Preparation method and preparation device of anticorrosive coating for high-temperature desulfurization and dehumidification of chimney inner wall

Abstract

A method for preparing an anticorrosive coating for desulphurisation and dehumidification of a chimney inner wall comprises forming a group A coating by (i) heating phenolic resin and “128” resin and adding super-penetrant, (ii) adding active diluent and surfactant, (iii) adding polyamide wax, organic bentonite, titanium dioxide, zinc phosphate, barium sulphate, and mica, and (iv) adding silicone oil and dibutyl phthalate, followed by defoamer. The method also comprises preparing a group B coating by mixing curing agent and fumed silica. The weight ratio of the group A and B coatings is 5:1. A preparation device configured to implement the method comprises preparation component 1, stirring component 2, adjustment component (3, Fig. 3), and defoaming component 4. The stirring component comprises stirring motor (201, Fig. 4), stirring rod (202, Fig. 4), mounting slide (203, Fig. 4), first telescopic rod (204, Fig. 4), stirring frame (205, Fig. 5), sleeve (206, Fig. 5), stirring plate (207, Fig. 4), and filter plate (208, Fig. 8). The adjustment component comprises fixed frame (301, Fig. 9), adjustment slide rail (302, Fig. 9), adjustment rod (303, Fig. 9), rotating motor (304, Fig. 9), and second telescopic rod (305, Fig. 9).

Description

[0002] At present, air pollution is becoming increasingly serious, and coal-fired power plants have installed flue gas desulfurization facilities under the promotion of environmental protection policies. Due to a short anti-corrosion life cycle of exhaust flues, water treatment equipment, and various acid-resistant and alkali-resistant salt pools of various chemical plants, power plants, and steel plants, there are particularly serious economic damages. It is even necessary to shut down the facilities for half a year in order to re-do anti-corrosion maintenance and replace equipment, causing greater economic losses. At present, various types of anticorrosive coatings on the market are single and can solve only one functional indicator. However, industrial equipment such as chimneys show complex and diverse environments, are subject to high temperature, environmental corrosion, and fluid erosion, and thus have been in a complex dynamic working environment. Therefore, it is necessary to prepare a coating that has the properties of acid resistance, high-temperature resistance, and alkali resistance, as well as hardness, acid resistance, and abrasion resistance.

[0003] For example, patent 201510604771.6 disclosed an anticorrosive coating for an inner wall of a desulfurization and denitration device and a preparation method thereof. The anticorrosive coating includes a component A as a main coating and a component B as a curing agent, where the component A includes an epoxy resin, a phenolic resin, nano-silicon dioxide, diatomaceous earth, a ceramic micropowder, a glass powder, carbon black, a dispersant, a leveling agent, a defoamer, barium sulfate, a rust inhibitor, a solvent 1, a graphene microsheet powder, and activated carbon; and the component B includes a modified amine curing agent and a solvent 2.

[0004] Based on the above scheme, common problems of the existing anticorrosive coatings are weak adhesion and local cracks and shedding caused by long-term use of the coatings, which can corrode the chimneys to affect a performance of the coatings. Moreover, when the existing coating preparation device is used to produce coatings, uneven stirring or air bubbles easily occur when stirring the materials, thereby affecting a production quality of the coatings.

[0005] Therefore, it is necessary to solve the above problems through a preparation method and a preparation device of an anticorrosive coating for high-temperature desulfurization and dehumidification of a chimney inner wall. SUMMARY

[0006] An objective of the present disclosure is to provide a preparation method and a preparation device of an anticorrosive coating for high-temperature desulfurization and dehumidification of a chimney inner wall, so as to solve the problems raised in the background.

[0007] To achieve the above objective, the present disclosure provides the following technical solutions: the present disclosure provides a preparation method of an anticorrosive coating for high-temperature desulfurization and dehumidification of a chimney inner wall, including a group A coating and a group B coating, where the group A coating and the group B coating are at a weight ratio of 5:1;

[0008] the group A coating includes a 128 resin, a phenolic resin, a super penetrant, an active diluent, a surfactant, a polyamide wax powder, organic bentonite, titanium dioxide, zinc phosphate, precipitated barium sulfate, a mica powder, a defoamer, a silicone oil, and dibutyl phthalate (DBP);

[0009] the group B coating includes a curing agent and fumed silica; and

[0010] the preparation method includes the following steps:

[0011] SI, preparing the group A coating: adding a resin solution synthesized by heating the 128 resin and the phenolic resin into a preparation device, adding the super penetrant into the preparation device, and then stirring evenly to obtain a premix for later use;

[0012] S2, adding the active diluent and the surfactant into the preparation device and mixing evenly by stirring;

[0013] S3, adding the polyamide wax powder, the organic bentonite, the titanium dioxide, the zinc phosphate, the precipitated barium sulfate, and the mica powder into the preparation device and mixing evenly by stirring;

[0014] S4, adding the silicone oil and the DBP into the preparation device and mixing evenly by stirring, and then adding the defoamer to allow defoaming under the stirring to obtain the group A coating; and

[0015] S5, preparing the group B coating: adding the curing agent and the fumed silica into the preparation device, and then mixing evenly by stirring to obtain the group B coating.

