Device and method for monitoring and controlling high-temperature corrosion of water cooling wall of wall type tangential boiler

Abstract

The invention belongs to the field of water-cooled wall high-temperature corrosion monitoring, and discloses a wall-type tangential boiler water-cooled wall high-temperature corrosion monitoring control device and method.By precisely adjusting the nozzle deflection angles of primary air and secondary air, the position and distribution of flames in a hearth are controlled, the flames are prevented from directly painting a wall, and the service life of the wall-type tangential boiler water-cooled wall is prolonged. Therefore, gathering of a high-temperature area on the water cooling wall is reduced. Therefore, the risk of high-temperature corrosion is reduced, and the service life of the boiler water cooling wall is prolonged. By optimizing the opening degree of the air door, sufficient mixing of fuel and air is promoted, the incomplete combustion phenomenon is reduced, the CO concentration is reduced, and the combustion efficiency is improved. Therefore, not only is the combustion condition of the boiler improved, but also the emission of harmful gas is reduced, and the reduction of chemical corrosion to the water cooling wall is facilitated.

Description

Technical Field

[0001] The invention belongs to the field of high-temperature corrosion monitoring of water-cooled walls, and in particular relates to a high-temperature corrosion monitoring and control device and method for a wall-type tangentially circular boiler water-cooled wall. Background Art

[0002] The flame filling degree in the boiler furnace is good and the flame temperature is high, but the imaginary tangent circle diameter of the burning flame inside the boiler is large, which affects the heat distribution in the furnace and between the rear heating surfaces, resulting in uneven heat distribution between the boiler water-cooled wall and the rear heating surface, which ultimately affects the flue gas temperature at the furnace outlet and further affects the boiler efficiency. At the same time, due to the large tangent circle diameter of the flame combustion, the flame burns near the wall, which can easily cause excessive heat load in local areas of the water-cooled wall, resulting in coking, high-temperature corrosion and water-cooled wall overheating, which affect the safe and stable operation of the unit.

[0003] Patent document CN105605563A, relates to a wall-type tangential boiler water-cooled wall high-temperature corrosion monitoring and control device and method, the patent document is provided with a multi-layer primary air burner arranged on the upper and lower walls of the boiler water-cooled wall, and the secondary air port arranged with the burner is provided with two nozzles, one is a fixed nozzle, and the other is a deflectable nozzle driven by a driving device, and a flue gas measurement sampling point is arranged on the water-cooled wall, a controller receives the test result signal of the sampling point and controls the driving device of the deflectable air nozzle and the opening of the air damper, so that a layer of air protection film is formed in the downstream water-cooled wall area, blocking the coal powder airflow from directly flushing the water-cooled wall, and destroying the reducing atmosphere required for the water-cooled wall to produce high-temperature corrosion. There are the following disadvantages: 1. This control device and method can only obtain the atmosphere composition of several points near the wall, and cannot monitor the CO distribution of the entire flow field in the furnace in real time, so the deflection angle of the movable secondary air nozzle provided by its automatic control center is not accurate enough. 2. It is difficult to prevent the high-temperature corrosion problem caused by the flame brushing the wall due to the large diameter of the imaginary tangential circle of the flame burning inside the wall-type tangential circle boiler by setting movable and fixed secondary air nozzles in the furnace. 3. It is expensive to set movable and immovable secondary air nozzles at the same position inside the boiler, and there is interference between movable and immovable secondary air nozzles, and there is a risk of nozzle displacement or even falling.

[0004] Patent document CN113464917A, a wall-type tangential combustion boiler water-cooled wall surface atmosphere monitoring and regulation system, the patent document is provided with flue gas measurement sampling points on the four walls of the boiler water-cooled wall, the atmosphere composition of the wall surface is obtained through the sampling device, and the wall surface reducing atmosphere is adjusted by a number of wall-attached air nozzles, a number of air volume regulating valves, a number of three-way valves, a wall-attached air main pipe and a variable frequency fan arranged near the elevation of the water-cooled wall burner. There are the following disadvantages: 1. This control device and method can only obtain the atmosphere composition of a few points near the wall, and cannot monitor the CO distribution of the entire flow field in the furnace in real time, so the air volume regulation provided by its variable frequency fan is not accurate enough. 2. The regulation is only carried out by adjusting the air volume through the variable frequency fan, which is difficult to prevent the imaginary tangential diameter of the combustion flame inside the wall-type tangential boiler from being large, resulting in the high temperature corrosion problem directly caused by the flame brushing the wall. Summary of the invention

[0005] The purpose of the present invention is to overcome the problem that the large tangential circle flame is easy to brush the wall and cause high temperature corrosion in the furnace, and to provide a wall-type tangential circle boiler water-cooled wall high temperature corrosion monitoring and control device and method.

