Gas-phase alkali metal concentration acquisition method, system, electronic device, and readable storage medium

Abstract

The application discloses a method, system, electronic device and readable storage medium for obtaining gas-phase alkali metal concentration, and the method comprises the following steps: obtaining multiple operating parameters of a high-alkali coal boiler under a current working condition; inputting the multiple operating parameters into a preset temperature prediction model; obtaining a three-dimensional distribution of internal temperature of the current high-alkali coal boiler; determining preset value ranges into which the multiple operating parameters fall; each preset value range is previously provided with a preset relationship function between temperature and gas-phase alkali metal concentration; determining preset functions corresponding to the multiple operating parameters according to the preset value ranges into which the multiple operating parameters fall; and generating a three-dimensional distribution of internal gas-phase alkali metal concentration of the current high-alkali coal boiler according to the three-dimensional distribution of internal temperature and the multiple preset functions. According to the three-dimensional distribution of gas-phase alkali metal concentration, the application reduces the temperature in a high-concentration region, reduces the gas-phase alkali metal concentration, reduces the condensation of gas-phase alkali metal and the formation of low-temperature eutectic, and improves the safety and stability of the high-alkali coal boiler.

Description

Technical Field

[0001] This application relates to the chemical industry, and more specifically, to a method, system, electronic device, and readable storage medium for obtaining the concentration of gaseous alkali metals. Background Technology

[0002] High-alkali coal refers to coal with a high content of alkali metal elements (such as sodium and potassium). In high-alkali coal, alkali metals can exist in both soluble and insoluble forms. Soluble alkali metals readily volatilize and enter the gas phase during combustion in high-alkali coal boilers. When the concentration of gaseous alkali metals exceeds a certain value, they condense in some boiler heating surface areas, forming a viscous initial layer. This initial layer can adsorb fly ash particles from the boiler, which in turn adsorb gaseous alkali metals, forming mineral components containing sodium, potassium, etc. These mineral components easily combine with other mineral components to form a low-temperature eutectic that adheres to the boiler heating surface. This low-temperature eutectic leads to uneven heating of the boiler heating surface, resulting in excessively high temperatures that damage the high-alkali coal boiler and affect its safe and stable operation. Therefore, effectively improving the safe and stable operation of high-alkali coal boilers is a pressing technical problem that needs to be solved. Summary of the Invention

[0003] In view of this, this application provides a method, system, electronic device and readable storage medium for obtaining gaseous alkali metal concentration, to solve the problem of low safety and stability in the operation of high-alkali coal boilers.

[0004] To achieve the above objectives, the following solution is proposed:

[0005] A method for obtaining the concentration of gaseous alkali metals, the method comprising:

[0006] Obtain multiple operating parameters of a high-alkali coal boiler under its current operating conditions;

[0007] The multiple operating parameters are input into a preset temperature prediction model to obtain the three-dimensional distribution of the internal temperature of the current high-alkali coal boiler.

[0008] Determine the preset value range into which each operating parameter falls, and each preset value range is pre-set with a preset relationship function to characterize the functional relationship between temperature and the concentration of the gaseous alkali metal;

[0009] Based on the preset value range into which each operating parameter falls, determine the preset function corresponding to each operating parameter;

[0010] Based on the three-dimensional distribution of the internal temperature and multiple preset functions, the three-dimensional distribution of the internal gaseous alkali metal concentration of the current high-alkali coal boiler is generated.

[0011] Optionally, determining the preset function corresponding to each operating parameter based on the preset value range into which each operating parameter falls includes:

[0012] Based on the preset value range into which the target operating parameter falls, a preset relationship function corresponding to the preset value range is obtained, wherein the target operating parameter is one of the operating parameters;

[0013] Determine the target weights for the target operating parameters;

[0014] The product of the target weight and the preset relationship function is used as the preset function corresponding to the target running parameters.

[0015] Optionally, generating the three-dimensional distribution of the internal gaseous alkali metal concentration of the current high-alkali coal boiler based on the three-dimensional distribution of the internal temperature and multiple preset functions includes:

[0016] The multiple preset functions are added together, and the result of the addition is used as the objective function of temperature and gaseous alkali metal concentration under the current operating conditions. In the objective function, temperature is the independent variable and gaseous alkali metal concentration is the dependent variable.

