Air distribution mode determination method and device, equipment, medium and program product

Abstract

The invention discloses an air distribution mode determining method and device, equipment, a medium and a program product. The method comprises the steps that a target mixed combustion working condition is obtained; in the simulation model of the target boiler, simulation boiler parameters corresponding to the multiple air distribution modes under the target co-combustion working condition are determined; according to the simulation boiler parameters corresponding to the multiple air distribution modes under the target co-combustion working condition, a target air distribution mode corresponding to the target co-combustion working condition is determined; wherein the target air distribution mode is used for indicating the corresponding air speed proportion of primary air, secondary air and over fire air when the combustion efficiency of the target boiler is highest. According to the scheme, the situation that the combustion effect of the coal-fired unit on fuel is greatly reduced when air is supplied to the boiler according to the initial air distribution mode designed by the coal-fired unit after the coal-fired unit carries out blending combustion on biomass is avoided, so that the combustion efficiency of the target boiler is improved, and then the power generation efficiency of the coal-fired unit is improved.

Description

Technical Field

[0001] The present application relates to the technical field of biomass blending, and in particular to a method, device, equipment, medium and program product for determining an air distribution mode. Background Art

[0002] Biomass is a carbon-neutral renewable fuel with zero carbon emissions, which has great potential in low-carbon emission reduction. Using biomass as a power generation fuel can significantly reduce carbon dioxide emissions and has the advantages of energy saving and environmental protection. However, since biomass power plants are in their infancy, their power generation efficiency is much lower than that of traditional coal-fired power plants and cannot meet the current increasing electricity demand.

[0003] At present, a large number of coal-fired units are using a mixture of coal and biomass in different proportions to generate electricity on the basis of the original coal-fired power generation to meet the power generation demand and the requirements of low-carbon coal-fired power generation.

[0004] However, due to the large differences in the combustion characteristics of biomass fuel and coal, after the coal-fired unit is mixed with biomass, it deviates far from the design intention of the coal-fired unit designed for coal burning. When air is supplied to the boiler according to the initial air distribution method designed for the coal-fired unit, the combustion effect of the fuel by the coal-fired unit will be greatly reduced, thereby reducing the power generation efficiency. Summary of the invention

[0005] The present application provides a method, device, equipment, medium and program product for determining an air distribution mode, so as to solve the problem in the prior art that after the coal-fired unit is mixed with biomass, because it deviates far from the design intention of the coal-fired unit designed for coal burning, when air is supplied to the boiler according to the initial air distribution mode designed for the coal-fired unit, the combustion effect of the fuel of the coal-fired unit is greatly reduced, thereby reducing the power generation efficiency.

[0006] In a first aspect, the present application provides a method for determining an air distribution mode, the method comprising:

[0007] Obtaining a target co-combustion operating condition; wherein the target co-combustion operating condition is used to characterize the co-combustion mode of pulverized coal and biomass in a target boiler;

[0008] In the simulation model of the target boiler, the simulated boiler parameters corresponding to the multiple air distribution modes under the target co-combustion condition are determined; wherein the simulation model is a computational fluid dynamics simulation model of the target boiler, the simulated boiler parameters are used to characterize the simulated combustion efficiency of the simulation model, and the air distribution mode includes the wind speed ratios of the primary air, secondary air and burnout air of the target boiler;

[0009] According to the simulated boiler parameters corresponding to the multiple air distribution modes under the target co-combustion condition, the target air distribution mode corresponding to the target co-combustion condition is determined; wherein the target air distribution mode is used to indicate the wind speed ratio of the primary air, secondary air and burnout air corresponding to the target boiler when the combustion efficiency is the highest.

