressure head 23 is connected to a spring column 26. The bottom of each spring column 26 is threadedly connected to a hammer 27. Piezoelectric ceramic plates 28 are installed on both sides of the bottom of the pressure generator plate 24. The bottom of the hammer 27 is in contact with the piezoelectric ceramic plate 28. A rectifier 29 is provided in the middle of the piezoelectric ceramic plates 28 on both sides.

[0031] The inner ring of the top of the piezoelectric ceramic sheet 28 is the negative electrode, and the outer ring is the positive electrode. Connecting lines 30 are welded to both the negative and positive electrodes at the top of the piezoelectric ceramic sheet 28. A storage battery is installed inside the energy storage disk 25. The spring column 26 and the hammer 27 are both located inside the pressure power generation disk 24. Specific Implementation Example 2: Reference Figure 1-7 This multi-layered structured packing is installed inside a tower body 1 made of corrosion-resistant, high-strength 316L stainless steel and fixed by a PTFE (polytetrafluoroethylene) packing sleeve 9. The packing structure consists of a tightly fitted top layer distribution 6, a middle layer distribution 7, and a bottom layer distribution 8. These parts work together to complete functions such as material processing, impurity purification, energy conversion, and storage. The tower body 1 is equipped with an ultraviolet emitter 3, a monitoring component 2, a feed inlet 5, and a concentration monitoring terminal 4 for monitoring and controlling the working status of the packing.

[0033] The top layer 6, middle layer 7, and bottom layer 8 are all made of polyetheretherketone (PEEK), a high-strength engineering plastic with good chemical stability, which can adapt to complex working conditions. The top layer 6 is connected to the photocatalytic material layer 11 by a stainless steel mounting bolt 12. The photocatalytic material layer 11 is composed of titanium dioxide (TiO2) supported on a porous ceramic carrier. Under ultraviolet irradiation, TiO2 generates electron-hole pairs, which react with water and oxygen to generate strong oxidizing hydroxyl radicals (·OH) to decompose organic pollutants, thus achieving self-cleaning.

[0034] Temperature control and pore size adjustment of thermosensitive polymer layer: Temperature Control Components and Principles: The top layer 6 contains a temperature-sensitive polymer layer 14 made of poly(N-isopropylacrylamide) (PNIPAM), with a lower critical temperature (LCST) of approximately 32°C. Temperature regulation is achieved through heating elements and cooling pipes installed within the outer ring 15. The heating elements utilize resistance wire heating. The control system, based on the material concentration signal detected by the concentration monitoring terminal 4, controls the current flowing through the resistance wire. The thermal effect of the current heats the resistance wire, thereby heating the temperature-sensitive polymer layer 14. Coolant, typically water or an aqueous ethylene glycol solution, circulates within the cooling pipes. The control system regulates the flow rate and velocity of the coolant to adjust the cooling effect. For example, increasing the flow rate and velocity increases rapid cooling, while decreasing them decreases slow cooling. The control system employs a programmable logic controller (PLC). It receives signals from the concentration monitoring terminal 4 and, based on preset program logic, outputs control signals to the power switch of the heating elements and the flow control valve of the cooling pipes, achieving precise temperature control.

[0035] Pore ​​size adjustment principle: The molecular structure of PNIPAM changes with temperature. When the temperature is below LCST, the hydrophilic groups on the PNIPAM molecular chains form hydrogen bonds with water molecules, causing the molecular chains to extend and reducing the pore size of the temperature-sensitive polymer layer 14. When the temperature is above LCST, the hydrophilic groups on the molecular chains dehydrate, causing the molecular chains to shrink and increasing the pore size. By precisely controlling the temperature, the pore size of the temperature-sensitive polymer layer 14 can be adjusted to meet the processing requirements of materials with different concentrations. For example, when the material concentration is high, increasing the temperature increases the pore size, accelerating the material throughput; when the material concentration is low, decreasing the temperature decreases the pore size, increasing the contact time between the material and the packing material, and improving the processing efficiency.