[0017] The temperature of the target region is determined based on the three-dimensional distribution of the internal temperature, wherein the target region is a region consisting of at least one grid region in the three-dimensional distribution of the internal temperature;

[0018] Substitute the temperature of the target region into the objective function to obtain the gaseous alkali metal concentration corresponding to the target region;

[0019] The gaseous alkali metal concentrations corresponding to all target regions are mapped to the corresponding target regions to obtain the three-dimensional distribution of the internal gaseous alkali metal concentrations.

[0020] Optional, also includes:

[0021] Based on the three-dimensional distribution of the internal gaseous alkali metal concentration, the region where the gaseous alkali metal concentration is higher than the concentration threshold is defined as a high concentration region, where the concentration threshold is the concentration at which gaseous alkali metals condense.

[0022] Lowering the internal temperature of the high-concentration region reduces the gaseous alkali metal concentration in that region.

[0023] A gaseous alkali metal concentration acquisition system, the gaseous alkali metal concentration acquisition system comprising:

[0024] The parameter acquisition unit is used to acquire multiple operating parameters of the high-alkali coal boiler under the current operating conditions.

[0025] The first distribution acquisition unit is used to input the multiple operating parameters into a preset temperature prediction model to obtain the three-dimensional distribution of the internal temperature of the current high-alkali coal boiler.

[0026] The range determination unit is used to determine the preset value range into which each operating parameter falls. Each preset value range is pre-set with a preset relationship function to characterize the functional relationship between temperature and the concentration of the gaseous alkali metal.

[0027] The function acquisition unit is used to determine the preset function corresponding to each running parameter based on the preset value range into which each running parameter falls;

[0028] The second distribution acquisition unit is used to generate the three-dimensional distribution of the internal gaseous alkali metal concentration of the current high-alkali coal boiler based on the three-dimensional distribution of the internal temperature and multiple preset functions.

[0029] Optionally, the function acquisition unit includes:

[0030] The relation function acquisition subunit is used to acquire a preset relation function corresponding to the preset value range based on the preset value range into which the target running parameter falls, wherein the target running parameter is one of the running parameters;

[0031] The weight acquisition subunit is used to determine the target weights of the target operating parameters;

[0032] The preset function acquisition sub-unit is used to obtain the product of the target weight and the preset relationship function as the preset function corresponding to the target running parameters.

[0033] Optionally, the second distribution acquisition unit includes:

[0034] The function addition subunit is used to add the multiple preset functions and use the result of the addition as the objective function of temperature and gaseous alkali metal concentration under the current operating conditions. In the objective function, temperature is the independent variable and gaseous alkali metal concentration is the dependent variable.

[0035] A regional temperature acquisition subunit is used to determine the temperature of a target region based on the three-dimensional distribution of the internal temperature. The target region is a region composed of at least one grid region in the three-dimensional distribution of the internal temperature.

[0036] The regional concentration acquisition subunit is used to substitute the temperature of the target region into the objective function to obtain the gaseous alkali metal concentration corresponding to the target region.

[0037] The concentration distribution acquisition subunit is used to map the gaseous alkali metal concentrations corresponding to all target regions to the corresponding target regions, thereby obtaining the three-dimensional distribution of the internal gaseous alkali metal concentrations.

[0038] Optional, also includes:

[0039] The region determination unit is used to determine regions where the concentration of gaseous alkali metals is higher than a concentration threshold as high-concentration regions based on the three-dimensional distribution of the internal gaseous alkali metal concentration, where the concentration threshold is the concentration at which gaseous alkali metals condense.

[0040] A cooling unit is used to reduce the internal temperature of the high-concentration area in order to reduce the gaseous alkali metal concentration in the high-concentration area.

[0041] An electronic device, comprising a memory and a processor;

[0042] The memory is used to store programs;

[0043] The processor is used to execute the program to implement each step of the gas phase alkali metal concentration acquisition method described above.

[0044] A readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the gaseous alkali metal concentration acquisition method described above.