[0006] In order to achieve the above object, the present invention adopts the following technical solution: In a first aspect, the present invention provides a method for monitoring and controlling high temperature corrosion of a water-cooled wall of a wall-type tangentially circular boiler, comprising the following steps: Obtain the structure of the water-cooled wall of the wall-type tangential-circle boiler, and establish a network model based on the structure of the water-cooled wall of the wall-type tangential-circle boiler; Obtain the real-time parameters of the water-cooled wall of the wall-type tangential boiler, and establish a relevant model corresponding to the real-time parameters in combination with the network model; Through simulation of CFD data and related models, a three-dimensional model of furnace temperature field and CO field is obtained; According to the three-dimensional model of furnace temperature field and CO field, the deflection angles of different primary air nozzles and secondary air nozzles under different air volumes in the furnace temperature field, as well as the air door openings under different air volumes in the CO field, are obtained; According to the temperature and real-time air volume at which flames brush the wall inside the boiler, the optimal deflection angles of the primary and secondary air nozzles of the real-time air volume and the current furnace temperature field are obtained; According to the CO concentration and real-time air volume inside the boiler, the real-time air volume and the optimal air door opening of the current CO field are obtained.

[0007] A further improvement of the present invention is that the specific method of obtaining the structure of the water-cooled wall of the wall-type tangentially circular boiler and establishing a network model according to the structure of the water-cooled wall of the wall-type tangentially circular boiler is as follows: The structure of the water-cooled wall of the wall-type tangentially circular boiler is obtained, and the water-cooled wall of the wall-type tangentially circular boiler is divided into several regions according to the structure of the water-cooled wall of the wall-type tangentially circular boiler; Meshing the divided regions to form a meshed primary model; According to the physical distribution conditions of the water-cooled wall of the wall-type tangential boiler, the boundary conditions and real-time monitoring data of the grid primary model are established. According to the structural characteristics in several areas, the grid density of the gridded primary model is adjusted to finally form a gridded model.

[0008] A further improvement of the present invention is that the specific method of obtaining the real-time parameters of the water-cooled wall of the wall-type tangentially circular boiler and establishing the relevant model corresponding to the real-time parameters in combination with the network model is as follows: Collect the real-time parameters of the water-cooled wall of the wall-type tangential boiler, pre-process the real-time parameters, and obtain the real-time operating parameter data that meets the requirements; According to the real-time operating parameter data and the networked model, different areas of the boiler water wall and the corresponding parameter data are associated to build a preliminary correlation model; By comparing historical data and real-time parameters, the preliminary correlation model is optimized and corrected based on the comparison results to obtain the final correlation model.

[0009] A further improvement of the present invention is that the specific method of obtaining the three-dimensional model of the furnace temperature field and the CO field by simulating the CFD data with the relevant model is as follows: According to the structure and related models of the water-cooled wall of the wall-type tangential boiler, the boundary conditions and initial conditions of the CFD simulation are set; According to the boundary conditions and initial conditions of CFD simulation, the three-dimensional temperature field and CO concentration field model in the furnace is constructed, and CFD simulation is performed; Based on the CFD simulation results, a preliminary three-dimensional model of the furnace temperature field and CO field was obtained; The preliminary three-dimensional models of the furnace temperature field and CO field are corrected and optimized according to the real-time monitoring data to obtain the final three-dimensional models of the furnace temperature field and CO field.

[0010] A further improvement of the present invention is that, based on the three-dimensional model of the furnace temperature field and the CO field, a specific method for obtaining the deflection angles of different primary air nozzles and secondary air nozzles at different air volumes in the furnace temperature field, and the damper opening at different air volumes in the CO field is as follows: According to the three-dimensional model of furnace temperature field and CO field, the temperature distribution and CO concentration are analyzed to obtain the area where the flame contacts the water-cooled wall and the high CO concentration area caused by incomplete combustion; According to the area where the flame contacts the water-cooled wall and the high CO concentration area caused by incomplete combustion, a correlation model between the nozzle deflection angle and the air door opening and the temperature and CO concentration is constructed.

[0011] A further improvement of the present invention is that, according to the temperature and real-time air volume at which flames appear inside the boiler and the flame wall, a specific method for obtaining the optimal deflection angles of the primary air nozzle and the secondary air nozzle for the real-time air volume and the current furnace temperature field is as follows: Collect the surface temperature information of the water-cooled wall in the furnace in real time, record the real-time air volume information of the boiler, pre-process the temperature information and air volume information, and eliminate abnormal values; The influence of different primary and secondary air nozzle deflection angles on the flame position is simulated through the three-dimensional model of the furnace temperature field, and several effective deflection angle sets under the current air volume conditions are obtained; Execute several effective deflection angle sets and monitor boiler changes in real time. If the expected effect is not achieved, continue to adjust the deflection angle until the expected effect is achieved, and obtain the optimal deflection angles of the primary air nozzle and the secondary air nozzle of the current furnace temperature field.

