A composite scrubbing tower liner and process for making same

Abstract

The application discloses a kind of washing tower composite lining and its manufacturing process, it is related to industrial anticorrosion equipment technical field, including: the inner wall of washing tower matrix is polished and handled;With the ethylene base ester resin primer material compatible with inner lining layer resin is applied to the surface of the matrix after processing is brushed;Using hand paste wet layer process, carbon fiber reinforced material is laid on primer layer layer by layer, and resin glue solution is brushed;The prepared bisphenol A epoxy vinyl ester resin is repeatedly brushed on the surface of inner lining layer, and glass fiber reinforced material is laid to discharge bubble, and it is solidified at room temperature;After solidification, the composite lining is post-cured;Face coating is made on the outer side of structure layer, and the ability of resistance to scouring and grinding is enhanced;After solidification, the composite lining is finished, whether there is bubble, crack is checked, and pinhole detection is carried out to inner lining layer.The application is designed by double-layer composite structure, corrosion resistance and structural strength are considered, material cost is reduced, and the service life of washing tower lining is prolonged.

Description

Technical Field

[0001] This invention relates to the field of industrial corrosion protection equipment technology, and in particular to a composite lining for a washing tower and its manufacturing process. Background Technology

[0002] Scrubbers are core equipment in industrial waste gas purification and treatment, widely used in industries such as thermal power, steel, chemical, and metallurgy to remove harmful substances such as sulfur dioxide, hydrogen chloride, and nitrogen oxides from flue gas. The internal working environment of a scrubber is extremely harsh: flue gas temperature fluctuates greatly, with inlet temperatures reaching 200℃, and the operating temperature inside the tower typically between 150 and 180℃. The medium contains highly corrosive components such as sulfuric acid, hydrochloric acid, hypochlorous acid, and hydroxides, and is also subject to the corrosive effects of high-temperature mixed alkaline solutions. This places extremely high demands on the corrosion resistance, heat resistance, and impermeability of the equipment's lining materials.

[0003] Currently, commonly used anti-corrosion materials for scrubbing tower linings mainly fall into three categories: rubber linings, which are generally prefabricated and require on-site installation. Due to the penetration and diffusion of water vapor and anions, rubber linings are prone to blistering, cracking, and detachment, leading to failure and subsequent corrosion of the steel substrate. Furthermore, mechanical damage, construction problems, and high temperatures inside the tower can also cause rapid rubber failure. Glass flake coatings, applied on-site, are prone to micro-cracks and detachment due to mismatched thermal expansion coefficients at high temperatures. While the vinyl ester resin used in glass flake linings has good resistance to hydrofluoric acid, the glass flakes used as filler are corroded by hydrofluoric acid. Traditional fiberglass structural layers are often made using a single resin combined with glass fiber reinforcement. These structural layers are in direct contact with the medium, resulting in limited corrosion resistance and impermeability. Under harsh conditions such as high-temperature mixed alkaline solutions, the glass fibers are easily corroded, affecting the service life of the lining.

[0004] Therefore, this invention proposes a washing tower lining material and manufacturing process that combines excellent corrosion resistance, heat resistance, impermeability and good cost performance. Summary of the Invention

[0005] This invention provides a composite lining for a scrubbing tower and its manufacturing process. Through a double-layer composite structure design, it balances corrosion resistance and structural strength, while reducing material costs and extending the service life of the scrubbing tower lining.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: This invention provides a composite lining for a scrubbing tower, comprising: The composite lining is installed on the inner wall of the metal or concrete matrix of the washing tower, and consists of an inner lining layer and a structural layer from the inside to the outside. The inner lining is made of phenolic epoxy vinyl ester resin and carbon fiber reinforced material, and is in direct contact with the corrosive medium inside the scrubbing tower. The structural layer is made of bisphenol A epoxy vinyl ester resin and glass fiber reinforcement material, and is set on the outside of the inner liner to provide support and protection for the inner liner.