[0045] This application discloses a method, system, electronic device, and readable storage medium for obtaining the concentration of gaseous alkali metals. The method can determine the three-dimensional distribution of the internal gaseous alkali metal concentration of a high-alkali coal boiler based on multiple operating parameters under the current operating conditions. This facilitates the reduction of temperature in high-concentration areas based on the three-dimensional distribution of the internal gaseous alkali metal concentration, thereby reducing the volatilization of alkali metals in those areas and lowering the gaseous alkali metal concentration. This can further reduce the agglomeration of gaseous alkali metals and the formation of low-temperature eutectic, effectively improving the safety and stability of the high-alkali coal boiler operation. Attached Figure Description

[0046] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0047] Figure 1 A schematic flowchart of a method for obtaining gaseous alkali metal concentration provided in an embodiment of this application;

[0048] Figure 2 This is a schematic diagram of a gas-phase alkali metal concentration acquisition system provided in an embodiment of this application;

[0049] Figure 3This is a hardware structure block diagram of an electronic device provided in an embodiment of this application. Detailed Implementation

[0050] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0051] The main influencing factors on the concentration of gaseous alkali metals in high-alkali boilers include furnace temperature, residence time, excess air coefficient, and combustion atmosphere. Studies have found that under the same coal quality conditions, the furnace temperature changes with the boiler load, and the concentration of gaseous alkali metals in the key gaseous alkali metal region shows a positive correlation with the furnace temperature. This application combines online monitoring of the concentration of gaseous alkali metals in the key gaseous alkali metal region of the furnace with numerical simulation of boiler combustion. Based on actual measurement data and numerical simulation data from multiple operating conditions, a database is established to fit the functional relationship between alkali metal concentration and temperature.

[0052] In recent years, numerous studies have emerged on simulating in-furnace slagging, primarily targeting pulverized coal boilers and biomass combustion furnaces. However, research on simulating in-furnace alkali metal migration is severely lacking. Although some studies have been conducted, there is a lack of substantial data to verify their accuracy. Conversely, numerical simulations of combustion in large boilers have been successfully applied to the prediction and development of multiple boilers and have been validated. Therefore, this application uses numerical simulations of boiler combustion (operating parameters) as an intermediate transformation, with temperature as an intermediate parameter, to ultimately predict the three-dimensional distribution of gaseous alkali metal mass concentration inside the boiler.

[0053] like Figure 1 As shown in the embodiments of this application, a method for obtaining the concentration of gaseous alkali metals is provided, which may include:

[0054] S10. Obtain multiple operating parameters of the high-alkali coal boiler under its current operating conditions.

[0055] The operating condition of a high-alkali coal boiler refers to its operating status and performance during the combustion of high-alkali coal. Operating parameters refer to the operating conditions related to the high-alkali coal boiler. Optionally, operating parameters may include: air volume, air temperature, coal quantity, boiler load, coal quality fed into the furnace, mill combination mode, etc. The values ​​of multiple operating parameters corresponding to each operating condition of the high-alkali coal boiler can be different. This embodiment can monitor the current operating condition of the high-alkali coal boiler through an automated control system, monitoring and recording the boiler's operating parameters in real time. Alternatively, professional personnel can conduct on-site monitoring of the high-alkali coal boiler, using various instruments and tools to measure the operating parameters under the current operating condition.

[0056] S11. Input multiple operating parameters into the preset temperature prediction model to obtain the three-dimensional distribution of the internal temperature of the current high-alkali coal boiler.

[0057] The preset temperature prediction model can be a pre-trained boiler combustion simulation model. In this embodiment, the preset temperature prediction model is applicable to all boilers burning high-alkali fuels. This embodiment can first establish a boiler combustion simulation model, and then train the model based on boiler data from the key region of gaseous alkali metals to improve the prediction accuracy of the boiler combustion simulation model (this accuracy can be improved by refining the computational region grid in the boiler combustion simulation model). The key region of gaseous alkali metals can be the combustion region above the uppermost burner and below the flame deflector in a high-alkali coal boiler. In this key region, gaseous alkali metals are prone to condensation.

[0058] Specifically, this embodiment can collect multiple operating parameters under various high-alkali coal boiler operating conditions, and data such as the temperature of the key gaseous alkali metal region of the boiler under these multiple operating parameters. The data collection methods can include data collection, on-site collection, and data analysis. The boiler combustion simulation model calculates the three-dimensional distribution of the internal temperature of the entire boiler, especially the key gaseous alkali metal region, through numerical simulation and the collected data. This embodiment trains the calculation accuracy of the boiler combustion simulation model using a large amount of collected data from the key gaseous alkali metal region, resulting in the preset temperature prediction model in this embodiment. The input to the preset temperature prediction model in this embodiment can be multiple operating parameters under high-alkali coal boiler operating conditions, and the output can be the three-dimensional distribution of the internal temperature of the high-alkali coal boiler. Of course, the preset temperature prediction model can be continuously updated to improve accuracy.