[0012] A further improvement of the present invention is that, according to the CO concentration and the real-time air volume inside the boiler, a specific method for obtaining the optimal air door opening of the real-time air volume and the current CO field is as follows: Obtain the CO concentration information and real-time air volume information inside the boiler, pre-process the CO concentration information and real-time air volume information, and eliminate abnormal values; The CFD model is used to simulate the influence of different damper openings on the CO concentration field in the furnace, and the CO distribution relationship under different damper opening combinations is obtained. According to the CO distribution relationship under different damper opening combinations, the damper opening combination with the lowest CO concentration is obtained. Execute the damper opening combination with the lowest CO concentration and monitor the boiler changes in real time. If the expected effect is not achieved, continue to adjust the damper opening until the expected effect is achieved to obtain the optimal damper opening for the current CO field.

[0013] In a second aspect, the present invention provides a high temperature corrosion monitoring and control device for a wall-type tangential boiler water-cooled wall, comprising: A network model building module is used to obtain the structure of the water-cooled wall of the wall-type tangential-circle boiler and to build a network model according to the structure of the water-cooled wall of the wall-type tangential-circle boiler; The relevant model building module is used to obtain the real-time parameters of the water-cooled wall of the wall-type tangential boiler, and to build the relevant model corresponding to the real-time parameters in combination with the network model; The three-dimensional model building module is used to simulate the CFD data and related models to obtain the three-dimensional model of the furnace temperature field and CO field; An angle opening acquisition module is used to obtain the deflection angles of different primary air nozzles and secondary air nozzles at different air volumes in the furnace temperature field, and the air door openings at different air volumes in the CO field, based on the three-dimensional models of the furnace temperature field and the CO field; The deflection angle adjustment module is used to obtain the optimal deflection angles of the primary air nozzle and the secondary air nozzle according to the temperature and real-time air volume at which the flame brushes the wall inside the boiler; The air door opening adjustment module is used to obtain the optimal air door opening of the real-time air volume and the current CO field according to the CO concentration and real-time air volume inside the boiler.

[0014] In a third aspect, the present invention provides an electronic device including a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, it implements the steps of a method for monitoring and controlling high-temperature corrosion of a water-cooled wall of a wall-type cut-circle boiler.

[0015] In a fourth aspect, the present invention provides a storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, the steps of a method for monitoring and controlling high-temperature corrosion of a water-cooled wall of a wall-type tangentially-shaped boiler are implemented.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention controls the position and distribution of the flame in the furnace by accurately adjusting the deflection angle of the primary and secondary air nozzles, avoiding the flame from directly brushing the wall, thereby reducing the accumulation of high-temperature areas on the water-cooled wall. This reduces the risk of high-temperature corrosion and extends the service life of the boiler water-cooled wall. The present invention promotes the full mixing of fuel and air by optimizing the air door opening, reduces the phenomenon of incomplete combustion, reduces the CO concentration, and improves the combustion efficiency. This not only improves the combustion condition of the boiler, but also reduces the emission of harmful gases, which helps to reduce the chemical corrosion of the water-cooled wall. The present invention can monitor data in real time, dynamically adjust the air nozzle angle and air door opening, and adapt to the boiler operation status under different working conditions. Even in the case of load changes or fuel fluctuations, it can automatically optimize and adjust to ensure that the furnace temperature and CO concentration are maintained within a reasonable range. This adaptive control method improves the stability of the boiler system, reduces maintenance costs, and effectively prevents high-temperature corrosion. The method reduces the loss and failure rate of equipment, extends the life of the boiler water-cooled wall, reduces the maintenance frequency and downtime, and thus significantly reduces the operation and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a flow chart of the present invention; Figure 2 is a system diagram of the present invention; Figure 3 This is a system diagram of Example 9. DETAILED DESCRIPTION

[0018] In order to further understand the content of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the embodiments are only for explaining the present invention and are not intended to limit it.

[0019] Embodiment 1: See also Figure 1 A method for monitoring and controlling high temperature corrosion of water-cooled wall of wall-type tangential boiler comprises the following steps: S1, obtain the structure of the water-cooled wall of the wall-type tangential-circle boiler, and establish a network model according to the structure of the water-cooled wall of the wall-type tangential-circle boiler.

[0020] S2, obtain the real-time parameters of the water-cooled wall of the wall-type tangential boiler, combine the network model, and establish a relevant model corresponding to the real-time parameters.

[0021] S3, through the simulation of CFD data and related models, the three-dimensional model of the furnace temperature field and CO field is obtained.

[0022] S4, according to the three-dimensional model of the furnace temperature field and the CO field, obtain the deflection angles of different primary air nozzles and secondary air nozzles at different air volumes in the furnace temperature field, and the air door openings at different air volumes in the CO field.

[0023] S5, according to the temperature and real-time air volume at which flames brush the wall inside the boiler, obtain the optimal deflection angles of the primary air nozzle and the secondary air nozzle of the real-time air volume and the current furnace temperature field.

[0024] S6, according to the CO concentration and the real-time air volume inside the boiler, obtain the optimal damper opening of the real-time air volume and the current CO field.

