Method for repairing tank wall of carbon tank-type calcining furnace by high-temperature spraying

Abstract

This invention discloses a high-temperature spraying repair method for the tank wall of a carbon furnace. The spraying repair method comprises the following steps: S100, detecting the eroded and damaged areas of the furnace wall using a high-definition camera assembly, transmitting the video image signals of the detected eroded and damaged areas to a controller, and displaying the images on a monitor; S200, based on the location of the eroded and damaged areas detected by the high-definition camera assembly and the area calculated by the controller, spraying a prepared high-temperature spraying material onto the eroded and damaged areas of the furnace wall using a spraying assembly. This repair method is based on a high-temperature repair device, which uses a high-definition camera assembly to detect the location of the eroded and damaged areas and transmits the video signals back, thereby calculating the area of ​​the eroded and damaged areas by computer, and then spraying the high-temperature spraying material onto the eroded and damaged areas using a spraying assembly, thus achieving high-temperature spraying repair of the furnace wall.

Description

Technical Field

[0001] This invention relates to the field of material tanks for calcining furnaces, and more particularly to a method for high-temperature repair of carbon calcining furnaces after erosion. Background Technology

[0002] A pot-type calciner is a large-scale thermal equipment used to heat-treat petroleum coke for carbon production at high temperatures to improve its properties. It is widely used in metallurgy, chemical industry, and building materials. A pot-type calciner consists of several identical, vertically arranged pot-type calciners constructed of refractory materials. Typically, four pot-type calciners form a group, with the number of groups varying depending on configuration and capacity requirements. Each pot-type calciner has heating flues on both sides, where flue gas indirectly heats the petroleum coke inside. After calcination, the petroleum coke is cooled by a cooling water jacket at the bottom of the calciner and then discharged by a discharge mechanism.

[0003] During the heating process, volatiles escaping from the raw materials are collected in a volatiles collection channel located at the top of the furnace and sent into the combustion chamber to mix with the combustion air for combustion, providing continuous heat to the furnace. Influenced by petroleum coke prices and market conditions, many production enterprises this year have replaced low-sulfur coke with high-sulfur coke as the main raw material for carbon production. The high sulfur content of petroleum coke not only pollutes the environment and increases the pressure on environmental protection facilities, but also causes increasingly severe corrosion and damage to the feed tanks, resulting in blocked combustion chambers, difficulty in heating, and a significant reduction in output. Since the tank-type calcining furnace is a continuous operation equipment, the corrosion and damage are difficult to repair at high temperatures, directly affecting the service life of the calcining furnace and the economic benefits of the enterprise.

[0004] Based on the above-mentioned technical problems, those skilled in the art urgently need to develop a high-temperature spraying repair method for the tank wall of a carbon-type calcining furnace. Summary of the Invention

[0005] The purpose of this invention is to provide a high-temperature spraying repair method for the tank wall of a carbon furnace. This repair method is based on a high-temperature repair device, which uses a high-definition camera assembly to detect the location of the eroded and damaged area and transmit video signals back. The area of ​​the eroded and damaged area is then calculated by a computer. High-temperature spraying material is then sprayed onto the eroded and damaged area by a spraying assembly, thereby achieving high-temperature spraying repair of the tank wall of the furnace.

[0006] To achieve the above objectives, the present invention provides the following technical solution: The present invention discloses a high-temperature spraying repair method for the tank wall of a carbon furnace, which comprises the following steps: S100: The high-definition camera module detects the erosion and damage on the tank wall of the calcining furnace, and transmits the video image signal of the detected erosion and damage to the controller and displays it on the monitor. S200: Based on the location of the eroded and damaged area detected by the high-definition camera component and the area calculated by the controller, the prepared high-temperature spraying material is sprayed onto the eroded and damaged area of ​​the tank wall using the spraying component.