[0059] The three-dimensional temperature distribution can refer to the temperature field of a high-alkali coal boiler, which can display the temperature of various regions inside the boiler.

[0060] S12. Determine the preset value range into which each operating parameter falls. Each preset value range is pre-set with a preset relationship function to characterize the functional relationship between temperature and gaseous alkali metal concentration.

[0061] The preset value range can be the range of values ​​for the operating parameters. Each operating parameter can have multiple value ranges, and each value range can correspond to a preset relationship function used to characterize the functional relationship between temperature and gaseous alkali metal concentration. The preset relationship function can be a functional relationship between temperature and gaseous alkali metal concentration fitted based on a large amount of data on temperature and gaseous alkali metal concentration under multiple operating conditions (the values ​​of the operating parameters are different under different operating conditions).

[0062] Specifically, this embodiment can obtain the three-dimensional temperature distribution under different operating conditions through the aforementioned preset temperature prediction model, thereby obtaining the temperature of the key gaseous alkali metal region (which can also be directly obtained from the gaseous alkali metal online monitoring system); the gaseous alkali metal concentration in the key gaseous alkali metal region is obtained through the gaseous alkali metal online monitoring system. Thus, a large amount of data on the correspondence between temperature and gaseous alkali metal concentration in the key gaseous alkali metal region can be obtained, and a basic database can be established to store this correspondence data. After obtaining the database of temperature and gaseous alkali metal concentration, this embodiment can fit the data in the database to obtain the functional relationship between temperature and gaseous alkali metal concentration.

[0063] In the function fitting process, this embodiment can first divide each operating parameter into multiple preset value ranges. For example, parameter A can be divided into 'a' preset value ranges, and operating parameter B can be divided into 'b' preset value ranges. After dividing each operating parameter into multiple preset value ranges, this embodiment can obtain multiple sets of temperature and gaseous alkali metal concentration correspondence data when the operating parameter falls within the preset value range from the basic database, and fit the function relationship of the preset value range. For example, for operating parameter A, within the first preset value range, multiple sets of temperature and gaseous alkali metal concentration correspondence data when operating parameter A falls within the first preset value range can be obtained from the basic database, and a preset relationship function corresponding to the first preset value range can be fitted. Of course, this embodiment can continuously update the database to improve the accuracy of the function relationship.

[0064] The online monitoring system for gaseous alkali metals can consist of a dedicated spectral probe, a monitoring host, and dedicated measurement software. This system measures the spectral data of gaseous alkali metals using the dedicated spectral probe and transmits the data to the monitoring cabinet in the central control room. The industrial computer and software in the monitoring cabinet then provide the temperature and concentration of gaseous alkali metals in the boiler area online and send this information to the unit's DCS (Distributed Control System). The installation location and number of dedicated spectral probes can be determined based on factors such as furnace structure, combustion method, and fuel characteristics.

[0065] Due to the high cost of dedicated spectral probes, their number is limited, making it difficult to obtain the three-dimensional distribution of gaseous alkali metal concentration inside a high-alkali coal boiler. Therefore, this embodiment mainly sets up a small number of dedicated spectral probes in the key gaseous alkali metal region of the high-alkali coal boiler to obtain the gaseous alkali metal concentration in the key region, which is used for the subsequent fitting process of the functional relationship between temperature and gaseous alkali metal concentration.

[0066] S13. Determine the preset function corresponding to each operating parameter based on the preset value range into which each operating parameter falls.

[0067] Since the values ​​of operating parameters differ under different operating conditions, the values ​​of each operating parameter can be determined based on the current operating conditions of the high-alkali coal boiler. A preset value range within which each operating parameter falls can be determined, and a preset relational function corresponding to that range can be determined. This preset relational function then determines the preset function corresponding to the operating parameter. Optionally, the product of the preset relational function and the operating parameter weights can be used as the preset function for the operating parameter; alternatively, the preset relational function can be directly used as the preset function for the operating parameter.

[0068] S14. Based on the three-dimensional distribution of internal temperature and multiple preset functions, generate the three-dimensional distribution of the internal gaseous alkali metal concentration of the current high-alkali coal boiler.