[0007] A manufacturing process for a composite lining of a scrubbing tower includes: S1, Grind the inner wall of the washing tower base to keep the surface of the base dry, clean and smooth; S2, a base coating is formed by brushing a vinyl ester resin primer material compatible with the inner liner resin onto the treated substrate surface; S3 employs a hand lay-up wet process, laying carbon fiber reinforcement material layer by layer on the base layer and then applying a phenolic epoxy vinyl ester resin adhesive with added curing agent and accelerator. S4, lay a layer of glass fiber reinforcement material on the surface of the inner lining, brush on the prepared bisphenol A epoxy vinyl ester resin adhesive, so that the resin fully wets the fiber layer and removes air bubbles, and cure at room temperature for 24 hours. S5, after the composite lining has been cured, it is post-cured at 80~120℃ for 24 hours to improve the crosslinking density and comprehensive performance of the resin and maintain the degree of curing to more than 95%. S6, a surface coating is made on the outside of the structural layer, using a vinyl ester resin coating containing wear-resistant fillers to enhance the composite lining's resistance to erosion and wear; S7. After the composite lining has been cured, it is trimmed to remove burrs and uneven parts, check for bubbles and cracks, repair them if necessary, and use an electric spark tester to perform pinhole detection on the lining layer to ensure that there are no penetrating defects and to ensure overall sealing.

[0008] The beneficial effects of the technical solution provided by this invention include at least the following: The lining of this invention, made of phenolic epoxy vinyl ester resin and carbon fiber composite, exhibits outstanding corrosion resistance to complex media such as humid chlorine gas, high-temperature sulfuric acid waste gas, and chlorides. Furthermore, carbon fiber exhibits excellent chemical stability in high-temperature alkaline environments. The combination of the two forms a highly efficient anti-corrosion barrier. In addition, the lining of this invention has a high cross-linking density, enabling it to operate stably for a long time in high-temperature flue gas environments, thus meeting the requirements for use in scrubbing towers under temperature fluctuation conditions.

[0009] This invention employs a composite structure of carbon fiber reinforcement and glass fiber reinforcement. While ensuring corrosion resistance, it uses low-cost glass fiber to bear the structural strength, which significantly reduces material costs and is more economical than the all-carbon fiber solution.

[0010] The inner lining and structural layers of this invention are made of a vinyl ester resin system with good compatibility, resulting in tight interlayer bonding and no risk of delamination. Bisphenol A epoxy vinyl ester resin has excellent glass fiber wettability and high elongation, resulting in high bonding strength with glass fiber. Furthermore, the hand lay-up process can adapt to the construction requirements of various irregular structures of the washing tower, without being limited by equipment size and shape, and is particularly suitable for on-site fabrication and inner lining construction of large-diameter equipment.

[0011] This invention ensures the density and overall sealing of the lining through step-by-step pasting, layer-by-layer degassing, and post-curing treatment, effectively avoiding the failure problems such as bubbling, cracking, and detachment that are common in traditional linings. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a wall thickness distribution diagram of the composite lining of the washing tower provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of the washing tower provided in an embodiment of the present invention; Figure 3 This is an unfolded view of the inner diameter of the scrubbing tower provided in an embodiment of the present invention; Figure 4 This is a flowchart of the manufacturing process of the composite lining of the washing tower provided in the embodiment of the present invention. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0015] Example 1: Please refer to Figure 1 This is a wall thickness distribution diagram of the composite lining of the washing tower provided in an embodiment of the present invention.

[0016] A composite lining for a scrubbing tower is disposed on the inner wall of a metal or concrete substrate of the scrubbing tower. The composite lining includes an inner lining layer and a structural layer; a primer layer is disposed between the inner lining layer and the substrate, and a topcoat layer is disposed on the outside of the structural layer.

[0017] Please refer to Figure 2 This is a schematic diagram of the structure of a washing tower provided in an embodiment of the present invention.