[0007] Furthermore, this high-temperature spraying repair method is based on a high-temperature spraying repair device; The high-temperature spraying repair device includes: The high-definition camera assembly is equipped with a circulating cooling water cooling structure to reduce the temperature of the inner high-definition camera through the circulating cooling water cooling structure, and the shooting end of the high-definition camera faces the tank wall of the tank-type calcining furnace. A spraying assembly connected to an external sealed material tank, wherein the sealed material tank stores pre-mixed high-temperature spraying material; and A controller having a display and connected to a high-definition camera via a communication cable; The high-definition camera selected is an endoscopic high-definition camera of model LNLR-HFTV-B, and the damaged area is calculated by measuring the burn length, height and width. The selected display is a 22-inch LNLR-MON220 industrial display.

[0008] Furthermore, the circulating cooling water cooling structure includes: A water storage tank, wherein cooling water is stored in the water storage tank; A water pump connected to the water storage tank, and the water pump is connected to a water pump motor for operation by the water pump motor, and the water pump is connected to an inlet pipe; The water storage tank is connected to a water outlet pipe.

[0009] Furthermore, the outer cylinder of the high-definition camera assembly has a double-layer water-cooling jacket structure, which is divided into an outer water-cooling layer and an inner water-cooling layer. The high-definition camera is wrapped with an inner water-cooling layer, and the outer water-cooling layer is located outside the inner water-cooling layer. The position where the outer cylinder and the end of the double-layer water-cooling jacket structure meet forms a front-end flow guiding area. The inner water-cooling layer and the outer water-cooling layer are connected through the front-end flow guiding area to form a connecting channel for the cooling medium. The outer cylinder is made of stainless steel or titanium alloy and is equipped with a sealed interface.

[0010] Furthermore, a discharge port is provided at the top of the sealed material tank, through which the prepared high-temperature spraying material is conveyed into the sealed material tank; The sealed material tank is connected to an external compressed air supply device via a compressed air pipeline to input compressed air into the sealed material tank; The spraying assembly includes: High-pressure nozzles; and A material conveying pipe connects the high-pressure nozzle and the sealed material tank. Compressed air drives the high-temperature spraying material into the material conveying pipe and sprays it out from the high-pressure nozzle.

[0011] Furthermore, the high-temperature spraying material is composed of 60% mullite powder, 15% white clay, 14% TP powder, 3% explosion-proof steel fiber with a length of 30mm and a diameter of 0.5mm, and 8% adhesive solution, mixed together.

[0012] Furthermore, the main steps include: S101. Stop feeding the calciner that is found to be corroded and damaged, and continue to discharge the material to the bottom layer. Then open all the furnace opening covers and remove the upper feeding hopper. S102. Insert the high-temperature spraying repair device into the tank-type calcining furnace through the upper feeding port; S103. The location of corrosion damage to the tank wall is detected and determined by a high-definition camera component, and the video image is transmitted to the display of the controller for display. The area of ​​the corrosion damage is calculated.

[0013] Furthermore, it also includes the following steps: S201. Prepare the required high-temperature spraying material according to the area of ​​the eroded and damaged part calculated in step S103; S202. Preparation of spraying personnel: Assign one spray gun operator to be responsible for spraying; assign one spraying assistant to be responsible for the power supply of the spray nozzle and to cooperate with the spray gun operator; assign one spraying machine operator to be responsible for adjusting the air pressure of the spraying machine and operating the circulating cooling water cooling structure of the camera; assign one spraying paint mixer to be responsible for mixing and dispensing the spraying paint. S203. Repair the eroded and damaged areas by spraying using a spraying assembly.