[0069] Among them, the three-dimensional distribution of gaseous alkali metal concentration can be used as the concentration distribution field of high-alkali coal boiler, which can show the gaseous alkali metal concentration in various regions inside the high-alkali coal boiler.

[0070] This embodiment can sum multiple preset functions and use the sum as the target function for temperature and gaseous alkali metal concentration under the current operating conditions. In the target function, temperature is the independent variable and gaseous alkali metal concentration is the dependent variable. The temperature of the target region is determined based on the three-dimensional distribution of the internal temperature. The target region is a region composed of at least one grid region in the three-dimensional distribution of the internal temperature. The temperature of the target region is substituted into the target function to obtain the gaseous alkali metal concentration corresponding to the target region. The gaseous alkali metal concentrations corresponding to all target regions are mapped to the corresponding target regions to obtain the three-dimensional distribution of the internal gaseous alkali metal concentration.

[0071] The objective function can be expressed in the following form:

[0072] ρ=f1(T)+f2(T)+f3(T)+...+f n (T)

[0073] Where ρ can be the concentration of the gaseous alkali metal, T can be the temperature; f1(T) can be the preset function corresponding to the first operating parameter; f2(T) can be the preset function corresponding to the second operating parameter; f3(T) can be the preset function corresponding to the third operating parameter; f n (T) can be the preset function corresponding to the nth running parameter.

[0074] This embodiment allows the temperature of the target region to be substituted into the objective function to obtain the gaseous alkali metal concentration in the target region. The target region can be a region composed of at least one grid region in the three-dimensional temperature distribution of the interior; the temperature of the target region can be the average temperature of at least one grid region, or the maximum temperature of at least one grid region. When mapping the gaseous alkali metal concentration, the gaseous alkali metal concentration corresponding to the target region can be set to the gaseous alkali metal concentration of all grid regions in the target region; alternatively, the gaseous alkali metal concentration corresponding to the target region can be set to the gaseous alkali metal concentration of the central grid region in the target region. After the gaseous alkali metal concentration mapping is completed for all target regions in the three-dimensional temperature distribution of the interior, the three-dimensional distribution of the internal gaseous alkali metal concentration can be obtained.

[0075] This application discloses a method for obtaining the concentration of gaseous alkali metals. This method can determine the three-dimensional distribution of the internal gaseous alkali metal concentration of a high-alkali coal boiler based on multiple operating parameters under its current operating conditions. This allows for the reduction of temperature in high-concentration areas based on the internal three-dimensional distribution of the gaseous alkali metal concentration, thereby reducing the volatilization of alkali metals in those areas and lowering the gaseous alkali metal concentration. Furthermore, it can reduce the agglomeration of gaseous alkali metals and the formation of low-temperature eutectic, effectively improving the safety and stability of the high-alkali coal boiler operation.

[0076] According to another method for obtaining gaseous alkali metal concentration provided in the embodiments of this application, Figure 1 Step S13 shown may include steps one through three:

[0077] Step 1: Based on the preset value range into which the target running parameter falls, obtain the preset relation function corresponding to the preset value range. The target running parameter is one of the running parameters.

[0078] Step 2: Determine the target weights for the target operating parameters;

[0079] Step 3: The product of the target weight and the preset relationship function is used as the preset function corresponding to the target running parameters.

[0080] Each operating parameter can have a corresponding weight, and the sum of the weights of all operating parameters under a given operating condition can be 1. The weight represents the degree of influence of the operating parameter on temperature and gaseous alkali metal concentration. Since in this embodiment, the preset function can be the product of the target weight and the preset relationship function, the above target function can be expressed as follows:

[0081] ρ=W A ×f A (T)+W B ×f B (T)+W C ×f C (T)+...+W N ×f N (T)

[0082] Where ρ can be the concentration of the gaseous alkali metal, and T can be the temperature; W A The weights for the running parameter A can be f; A (T) can be a preset relational function corresponding to the preset value range into which the running parameter A falls; W B This can be the weight of the running parameter B; f B (T) can be a preset relational function corresponding to the preset value range into which the running parameter B falls; W C The weights can be the running parameter C; f C (T) can be a preset relational function corresponding to the preset value range into which the running parameter C falls; W N The weights can be the running parameter C; f N (T) can be a preset relational function corresponding to the preset value range into which the running parameter N falls.