[0010] In a second aspect, the present application provides a device for determining an air distribution mode, the device comprising:

[0011] An acquisition module, used for acquiring a target co-combustion operating condition; wherein the target co-combustion operating condition is used for characterizing the co-combustion mode of pulverized coal and biomass in a target boiler;

[0012] A parameter determination module, used to determine, in the simulation model of the target boiler, the simulated boiler parameters corresponding to the multiple air distribution modes under the target co-combustion condition; wherein the simulation model is a computational fluid dynamics simulation model of the target boiler, the simulated boiler parameters are used to characterize the simulated combustion efficiency of the simulation model, and the air distribution mode includes the wind speed ratios of the primary air, secondary air and burnout air of the target boiler;

[0013] The air distribution mode determination module is used to determine the target air distribution mode corresponding to the target co-combustion condition according to the simulated boiler parameters corresponding to the multiple air distribution modes under the target co-combustion condition; wherein the target air distribution mode is used to indicate the wind speed ratio of the primary air, secondary air and burnout air corresponding to the target boiler when the combustion efficiency is the highest.

[0014] In a third aspect, the present application provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the method for determining the air distribution mode as described in any embodiment of the present application is implemented.

[0015] In a fourth aspect, the present application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the method for determining the air distribution mode as described in any embodiment of the present application.

[0016] In a fifth aspect, the present application provides a computer program product, including a computer program, which, when executed by a processor, implements the method for determining the air distribution mode as described in any embodiment of the present application.

[0017] The scheme of the present application obtains a target co-combustion condition; wherein the target co-combustion condition is used to characterize the co-combustion mode of pulverized coal and biomass in a target boiler; in a simulation model of the target boiler, simulated boiler parameters corresponding to a plurality of air distribution modes under the target co-combustion condition are determined; wherein the simulation model is a computational fluid dynamics simulation model of the target boiler, the simulated boiler parameters are used to characterize the simulated combustion efficiency of the simulation model, and the air distribution mode includes the wind speed ratio of the primary air, secondary air and burnout air of the target boiler; according to the simulated boiler parameters corresponding to the plurality of air distribution modes under the target co-combustion condition, the target air distribution mode corresponding to the target co-combustion condition is determined; wherein the target air distribution mode is used to indicate the wind speed ratio of the primary air, secondary air and burnout air corresponding to the target boiler when the combustion efficiency is the highest. That is, the solution of the present application simulates the boiler parameters of the coal-fired unit after burning biomass in a simulation model to obtain the target air distribution method with the highest combustion efficiency of the target boiler under the target co-burning condition, thereby avoiding the situation where the combustion effect of the coal-fired unit on the fuel is greatly reduced when air is supplied to the boiler according to the initial air distribution method designed for the coal-fired unit after burning biomass, thereby improving the combustion efficiency of the target boiler and then improving the power generation efficiency of the coal-fired unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a flow chart of the method for determining the air distribution mode provided by the present application;

[0020] Figure 2 is another flow chart of the method for determining the air distribution mode provided by the present application;

[0021] Figure 3 It is a structural schematic diagram of the air distribution mode determination device provided by the present application;

[0022] Figure 4 It is a structural schematic diagram of the electronic device provided by this application. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0024] Figure 1 The present invention provides a flow chart of a method for determining a wind distribution mode, which can be performed by a device for determining a wind distribution mode, which can be implemented in software and / or hardware. In a specific embodiment, the device can be applied to an electronic device, which can be a computer. The following embodiments will be described by taking the application of the device in an electronic device as an example, referring to Figure 1 , the method may specifically include the following steps:

[0025] Step 101, obtaining a target co-combustion condition.

[0026] Among them, the target co-combustion condition is used to characterize the co-combustion mode of pulverized coal and biomass in the target boiler.

[0027] Specifically, the co-combustion condition refers to the way biomass and pulverized coal are co-combusted, such as the biomass co-combustion ratio under a certain boiler load, or the biomass co-combustion position in the boiler, etc. For example, the co-combustion condition is that the biomass co-combustion ratio is 15%, or the biomass co-combustion position in the boiler is at the burner inlet of the target boiler. The method for obtaining the target co-combustion condition can be that the electronic device executing this embodiment sends a request to obtain the target co-combustion condition to the user device of the staff, and the received information is returned by the user device of the staff. It can also be that the electronic device executing this embodiment receives the target co-combustion condition directly sent by the user device of the staff, and this application does not limit this.