[0036] The bottom layer is protected by a stainless steel base plate 13 to prevent materials from damaging the underlying structure. Within the middle layer distribution 7, the top first biomimetic layer 17 and the middle second biomimetic layer 21 both utilize specially treated hydrophilic polyacrylonitrile (PAN) fibers to mimic the structure and function of plant roots. The first biomimetic layer 17 has fibrous hairs 18 inside its openings 19, while the second biomimetic layer 21 has radially distributed fiber bundles 20 outside its openings 19 for filtration and adsorption. The bottom is supported by a stainless steel support chassis 22.

[0037] Bottom-layer material distribution 8-pressure power generation conversion steps: Pressure Sensing and Transmission: When material flows through the bottom distribution layer 8, the pressure it generates acts on the pressure head 23. The pressure head 23 is connected to the spring column 26 and the hammer 27. The spring column 26 acts as a buffer and regulates the pressure, preventing excessive pressure from damaging subsequent components. The pressure is transmitted to the hammer 27 through the spring column 26, causing the hammer 27 to move downwards.

[0038] The piezoelectric effect generates current: The bottom of the hammer 27 is in contact with the piezoelectric ceramic plate 28 inside the pressure generating disk 24. When the hammer 27 is subjected to pressure and strikes the piezoelectric ceramic plate 28, the piezoelectric ceramic plate 28 generates electric charge due to the piezoelectric effect. The inner ring of the top of the piezoelectric ceramic plate 28 is the negative electrode, and the outer ring is the positive electrode. The separation of charges creates a potential difference between the positive and negative electrodes, thereby generating alternating current.

[0039] Current rectification and voltage regulation: The generated alternating current (AC) is transmitted to rectifier 29 via connecting line 30. Rectifier 29 uses a silicon-based semiconductor rectifier chip to convert AC to DC. To ensure stable voltage input to the lithium-ion battery in energy storage tank 25, a voltage regulator is installed between rectifier 29 and energy storage tank 25. The voltage regulator regulates the rectified DC voltage to prevent overvoltage or undervoltage from damaging the battery, thereby improving battery charging efficiency and lifespan.

[0040] Energy storage: The regulated DC power is input into the lithium-ion battery in the energy storage disk 25 for storage. The lithium-ion battery stores and releases electrical energy through the process of lithium ions intercalating and deintercalating between the positive and negative electrodes. When the electronic equipment in the tower needs power, the lithium-ion battery outputs electrical energy to power the equipment operation.

[0041] During operation, materials enter through the feed inlet 5, and the concentration monitoring end 4 detects the concentration and feeds it back to the control system. The monitoring component 2 monitors impurities in the photocatalytic material layer 11, and if the threshold is exceeded, it automatically notifies the operator or activates the ultraviolet radiator 3 for self-cleaning. At the same time, the temperature of the temperature-sensitive polymer layer 14 is adjusted according to the material concentration to change the pore size and optimize material processing. The middle layer distribution 7 performs filtration and adsorption, and the bottom layer distribution 8 realizes the conversion of pressure into electrical energy and its storage.

[0042] In summary: 1. In this device, the photocatalytic material layer 11 has a self-cleaning function. When impurities or pollutants are adsorbed on the surface of the filler, if photocatalysis is used and the ultraviolet light source is turned on, the electron-hole pairs generated by TiO2 react with the water and oxygen adsorbed on the surface to generate hydroxyl radicals (·OH) with strong oxidizing properties, which decompose organic pollutants. The monitoring component 2 is an impurity detection device used to monitor in real time whether there are impurities on the top of the first photocatalytic material layer 11. If there are impurities and the threshold is exceeded, a signal will be transmitted to the operator's mobile terminal. The operator can remotely control the ultraviolet radiator 3 to turn on and irradiate the bottom photocatalytic material layer 11. Alternatively, a self-driven system can be used, which means that the ultraviolet radiator 3 will be automatically activated after impurities are detected.