[0083] In another method for obtaining gaseous alkali metal concentration according to an embodiment of this application, the method may further include:

[0084] Based on the three-dimensional distribution of gaseous alkali metal concentrations within the interior, regions where the gaseous alkali metal concentration exceeds a concentration threshold are defined as high-concentration regions. The concentration threshold is the concentration at which gaseous alkali metals condense.

[0085] Lowering the internal temperature of high-concentration areas can reduce the concentration of gaseous alkali metals in those areas.

[0086] Once the three-dimensional distribution of the internal gaseous alkali metal concentration is obtained, the high-concentration region (the region where the gaseous alkali metal concentration is higher than the concentration threshold) in the high-alkali coal boiler can be identified. In this embodiment, the adjustment method of the high-alkali coal boiler can be adjusted to reduce the temperature of the high-concentration region, thereby reducing the gaseous alkali metal concentration in the high-concentration region to below the concentration threshold as much as possible, reducing the agglomeration of gaseous alkali metal, reducing the generation of low-temperature eutectic, and improving the safety and stability of the high-alkali coal boiler.

[0087] Thus, this application provides a complete embodiment. When predicting the three-dimensional distribution of gaseous alkali metal concentration under the first operating condition of a high-alkali coal boiler, the first operating condition includes multiple operating parameters (coal quality, residence time of gaseous alkali metals in the furnace, boiler load, coal quantity, and air volume).

[0088] First, based on multiple operating parameters, the three-dimensional distribution of the internal temperature of the high-alkali coal boiler is obtained using the preset temperature prediction model established in this embodiment. Second, the objective function relationship between the gaseous alkali metal concentration and temperature in the furnace is obtained under the first operating condition.

[0089] When the coal quality value falls within range a, the corresponding preset relational function is f1(T), and the weight of coal quality is A; when the residence time of gaseous alkali metals in the furnace falls within range b, the corresponding preset relational function is f2(T), and the weight of gaseous alkali metal residence time in the furnace is B; when the boiler load value falls within range c, the corresponding preset relational function is f3(T), and the weight of boiler load is C; when the coal quantity value falls within range d, the corresponding preset relational function is f4(T), and the weight of coal quantity is D; when the air quantity value falls within range e, the corresponding preset relational function is f5(T), and the weight of air quantity is E. Therefore, the objective function relation can be:

[0090] ρ=A×f1(T)+B×f2(T)+C×f3(T)+D×f4(T)+E×f5(T)

[0091] By substituting the temperatures of each target region into the aforementioned objective function, the gaseous alkali metal concentration in each target region can be obtained. Mapping the gaseous alkali metal concentration in each target region to the corresponding target region yields the three-dimensional distribution of the gaseous alkali metal concentration inside the high-alkali coal boiler.

[0092] Corresponding to the method for obtaining gaseous alkali metal concentration provided in the embodiments of this application, the embodiments of this application also provide a system for obtaining gaseous alkali metal concentration.

[0093] like Figure 2 As shown in the embodiments of this application, a gaseous alkali metal concentration acquisition system is also provided, which may include:

[0094] The parameter acquisition unit 100 is used to acquire multiple operating parameters of the high-alkali coal boiler under the current operating conditions.

[0095] The first distribution acquisition unit 110 is used to input multiple operating parameters into a preset temperature prediction model to obtain the three-dimensional distribution of the internal temperature of the current high-alkali coal boiler.

[0096] The range determination unit 120 is used to determine the preset value range into which each operating parameter falls. Each preset value range is pre-set with a preset relationship function to characterize the functional relationship between temperature and gaseous alkali metal concentration.

[0097] The function acquisition unit 130 is used to determine the preset function corresponding to each running parameter based on the preset value range into which each running parameter falls.

[0098] The second distribution acquisition unit 140 is used to generate the three-dimensional distribution of the internal gas phase alkali metal concentration of the current high-alkali coal boiler based on the three-dimensional distribution of the internal temperature and multiple preset functions.

[0099] In another gas-phase alkali metal concentration acquisition system provided in an embodiment of this application, the function acquisition unit 130 may include:

[0100] The relation function acquisition sub-unit is used to acquire the preset relation function corresponding to the preset value range based on the preset value range into which the target running parameter falls. The target running parameter is one of the running parameters.