[0025] Embodiment 2: See also Figure 2 , a wall-type tangential boiler water-cooled wall high temperature corrosion monitoring and control device, comprising: A network model building module is used to obtain the structure of the water-cooled wall of the wall-type tangential-circle boiler and to build a network model according to the structure of the water-cooled wall of the wall-type tangential-circle boiler; The relevant model building module is used to obtain the real-time parameters of the water-cooled wall of the wall-type tangential boiler, and to build the relevant model corresponding to the real-time parameters in combination with the network model; The three-dimensional model building module is used to simulate the CFD data and related models to obtain the three-dimensional model of the furnace temperature field and CO field; An angle opening acquisition module is used to obtain the deflection angles of different primary air nozzles and secondary air nozzles at different air volumes in the furnace temperature field, and the air door openings at different air volumes in the CO field, based on the three-dimensional models of the furnace temperature field and the CO field; The deflection angle adjustment module is used to obtain the optimal deflection angles of the primary air nozzle and the secondary air nozzle according to the temperature and real-time air volume at which the flame brushes the wall inside the boiler; The air door opening adjustment module is used to obtain the optimal air door opening of the real-time air volume and the current CO field according to the CO concentration and real-time air volume inside the boiler.

[0026] Embodiment 3: The specific method of obtaining the structure of the water-cooled wall of the wall-type tangential boiler and establishing a network model according to the structure of the water-cooled wall of the wall-type tangential boiler is as follows: Obtain detailed structural information of the water-cooled wall of the wall-type circular boiler. This includes the size, thickness, shape, material and installation position of the water-cooled wall in the boiler. At the same time, divide the water-cooled wall into different areas according to the actual structure of the boiler, such as high-temperature area, low-temperature area, corners and other key locations, to facilitate refined modeling. The process of area division not only helps with subsequent data collection, but also ensures that the model has higher resolution and adaptability, laying the foundation for the next step of meshing.

[0027] After completing the area division, meshing is performed to form a basic networked model of the water-cooled wall. Meshing usually uses finite element or finite volume methods to adjust the mesh density according to the complexity and structural characteristics of different regions. For example, for high-temperature areas or corners with complex shapes, finer meshes can be used to ensure the calculation accuracy of these areas. In this process, it is necessary to combine data such as the material properties, heat transfer characteristics, and corrosion tendency of the water-cooled wall to form basic network nodes. This mesh model will provide a skeleton framework for subsequent parameter import and three-dimensional field simulation.

[0028] On the basis of the basic network model, boundary conditions and real-time monitoring data from actual operation are introduced, such as temperature distribution, air volume changes, and pressure distribution in the boiler. These data are used to correct and optimize the network model to ensure that it is closer to the actual operating state. This step also includes setting boundary conditions, such as the heat transfer coefficient inside and outside the water-cooled wall, fluid flow conditions, etc., to enhance the dynamic response capability of the model. The introduction of real-time monitoring data makes the network model not only a static structural simulation, but also able to reflect the actual dynamic thermal corrosion environment, laying a solid foundation for the next step of simulation and optimization.

[0029] Embodiment 4: The specific method of obtaining the real-time parameters of the water-cooled wall of a wall-type tangential boiler and establishing a relevant model corresponding to the real-time parameters in combination with the network model is as follows: Collect real-time operating parameter data of the water-cooled wall of the wall-type tangential boiler, including temperature, pressure, flow rate, CO concentration and other information. In order to ensure the accuracy and stability of the data, the collected raw data needs to be preprocessed, including noise filtering, missing value filling and abnormal data removal. The focus of this step is to ensure that all input data is reliable, representative, and can be used for subsequent analysis. For example, the moving average method can be used to smooth the real-time temperature fluctuation data to obtain more stable parameter input, providing a reliable data basis for subsequent modeling.

[0030] Based on the preprocessed data, combined with the previously established network model, the different areas of the boiler water wall and the corresponding parameter data are associated to build a preliminary correlation model. This includes introducing actual temperature, pressure, air volume and other parameter values ​​at each grid node of the network model to ensure that the model can accurately reflect the specific working conditions of the water wall in each area. In order to achieve the accuracy of the model, statistical methods (such as multivariate linear regression or neural network) can be used to fit and calibrate the relationship between parameters, thereby forming a preliminary model framework based on real-time data.

[0031] Based on the preliminary correlation model, the model is further optimized and corrected through dynamic comparison of historical data and real-time data. Machine learning algorithms (such as support vector machines or random forests) can be used to identify potential patterns and trends in the data and iteratively optimize the model. By introducing data-driven methods, the correlation model can more accurately predict the risk areas of high-temperature corrosion. For example, the training model can predict the changes in CO concentration in the next few hours and analyze the risk of increased corrosion. The optimized correlation model can not only reflect the current working conditions, but also has predictive capabilities, providing a reliable basis for real-time control.