[0014] Furthermore, step S203 specifically includes the following steps: S20301. Before spraying, install and inspect water, electricity, and gas. The water source must be clean tap water free of oil and mud; the power supply should be a 380V three-phase power supply, and a 3-phase power supply should be selected. 10+2 6m 2 Copper core cables should be connected using a three-phase five-wire system; the air source must be dry, oil-free, and water-free, with a compressed air pressure ≥ 0.4 MPa and a gas flow rate ≥ 10 m³ / h. 3 / min, select a 4-point pipe for air pressure interface connection; after the power and water cooling structure of the sprayer, mixer and high-definition camera are powered on and adjusted to normal, proceed to the spraying construction stage; S20302. During spraying, the furnace temperature must be greater than 600℃; S20303. Based on the location and area of ​​the eroded and damaged parts detected in step S103, stir the spray coating material, adjust the setting time of the spray coating material formula according to the area, and control the setting speed by adjusting the addition ratio of the adhesive. S20304. High-temperature spraying repair of eroded and damaged areas shall be carried out, and the distance between the high-pressure nozzle and the sprayed surface shall not be less than 0.2m, and the spraying shall be carried out in a spiral trajectory.

[0015] Furthermore, in step S20303, the mixing speed of the mixer is not less than 35 r / min; the high-temperature spraying material after mixing enters the sealed material tank through the feeding port for storage. After adding, the inlet valve of the feeding port is closed and the compressed air valve is opened. The pressure value of the sealed material tank is observed. After meeting the construction requirements, the spray gun operator opens the spraying valve and uses the spraying valve to adjust the spraying flow rate. After spraying, the condition of the sprayed surface is observed through a high-definition camera assembly.

[0016] The high-temperature spraying repair method for the tank wall of a carbon furnace provided by the present invention, as described above, has the following beneficial effects: The repair method of the present invention is based on a high-temperature repair device, which uses a high-definition camera component to detect the location of the eroded and damaged parts and transmit video signals back, thereby calculating the area of ​​the eroded and damaged parts by computer, and spraying high-temperature spraying material onto the eroded and damaged parts by a spraying component, thus realizing high-temperature spraying repair of the tank wall of the tank calcining furnace.

[0017] The repair method of this invention can improve the output of calcining furnaces, enable online high-temperature repair, extend service life, and enhance enterprise competitiveness. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0019] Figure 1 This is a schematic diagram of the high-temperature spraying repair device provided in an embodiment of the present invention; Figure 2 A schematic diagram of the double-layer water-cooled jacket structure of the high-temperature spraying repair device provided in an embodiment of the present invention.

[0020] Explanation of reference numerals in the attached figures: 1. Tank-type calcining furnace; 2. High-definition camera; 3. Water storage tank; 4. High-pressure nozzle; 5. Sealed material tank; 6. Double-layer water-cooling jacket structure; 7. Sealed interface; 101. Fire duct; 102. Cooling water jacket; 103. Crusher; 104. Tank wall; 201. Communication cable; 202. Monitor; 301. Water pump; 302. Water pump motor; 303. Inlet pipe; 304. Outlet pipe; 501. Feed inlet; 502. Material conveying pipe; 503. Compressed air pipe; 601. Inner water cooling layer; 602. Outer water cooling layer; 603. Front-end flow guiding area; 604. Water inlet; 605. Water outlet. Detailed Implementation

[0021] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0022] See Figures 1 to 2 As shown; This embodiment discloses a high-temperature spraying repair method for the tank wall of a carbon furnace, which includes the following steps: S100, The high-definition camera component detects the eroded and damaged parts of the tank wall 104 of the tank calcining furnace 1, and transmits the video image signal of the detected eroded and damaged parts to the controller and displays it on the display 202; S200: Based on the location of the eroded and damaged area detected by the high-definition camera component and the area calculated by the controller, the prepared high-temperature spraying material is sprayed onto the eroded and damaged area of ​​the tank wall 104 using the spraying component.

[0023] Specifically, this embodiment discloses a method for online high-temperature repair of the eroded and damaged parts of the tank wall 104 of the tank-type calcining furnace 1. It mainly consists of two steps: first, accurately detecting the eroded and damaged parts of the tank wall using a high-definition camera assembly and transmitting the video images to the controller for area calculation; second, based on the calculated area and location, spraying the prepared high-temperature spraying material onto the eroded and damaged parts of the tank wall 104 using a spraying assembly to perform high-temperature repair work.