[0101] The weight acquisition subunit is used to determine the target weights of the target operating parameters;

[0102] The preset function obtains the sub-unit, which is used to take the product of the target weight and the preset relationship function as the preset function corresponding to the target running parameters.

[0103] In another gaseous alkali metal concentration acquisition system provided according to an embodiment of this application, the second distribution acquisition unit 140 may include:

[0104] The function addition subunit is used to add multiple preset functions and use the result of the addition as the objective function of temperature and gaseous alkali metal concentration under the current operating conditions. In the objective function, temperature is the independent variable and gaseous alkali metal concentration is the dependent variable.

[0105] The region temperature acquisition sub-unit is used to determine the temperature of the target region based on the three-dimensional distribution of the internal temperature. The target region is a region consisting of at least one grid region in the three-dimensional distribution of the internal temperature.

[0106] The regional concentration acquisition subunit is used to substitute the temperature of the target region into the objective function to obtain the gaseous alkali metal concentration of the target region.

[0107] The concentration distribution acquisition sub-unit is used to map the gaseous alkali metal concentrations corresponding to all target regions to the corresponding target regions, thereby obtaining the three-dimensional distribution of the internal gaseous alkali metal concentrations.

[0108] According to another gaseous alkali metal concentration acquisition system provided in the embodiments of this application, the gaseous alkali metal concentration acquisition system may further include:

[0109] The region determination unit is used to determine regions where the concentration of gaseous alkali metals is higher than a concentration threshold as high-concentration regions based on the three-dimensional distribution of gaseous alkali metal concentrations within the region. The concentration threshold is the concentration at which gaseous alkali metals condense.

[0110] The cooling unit is used to reduce the internal temperature of the high-concentration area in order to reduce the concentration of gaseous alkali metals in the high-concentration area.

[0111] like Figure 3 As shown, this application provides an electronic device 70, including at least one processor 701, and at least one memory 702 and a bus 703 connected to the processor 701; wherein the processor 701 and the memory 702 communicate with each other through the bus 703; the processor 701 is used to call program instructions in the memory 702 to execute the above-described method for obtaining the concentration of gaseous alkali metals. The electronic device 70 in this document may be a server, PC, etc.

[0112] This application also provides a readable storage medium storing a computer program thereon. When the computer program is executed by a processor, it implements each step of any of the above-described methods for obtaining the concentration of gaseous alkali metals.

[0113] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0114] In a typical configuration, the device includes one or more processors (CPUs), memory, and a bus. The device may also include input / output interfaces, network interfaces, etc.

[0115] Memory may include non-persistent memory in computer-readable storage media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM, and memory includes at least one memory chip. Memory is an example of a computer-readable medium.

[0116] Computer-readable storage media include both permanent and non-permanent, removable and non-removable media that can store information by any method or technology. Information can be computer-readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, disk storage or other magnetic storage devices, or any other non-transferable medium that can be used to store information accessible by a computing device. As defined herein, computer-readable media does not include transient computer-readable media, such as modulated data signals and carrier waves.

[0117] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied 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.

[0118] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0119] The various embodiments in this specification are described in a related manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the apparatus embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions of the method embodiments.

[0120] The above are merely embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A method for obtaining the concentration of gaseous alkali metals, characterized in that, The method for obtaining the concentration of gaseous alkali metals includes: Obtain multiple operating parameters of a high-alkali coal boiler under its current operating conditions; The multiple operating parameters are input into a preset temperature prediction model to obtain the three-dimensional distribution of the internal temperature of the current high-alkali coal boiler. Determine the preset value range into which each operating parameter falls, and each preset value range is pre-set with a preset relationship function to characterize the functional relationship between temperature and the concentration of the gaseous alkali metal; Based on the preset value range into which each operating parameter falls, determine the preset function corresponding to each operating parameter; Based on the three-dimensional distribution of the internal temperature and multiple preset functions, the three-dimensional distribution of the internal gaseous alkali metal concentration of the current high-alkali coal boiler is generated. The step of determining the preset function corresponding to each operating parameter based on the preset value range into which each operating parameter falls includes: Based on the preset value range into which the target operating parameter falls, a preset relationship function corresponding to the preset value range is obtained, wherein the target operating parameter is one of the operating parameters; Determine the target weights for the target operating parameters; The product of the target weight and the preset relationship function is used as the preset function corresponding to the target running parameters; The step of generating the three-dimensional distribution of the internal gaseous alkali metal concentration of the current high-alkali coal boiler based on the three-dimensional distribution of the internal temperature and multiple preset functions includes: The multiple preset functions are added together, and the result of the addition is used as the objective function of temperature and gaseous alkali metal concentration under the current operating conditions. In the objective function, temperature is the independent variable and gaseous alkali metal concentration is the dependent variable. The temperature of the target region is determined based on the three-dimensional distribution of the internal temperature, wherein the target region is a region consisting of at least one grid region in the three-dimensional distribution of the internal temperature; Substitute the temperature of the target region into the objective function to obtain the gaseous alkali metal concentration corresponding to the target region; The gaseous alkali metal concentrations corresponding to all target regions are mapped to the corresponding target regions to obtain the three-dimensional distribution of the internal gaseous alkali metal concentrations.