[0016] The present disclosure further provides a preparation device of an anticorrosive coating for high-temperature desulfurization and dehumidification of a chimney inner wall, including a preparation component, a stirring component, an adjustment component, and a defoaming component, where the stirring component is arranged inside the preparation component, the adjustment component is arranged above the stirring component, and the defoaming component is arranged above the preparation component;

[0017] the stirring component includes a stirring motor, a stirring rod is fixedly arranged at one end of an output shaft of the stirring motor, a mounting slide is movably arranged on a surface of the stirring rod, a first telescopic rod is fixedly arranged on a surface of the mounting slide, a stirring frame is fixedly arranged at one end of the first telescopic rod away from the mounting slide, a sleeve is arranged inside the stirring frame, and a stirring plate is fixedly arranged on a surface of the sleeve;

[0018] a filter plate is fixedly arranged on a surface of the stirring plate, a filter screen is fixedly arranged on a surface of the filter plate, a limit plate is fixedly arranged on one side of the filter screen, an air bag is fixedly arranged inside the filter plate, a slide plate is fixedly arranged at one end of the air bag, and multiple pointed columns are fixedly arranged on a surface of the slide plate; and

[0019] the adjustment component includes a fixed frame, an adjustment slide rail is fixedly arranged on a surface of the fixed frame, an adjustment rod is movably arranged inside the adjustment slide rail, a rotating motor is fixedly arranged at a top of the adjustment rod, and a second telescopic rod is fixedly arranged below the fixed frame.

[0020] Preferably, a micro inflation pump is fixedly arranged inside the filter plate, an inflation tube is fixedly arranged at one end of the air bag, and an inflation tube communicated with the air bag is fixedly arranged at an output end of the micro inflation pump.

[0021] Preferably, a limit hole is arranged at a joint between the limit plate and the pointed column, multiple filter holes are arranged on a surface of the filter screen, the multiple pointed columns are adapted to the multiple filter holes, and a slide groove is arranged at a joint between the filter plate and the slide plate.

[0022] Preferably, the stirring rod movably penetrates and extends to an outside part of the mounting slide, the second telescopic rod is fixedly arranged between the mounting slide and the fixed frame, the adjustment rod is movably arranged inside the sleeve, and a movable groove is arranged at a joint between the sleeve and the adjustment rod.

[0023] Preferably, there are multiple adjustment slide rails, the multiple adjustment slide rails are fixedly arranged in a ring shape on a surface of the fixed frame, and the fixed frame is fixedly arranged on a surface of the stirring rod.

[0024] Preferably, the preparation component includes a reactor body, a cover body is arranged at a top of the reactor body, a support base is fixedly arranged at a bottom of the reactor body, multiple support legs are fixedly arranged at a bottom of the support base, and a mounting groove is arranged at a joint between the stirring rod and the cover body.

[0025] Preferably, a feeding pipe is fixedly arranged above the cover body, an earthing rod and a defoaming electrode are arranged above the cover body, a controller is arranged at one end of the cover body, and the controller is electrically connected to the defoaming electrode.

[0026] Preferably, the defoaming component includes a liquid storage tank, a tank cover is arranged at a top of the liquid storage tank, a blanking pipe is fixedly arranged at a bottom of the liquid storage tank, and a control valve is fixedly arranged on a surface of the blanking pipe.

[0027] Preferably, a liquid level meter is arranged inside the liquid storage tank, the blanking pipe is fixedly arranged above the feeding pipe, and the blanking pipe is communicated with the feeding pipe.

[0028] The present disclosure has the following advantages and technical effects:

[0029] 1. In the present disclosure, a high-molecular-weight mixture of isooctyl triethoxysilane and fatty alcohol polyvinyl ether is added to prepare a super penetrant in preparing the coating, and penetrates and wets the capillaries up to 30 mm deep, thereby hindering and blocking the invasion of water molecules and oxygen ions. A low-melting point glass powder is added, such that it meets a high-temperature chamber inside the chimney and melts to form a latent secondary bond, thus making the entire anticorrosive coating denser and more firmly bonded. In this way, the anticorrosive coating does not cause the wear resistance of the existing coating to decrease due to high temperature, prolongs the corrosion resistance of the coating and the service life of the coating, thereby improving a quality of the coating.

[0030] 2. In the present disclosure, the stirring component stirs and mixes materials in the preparation component. At the same time, a stroke of the first telescopic rod is controlled to make the stirring plate in different stirring positions, so as to flexibly adjust the stirring range of the stirring plate. In addition, the stirring plate can realize a scraping function. The adjustment component adjusts an angle of the stirring plate according to different types of materials or different working conditions to achieve different degrees of stirring.

[0031] 3. In the present disclosure, an amount of air bubbles detected by the defoaming electrode is compared with a standard range value to determine an air bubble situation in the preparation component. Then, the stirring component and the adjustment component are configured to conduct defoaming according to the thickness of an air bubble wall, thereby quickly treating the air bubbles in the preparation component. This process greatly improves a defoaming rate during the coating preparation, thereby improving a working efficiency of the preparation device and a production quality of the coating. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] FIG. 1 shows a schematic diagram for an overall structure of the preparation device in the present disclosure from a first viewing angle;

[0033] FIG. 2 shows a schematic structural diagram of the preparation component in the present disclosure;

[0034] FIG. 3 shows a schematic diagram for an assembly structure of the stirring component, the adjustment component, and the defoaming component in the present disclosure;

[0035] FIG. 4 shows a schematic structural diagram of the stirring component in the present disclosure;

[0036] FIG. 5 shows an enlarged view of A in FIG. 4 of the present disclosure;

[0037] FIG. 6 shows a schematic structural diagram of the stirring plate in the present disclosure;

[0038] FIG. 7 shows a schematic cross-sectional view for a structure of the stirring plate in the present disclosure;

[0039] FIG. 8 shows an enlarged view of B in FIG. 7 of the present disclosure;

[0040] FIG. 9 shows a schematic diagram for an assembly structure of the stirring component and the adjustment component in the present disclosure;

[0041] FIG. 10 shows an enlarged view of C in FIG. 9 of the present disclosure; and

[0042] FIG. 11 shows a schematic structural diagram of the defoaming component in the present disclosure.