[0032] Embodiment 5: The specific method of simulating the CFD data and related models to obtain the three-dimensional model of the furnace temperature field and CO field is as follows: Based on the structure of the boiler water-cooled wall and the previously constructed network model, the boundary conditions and initial conditions of the CFD simulation are set. These conditions include the temperature distribution inside and outside the furnace, air volume flow rate, fuel type, combustion rate, etc. In the process of setting boundary conditions, special attention should be paid to key areas, such as the temperature and flow field of high-temperature and easily corrosive areas such as the flame brush wall position and the vicinity of the nozzle. The accuracy of the initial condition setting directly affects the stability and convergence of the simulation, so the rationality of the input conditions should be ensured by combining historical data and field measured data. This step is the basis for subsequent three-dimensional simulation and provides the required initial environment for CFD calculations.

[0033] After the boundary conditions and initial conditions are set, a preliminary three-dimensional model of the furnace temperature field and CO field is constructed, and the CFD solution is started. Through numerical methods (such as the finite volume method), the temperature and CO concentration are iteratively calculated on each grid unit inside the boiler, and the heat flow and chemical reaction process in the furnace are gradually simulated. The temperature field simulation focuses on the temperature distribution in the flame area, especially the heat-affected zone near the boiler wall, while the CO field simulation focuses on the CO concentration distribution in the combustion area and the furnace outlet. This step requires large computing resources, but it can obtain detailed heat flow and chemical reaction characteristics in the furnace, forming a complete three-dimensional temperature and CO field.

[0034] After obtaining the preliminary three-dimensional model of the furnace temperature field and CO field, the model is corrected and optimized in combination with real-time monitoring data. The simulation results are compared with the actual monitored temperature, CO concentration and other data to evaluate the accuracy of the simulation, and the model is adjusted according to the differences. If necessary, the model can be further optimized by increasing the grid density, adjusting the boundary conditions, etc., to ensure that it is more consistent with the actual working conditions of the boiler. Finally, the optimization control data such as the deflection angle of the primary and secondary air nozzles and the air door opening under different air volume conditions are extracted according to the corrected model, providing an accurate reference for subsequent boiler high-temperature corrosion monitoring and air volume control.

[0035] Embodiment 6: According to the three-dimensional model of the furnace temperature field and the CO field, the specific method for obtaining the deflection angles of different primary air nozzles and secondary air nozzles at different air volumes in the furnace temperature field, and the damper opening at different air volumes in the CO field is as follows: After obtaining the three-dimensional temperature field and CO concentration field model in the furnace, the temperature distribution and CO concentration are first analyzed in detail to identify key areas and potential high-temperature corrosion risk areas. Through the analysis of the temperature field, the areas where the flame contacts or is close to the water-cooled wall, that is, the "flame brushing the wall" position, are found, and these areas are marked as high-temperature and high-corrosion risk areas. Then, based on the concentration distribution of the CO field, the high CO concentration areas caused by incomplete combustion are found. The CO accumulation in these areas will aggravate the corrosion of the water-cooled wall. By identifying the overlapping areas of high temperature and high CO concentration, it is clear that the boiler areas where the wind nozzle angle and the air door opening need to be adjusted are clearly defined. This step lays the foundation for subsequent parameter adjustments and ensures the targeted optimization adjustment.

[0036] After identifying the key areas that need to be optimized, a correlation model between the nozzle deflection angle and damper opening and the temperature and CO concentration is constructed based on the three-dimensional model. Through multiple simulations, the effects of different combinations of primary and secondary air nozzle deflection angles and damper openings on the temperature field and CO field are analyzed. For example, increasing the deflection angle of the primary air nozzle can deviate the flame from the water-cooled wall and reduce the flame wall brushing effect; increasing the secondary air volume can reduce the local CO concentration, thereby reducing the risk of corrosion. Based on these simulation results, a correlation model is established so that a preliminary optimization solution for the nozzle deflection angle and damper opening can be obtained under given air volume and temperature conditions. This step ensures that the parameter adjustment is operational and provides a basis for subsequent real-time regulation.

[0037] Based on the constructed correlation model, the deflection angle of the nozzle and the damper opening are dynamically adjusted according to the real-time temperature, CO concentration and air volume data of the boiler. The real-time monitoring system continuously tracks the changes in temperature and CO concentration, verifies the control effect, and feeds back to the correlation model. When the system detects high temperature or high CO concentration areas, the model gives the best combination of wind nozzle deflection angle and damper opening, and adjusts these parameters in real time. After a period of verification and feedback, the correlation model is continuously optimized and calibrated, making the model more adaptable to the actual working conditions of the boiler. Through this dynamic optimization, the air volume and wind direction of the boiler can be adjusted more accurately, ultimately achieving the effect of reducing high-temperature corrosion and energy saving.

[0038] Embodiment 7: According to the temperature and real-time air volume at which flames appear inside the boiler, the specific method for obtaining the optimal deflection angles of the primary air nozzle and the secondary air nozzle for the real-time air volume and the current furnace temperature field is as follows: The temperature sensor is used to collect the surface temperature of the water-cooled wall in the furnace in real time, with special attention paid to the temperature of the flame brushing area. At the same time, the real-time air volume information of the boiler is recorded, including the wind speed and air volume of the primary and secondary air. These real-time data help identify the high-temperature areas where the flame contacts or is too close to the water-cooled wall, which are usually manifested as areas above the normal operating temperature. The data is preliminarily processed to filter out noise and outliers to ensure the accuracy of the data, and on this basis, it is determined whether the flame brushing has reached the temperature threshold that may cause high-temperature corrosion. This step provides a clear target area for the next step of wind nozzle adjustment by identifying the high-temperature area of ​​the flame brushing wall.