[0024] See Figure 1 As shown, the high-temperature spraying repair method in this embodiment is based on a high-temperature spraying repair device; The high-temperature spraying repair device of this embodiment includes: a high-definition camera assembly, which is equipped with a circulating cooling water cooling structure to reduce the temperature of the high-definition camera 2 inside the assembly, with the shooting end of the high-definition camera 2 facing the tank wall 104 of the tank-type calcining furnace 1; a spraying assembly connected to an external sealed material tank 5, wherein the sealed material tank 5 stores the prepared high-temperature spraying material; and a controller, which has a display 202 and is connected to the high-definition camera 2 via a communication cable 201.

[0025] More preferably, the high-definition camera 2 in this embodiment is an endoscopic high-definition camera of model LNLR-HFTV-B, and the damaged area is calculated by measuring the burn length, height and width; the high-definition camera of this embodiment has a high temperature resistance of 2000℃, and its camera has a 360° rotation function, can automatically advance and retreat, and has a sapphire lens with 27x optical zoom. The high-definition camera model of this embodiment is as above, and its own functions are not the focus of protection of this application, but its application is the focus of protection of this application.

[0026] Secondly, the display 202 in this embodiment is a 22-inch LNLR-MON220 industrial display. By calculating the damaged area, it can automatically calculate the approximate amount of repair material required, with a material quantity calculation deviation of <5%. Finally, the video signal is transmitted to the display 202 of this embodiment for display.

[0027] Since the HD camera 2 component is located inside the tank, it is in a high-temperature environment. To cool the HD camera 2 and ensure its performance, the HD camera component in this embodiment integrates a circulating cooling water cooling structure. Specifically, the circulating cooling water cooling structure in this embodiment includes a water storage tank 3, which stores cooling water; a water pump 301 connected to the water storage tank 3, and the water pump 301 is connected to a water pump motor 302 for driving operation; the water pump 301 is connected to an inlet pipe 303; and the water storage tank 3 is connected to an outlet pipe 304.

[0028] When integrating a high-definition camera, the outer cylinder of the high-definition camera assembly in this embodiment has a double-layer water-cooling jacket structure 6, which is divided into an outer water-cooling layer 602 and an inner water-cooling layer 601. The outer part of the high-definition camera 2 (specifically the cable part of the high-definition camera 2) is wrapped with the inner water-cooling layer 601, and the outer water-cooling layer 602 is located outside the inner water-cooling layer 601. The water inlet pipe 303 and the water outlet pipe 304 are respectively connected to the outer water-cooling layer 602 and the inner water-cooling layer 601. The position where the outer cylinder and the end of the double-layer water-cooling jacket structure 6 meet forms a front-end flow guiding area 603. The inner water-cooling layer 601 and the outer water-cooling layer 602 are connected through the front-end flow guiding area 603 to form a connecting channel for the cooling medium. Preferably, the outer cylinder of this embodiment is made of stainless steel or titanium alloy and is equipped with a sealing interface 7.

[0029] Preferably, in this embodiment, a discharge port 501 is provided on the upper part of the sealed material tank 5, and the prepared high-temperature spraying material is transported into the sealed material tank 5 through the discharge port 501; wherein, the sealed material tank 5 is connected to an external compressed air supply device through a compressed air pipeline 503 to input compressed air into the sealed material tank 5. The spraying assembly of this embodiment includes a high-pressure nozzle 4; and a material conveying pipe 502 connecting the high-pressure nozzle 4 and the sealed material tank 5. Compressed air drives the high-temperature spraying material into the material conveying pipe 502 and sprays it out from the high-pressure nozzle 4.

[0030] The high-temperature spraying material in this embodiment is composed of 60% mullite powder, 15% white clay, 14% TP powder, and 3% explosion-proof steel fibers (30mm in length and 0.5mm in diameter) mixed with 8% adhesive. This high-temperature spraying material is formulated with adhesive rather than water, primarily to improve the material's bonding strength and density, optimize bonding time, enhance thermal shock resistance, prevent cracking and peeling during high-temperature spraying repairs, and simplify construction.