[0043] Reference Numerals: 1. Preparation component; 101. Reactor body; 102. Cover body; 103. Support base; 104. Support leg; 105. Feeding pipe; 106. Earthing rod; 107. Defoaming electrode; 2. Stirring component, 201. Stirring motor; 202. Stirring rod; 203. Mounting slide; 204. First telescopic rod; 205. Stirring frame; 206. Sleeve; 207. Stirring plate; 208. Filter plate; 2081. Filter screen; 2082. Limit plate; 2083. Airbag; 2084. Slide plate; 2085. Pointed column; 2086. Slide groove; 3. Adjustment component; 301. Fixed frame; 302. Adjustment slide rail; 303. Adjustment rod; 304. Rotating motor; 305. Second telescopic rod; 4. Defoaming component; 401. Liquid storage tank; 402. Tank cover; 403. Liquid level meter; 404. Blanking pipe; 405. Control valve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0044] The technical solutions in the embodiments of the present disclosure are clearly and completely described below with reference to the accompanying drawings in the embodiments of the present disclosure. Apparently, the described embodiments are merely a part rather than all of the embodiments of the present disclosure. All other embodiments derived from the embodiments in the present disclosure by a person of ordinary skill in the art without creative efforts should fall within the protection scope of the present disclosure.

[0045] As shown in FIG. 1 and FIG. 2, the present disclosure provides a preparation method of an anticorrosive coating for high-temperature desulfurization and dehumidification of a chimney inner wall, including a group A coating and a group B coating, where the group A coating and the group B coating are at a weight ratio of 5:1;

[0046] the group A coating includes a 128 resin, a phenolic resin, a super penetrant, an active diluent, a surfactant, a polyamide wax powder, organic bentonite, titanium dioxide, zinc phosphate, precipitated barium sulfate, a mica powder, a defoamer, a silicone oil, and DBP;

[0047] the group B coating includes a curing agent and fumed silica.

[0048] In specific implementation, the group A coating specifically includes: 32 parts of the 128 resin, 6 parts of the phenolic resin, 1 part of a JFC-E super penetrant, 4 parts of the active diluent, 1 part of a Surfynol 104PA surfactant, 2 parts of a T-550F polyamide wax powder, 1 part of the organic bentonite, 10 parts of the titanium dioxide, 12 parts of the zinc phosphate, 25 parts of the precipitated barium sulfate, 5 parts of the mica powder, 0.3 parts of a 6800 defoamer, 0.1 parts of the silicone oil, and 0.6 parts of the DBP.

[0049] the group B coating specifically includes 19.5 parts of the curing agent (active hydrogen equivalent P5-P7) and 0.5 parts of the fumed silica.

[0050] A preparation method included the following steps:

[0051] SI, preparing the group A coating: adding a resin solution synthesized by heating the 128 resin and the phenolic resin into a preparation device, adding the super penetrant into the preparation device, and then stirring evenly to obtain a premix for later use;

[0052] S2, adding the active diluent and the surfactant into the preparation device and mixing evenly by stirring;

[0053] S3, adding the polyamide wax powder, the organic bentonite, the titanium dioxide, the zinc phosphate, the precipitated barium sulfate, and the mica powder into the preparation device and mixing evenly by stirring;

[0054] S4, adding the silicone oil and the DBP into the preparation device and mixing evenly by stirring, and then adding the defoamer to allow defoaming under the stirring to obtain the group A coating; and

[0055] S5, preparing the group B coating: adding the curing agent and the fumed silica into the preparation device, and then mixing evenly by stirring to obtain the group B coating.

[0056] Since existing coatings generally have poor adhesion, a high-molecular-weight mixture of isooctyl triethoxysilane and fatty alcohol polyvinyl ether is added to prepare a super penetrant in preparing the coating, and penetrates and wets the capillaries up to 30 mm deep, thereby hindering and blocking the invasion of water molecules and oxygen ions. A low-melting point glass powder is added, such that it meets a high-temperature chamber inside the chimney and melts to form a latent secondary bond, thus making the entire anticorrosive coating denser and more firmly bonded. In this way, the anticorrosive coating does not cause the wear resistance of the existing coating to decrease due to high temperature, enhances the corrosion resistance of the anticorrosive coating, and extends the service life. Moreover, the material is an inorganic non-metallic material with flame retardant and selfextinguishing properties, which can improve an anti-corrosion performance of the coating.

[0057] As shown in FIG. 1, the present disclosure further provides a preparation device of an anticorrosive coating for high-temperature desulfurization and dehumidification of a chimney inner wall, including a preparation component 1, a stirring component 2, an adjustment component 3, and a defoaming component 4, where the stirring component 2 is arranged inside the preparation component 1, the adjustment component 3 is arranged above the stirring component 2, and the defoaming component 4 is arranged above the preparation component 1.