[0018] The inner lining is in direct contact with the corrosive media inside the scrubbing tower; the structural layer provides support and protection for the inner lining; the base coating enhances the adhesion between the inner lining and the substrate; and the top coating enhances the lining's resistance to erosion and wear.

[0019] Please refer to Figure 3 This is an unfolded view of the inner diameter of the scrubbing tower provided in an embodiment of the present invention.

[0020] Inner lining: The inner lining is made of a composite of phenolic epoxy vinyl ester resin and carbon fiber reinforcement.

[0021] The phenolic epoxy vinyl ester resin selected is a high-crosslinking-density phenolic epoxy vinyl ester resin, used to improve the heat resistance and corrosion resistance of the inner lining. The basic type of this resin has a heat distortion temperature of up to 155℃ and a glass transition temperature of 180℃, allowing for long-term stable operation at 180℃ and withstanding short-term temperature shocks of 300℃ for 2-3 minutes. This series of resins exhibits outstanding corrosion resistance to complex media such as those containing moist chlorine, high-temperature sulfuric acid waste gas, and chlorides, while also demonstrating excellent solvent and oxidation resistance.

[0022] Carbon fiber reinforced materials include one or more of carbon fiber cloth, carbon fiber felt, and chopped strand mat. Carbon fiber has excellent resistance to high-temperature alkaline corrosion, maintains stable performance in high-temperature alkaline environments, and is not easily corroded.

[0023] Structural layers: The structural layer is made of bisphenol A epoxy vinyl ester resin and glass fiber reinforcement.

[0024] The bisphenol A epoxy vinyl ester resin selected is a standard general-purpose bisphenol A epoxy vinyl ester resin, used to improve the acid, alkali and salt resistance of the structural layer, and to enhance the elongation, toughness and glass fiber wettability of the structural layer.

[0025] Glass fiber reinforced materials include one or more of alkali-free glass fiber cloth and chopped glass fibers. Glass fiber is used to improve mechanical strength and reduce usage costs.

[0026] Primer and topcoat: The primer layer uses a vinyl ester resin primer material that is compatible with the liner layer to enhance the adhesion between the liner and the substrate.

[0027] The topcoat is made of vinyl ester resin containing wear-resistant fillers to enhance the composite liner's resistance to erosion and wear. The wear-resistant filler is selected from silicon carbide, alumina, and ceramic microspheres.

[0028] The thickness of the primer and topcoat is preferably 0.3 to 0.5 mm.

[0029] This embodiment is for a carbon steel-based scrubbing tower with an inner diameter of 2.8m and a height of 12m, and a composite lining is made on its inner wall.

[0030] Please refer to Figure 4 A flowchart illustrating the manufacturing process of the composite lining for a washing tower provided in an embodiment of the present invention.

[0031] S1, Substrate treatment: The inner wall of the carbon steel substrate is sandblasted to Sa2.5 grade, with a surface roughness of 70~100μm, and the surface is kept dry, clean and smooth.

[0032] S2, Primer Coating Preparation: Apply a vinyl ester resin primer material compatible with the inner lining resin to the substrate surface. The primer coating thickness is controlled at 0.3mm. After the primer is surface dry, proceed to the next step of construction.

[0033] S3, Inner Liner Fabrication: The inner lining is made of a composite of phenolic epoxy vinyl ester resin and carbon fiber reinforcement. The phenolic epoxy vinyl ester resin used is a high cross-linking density type, and the carbon fiber reinforcement consists of carbon fiber cloth and chopped strand mat.

[0034] The construction environment should be at a temperature of 25℃ and a relative humidity of 60%, with the site being clean, dry, and well-ventilated. Add methyl ethyl ketone peroxide (MEK) as a curing agent and cobalt naphthenate as an accelerator to the phenolic epoxy vinyl ester resin. The amounts are 100 parts phenolic epoxy vinyl ester resin, 1.2 parts MEK, and 0.5 parts cobalt naphthenate (MEK) by weight. Stir well and allow to stand to defoam.