2. The method for obtaining gaseous alkali metal concentration according to claim 1, characterized in that, Also includes: Based on the three-dimensional distribution of the internal gaseous alkali metal concentration, the region where the gaseous alkali metal concentration is higher than the concentration threshold is defined as a high concentration region, where the concentration threshold is the concentration at which gaseous alkali metals condense. Lowering the internal temperature of the high-concentration region reduces the gaseous alkali metal concentration in that region.

3. A gas-phase alkali metal concentration acquisition system, characterized in that, The gas-phase alkali metal concentration acquisition system includes: The parameter acquisition unit is used to acquire multiple operating parameters of the high-alkali coal boiler under the current operating conditions. The first distribution acquisition unit is used to input the multiple operating parameters into a preset temperature prediction model to obtain the three-dimensional distribution of the internal temperature of the current high-alkali coal boiler. The range determination unit is used to determine the preset value range into which each operating parameter falls. Each preset value range is pre-set with a preset relationship function to characterize the functional relationship between temperature and the concentration of the gaseous alkali metal. The function acquisition unit is used to determine the preset function corresponding to each running parameter based on the preset value range into which each running parameter falls; The second distribution acquisition unit is used to generate the three-dimensional distribution of the internal gaseous alkali metal concentration of the current high-alkali coal boiler based on the three-dimensional distribution of the internal temperature and multiple preset functions. The function acquisition unit includes: The relation function acquisition subunit is used to acquire a preset relation function corresponding to the preset value range based on the preset value range into which the target running parameter falls, wherein the target running parameter is one of the running parameters; The weight acquisition subunit is used to determine the target weights of the target operating parameters; A preset function acquisition subunit is used to obtain the product of the target weight and the preset relationship function as the preset function corresponding to the target running parameters; The second distribution acquisition unit includes: The function addition subunit is used to add the multiple preset functions and use the result of the addition as the objective function of temperature and gaseous alkali metal concentration under the current operating conditions. In the objective function, temperature is the independent variable and gaseous alkali metal concentration is the dependent variable. A regional temperature acquisition subunit is used to determine the temperature of a target region based on the three-dimensional distribution of the internal temperature. The target region is a region composed of at least one grid region in the three-dimensional distribution of the internal temperature. The regional concentration acquisition subunit is used to substitute the temperature of the target region into the objective function to obtain the gaseous alkali metal concentration corresponding to the target region. The concentration distribution acquisition subunit is used to map the gaseous alkali metal concentrations corresponding to all target regions to the corresponding target regions, thereby obtaining the three-dimensional distribution of the internal gaseous alkali metal concentrations.

4. The gas-phase alkali metal concentration acquisition system according to claim 3, characterized in that, Also includes: The region determination unit is used to determine regions where the concentration of gaseous alkali metals is higher than a concentration threshold as high-concentration regions based on the three-dimensional distribution of the internal gaseous alkali metal concentration, where the concentration threshold is the concentration at which gaseous alkali metals condense. A cooling unit is used to reduce the internal temperature of the high-concentration area in order to reduce the gaseous alkali metal concentration in the high-concentration area.

5. An electronic device, characterized in that, Including memory and processor; The memory is used to store programs; The processor is used to execute the program to implement each step of the gas phase alkali metal concentration acquisition method as described in any one of claims 1-2.

6. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements each step of the gaseous alkali metal concentration acquisition method as described in any one of claims 1-2.

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