[0028] Optionally, the target co-combustion operating condition includes a target co-combustion ratio of biomass or a target co-combustion position of biomass in a target boiler.

[0029] Specifically, the target co-combustion ratio is the ratio of biomass to pulverized coal for co-combustion, such as 10%, 50% or 90%, etc. The target co-combustion position is the position of the biomass in the target boiler, such as the inlet position of the burner of the boiler.

[0030] Optionally, before executing step 101, steps 11 and 12 may also be executed.

[0031] Step 11, obtaining boiler parameters of the target boiler.

[0032] Specifically, the boiler parameters of the target boiler refer to parameters that can characterize the shape characteristics of the target boiler, such as the number of wind chamber layers included in the target boiler, the shape of each wind chamber layer, and the overall shape of the target boiler. The boiler parameters of the target boiler can be obtained by sending a request for obtaining the boiler parameters of the target boiler to the user device of the staff member using the electronic device executing this embodiment, and receiving information returned by the user device of the staff member. Alternatively, the electronic device executing this embodiment receives the boiler parameters of the target boiler directly sent by the user device of the staff member, and this application does not limit this.

[0033] Step 12: establishing an initial simulation model of the target boiler according to the boiler parameters of the target boiler, and adjusting the parameters of the initial simulation model according to the historical combustion data of the target boiler to obtain the simulation model of the target boiler.

[0034] Specifically, the initial simulation model of the target boiler is established according to the boiler parameters of the target boiler, that is, a physical model of a boiler that is completely consistent with the shape and structure of the target boiler is built according to the boiler parameters of the target boiler. The historical combustion data of the target boiler refers to the parameters of the internal fluid changes of the target boiler during the historical combustion process, such as the boiler historical state data of the target boiler, fuel combustion stage parameters, ash melting characteristic parameters, fuel combustion reaction characteristic parameters, coal quality parameters, primary air flow rate, secondary air flow rate, coal powder concentration, coal powder flow rate and coal powder absolute mass flow rate, furnace flame physical characteristic parameters, the corresponding relationship between flame characteristics and combustion conditions, combustion conditions, boiler heating surface heat flow distribution and temperature distribution characteristics, etc. The parameters of the initial simulation model are adjusted according to the historical combustion data of the target boiler, that is, a fuel combustion model inside the target boiler is established in the initial simulation model, so as to obtain a computational fluid dynamics (CFD) simulation model of the target boiler.

[0035] Step 102: In the simulation model of the target boiler, the simulation boiler parameters corresponding to the multiple air distribution modes under the target co-firing condition are determined.

[0036] The simulation model is a computational fluid dynamics simulation model of the target boiler, the simulated boiler parameters are used to characterize the simulated combustion efficiency of the simulation model, and the air distribution method includes the wind speed ratios of the primary air, secondary air and burnout air of the target boiler.

[0037] Specifically, the simulated boiler parameters are parameters that can characterize the simulated combustion efficiency of the simulation model, such as the pulverized coal combustion temperature distribution, heat load distribution, flue gas component concentration distribution, pulverized coal combustion stroke trajectory, heating surface contamination and slagging distribution, furnace outlet carbon-containing gas concentration distribution, fly ash carbon content, nitrogen-containing gas concentration distribution, and sulfur-containing gas concentration distribution. For example, the simulated boiler parameters include the velocity field distribution of the fluid flow inside the simulated boiler, the temperature field distribution of each surface inside the simulated boiler, and the gas concentration field distribution of multiple gases inside the simulated boiler. In the simulation model of the target boiler, when the target co-combustion working condition is determined, that is, the mixing condition of biomass and pulverized coal inside the simulation model is the mixing condition indicated by the target co-combustion working condition. At this time, air is supplied to the simulation model according to multiple air distribution methods to simulate the changes in the fluid inside different boilers corresponding to different air distribution methods, that is, the combustion conditions of biomass and pulverized coal inside the boiler. After the simulated combustion is completed, the combustion results corresponding to each air distribution method, that is, the simulated boiler parameters, are obtained.