[0058] As shown in FIG. 2, the preparation component 1 includes a reactor body 101, a cover body 102 is arranged at a top of the reactor body 101, a support base 103 is fixedly arranged at a bottom of the reactor body 101, multiple support legs 104 are fixedly arranged at a bottom of the support base 103, and a mounting groove is arranged at a joint between the stirring rod 202 and the cover body 102.

[0059] As shown in FIG. 4, FIG. 5, and FIG. 6, the stirring component 2 includes a stirring motor 201, a stirring rod 202 is fixedly arranged at one end of an output shaft of the stirring motor 201, a mounting slide 203 is movably arranged on a surface of the stirring rod 202, a first telescopic rod 204 is fixedly arranged on a surface of the mounting slide 203, a stirring frame 205 is fixedly arranged at one end of the first telescopic rod 204 away from the mounting slide 203, a sleeve 206 is arranged inside the stirring frame 205, and a stirring plate 207 is fixedly arranged on a surface of the sleeve 206.

[0060] It is worth noting that, in preparing the coating, the required materials are placed in the reactor body 101, and the materials in the preparation component 1 are stirred and mixed by the stirring component 2. During a stirring stage, the stirring motor 201 is started, and the stirring motor 201 drives the stirring rod 202 and the mounting slide 203 to rotate together, such that the stirring plate 207 can stir the materials in the reactor body 101. At the same time, the first telescopic rod 204 can be controlled to extend and contract according to different demands, such that the first telescopic rod 204 drives the stirring frame 205 and the sleeve 206 to make the stirring plate 207 in different stirring positions, thereby realizing flexible adjustment of a stirring range of the stirring plate 207.

[0061] Specifically, the coating is mixed with multiple raw materials during the preparation. When different raw materials are put into the reactor body 101, the raw materials of each part are not fully mixed due to uneven stirring. This will not only lead to incomplete reaction between the raw materials, but also cause gas to enter the liquid and generate air bubbles, thereby affecting the production quality of the coating. In order to improve the stirring effect, a stroke of the three groups of first telescopic rods 204 is controlled, such that the three groups of first telescopic rods 204 can be extended to different lengths, recorded as LI, L2, and L3 from low to high. That is, the extension lengths of the three groups of first telescopic rods 204 are equidistantly distributed, namely the three groups of stirring plates 207 are equidistantly distributed at different positions of the reactor body 101. In this way, the materials at different positions of the reactor body 101 can be fully mixed by the three groups of stirring plates 207 during stirring, thereby improving the full stirring and mixing effect of the materials in the reactor body 101, ensuring that the various components in the coating are evenly distributed, and reducing the possibility of air bubble formation.

[0062] When the materials in the reactor body 101 are stirred by the stirring component 2, it is found that the materials are easy to adhere to the inner wall of the reactor body 101 during stirring, resulting in uneven stirring. The stroke of the first telescopic rod 204 is controlled such that the extension of the first telescopic rod 204 reaches a preset value, and one end of the stirring plate 207 contacts the inner wall of the reactor body 101. The stirring motor 201 rotates together with the stirring rod 202, the mounting slide 203, and the first telescopic rod 204, such that the first telescopic rod 204 drives the stirring frame 205, the sleeve 206, and the stirring plate 207 to rotate together. This can not only stir the materials in the reactor body 101 evenly, but also scrape materials adhering to the inner wall of the reactor body 101 through the stirring plate 207, such that the materials will not adhere to the inner wall of the reactor body 101, thus improving the uniformity of material stirring.

[0063] As shown in FIG. 2, a feeding pipe 105 is fixedly arranged above the cover body 102, an earthing rod 106 and a defoaming electrode 107 are arranged above the cover body 102, a controller is arranged at one end of the cover body 102, and the controller is electrically connected to the defoaming electrode 107.

[0064] As shown in FIG. 11, the defoaming component 4 includes a liquid storage tank 401, a tank cover 402 is arranged at a top of the liquid storage tank 401, a blanking pipe 404 is fixedly arranged at a bottom of the liquid storage tank 401, and a control valve 405 is fixedly arranged on a surface of the blanking pipe 404; a liquid level meter 403 is arranged inside the liquid storage tank 401, the blanking pipe 404 is fixedly arranged above the feeding pipe 105, and the blanking pipe 404 is communicated with the feeding pipe 105.

[0065] It is worth noting that air bubbles are easily generated during the stirring preparation, and too many air bubbles may cause liquid overflow and affect the preparation effect. If there are air bubbles in the coating during construction, there can be pinhole-like surface defects left on the coating surface. The air bubbles may not only affect the preparation, but also greatly reduce the anti-corrosion performance of the coating, so air bubbles do have a great impact on the preparation and subsequent use of the coating. Therefore, the defoaming component 4 defoams the coating, and a bubble situation inside the reactor body 101 is detected by setting a circuit formed by the earthing rod 106 and the defoaming electrode 107 on the cover body 102. When the air bubbles rise to the electrode position, an electrical signal is generated between the defoaming electrodes 107 to issue an early warning to the control system. At this time, the control valve 405 is opened by a delivery control system, and the dosage of defoamer in the liquid storage tank 401 is monitored by the liquid level meter 403, such that the defoamer in the liquid storage tank 401 is transported to the feeding pipe 105 through the blanking pipe 404 and enters the reactor body 101, so as to achieve quantitative delivery of the defoamer. Afterwards, the stirring component 2 enables the stirring plate 207 to fully stir the materials and the defoamer in the reactor body 101, thereby achieving defoaming.