[0035] A hand lay-up wet process was employed. First, a layer of carbon fiber cloth was laid on top of the base layer, followed by a brush application of the prepared phenolic epoxy vinyl ester resin. The resin was then used to evenly impregnate the carbon fiber layer with a brush, removing any air bubbles. Next, chopped strand mat of carbon fiber was laid, and this lay-up process was repeated layer by layer until the inner lining layer reached a thickness of 5 mm. Each layer was laid before the next layer gelled to ensure interlayer bonding. After laying, the mixture was cured at room temperature for 24 hours, achieving a cure rate of 75%.

[0036] S4, Structural Layer Fabrication: The structural layer is composed of bisphenol A epoxy vinyl ester resin and glass fiber reinforcement. Standard general-purpose bisphenol A epoxy vinyl ester resin is selected, and alkali-free glass fiber cloth and chopped glass fibers are used as the glass fiber reinforcement.

[0037] Add methyl ethyl ketone peroxide (MEK) as a curing agent and cobalt naphthenate as an accelerator to bisphenol A epoxy vinyl ester resin. The amounts are 100 parts bisphenol A epoxy vinyl ester resin, 1.2 parts MEK, and 0.5 parts cobalt naphthenate by weight. Stir well and let stand to defoam.

[0038] A layer of alkali-free fiberglass cloth is laid on the surface of the inner lining, and then coated with bisphenol A epoxy vinyl ester resin adhesive, ensuring that the resin fully wets the fiber layer and removes air bubbles. Short fiberglass chopped strands are then laid, and this process is repeated until the structural layer reaches a thickness of 20mm. The structural layer is constructed in four layers, each approximately 5mm thick, to avoid excessive heat generation or incomplete curing due to excessive thickness at once. After the paste is applied, it is allowed to cure at room temperature for 24 hours.

[0039] S5, Post-curing treatment: The composite lining after curing is subjected to post-curing treatment using a stepped heating method: 80℃ for 2 hours, 100℃ for 2 hours, and 120℃ for 20 hours, for a total post-curing treatment of 24 hours, achieving a curing degree of 96%.

[0040] S6, Topcoat preparation: Apply a 0.3mm thick vinyl ester resin wear-resistant coating containing silicon carbide micropowder to the outside of the structural layer and cure at room temperature for 24 hours to improve the lining's resistance to erosion and wear.

[0041] S7, Finishing and Inspection: Finish the cured composite lining by removing burrs and uneven areas, and check for defects such as bubbles and cracks. Use an electric spark tester to perform pinhole testing on the lining layer; no penetrating defects were found, and the overall sealing performance is qualified.

[0042] Example 2: This embodiment is for a concrete-based washing tower, in which a composite lining is made on its inner wall.

[0043] S1, Substrate Treatment: Grind the inner wall of the concrete substrate to remove floating dust, oil stains and loose layers, so that the surface is dry, clean and smooth.

[0044] S2, Primer Coating Preparation: Apply a vinyl ester resin primer material compatible with the inner lining resin. The primer coating thickness should be controlled at 0.5mm. After it is surface dry, proceed to the next step of construction.

[0045] S3, Inner Lining Layer Fabrication: The inner lining layer is made of high-crosslinked density phenolic epoxy vinyl ester resin and carbon fiber chopped strand mat composite. The construction environment temperature is 15℃, relative humidity is 85%, and the site is clean, dry, and well-ventilated.

[0046] Add curing agent methyl ethyl ketone peroxide and accelerator cobalt naphthenate to phenolic epoxy vinyl ester resin. The ingredients are 100 parts phenolic epoxy vinyl ester resin, 1.0 part methyl ethyl ketone peroxide, and 0.8 parts cobalt naphthenate by weight. Stir well and let stand to defoam.