[0038] Step 103, determining a target air distribution method corresponding to the target co-firing operating condition according to the simulated boiler parameters corresponding to the multiple air distribution methods under the target co-firing operating condition.

[0039] The target air distribution method is used to indicate the wind speed ratio of the primary air, secondary air and burnout air corresponding to the target boiler when the combustion efficiency is the highest.

[0040] Specifically, among the simulated boiler parameters corresponding to multiple air distribution modes under the target co-combustion condition, the air distribution mode with the highest combustion efficiency in the simulated combustion effect of biomass and coal powder in the simulation model is determined, and it is determined as the target air distribution mode corresponding to the target co-combustion condition.

[0041] Optionally, step 103 may be implemented through steps 1031 to 1033 .

[0042] Step 1031, determining the combustion efficiency corresponding to each air distribution method according to the simulated boiler parameters corresponding to the multiple air distribution methods under the target co-combustion condition.

[0043] Specifically, the combustion efficiency corresponding to each air distribution method is determined according to the simulated boiler parameters corresponding to the multiple air distribution methods under the target mixed combustion condition, for example, according to the velocity field distribution of the fluid flow inside the simulated boiler, the temperature field distribution of each surface inside the simulated boiler, and the gas concentration field distribution of multiple gases inside the simulated boiler. For example, the more uniform the temperature field distribution of each surface inside the simulated boiler, the higher the combustion efficiency corresponding to the air distribution method, the more uniform the velocity field distribution of the fluid flow inside the simulated boiler, the higher the combustion efficiency corresponding to the air distribution method, and the more uniform the gas concentration field distribution of multiple gases inside the simulated boiler, the higher the combustion efficiency corresponding to the air distribution method. The combustion efficiency is comprehensively considered according to multiple simulated boiler parameters to determine the combustion efficiency corresponding to each air distribution method.

[0044] Step 1032, determining the optimal combustion efficiency according to the combustion efficiency corresponding to each air distribution method.

[0045] Specifically, after the combustion efficiency corresponding to each air distribution mode is obtained, the highest combustion efficiency is determined according to the combustion efficiency corresponding to each air distribution mode, and is taken as the optimal combustion efficiency.

[0046] Step 1033, taking the air distribution method corresponding to the optimal combustion efficiency as the target air distribution method corresponding to the target mixed combustion condition.

[0047] Specifically, after the optimal combustion efficiency is obtained, the air distribution method corresponding to the optimal combustion efficiency is used as the target air distribution method corresponding to the target mixed combustion condition.

[0048] Optionally, after executing step 103, steps 31 to 34 may also be executed.

[0049] Step 31, supply air to the target boiler according to the target air distribution method, and obtain the output boiler parameters of the target boiler.

[0050] Specifically, after the target boiler is supplied with air according to the target air distribution method, the output boiler parameters of the target boiler are obtained. The output boiler parameters are parameters that can characterize the combustion efficiency of the target boiler after the biomass and pulverized coal are actually mixed and burned in the target boiler, and are consistent with the simulation boiler parameters, so as to facilitate the adjustment of the simulation model. For example, the output boiler parameters can be the pulverized coal combustion temperature distribution, heat load distribution, flue gas component concentration distribution, pulverized coal combustion stroke trajectory, heating surface contamination and slagging distribution, furnace outlet carbon-containing gas concentration distribution, fly ash carbon content, nitrogen-containing gas concentration distribution, and sulfur-containing gas concentration distribution.

[0051] Step 32, performing secondary parameter adjustment on the simulation model according to the output boiler parameters and the simulated boiler parameters corresponding to the target air distribution mode.