[0031] Based on the above-mentioned high-temperature spraying repair method for the tank wall 104 of the carbon furnace 1, this embodiment further defines the specific operation method of each step, mainly including the following steps: S101. Stop feeding the calciner 1 where corrosion and damage are to be found, and continue to discharge the material to the bottom layer. Then open all furnace opening covers and remove the upper feeding hopper. S102. Insert the high-temperature spraying repair device into the tank-type calcining furnace 1 through the upper feeding port; S103. The location of corrosion damage to the tank wall 104 is detected and determined by the high-definition camera component, and the video image is transmitted to the display 202 of the controller for display, and the area of ​​the corrosion damage is calculated.

[0032] It also includes the following steps: S201. Prepare the required high-temperature spraying material according to the area of ​​the eroded and damaged part calculated in step S103; S202. Preparation of spraying personnel: Assign one spray gun operator to be responsible for spraying; assign one spraying assistant to be responsible for the power supply of the spray nozzle and to cooperate with the spray gun operator; assign one spraying machine operator to be responsible for adjusting the air pressure of the spraying machine and operating the circulating cooling water cooling structure of the camera; assign one spraying paint mixer to be responsible for mixing and dispensing the spraying paint. S203. Repair the eroded and damaged areas by spraying using a spraying assembly.

[0033] Specifically, step S203 includes the following steps: S20301. Before spraying, install and inspect water, electricity, and gas. The water source must be clean tap water free of oil and mud; the power supply should be a 380V three-phase power supply, and a 3-phase power supply should be selected. 10+2 6m 2 Copper core cables should be connected using a three-phase five-wire system; the air source must be dry, oil-free, and water-free, with a compressed air pressure ≥ 0.4 MPa and a gas flow rate ≥ 10 m³ / h. 3 / min, select a 4-point pipe for air pressure interface connection; after the power and water cooling structure of the sprayer, mixer and HD camera 2 are powered on and adjusted to normal, the spraying construction stage will begin. S20302. During spraying, the furnace temperature must be greater than 600℃; S20303. Based on the location and area of ​​the eroded and damaged parts detected in step S103, stir the spray coating material, adjust the setting time of the spray coating material formula according to the area, and control the setting speed by adjusting the addition ratio of the adhesive. S20304. High-temperature spraying repair of eroded and damaged parts shall be carried out, and the distance between the high-pressure nozzle 4 and the sprayed surface shall not be less than 0.2m, and the spraying shall be carried out in a spiral trajectory.

[0034] Preferably, in step S20303 above, the mixing speed of the mixer is not less than 28~35 r / min; the mixed high-temperature spraying material enters the sealed tank 5 through the discharge port 501 for storage. After addition, the inlet valve of the discharge port 501 is closed, and the compressed air valve is opened. The pressure value of the sealed tank 5 is observed. After meeting the construction requirements, the spray gun operator opens the spraying valve and uses the spraying valve to adjust the spraying flow rate; after spraying, the condition of the sprayed surface is observed through the high-definition camera component. In addition, the spraying valve is adjusted according to the appearance of the sprayed material. Due to the characteristics of petroleum coke, it is necessary to ensure that the surface of the finished work is smooth during spraying, and there should be no unevenness, as this will lead to material accumulation and tank blockage.

[0035] The high-temperature spraying repair method for the tank wall of a carbon furnace provided by the present invention, as described above, has the following beneficial effects: The repair method of the present invention is based on a high-temperature repair device, which uses a high-definition camera component to detect the location of the eroded and damaged parts and transmit video signals back, thereby calculating the area of ​​the eroded and damaged parts by computer, and spraying high-temperature spraying material onto the eroded and damaged parts by a spraying component, thus realizing high-temperature spraying repair of the tank wall of the tank calcining furnace.

[0036] The repair method of this invention can improve the output of calcining furnaces, enable online high-temperature repair, extend service life, and enhance enterprise competitiveness.