[0047] Carbon fiber chopped strand mat is laid on the base layer, and then coated with the prepared phenolic epoxy vinyl ester resin adhesive. Air bubbles are removed, and the mixture is laid layer by layer until the inner lining layer reaches a thickness of 5 mm. After the paste is applied, it is cured at room temperature for 24 hours, achieving a curing degree of over 70%.

[0048] S4, Structural Layer Fabrication: The structural layer is made of standard general-purpose bisphenol A epoxy vinyl ester resin and chopped glass fiber composite. 100 parts bisphenol A epoxy vinyl ester resin, 1.0 part methyl ethyl ketone peroxide, and 0.8 parts cobalt naphthenate are mixed evenly and allowed to stand to defoam.

[0049] Short glass fibers are laid on the surface of the inner lining layer, and then coated with bisphenol A epoxy vinyl ester resin adhesive. Air bubbles are removed, and the layers are repeated until the structural layer thickness reaches 20 mm. The structural layer is applied in 5 layers, each approximately 4 mm thick, to avoid excessive heat generation. After the adhesive is applied, it is allowed to cure at room temperature for 24 hours.

[0050] S5, Post-curing treatment: The composite lining after curing is post-cured at 80℃ for 24 hours, and the degree of curing reaches more than 95%.

[0051] S6, Topcoat Preparation: A 0.4mm thick vinyl ester resin wear-resistant coating containing alumina micropowder is applied and cured at room temperature for 24 hours to improve resistance to erosion and wear. After finishing, an electric spark tester is used to check for any penetrating defects, and the overall sealing performance is qualified.

[0052] Example 3: This embodiment is for a carbon steel substrate scrubbing tower in a high-temperature and humid chlorine environment.

[0053] S1, Inner Liner Fabrication: High-crosslinking density phenolic epoxy vinyl ester resin is selected. This resin has a heat distortion temperature of 155℃ and a glass transition temperature of 180℃, allowing for long-term stable operation at 180℃ and withstanding short-term temperature shocks of 300℃ for 2-3 minutes. It exhibits outstanding corrosion resistance to complex media such as those containing moist chlorine, high-temperature sulfuric acid waste gas, and chlorides. Carbon fiber reinforcement material consists of alternating layers of carbon fiber cloth and chopped carbon fiber mat.

[0054] The construction environment should be at a temperature of 20℃ and a relative humidity of 70%, with a clean, dry, and well-ventilated site. Mix 100 parts phenolic epoxy vinyl ester resin, 1.2 parts methyl ethyl ketone peroxide, and 0.5 parts cobalt naphthenate thoroughly and allow to stand to defoam. Use a hand lay-up wet method, laying layers until the inner lining layer is 5mm thick. Cur at room temperature for 24 hours, achieving 80% curing.

[0055] S2, Structural Layer Fabrication: The structural layer uses standard general-purpose bisphenol A epoxy vinyl ester resin, alkali-free fiberglass cloth, and chopped fiberglass composite. The structural layer is applied in 5 layers to a total thickness of 20mm and cured at room temperature for 24 hours.

[0056] S3, Post-curing treatment: Post-curing treatment at 120℃ for 24 hours, the degree of curing reaches 97%.

[0057] S4, Topcoat and Testing: The topcoat uses a vinyl ester resin wear-resistant coating containing ceramic microspheres, with a thickness of 0.3 mm, cured at room temperature for 24 hours to enhance resistance to erosion and wear. After finishing, it was tested with an electric spark tester and found to have no pinholes, indicating that the overall sealing performance was qualified.

[0058] This composite lining is suitable for scrubbing towers containing complex corrosive media such as wet chlorine, high-temperature sulfuric acid waste gas, and chlorides.

[0059] Furthermore, it should be noted that the present invention can be provided as a method, apparatus, or computer program product. Therefore, embodiments of the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Moreover, embodiments of the present invention can take the form of a computer program product implemented on one or more computer-usable storage media containing computer-usable program code.