[0039] After identifying the flame wall brushing area, the three-dimensional temperature field model is used to simulate the effect of different primary and secondary air nozzle deflection angles on the flame position. During the simulation process, the deflection angles of the primary and secondary air nozzles are gradually increased or decreased to observe the displacement of the flame in the furnace, with special attention paid to the movement effect of the flame in the high-temperature area. For example, by gradually increasing the deflection angle of the primary air nozzle, an attempt is made to push the flame away from the water-cooled wall, thereby reducing the temperature of the wall brushing area. The deflection angle of the secondary air nozzle can further assist in flame orientation and optimize the flame flow direction. The effect of each deflection angle combination on the temperature field is recorded, and the deflection angle combination with the most significant temperature drop and the slightest wall brushing phenomenon is selected as a candidate for the optimization solution. This step uses multiple simulations to find multiple effective deflection angle combinations that reduce flame wall brushing under the current air volume conditions.

[0040] The selected deflection angle combination is applied to the actual operation of the boiler, and the temperature changes in the flame wall brushing area are tracked through the real-time monitoring system. If the temperature drops and the flame leaves the water-cooled wall, it means that the current deflection angle is effective; if the expected effect is not achieved, continue to adjust the angle and verify other candidate solutions. In this process, the model will fine-tune the nozzle angle combination based on the real-time feedback of temperature and air volume to make it more in line with actual operating conditions. At the same time, when the flame is stable and no longer brushes the wall, the current deflection angle is set to the new optimal deflection angle. When the air volume or load of the boiler changes, the model will dynamically calculate and adjust the nozzle angle to cope with the new operating conditions to ensure that the risk of high-temperature corrosion is effectively controlled.

[0041] Embodiment 8: According to the CO concentration and real-time air volume inside the boiler, the specific method for obtaining the real-time air volume and the optimal air door opening of the current CO field is as follows: The CO concentration distribution in the furnace is collected in real time through CO sensors installed in different areas of the boiler, with special attention paid to the CO concentration in the combustion area and the flue gas flow area. High CO concentration usually indicates incomplete combustion, which can lead to increased local corrosion. At the same time, the real-time air volume data of the primary and secondary air in the boiler are recorded to understand the relationship between the air volume and CO concentration under the current combustion conditions. In order to ensure the accuracy of the data, the CO concentration data needs to be noise filtered and outlier processed to obtain a clear CO distribution. Analyze the data to identify high-value areas of CO concentration and clarify the main target areas for adjusting the damper opening. This step provides the current CO distribution status in the furnace, laying the foundation for subsequent adjustment of the damper opening.

[0042] After analyzing the CO concentration distribution, the influence of different damper openings on the CO concentration field in the furnace is simulated based on the CFD (computational fluid dynamics) model. During the simulation process, the primary and secondary air damper openings are gradually increased or decreased to observe the changes in CO concentration, with special attention paid to the improvement in high-concentration areas. For example, increasing the primary air damper opening can make the fuel and air mix more fully, thereby reducing the local CO concentration; adjusting the secondary air damper opening can help improve the CO concentration in the flue gas after combustion. Record the CO distribution under each damper opening combination, find the damper opening combination that can minimize the CO concentration, and generate multiple candidate optimization solutions. This step helps determine the effective damper opening combination that improves CO distribution under the current air volume conditions through simulation.

[0043] The selected damper opening combination is applied to the actual boiler operation, and the effect of the current damper opening combination is verified by real-time monitoring of the change in CO concentration. If the CO concentration is significantly reduced and reaches the expected target, it means that the current opening combination is effective; if the expected effect is not achieved, other candidate solutions are gradually tried to adjust the damper opening. The model will further optimize the damper opening setting based on the feedback of real-time monitoring data to make it more suitable for actual working conditions. As the boiler load or combustion conditions change, the system can dynamically calculate and adjust the damper opening to ensure that the CO concentration is always within a reasonable range, reduce the risk of corrosion, and achieve a stable, low-corrosion combustion environment.

[0044] Embodiment 9: See also Figure 3 As shown, the present invention also provides an electronic device 100 for a high-temperature corrosion monitoring and control method of a water-cooled wall of a wall-type circular boiler; the electronic device 100 includes a memory 101, at least one processor 102, a computer program 103 stored in the memory 101 and executable on the at least one processor 102, and at least one communication bus 104.