[0066] Example 2

[0067] During use of the Example 1, the defoaming component 4 achieves defoaming by quantitatively adding defoamer. Defoamer is a surfactant that can reduce the surface tension of the liquid, causing the air bubbles to burst and disappear. Moreover, the movement of air bubbles during the preparation of the coating is: the air bubbles are generated inside the liquid, and then rise to the surface of the liquid due to buoyancy. However, since some additives are added during the coating production to assist in the preparation of the coating, it is found that the addition of thickeners may increase wall thickness of air bubbles, increase elasticity of the air bubbles, and enhance stability of the air bubbles, making them difficult to eliminate, thereby affecting the production efficiency and production quality of the coating. To this end, the following improvement scheme is proposed:

[0068] As shown in FIG. 9 and FIG. 10, the adjustment component 3 includes a fixed frame 301, an adjustment slide rail 302 is fixedly arranged on a surface of the fixed frame 301, an adjustment rod 303 is movably arranged inside the adjustment slide rail 302, a rotating motor 304 is fixedly arranged at a top of the adjustment rod 303, and a second telescopic rod 305 is fixedly arranged below the fixed frame 301. There are multiple adjustment slide rails 302, the multiple adjustment slide rails 302 are fixedly arranged in a ring shape on a surface of the fixed frame 301, and the fixed frame 301 is fixedly arranged on a surface of the stirring rod 202. The stirring rod 202 movably penetrates and extends to an outside part of the mounting slide 203, the second telescopic rod 305 is fixedly arranged between the mounting slide 203 and the fixed frame 301, the adjustment rod 303 is movably arranged inside the sleeve 206, and a movable groove is arranged at a joint between the sleeve 206 and the adjustment rod 303.

[0069] It is worth noting that the adjustment component 3 adjusts the angle of the stirring plate 207, and the rotating motor 304 drives the adjustment rod 303 and the sleeve 206 to rotate together, and the stirring plate 207 rotates together with the sleeve 206, thereby adjusting the angle of the stirring plate 207, such that it can play a stirring role to different degrees. A second telescopic rod 305 is set, and the second telescopic rod 305 drives the mounting slide 203 to make the mounting slide 203 slide along the stirring rod 202, such that the mounting slide 203 drives the first telescopic rod 204, the stirring frame 205, the sleeve 206, and the stirring plate 207 to move together. Moreover, the sleeve 206 slides up and down along the adjustment rod 303, such that a stirring height of the stirring plate 207 can be adjusted by controlling the extension of the second telescopic rod 305.

[0070] As shown in FIG. 6, FIG. 7, and FIG. 8, a filter plate 208 is fixedly arranged on a surface of the stirring plate 207, a micro inflation pump is fixedly arranged inside the filter plate 208, an inflation tube is fixedly arranged at one end of the air bag 2083, and an inflation tube communicated with the air bag 2083 is fixedly arranged at an output end of the micro inflation pump. A filter screen 2081 is fixedly arranged on a surface of the filter plate 208, a limit plate 2082 is fixedly arranged on one side of the filter screen 2081, an air bag 2083 is fixedly arranged inside the filter plate 208, a slide plate 2084 is fixedly arranged at one end of the airbag 2083, and multiple pointed columns 2085 are fixedly arranged on a surface of the slide plate 2084. A limit hole is arranged at a joint between the limit plate 2082 and the pointed columns 2085, multiple filter holes are arranged on a surface of the filter screen 2081, the multiple pointed columns 2085 are adapted to the multiple filter holes, and a slide groove 2086 is arranged at a joint between the filter plate 208 and the slide plate 2084.

[0071] It is worth noting that the filter screen 2081 on the filter plate 208 can filter the air bubbles in the coating and reduce the amount of air bubbles in the liquid. The controller controls the micro inflation pump to increase the amount of gas input into the air bag 2083, thus increasing the expansion amount of the air bag 2083. This prompts the air bag 2083 to push the slide plate 2084 to move along the slide groove 2086 inside the filter plate 208, such that the pointed column 2085 on the slide plate 2084 passes through the limit plate 2082 and passes through the filter screen 2081, thereby puncturing the air bubbles to achieve defoaming.

[0072] In specific use, after the defoamer is added through the defoaming component 4, the amount of air bubbles in the preparation component 1 is detected by the defoaming electrode 107, and then the control system will adjust the stirring component 2 and the adjustment component 3 in time according to the amount of air bubbles, specifically:

[0073] When the defoaming electrode 107 detects air bubbles in the preparation component 1, the control system controls the speed of the stirring motor 201 to be adjusted to low-speed stirring to prevent the large number of air bubbles generated by the violent stirring of the stirring plate 207 from affecting a defoaming effect. The rotating motor 304 drives the adjustment rod 303 and the sleeve 206 to rotate to a preset angle, such that the angle between the stirring plate 207 and the stirring rod 202 is a right angle. At this time, the stirring plate 207 cuts the material and increases the contact area between the filter plate 208 and the air bubbles in the liquid. The extension lengths of the first telescopic rods 204 of the three groups are adjusted, and the corresponding adjustment rods 303 move the corresponding displacements along the adjustment slide rails 302, such that the three groups of stirring plates 207 are in the preset defoaming position. During the low-speed stirring of the stirring component 2, the filter plate 208 rotates with the stirring plate 207, such that the air bubbles in the liquid are fully in contact with the filter screen 2081. The centrifugal force generated by the stirring plate 207 during stirring can cause the air bubbles to collide with a surface of the filter screen 2081 to break the thinwalled air bubbles, thereby filtering the thin-walled air bubbles in the liquid to achieve defoaming.