[0060] The embodiments of the present invention are described with reference to flowchart illustrations and / or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, embedded processor, or other programmable data processing terminal device to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal device, generate instructions for implementing the flowchart illustrations. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0061] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing terminal device to operate in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The functions specified in one or more boxes. These computer program instructions may also be loaded onto a computer or other programmable data processing terminal equipment to cause a series of operational steps to be performed on the computer or other programmable terminal equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable terminal equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0062] It should also be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. The terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes said element.

[0063] Finally, it should be noted that the above description represents a preferred embodiment of the present invention. It should be pointed out that although preferred embodiments have been described, those skilled in the art, once they understand the basic inventive concept of the present invention, can make various improvements and modifications without departing from the principles described herein. These improvements and modifications should also be considered within the scope of protection of the present invention. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the embodiments of the present invention.

Claims

1. A composite lining for a scrubbing tower, disposed on the inner wall of a metal or concrete matrix of a scrubbing tower, characterized in that, The composite liner includes an inner liner layer and a structural layer; The inner lining is made of phenolic epoxy vinyl ester resin and carbon fiber reinforced material, and is in direct contact with the corrosive medium inside the scrubbing tower. It has a thickness of 5mm. The structural layer is made of bisphenol A epoxy vinyl ester resin and glass fiber reinforcement material, and is set on the outside of the inner liner to support and protect the inner liner. The structural layer has 4 to 5 layup units, each layup unit having a thickness of 4 to 5 mm.

2. The composite lining of the washing tower as described in claim 1, characterized in that, The inner lining layer is composed of phenolic epoxy vinyl ester resin and carbon fiber reinforced material, wherein: The phenolic epoxy vinyl ester resin is selected as a high crosslinking density phenolic epoxy vinyl ester resin to improve the heat resistance and corrosion resistance of the inner lining layer. The high cross-linking density phenolic epoxy vinyl ester resin has a heat distortion temperature of 155℃ and a glass transition temperature of 180℃. It can work stably for a long time at 180℃ and can withstand a short-term temperature shock of 300℃ for 2 to 3 minutes. The carbon fiber reinforced material includes carbon fiber cloth, carbon fiber felt, and chopped carbon fiber felt. In the carbon fiber reinforced material, carbon fiber cloth and chopped carbon fiber felt are alternately laid, with carbon fiber cloth serving as the reinforcing layer and chopped carbon fiber felt serving as the filler layer.

3. The composite lining of the washing tower as described in claim 1, characterized in that, The structural layer is composed of bisphenol A epoxy vinyl ester resin and glass fiber reinforcement, wherein: The bisphenol A epoxy vinyl ester resin is selected as a standard general-purpose bisphenol A epoxy vinyl ester resin, which is used to improve the acid, alkali and salt resistance of the structural layer, and enhance the elongation, toughness and glass fiber wettability of the structural layer. The glass fiber reinforced material includes alkali-free glass fiber cloth and chopped glass fibers.

4. The composite lining of the scrubbing tower as described in claim 1, characterized in that, The composite liner consists of an inner liner layer and a structural layer arranged sequentially from the inside out, wherein: An undercoating layer is also provided between the inner liner and the substrate. The undercoating layer is made of a vinyl ester resin primer material that is compatible with the inner liner to enhance the adhesion between the inner liner and the substrate. The outer side of the structural layer is provided with a surface coating, which is a vinyl ester resin coating containing wear-resistant fillers to enhance the composite lining's resistance to erosion and wear. The wear-resistant filler is selected from one of silicon carbide, alumina, and ceramic microspheres, and the filler particle size is above 200 mesh.