[0045] The memory 101 can be used to store the computer program 103. The processor 102 implements the steps of the high-temperature corrosion monitoring and control method of the water-cooled wall of a wall-type tangential boiler described in Example 1 by running or executing the computer program stored in the memory 101 and calling the data stored in the memory 101. The memory 101 can mainly include a program storage area and a data storage area, wherein the program storage area can store an operating system, an application required for at least one function (such as a sound playback function, an image playback function, etc.), etc.; the data storage area can store data (such as audio data) created according to the use of the electronic device 100, etc. In addition, the memory 101 can include a non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) card, a flash card (Flash Card), at least one disk storage device, a flash memory device, or other non-volatile solid-state storage devices.

[0046] The at least one processor 102 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The processor 102 may be a microprocessor or any conventional processor, etc. The processor 102 is the control center of the electronic device 100, and uses various interfaces and lines to connect various parts of the entire electronic device 100.

[0047] The memory 101 in the electronic device 100 stores a plurality of instructions to implement a method for monitoring and controlling high temperature corrosion of a water-cooled wall of a wall-type tangentially-shaped boiler. The processor 102 can execute the plurality of instructions to implement: Obtain the structure of the water-cooled wall of the wall-type tangential-circle boiler, and establish a network model based on the structure of the water-cooled wall of the wall-type tangential-circle boiler; Obtain the real-time parameters of the water-cooled wall of the wall-type tangential boiler, and establish a relevant model corresponding to the real-time parameters in combination with the network model; Through simulation of CFD data and related models, a three-dimensional model of furnace temperature field and CO field is obtained; According to the three-dimensional model of furnace temperature field and CO field, the deflection angles of different primary air nozzles and secondary air nozzles under different air volumes in the furnace temperature field, as well as the air door openings under different air volumes in the CO field, are obtained; According to the temperature and real-time air volume at which flames brush the wall inside the boiler, the optimal deflection angles of the primary and secondary air nozzles of the real-time air volume and the current furnace temperature field are obtained; According to the CO concentration and real-time air volume inside the boiler, the real-time air volume and the optimal air door opening of the current CO field are obtained.

[0048] Embodiment 10: If the module / unit integrated in the electronic device 100 is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present invention implements all or part of the process in the above-mentioned embodiment method, and can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, and the computer program can implement the steps of the above-mentioned method embodiments when executed by the processor. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium may include: any entity or device that can carry the computer program code, recording medium, U disk, mobile hard disk, disk, optical disk, computer memory and read-only memory (ROM, Read-Only Memory).

[0049] It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Furthermore, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0050] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0051] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0052] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A method for monitoring and controlling high temperature corrosion of water-cooled wall of wall-type tangential boiler, characterized in that: The following steps are involved: Obtain the structure of the water-cooled wall of the wall-type tangential-circle boiler, and establish a network model based on the structure of the water-cooled wall of the wall-type tangential-circle boiler; Obtain the real-time parameters of the water-cooled wall of the wall-type tangential boiler, and establish a relevant model corresponding to the real-time parameters in combination with the network model; Through simulation of CFD data and related models, a three-dimensional model of furnace temperature field and CO field is obtained; According to the three-dimensional model of furnace temperature field and CO field, the deflection angles of different primary air nozzles and secondary air nozzles under different air volumes in the furnace temperature field, as well as the air door openings under different air volumes in the CO field, are obtained; According to the temperature and real-time air volume at which flames brush the wall inside the boiler, the optimal deflection angles of the primary and secondary air nozzles of the real-time air volume and the current furnace temperature field are obtained; According to the CO concentration and real-time air volume inside the boiler, the real-time air volume and the optimal air door opening of the current CO field are obtained.

2. A method for monitoring and controlling high temperature corrosion of water-cooled wall of wall-type tangential boiler according to claim 1, characterized in that: The specific method of obtaining the structure of the water-cooled wall of the wall-type tangential boiler and establishing a network model according to the structure of the water-cooled wall of the wall-type tangential boiler is as follows: The structure of the water-cooled wall of the wall-type tangentially circular boiler is obtained, and the water-cooled wall of the wall-type tangentially circular boiler is divided into several regions according to the structure of the water-cooled wall of the wall-type tangentially circular boiler; Meshing the divided regions to form a meshed primary model; According to the physical distribution conditions of the water-cooled wall of the wall-type tangential boiler, the boundary conditions and real-time monitoring data of the grid primary model are established. According to the structural characteristics in several areas, the grid density of the gridded primary model is adjusted to finally form a gridded model.

3. The method for monitoring and controlling high temperature corrosion of water-cooled wall of wall-type tangential boiler according to claim 1 is characterized in that: The specific method of obtaining the real-time parameters of the water-cooled wall of a wall-type tangential boiler and establishing a relevant model corresponding to the real-time parameters in combination with the network model is as follows: Collect the real-time parameters of the water-cooled wall of the wall-type tangential boiler, pre-process the real-time parameters, and obtain the real-time operating parameter data that meets the requirements; According to the real-time operating parameter data and the networked model, different areas of the boiler water wall and the corresponding parameter data are associated to build a preliminary correlation model; By comparing historical data and real-time parameters, the preliminary correlation model is optimized and corrected based on the comparison results to obtain the final correlation model.