[0043] 2. The molecular structure of PNIPAM changes with temperature. When the temperature is below the LCST, the hydrophilic groups on the PNIPAM molecular chains form hydrogen bonds with water molecules, causing the molecular chains to extend and reducing the pore size of the temperature-sensitive polymer layer 14. When the temperature is above the LCST, the hydrophilic groups on the molecular chains dehydrate, causing the molecular chains to shrink and increasing the pore size. By precisely controlling the temperature, the pore size of the temperature-sensitive polymer layer 14 can be adjusted to meet the processing requirements of materials with different concentrations. For example, when the material concentration is high, increasing the temperature increases the pore size, accelerating the material throughput; when the material concentration is low, decreasing the temperature decreases the pore size, increasing the contact time between the material and the filler, and improving the processing efficiency.

[0044] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0045] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A multi-layer structured packing, comprising a tower body (1), characterized in that: The tower body (1) is equipped with a packing sleeve (9) in the middle. The top of the packing sleeve (9) is equipped with a top layer distribution (6), the middle layer distribution (7) is equipped with a middle layer distribution (7), and the bottom layer distribution (8) is equipped with a bottom layer distribution (8). The top layer distribution (6), the middle layer distribution (7) and the bottom layer distribution (8) are closely fitted together to form a complete packing structure. The top of the top layer distribution (6) has a ring array of mounting bolts (12). The top of the mounting bolts (12) is snapped with a photocatalytic material layer (11). The middle of the top layer distribution (6) is provided with a temperature-sensitive polymer layer (14). The bottom of the top layer distribution (6) is snapped with a protective base plate (13).

2. The multilayer structured packing according to claim 1, characterized in that: The photocatalytic material layer (11), top layer distribution (6), temperature-sensitive polymer layer (14), and protective base plate (13) are all circular, and each has a filter hole (10) arranged in a ring on the top. A triangular area (16) is provided at the gap of the filter hole (10) on the top of the temperature-sensitive polymer layer (14). An ultraviolet emitter (3) is provided in the middle of the top of the tower body (1). A monitoring component (2) is installed on one side of the top of the tower body (1). An inlet (5) is provided on one side of the tower body (1) near the top of the packing sleeve (9). A concentration monitoring end (4) is installed at the end of the inlet (5). A side ring (15) is snapped onto the outside of the temperature-sensitive polymer layer (14).

3. The multilayer structured packing according to claim 2, characterized in that: The top of the middle layer material distribution (7) is provided with a first bionic layer (17), the middle part of the middle layer material distribution (7) is provided with a second bionic layer (21), and the bottom of the middle layer material distribution (7) is provided with a supporting base (22). The top of the first bionic layer (17), the second bionic layer (21) and the supporting base (22) are all arranged with openings (19) in a ring.

4. The multi-layer structured packing according to claim 3, characterized in that: The first bionic layer (17) has fuzz (18) inside the openings (19), and the second bionic layer (21) has fiber bundles (20) outside the openings (19), which are radially distributed.

5. The multilayer structured packing according to claim 1, characterized in that: A pressure generator plate (24) is installed at the top of the bottom material distribution (8), and an energy storage plate (25) is installed at the bottom of the bottom material distribution (8). A power transmission line is provided between the middle of the bottom end of the pressure generator plate (24) and the energy storage plate (25).

6. The multilayer structured packing according to claim 5, characterized in that: The outer ring of the top of the pressure generator plate (24) and the energy storage plate (25) are both arranged with holes in a ring. The pressure generator plate (24) is provided with pressure heads (23) on both sides of the top. The bottom of the pressure head (23) is connected to a spring column (26). The bottom of the spring column (26) is threadedly connected to a hammer (27). Piezoelectric ceramic plates (28) are installed on both sides of the bottom of the pressure generator plate (24). The bottom of the hammer (27) is in contact with the piezoelectric ceramic plate (28). A rectifier (29) is provided in the middle of the piezoelectric ceramic plates (28) on both sides.

7. The multilayer structured packing according to claim 6, characterized in that: The inner ring of the top of the piezoelectric ceramic sheet (28) is the negative electrode and the outer ring is the positive electrode. A connecting line (30) is welded to both the negative and positive electrodes at the top of the piezoelectric ceramic sheet (28). A storage battery is installed inside the energy storage disk (25). The spring column (26) and the hammer (27) are both located inside the pressure power generation disk (24).

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