5. A manufacturing process for a composite lining of a scrubbing tower, applied to the composite lining according to any one of claims 1-4, characterized in that, It includes: S1, Grind the inner wall of the washing tower base to keep the surface of the base dry, clean and smooth; S2, a base coating is formed by brushing a vinyl ester resin primer material compatible with the inner liner resin onto the treated substrate surface; S3 employs a hand lay-up wet process, laying carbon fiber reinforcement material layer by layer on the base layer and then applying a phenolic epoxy vinyl ester resin adhesive with added curing agent and accelerator. S4, lay a layer of glass fiber reinforcement material on the surface of the inner lining, brush on the prepared bisphenol A epoxy vinyl ester resin adhesive, so that the resin fully wets the fiber layer and removes air bubbles, and cure at room temperature for 24 hours. S5, after the composite lining has been cured, it is post-cured at 80~120℃ for 24 hours to improve the crosslinking density and comprehensive performance of the resin and maintain the degree of curing to more than 95%. S6, a surface coating is made on the outside of the structural layer, using a vinyl ester resin coating containing wear-resistant fillers to enhance the composite lining's resistance to erosion and wear; S7. After the composite lining has been cured, it is trimmed to remove burrs and uneven parts, check for bubbles and cracks, repair them if necessary, and use an electric spark tester to perform pinhole detection on the lining layer to ensure that there are no penetrating defects and to ensure overall sealing.

6. The manufacturing process of the composite lining of the washing tower as described in claim 5, characterized in that, in: The thickness of both the base coating and the top coating is 0.3 to 0.5 mm.

7. The manufacturing process of the composite lining of the scrubbing tower as described in claim 5, characterized in that, The S3 process employs a hand lay-up wet layering technique, where carbon fiber reinforcement is laid layer by layer on a base coat, and then a resin adhesive containing curing agents and accelerators is applied. S301: According to the construction environment temperature and operation time requirements, add an appropriate amount of curing agent and accelerator to phenolic epoxy vinyl ester resin, stir evenly, let stand to defoam and then use for later use. S302 uses a hand lay-up wet process. A layer of carbon fiber reinforcement is laid on the base layer, followed by the application of a prepared phenolic epoxy vinyl ester resin solution. The resin is then used to evenly impregnate the carbon fiber layer with a brush or roller to remove air bubbles. S303, repeat the above operation, layer by layer, until a thickness of 5mm is achieved. Each layer of paste should be completed before the previous layer of gel to ensure interlayer bonding, or the upper layer can be sanded after it is completely cured before the next layer of paste is laid. After S304 is applied, it should be cured at room temperature for 24 hours to achieve a curing degree of 70-90% before subsequent construction can proceed.

8. The manufacturing process of the composite lining of the scrubbing tower as described in claim 5, characterized in that, In step S4, the prepared bisphenol A epoxy vinyl ester resin is repeatedly brushed onto the surface of the inner lining layer, and glass fiber reinforcement material is laid to remove air bubbles. The mixture is then cured at room temperature for 24 hours, wherein: S401, add appropriate amounts of curing agent and accelerator to bisphenol A epoxy vinyl ester resin, stir evenly, and let stand to defoam; S402, a layer of glass fiber reinforcement material is laid on the surface of the inner lining layer, and the prepared bisphenol A epoxy vinyl ester resin is applied to ensure that the resin fully wets the fiber layer and removes air bubbles. S403, repeat the layup operation until a thickness of 20mm is achieved. After the paste is applied, cure at room temperature for 24 hours.

9. The manufacturing process of the composite lining of the scrubbing tower as described in claim 7, characterized in that, The S302 adopts a hand lay-up wet layering process, wherein: The construction environment conditions for the hand lay-up wet layering process should meet the following requirements: the ambient temperature should be maintained at 15~35℃, the relative humidity should be controlled below 85%, and the site should be clean, dry, and well-ventilated.

10. The manufacturing process of the composite lining of the scrubbing tower as described in claim 8, characterized in that, The S401 is made by adding appropriate amounts of curing agent and accelerator to bisphenol A epoxy vinyl ester resin, wherein: The curing agent is methyl ethyl ketone peroxide, and the accelerator is cobalt naphthenate; The ratio of bisphenol A epoxy vinyl ester resin to curing agent is 100:1 to 1.5 by weight, and the amount of accelerator is 0.5 to 1 part by weight.

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