[0052] Specifically, the output boiler parameters are the actual output results after the target boiler is supplied with air according to the target air distribution method, and the biomass and coal powder are mixed and burned. The simulation boiler parameters corresponding to the target air distribution method are the simulated output results after the target boiler is supplied with air according to the simulated target air distribution method in the simulation model, and the biomass and coal powder are mixed and burned. Therefore, further parameter adjustment of the simulation model according to the output boiler parameters and the simulation boiler parameters corresponding to the target air distribution method can improve the simulation effect of the simulation model, thereby obtaining a simulation model that is more in line with the combustion conditions of the target boiler. The secondary parameter adjustment of the simulation model can be to further refine the physical model of the target boiler, such as improving the dimensional accuracy of the target boiler, or to re-divide the drawing grid of the target boiler during CFD simulation to improve the simulation accuracy of the target boiler, or to adjust the combustion chemistry model, such as adjusting the combustion chemistry model of the carbon element, or to increase the boundary conditions of the combustion model, such as setting the coal powder combustion rate.

[0053] Step 33, using the simulation model after the secondary parameter adjustment as a new simulation model, and determining in the new simulation model new simulation boiler parameters corresponding to a plurality of air distribution modes under the target co-firing condition.

[0054] Specifically, after the secondary parameter adjustment, the simulation effect of the simulation model is improved accordingly, and is more in line with the combustion effect of the real target boiler. At this time, in the new simulation model, the new simulation boiler parameters corresponding to the multiple air distribution modes under the target mixed combustion condition are re-determined.

[0055] Step 34, determining a new target air distribution method corresponding to the target co-combustion operating condition according to the new simulated boiler parameters corresponding to the multiple air distribution methods.

[0056] Specifically, after obtaining the new simulated boiler parameters corresponding to the multiple air distribution modes, the new target air distribution mode with the highest combustion efficiency corresponding to the target mixed combustion condition is determined according to the new simulated boiler parameters corresponding to the multiple air distribution modes. Thus, the new target air distribution mode is determined by the simulation model with improved model accuracy, and the matching degree between the target air distribution mode and the target mixed combustion condition in the target boiler is further improved, thereby improving the combustion efficiency inside the target boiler.

[0057] The scheme of the present application obtains a target co-combustion condition; wherein the target co-combustion condition is used to characterize the co-combustion mode of pulverized coal and biomass in a target boiler; in a simulation model of the target boiler, simulated boiler parameters corresponding to a plurality of air distribution modes under the target co-combustion condition are determined; wherein the simulation model is a computational fluid dynamics simulation model of the target boiler, the simulated boiler parameters are used to characterize the simulated combustion efficiency of the simulation model, and the air distribution mode includes the wind speed ratio of the primary air, secondary air and burnout air of the target boiler; according to the simulated boiler parameters corresponding to the plurality of air distribution modes under the target co-combustion condition, the target air distribution mode corresponding to the target co-combustion condition is determined; wherein the target air distribution mode is used to indicate the wind speed ratio of the primary air, secondary air and burnout air corresponding to the target boiler when the combustion efficiency is the highest. That is, the solution of the present application simulates the boiler parameters of the coal-fired unit after burning biomass in a simulation model to obtain the target air distribution method with the highest combustion efficiency of the target boiler under the target co-burning condition, thereby avoiding the situation where the combustion effect of the coal-fired unit on the fuel is greatly reduced when air is supplied to the boiler according to the initial air distribution method designed for the coal-fired unit after burning biomass, thereby improving the combustion efficiency of the target boiler and then improving the power generation efficiency of the coal-fired unit.

[0058] Figure 2 is another flow chart of the method for determining the air distribution mode provided by the present application. Figure 1 Based on the illustrated embodiment and various optional implementation schemes, the steps after determining the target air distribution mode are described in detail. Figure 2 As shown, the method may include the following steps:

[0059] Step 201, obtaining a target co-combustion condition.