[0074] After the low-speed stirring and filtering, the amount of air bubbles in the reactor body 101 is observed through a detection value of the defoaming electrode 107. In this way, the next defoaming request is determined by the detection result of the defoaming electrode 107, that is, when the detection value of the defoaming electrode 107 decreases and returns to a standard range, it indicates that the defoaming can be effectively achieved by the low-speed stirring and filtering, thereby improving a preparation quality of the coating.

[0075] It is worth noting that when the detection value of the defoaming electrode 107 decreases but the value does not change much, it indicates that the air bubble wall in the reactor body 101 is thick and the air bubbles are located on the surface of the liquid, causing the air bubbles to accumulate on the surface of the liquid and be difficult to remove. At this time, the low-speed stirring and filtering only through the filter screen 2081 cannot meet the demand for air bubble elimination. It is necessary to control the extension length of the second telescopic rod 305 such that the second telescopic rod 305 drives the mounting slide 203 along the stirring rod 202 to move the mounting slide 203 to a preset position. Moreover, the sleeve 206 moves upward along the movable groove on the surface of the adjustment rod 303, such that the stirring plate 207 moves upward to a preset position. At this time, a top part of the stirring plate 207 extends out of the liquid surface by a preset distance, that is, the filter plate 208 extends out of the liquid surface, and then the micro inflation pump is controlled by the controller to inflate the air bag 2083. The air bag 2083 is inflated and expanded, such that the air bag 2083 pushes the slide plate 2084 and the slide plate 2084 moves along the slide groove 2086 on the filter plate 208, and the pointed column 2085 on the slide plate 2084 passes through the limit plate 2082 and passes through the filter screen 2081 by a preset distance. During the low-speed stirring, when the filter screen 2081 contacts the air bubbles on the liquid surface, the thick air bubbles are punctured by the pointed column 2085, thereby quickly achieving defoaming.

[0076] In summary, the amount of air bubbles detected by the defoaming electrode 107 is compared with the standard range value to determine the air bubble situation in the preparation component 1. Then, the stirring component 2 and the adjustment component 3 conduct defoaming according to the thickness of the air bubble wall, thereby quickly treating the air bubbles in the preparation component 1. The above processes can greatly improve a defoaming rate of the coating preparation, thereby improving the working efficiency of the preparation device and the production quality of the coating.

[0077] Finally, it should be noted that the above are only preferred examples of the present disclosure and are not intended to limit the present disclosure. Although the present disclosure has been described in detail with reference to the above examples, those skilled in the art can still modify the technical solutions described in the above examples, or equivalently substitute some of the technical features of the examples. Any modifications, equivalent substitutions, improvements, and the like within the spirit and principle of the present disclosure should fall within the protection scope of the present disclosure.

Claims

1. A preparation method of an anticorrosive coating for high-temperature desulfurization and dehumidification of a chimney inner wall, comprising using a group A coating and a group B coating, wherein the group A coating and the group B coating are at a weight ratio of 5:1;the group A coating comprises a 128 resin, a phenolic resin, a super penetrant, an active diluent, a surfactant, a polyamide wax powder, organic bentonite, titanium dioxide, zinc phosphate, precipitated barium sulfate, a mica powder, a defoamer, a silicone oil, and dibutyl phthalate (DBP);the group B coating comprises a curing agent and fumed silica; andthe preparation method comprises the following steps:SI, preparing the group A coating: adding a resin solution synthesized by heating the 128 resin and the phenolic resin into a preparation device, adding the super penetrant into the preparation device, and then stirring evenly to obtain a premix for later use;S2, adding the active diluent and the surfactant into the preparation device and mixing evenly with the premix by stirring;S3, adding the polyamide wax powder, the organic bentonite, the titanium dioxide, the zinc phosphate, the precipitated barium sulfate, and the mica powder into the preparation device and mixing evenly by stirring;S4, adding the silicone oil and the DBP into the preparation device and mixing evenly by stirring, and then adding the defoamer to allow defoaming under the stirring to obtain the group A coating; andS5, preparing the group B coating: adding the curing agent and the fumed silica into the preparation device, and then mixing evenly by stirring to obtain the group B coating.

2. A preparation device of an anticorrosive coating for high-temperature desulfurization and dehumidification of a chimney inner wall, wherein the preparation device is configured to implement the preparation method of an anticorrosive coating for high-temperature desulfurization and dehumidification of a chimney inner wall according to claim 1; and the preparation device comprises a preparation component (1), a stirring component (2), an adjustment component (3), and a defoaming component (4), wherein the stirring component (2) is arranged inside the preparation component (1), the adjustment component (3) is arranged above the stirring component (2), and the defoaming component (4) is arranged above the preparation component (1);the stirring component (2) comprises a stirring motor (201), a stirring rod (202) is fixedly arranged at one end of an output shaft of the stirring motor (201), a mounting slide (203) is movably arranged on a surface of the stirring rod (202), a first telescopic rod (204) is fixedly arranged on a surface of themounting slide (203), a stirring frame (205) is fixedly arranged at one end of the first telescopic rod (204) away from the mounting slide (203), a sleeve (206) is arranged inside the stirring frame (205), and a stirring plate (207) is fixedly arranged on a surface of the sleeve (206);a filter plate (208) is fixedly arranged on a surface of the stirring plate (207), a filter screen (2081) is fixedly arranged on a surface of the filter plate (208), a limit plate (2082) is fixedly arranged on one side of the filter screen (2081), an air bag (2083) is fixedly arranged inside the filter plate (208), a slide plate (2084) is fixedly arranged at one end of the air bag (2083), and multiple pointed columns (2085) are fixedly arranged on a surface of the slide plate (2084); andthe adjustment component (3) comprises a fixed frame (301), an adjustment slide rail (302) is fixedly arranged on a surface of the fixed frame (301), an adjustment rod (303) is movably arranged inside the adjustment slide rail (302), a rotating motor (304) is fixedly arranged at a top of the adjustment rod (303), and a second telescopic rod (305) is fixedly arranged below the fixed frame (301).