[0037] The repair method of this invention has certain economic benefits. In existing technologies, repairs involve patching after cooling, requiring a complete furnace shutdown and cooling before each repair can be carried out. Each repair takes 45 days from start to finish, impacting production by 400 tons per group. Each repair group requires approximately 4.8 tons of silica bricks, costing 12,480 yuan per ton at a market price of 2,600 yuan. Labor costs are 80,000 yuan per group, totaling 92,480 yuan for one repair. However, using the high-temperature spraying method of this invention, the cost per group (materials and labor) is only 40,000 yuan, reducing repair costs by 42,480 yuan per group. High-temperature repair of the furnace wall effectively extends the service life of the calcining furnace. With an investment of 12 million yuan per furnace and a designed lifespan of 10 years, each year of extension generates 1.2 million yuan in annual benefits. High-temperature spraying repair effectively extends the furnace's lifespan, increases production, and enhances the company's competitiveness.

[0038] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A method for high-temperature spraying repair of the tank wall of a carbon furnace for calcination, characterized in that, The spray repair method consists of the following steps: S100, the erosion and damage of the tank wall (104) of the tank calciner (1) is detected by a high-definition camera assembly, and the video image signal of the detected erosion and damage is transmitted to the controller and displayed on the display (202); S200: Based on the location of the eroded and damaged area detected by the high-definition camera component and the area calculated by the controller, the prepared high-temperature spraying material is sprayed onto the eroded and damaged area of ​​the tank wall (104) using the spraying component.

2. The high-temperature spraying repair method for the tank wall of a carbon furnace according to claim 1, characterized in that, This high-temperature spraying repair method is based on a high-temperature spraying repair device; The high-temperature spraying repair device includes: The high-definition camera assembly is equipped with a circulating cooling water cooling structure to reduce the temperature of the high-definition camera (2) on the inside through the circulating cooling water cooling structure. The shooting end of the high-definition camera (2) faces the tank wall (104) of the tank calciner (1). A spraying assembly connected to an external sealed material tank (5), wherein the sealed material tank (5) stores pre-prepared high-temperature spraying material; and The controller has a display (202) and is connected to a high-definition camera (2) via a communication cable (201); The high-definition camera (2) is an endoscopic high-definition camera of model LNLR-HFTV-B, and the damaged area is calculated by measuring the burn length, height and width. The display (202) selected is a 22-inch LNLR-MON220 industrial display.

3. The high-temperature spraying repair method for the tank wall of a carbon furnace according to claim 2, characterized in that, The circulating cooling water cooling structure includes: Water storage tank (3), wherein cooling water is stored in the water storage tank (3); A water pump (301) is connected to the water storage tank (3), and the water pump (301) is connected to a water pump motor (302) to drive the operation. The water pump (301) is connected to an inlet pipe (303). The water storage tank (3) is connected to a water outlet pipe (304).

4. The high-temperature spraying repair method for the tank wall of a carbon furnace according to claim 3, characterized in that, The outer cylinder of the high-definition camera assembly has a double-layer water-cooled jacket structure (6), which is divided into an outer water-cooled layer (602) and an inner water-cooled layer (601). The high-definition camera (2) is wrapped with the inner water-cooling layer (601), and the outer water-cooling layer (602) is located outside the inner water-cooling layer (601). The position where the outer cylinder and the end of the double-layer water-cooling jacket structure (6) are matched forms a front-end flow guiding area (603). The inner water-cooling layer (601) and the outer water-cooling layer (602) are connected through the front-end flow guiding area (603) to form a connecting channel for the cooling medium. The outer cylinder is made of stainless steel or titanium alloy and is equipped with a sealing interface (7).