[0060] Step 202: Determine, in the simulation model of the target boiler, the simulation boiler parameters corresponding to the multiple air distribution modes under the target co-firing condition.

[0061] Step 203, determining a target air distribution method corresponding to the target co-firing operating condition according to the simulated boiler parameters corresponding to the multiple air distribution methods under the target co-firing operating condition.

[0062] Step 204, supply air to the target boiler according to the target air distribution method, and obtain the fly ash carbon content of the tail flue gas of the target boiler.

[0063] Specifically, the target boiler is equipped with an online monitoring device for the carbon content of fly ash in the tail flue gas at the tail of the target boiler, which is used to collect the carbon content of fly ash in the tail flue gas of the target boiler. After the target boiler is supplied with air according to the target air distribution method, the carbon content of fly ash in the tail flue gas of the target boiler is obtained through the online monitoring device for the carbon content of fly ash in the tail flue gas.

[0064] Step 205, if the carbon content of the fly ash is greater than the preset carbon content, the wind speed ratios of the primary air, secondary air and burnout air of the target boiler in the target air distribution mode are adjusted according to a preset adjustment method to obtain a new target air distribution mode.

[0065] Specifically, the preset carbon content is a preset threshold value of fly ash carbon content that corresponds to the environmental protection effect expected to be achieved after the blending of biomass set by the staff. The preset adjustment method refers to a preset adjustment of the wind speed ratio of the primary air, secondary air and burnout air with a smaller adjustment range, such as a maximum adjustment range of 0.2. For example, the preset adjustment method is to adjust the wind speed ratio of the primary air, secondary air and burnout air with an adjustment range of 0.2. If the fly ash carbon content is greater than the preset carbon content, it indicates that the combustion result after the blending of biomass at this time cannot meet the environmental protection requirements. Therefore, the wind speed ratio of the primary air, secondary air and burnout air of the target boiler in the target air distribution method is adjusted according to the preset adjustment method to obtain a new target air distribution method.

[0066] Exemplarily, the wind speed ratio of primary air, secondary air and burnout air in the target air distribution method is 3:3:4, and the preset adjustment method is to adjust the wind speed ratio of primary air, secondary air and burnout air with a range of 0.2. Therefore, the adjusted wind speed ratio of primary air, secondary air and burnout air is 2.9:2.9:4.2, and the air distribution method with the wind speed ratio of primary air, secondary air and burnout air being 2.9:2.9:4.2 is used as the new target air distribution method.

[0067] Step 206, return to step 204, until the carbon content of the fly ash is less than or equal to the preset carbon content, and determine the new target air distribution mode as the optimal air distribution mode corresponding to the target co-combustion condition.

[0068] Specifically, after obtaining the new target air distribution mode, return to the step of supplying air to the target boiler according to the target air distribution mode, and re-detect the fly ash carbon content until the fly ash carbon content is less than or equal to the preset carbon content, that is, it can meet the environmental protection needs of the staff. At this time, the new target air distribution mode is determined as the optimal air distribution mode corresponding to the target mixed combustion condition.

[0069] The solution of this application detects the carbon content of fly ash produced by combustion after the target boiler supplies air according to the target air distribution method to determine whether the carbon content of fly ash meets the environmental protection requirements preset by the staff. If the environmental protection requirements are not met, the target air distribution method is continuously fine-tuned until the carbon content of fly ash produced by the target boiler after the target air distribution method supplies air can meet the environmental protection requirements preset by the staff. This improves the environmental protection effect of the target boiler after biomass blending, while ensuring environmental protection requirements and combustion efficiency, thereby improving the power generation capacity of the coal-fired unit.

[0070] Figure 3 is a structural schematic diagram of a device for determining an air distribution mode provided in the present application, and the device is suitable for executing the method for determining an air distribution mode provided in the present application. Figure 3 As shown, the device may specifically include:

[0071] The acquisition module 301 is used to acquire a target co-combustion operating condition; wherein the target co-combustion operating condition is used to characterize the co-combustion mode of pulverized coal and biomass in a target boiler.