3. The preparation device of an anticorrosive coating for high-temperature desulfurization and dehumidification of a chimney inner wall according to claim 2, wherein a micro inflation pump is fixedly arranged inside the filter plate (208), an inflation tube is fixedly arranged at one end of the air bag (2083), and an inflation tube communicated with the air bag (2083) is fixedly arranged at an output end of the micro inflation pump.

4. The preparation device of an anticorrosive coating for high-temperature desulfurization and dehumidification of a chimney inner wall according to claim 2, wherein a limit hole is arranged at a joint between the limit plate (2082) and the pointed column (2085), multiple filter holes are arranged on a surface of the filter screen (2081), the multiple pointed columns (2085) are adapted to the multiple filter holes, and a slide groove (2086) is arranged at a joint between the filter plate (208) and the slide plate (2084).

5. The preparation device of an anticorrosive coating for high-temperature desulfurization and dehumidification of a chimney inner wall according to claim 2, wherein the stirring rod (202) movably penetrates and extends to an outside part of the mounting slide (203), the second telescopic rod (305) is fixedly arranged between the mounting slide (203) and the fixed frame (301), the adjustment rod (303) is movably arranged inside the sleeve (206), and a movable groove is arranged at a joint between the sleeve (206) and the adjustment rod (303).

6. The preparation device of an anticorrosive coating for high-temperature desulfurization and dehumidification of a chimney inner wall according to claim 2, wherein there are multiple adjustment slide rails (302), the multiple adjustment slide rails (302) are fixedly arranged in a ring shape on a surface of the fixed frame (301), and the fixed frame (301) is fixedly arranged on a surface of the stirring rod (202).

7. The preparation device of an anticorrosive coating for high-temperature desulfurization and dehumidification of a chimney inner wall according to claim 2, wherein the preparation component (1) comprises a reactor body (101), a cover body (102) is arranged at a top of the reactor body (101), a support base (103) is fixedly arranged at a bottom of the reactor body (101), multiple support legs (104) are fixedly arranged at a bottom of the support base (103), and a mounting groove is arranged at a joint between the stirring rod (202) and the cover body (102).

8. The preparation device of an anticorrosive coating for high-temperature desulfurization and dehumidification of a chimney inner wall according to claim 7, wherein a feeding pipe (105) is fixedly arranged above the cover body (102), an earthing rod (106) and a defoaming electrode (107) are arranged above the cover body (102), a controller is arranged at one end of the cover body (102), and the controller is electrically connected to the defoaming electrode (107).

9. The preparation device of an anticorrosive coating for high-temperature desulfurization and dehumidification of a chimney inner wall according to claim 2, wherein the defoaming component (4) comprises a liquid storage tank (401), a tank cover (402) is arranged at a top of the liquid storage tank (401), a blanking pipe (404) is fixedly arranged at a bottom of the liquid storage tank (401), and a control valve (405) is fixedly arranged on a surface of the blanking pipe (404).

10. The preparation device of an anticorrosive coating for high-temperature desulfurization and dehumidification of a chimney inner wall according to claim 9, wherein a liquid level meter (403) is arranged inside the liquid storage tank (401), the blanking pipe (404) is fixedly arranged above the feeding pipe (105), and the blanking pipe (404) is communicated with the feeding pipe (105).02 04 25AMENDMENTS TO THE CLAIMS HAVE BEEN FILED AS FOLLOWS:-WHAT IS CLAIMED IS:

1. A preparation method of an anticorrosive coating for high-temperature desulfurization and dehumidification of a chimney inner wall, comprising using a group A coating and a group B coating, and mixing the group A coating and the group B coating at a weight ratio of 5:1;the group A coating comprises a 128 resin, a phenolic resin, a super penetrant, an active diluent, a surfactant, a polyamide wax powder, organic bentonite, titanium dioxide, zinc phosphate, precipitated barium sulfate, a mica powder, a defoamer, a silicone oil, and dibutyl phthalate (DBP);the group B coating comprises a curing agent and fumed silica; andthe group A coating is prepared by a process comprising the following steps:SI, adding a resin solution synthesized by heating the 128 resin and the phenolic resin into a preparation device, adding the super penetrant into the preparation device, and then stirring evenly to obtain a premix for later use;S2, adding the active diluent and the surfactant into the preparation device and mixing evenly with the premix by stirring;S3, adding the polyamide wax powder, the organic bentonite, the titanium dioxide, the zinc phosphate, the precipitated barium sulfate, and the mica powder into the preparation device and mixing evenly by stirring; andS4, adding the silicone oil and the DBP into the preparation device and mixing evenly by stirring, and then adding the defoamer to allow defoaming under the stirring to obtain the group A coating; andthe group B coating is prepared by a process comprising: adding the curing agent and the fumed silica into the preparation device, and then mixing evenly by stirring to obtain the group B coating.