5. The high-temperature spraying repair method for the tank wall of a carbon furnace according to claim 2, characterized in that, The sealed material tank (5) is provided with a discharge port (501) at the top, and the prepared high-temperature spraying material is transported into the sealed material tank (5) through the discharge port (501); The sealed material tank (5) is connected to an external compressed air supply device through a compressed air pipeline to input compressed air into the sealed material tank (5); The spraying assembly includes: High-pressure nozzle (4); and The material conveying pipe (502) connects the high-pressure nozzle (4) and the sealed material tank (5). The compressed air drives the high-temperature spraying material into the material conveying pipe (502) and sprays it out by the high-pressure nozzle (4).

6. The high-temperature spraying repair method for the tank wall of a carbon furnace according to claim 5, characterized in that, The high-temperature spraying material is composed of 60% mullite powder, 15% white clay, 14% TP powder, 3% explosion-proof steel fiber with a length of 30mm and a diameter of 0.5mm, and 8% adhesive solution.

7. The method for high-temperature spraying repair of the tank wall of a carbon-grade calcining furnace according to any one of claims 1 to 6, characterized in that, The main steps include: S101. Stop feeding the calciner (1) where erosion and damage are to be found, and continue to discharge the material to the bottom layer. Then open all the furnace opening covers and remove the upper feeding hopper. S102. Insert the high-temperature spraying repair device into the tank-type calcining furnace (1) through the upper feeding port; S103. The location of corrosion damage on the tank wall (104) is detected and determined by the high-definition camera component, and the video image is transmitted to the display (202) of the controller for display, and the area of ​​the corrosion damage is calculated.

8. The high-temperature spraying repair method for the tank wall of a carbon furnace according to claim 7, characterized in that, It also includes the following steps: S201. Prepare the required high-temperature spraying material according to the area of ​​the eroded and damaged part calculated in step S103; S202. Preparation of spraying personnel: Assign one spray gun operator to be responsible for spraying; assign one spraying assistant to be responsible for the power supply of the spray nozzle and to cooperate with the spray gun operator; assign one spraying machine operator to be responsible for adjusting the air pressure of the spraying machine and operating the circulating cooling water cooling structure of the camera; assign one spraying paint mixer to be responsible for mixing and dispensing the spraying paint. S203. Repair the eroded and damaged areas by spraying using a spraying assembly.

9. The high-temperature spraying repair method for the tank wall of a carbon furnace according to claim 8, characterized in that, Step S203 specifically includes the following steps: S20301. Before spraying, install and inspect water, electricity, and gas. The water source must be clean tap water free of oil and mud; the power supply should be a 380V three-phase power supply, and a 3-phase power supply should be selected. 10+2 6m 2 Copper core cables should be connected using a three-phase five-wire system; the air source must be dry, oil-free, and water-free, with a compressed air pressure ≥ 0.4 MPa and a gas flow rate ≥ 10 m³ / h. 3 / min, select a 4-point pipe for air pressure interface connection; after the circulating cooling water cooling structure of the sprayer, mixer and high-definition camera (2) is powered on and water is calibrated to normal, carry out the spraying construction stage; S20302. During spraying, the furnace temperature must be greater than 600℃; S20303. Based on the location and area of ​​the eroded and damaged parts detected in step S103, stir the spray coating material, adjust the setting time of the spray coating material formula according to the area, and control the setting speed by adjusting the addition ratio of the adhesive. S20304. High-temperature spraying repair of eroded and damaged parts, and the distance between the high-pressure nozzle (4) and the sprayed surface shall not be less than 0.2m, and the spraying shall be carried out in a spiral trajectory.

10. The high-temperature spraying repair method for the tank wall of a carbon furnace according to claim 9, characterized in that, In step S20303, the mixing speed of the mixer is not less than 35r / min; the high-temperature spraying material after mixing enters the sealed material tank (5) through the discharge port for storage. After adding, the inlet valve of the discharge port (501) is closed and the compressed air valve is opened. The pressure value of the sealed material tank (5) is observed. After meeting the construction requirements, the spray gun operator opens the spraying valve and uses the spraying valve to adjust the spraying flow rate. After spraying, the condition of the sprayed surface is observed through a high-definition camera assembly.

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