4. The method for monitoring and controlling high temperature corrosion of water-cooled wall of wall-type tangential boiler according to claim 1 is characterized in that: The specific method of simulating the CFD data and related models to obtain the three-dimensional model of the furnace temperature field and CO field is as follows: According to the structure and related models of the water-cooled wall of the wall-type tangential boiler, the boundary conditions and initial conditions of the CFD simulation are set; According to the boundary conditions and initial conditions of CFD simulation, the three-dimensional temperature field and CO concentration field model in the furnace is constructed, and CFD simulation is performed; Based on the CFD simulation results, a preliminary three-dimensional model of the furnace temperature field and CO field was obtained; The preliminary three-dimensional models of the furnace temperature field and CO field are corrected and optimized according to the real-time monitoring data to obtain the final three-dimensional models of the furnace temperature field and CO field.

5. The method for monitoring and controlling high temperature corrosion of water-cooled wall of wall-type tangential boiler according to claim 1 is characterized in that: According to the three-dimensional model of the furnace temperature field and the CO field, the specific method for obtaining the deflection angles of different primary air nozzles and secondary air nozzles at different air volumes in the furnace temperature field, and the damper opening at different air volumes in the CO field is as follows: According to the three-dimensional model of furnace temperature field and CO field, the temperature distribution and CO concentration are analyzed to obtain the area where the flame contacts the water-cooled wall and the high CO concentration area caused by incomplete combustion; According to the area where the flame contacts the water-cooled wall and the high CO concentration area caused by incomplete combustion, a correlation model between the nozzle deflection angle and the air door opening and the temperature and CO concentration is constructed.

6. The method for monitoring and controlling high temperature corrosion of water-cooled wall of wall-type tangential boiler according to claim 1 is characterized in that: According to the temperature and real-time air volume at which flames appear inside the boiler, the specific method for obtaining the optimal deflection angles of the primary air nozzle and the secondary air nozzle for the real-time air volume and the current furnace temperature field is as follows: Collect the surface temperature information of the water-cooled wall in the furnace in real time, record the real-time air volume information of the boiler, pre-process the temperature information and air volume information, and eliminate abnormal values; The influence of different primary and secondary air nozzle deflection angles on the flame position is simulated through the three-dimensional model of the furnace temperature field, and several effective deflection angle sets under the current air volume conditions are obtained; Execute several effective deflection angle sets and monitor boiler changes in real time. If the expected effect is not achieved, continue to adjust the deflection angle until the expected effect is achieved, and obtain the optimal deflection angles of the primary air nozzle and the secondary air nozzle of the current furnace temperature field.

7. The method for monitoring and controlling high temperature corrosion of water-cooled wall of wall-type tangential boiler according to claim 1 is characterized in that: According to the CO concentration and real-time air volume inside the boiler, the specific method for obtaining the real-time air volume and the optimal air door opening of the current CO field is as follows: Obtain the CO concentration information and real-time air volume information inside the boiler, pre-process the CO concentration information and real-time air volume information, and eliminate abnormal values; The CFD model is used to simulate the influence of different damper openings on the CO concentration field in the furnace, and the CO distribution relationship under different damper opening combinations is obtained. According to the CO distribution relationship under different damper opening combinations, the damper opening combination with the lowest CO concentration is obtained. Execute the damper opening combination with the lowest CO concentration and monitor the boiler changes in real time. If the expected effect is not achieved, continue to adjust the damper opening until the expected effect is achieved to obtain the optimal damper opening for the current CO field.

8. A high temperature corrosion monitoring and control device for water-cooled wall of wall-type tangential boiler, characterized in that: include: A network model building module is used to obtain the structure of the water-cooled wall of the wall-type tangential-circle boiler and to build a network model according to the structure of the water-cooled wall of the wall-type tangential-circle boiler; The relevant model building module is used to obtain the real-time parameters of the water-cooled wall of the wall-type tangential boiler, and to build the relevant model corresponding to the real-time parameters in combination with the network model; The three-dimensional model building module is used to simulate the CFD data and related models to obtain the three-dimensional model of the furnace temperature field and CO field; An angle opening acquisition module is used to obtain the deflection angles of different primary air nozzles and secondary air nozzles at different air volumes in the furnace temperature field, and the air door openings at different air volumes in the CO field, based on the three-dimensional models of the furnace temperature field and the CO field; The deflection angle adjustment module is used to obtain the optimal deflection angles of the primary air nozzle and the secondary air nozzle according to the temperature and real-time air volume at which the flame brushes the wall inside the boiler; The air door opening adjustment module is used to obtain the optimal air door opening of the real-time air volume and the current CO field according to the CO concentration and real-time air volume inside the boiler.

9. An electronic device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of a method for monitoring and controlling high-temperature corrosion of a water-cooled wall of a wall-type tangentially circular boiler according to any one of claims 1 to 7 are implemented.

10. A storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of a method for monitoring and controlling high-temperature corrosion of a water-cooled wall of a wall-type tangentially circular boiler according to any one of claims 1 to 7 are implemented.

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