2. A preparation device of an anticorrosive coating for high-temperature desulfurization and dehumidification of a chimney inner wall, wherein when the preparation device is used to implement the preparation method of an anticorrosive coating for high-temperature desulfurization and dehumidification of a chimney inner wall according to claim 1; and, the preparation device comprises a preparation component (1), a stirring component (2), an adjustment component (3), and a defoaming component (4), wherein the stirring component (2) is arranged in the preparation component (1), and the defoaming component (4) is arranged above the preparation component (1); and whereinthe stirring component (2) comprises a stirring motor (201), a stirring rod (202) is fixedly arranged at one end of an output shaft of the stirring motor (201), a mounting slide (203) is movably02 04 25arranged on a surface of the stirring rod (202), a first telescopic rod (204) is fixedly arranged on a surface of the mounting slide (203), a stirring frame (205) is fixedly arranged at one end of the first telescopic rod (204) away from the mounting slide (203), a sleeve (206) is arranged inside the stirring frame (205), and a stirring plate (207) is fixedly arranged on a surface of the sleeve (206);a filter plate (208) is fixedly arranged on a surface of the stirring plate (207), a filter screen (2081) is fixedly arranged on a surface of the filter plate (208), a limit plate (2082) is fixedly arranged on one side of the filter screen (2081), an air bag (2083) is fixedly arranged inside the filter plate (208), a slide plate (2084) is fixedly arranged at one end of the air bag (2083), and multiple pointed columns (2085) are fixedly arranged on a surface of the slide plate (2084);the adjustment component (3) comprises a fixed frame (301) fixedly arranged on a surface of the stirring rod (202), an adjustment slide rail (302) is fixedly arranged on a surface of the fixed frame (301), an adjustment rod (303) is movably arranged inside the adjustment slide rail (302), a rotating motor (304) is fixedly arranged at a top of the adjustment rod (303), and a second telescopic rod (305) is fixedly arranged below the fixed frame (301).

3. The preparation device of an anticorrosive coating for high-temperature desulfurization and dehumidification of a chimney inner wall according to claim 2, wherein a micro inflation pump is fixedly arranged inside the filter plate (208), an inflation tube is fixedly arranged at one end of the air bag (2083), and an inflation tube communicated with the air bag (2083) is fixedly arranged at an output end of the micro inflation pump.

4. The preparation device of an anticorrosive coating for high-temperature desulfurization and dehumidification of a chimney inner wall according to claim 2, wherein a limit hole is arranged at a joint between the limit plate (2082) and the pointed column (2085), multiple filter holes are arranged on a surface of the filter screen (2081), the multiple pointed columns (2085) are adapted to the multiple filter holes, and a slide groove (2086) is arranged at a joint between the filter plate (208) and the slide plate (2084).

5. The preparation device of an anticorrosive coating for high-temperature desulfurization and dehumidification of a chimney inner wall according to claim 2, wherein the stirring rod (202) movably penetrates and extends to an outside part of the mounting slide (203), the second telescopic rod (305) is fixedly arranged between the mounting slide (203) and the fixed frame (301), the adjustment rod (303) is movably arranged inside the sleeve (206), and a movable groove is arranged at a joint between the sleeve (206) and the adjustment rod (303).02 04 256. The preparation device of an anticorrosive coating for high-temperature desulfurization and dehumidification of a chimney inner wall according to claim 2, wherein there are multiple adjustment slide rails (302), and the multiple adjustment slide rails (302) are fixedly arranged in a ring shape on a surface of the fixed frame (301).

7. The preparation device of an anticorrosive coating for high-temperature desulfurization and dehumidification of a chimney inner wall according to claim 2, wherein the preparation component (1) comprises a reactor body (101), a cover body (102) is arranged at a top of the reactor body (101), a support base (103) is fixedly arranged at a bottom of the reactor body (101), multiple support legs (104) are fixedly arranged at a bottom of the support base (103), and a mounting groove is arranged at a joint between the stirring rod (202) and the cover body (102).

8. The preparation device of an anticorrosive coating for high-temperature desulfurization and dehumidification of a chimney inner wall according to claim 7, wherein a feeding pipe (105) is fixedly arranged above the cover body (102), an earthing rod (106) and a defoaming electrode (107) are arranged above the cover body (102), a controller is arranged at one end of the cover body (102), and the controller is electrically connected to the defoaming electrode (107).

9. The preparation device of an anticorrosive coating for high-temperature desulfurization and dehumidification of a chimney inner wall according to claim 2, wherein the defoaming component (4) comprises a liquid storage tank (401), a tank cover (402) is arranged at a top of the liquid storage tank (401), a blanking pipe (404) is fixedly arranged at a bottom of the liquid storage tank (401), and a control valve (405) is fixedly arranged on a surface of the blanking pipe (404).

10. The preparation device of an anticorrosive coating for high-temperature desulfurization and dehumidification of a chimney inner wall according to claim 9, wherein a liquid level meter (403) is arranged inside the liquid storage tank (401), the blanking pipe (404) is fixedly arranged above the feeding pipe (105), and the blanking pipe (404) is communicated with the feeding pipe (105).

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