[0072] The parameter determination module 302 is used to determine the simulated boiler parameters corresponding to the multiple air distribution modes under the target co-combustion condition in the simulation model of the target boiler; wherein the simulation model is a computational fluid dynamics simulation model of the target boiler, the simulated boiler parameters are used to characterize the simulated combustion efficiency of the simulation model, and the air distribution mode includes the wind speed ratios of the primary air, secondary air and burnout air of the target boiler.

[0073] The air distribution mode determination module 303 is used to determine the target air distribution mode corresponding to the target co-combustion condition based on the simulated boiler parameters corresponding to the multiple air distribution modes under the target co-combustion condition; wherein the target air distribution mode is used to indicate the wind speed ratio of the primary air, secondary air and burnout air corresponding to the target boiler when the combustion efficiency is the highest.

[0074] In one embodiment, the device also includes: a model building module, which is used to obtain the boiler parameters of the target boiler before the acquisition module 301 obtains the target co-combustion operating conditions; establish an initial simulation model of the target boiler according to the boiler parameters of the target boiler, and adjust the parameters of the initial simulation model according to the historical combustion data of the target boiler to obtain the simulation model of the target boiler.

[0075] In one embodiment, after the model building module determines the target air distribution mode corresponding to the target co-combustion condition according to the simulated boiler parameters corresponding to the multiple air distribution modes under the target co-combustion condition in the air distribution mode determination module 303, the model building module is also used to: supply air to the target boiler according to the target air distribution mode, and obtain the output boiler parameters of the target boiler; perform secondary parameter adjustment on the simulation model according to the output boiler parameters and the simulated boiler parameters corresponding to the target air distribution mode; use the simulation model after the secondary parameter adjustment as a new simulation model, and determine the new simulated boiler parameters corresponding to the multiple air distribution modes under the target co-combustion condition in the new simulation model; determine the new target air distribution mode corresponding to the target co-combustion condition according to the new simulated boiler parameters corresponding to the multiple air distribution modes.

[0076] In one embodiment, the air distribution method determination module 303 is specifically used to: determine the combustion efficiency corresponding to each of the multiple air distribution methods under the target co-combustion condition according to the simulated boiler parameters corresponding to the multiple air distribution methods; determine the optimal combustion efficiency according to the combustion efficiency corresponding to each of the air distribution methods; and use the air distribution method corresponding to the optimal combustion efficiency as the target air distribution method corresponding to the target co-combustion condition.

[0077] In one embodiment, the device also includes: an optimal air distribution method determination module, which is used to determine the target air distribution method corresponding to the target co-combustion condition according to the simulated boiler parameters corresponding to the multiple air distribution methods under the target co-combustion condition in the air distribution method determination module 303, and then supply air to the target boiler according to the target air distribution method, and obtain the fly ash carbon content of the tail flue gas of the target boiler; if the fly ash carbon content is greater than the preset carbon content, the wind speed ratio of the primary air, secondary air and burnout air of the target boiler in the target air distribution method is adjusted according to the preset adjustment method to obtain a new target air distribution method; return to execute the step of "supplying air to the target boiler according to the target air distribution method, and obtaining the fly ash carbon content of the tail flue gas of the target boiler" until the fly ash carbon content is less than or equal to the preset carbon content, and determine the new target air distribution method as the optimal air distribution method corresponding to the target co-combustion condition.

[0078] In one embodiment, the target co-combustion operating condition of the acquisition module 301 includes a target co-combustion ratio of the biomass or a target co-combustion position of the biomass in the target boiler.

[0079] The device of the present application obtains a target co-combustion condition; wherein the target co-combustion condition is used to characterize the co-combustion mode of pulverized coal and biomass in a target boiler; in a simulation model of the target boiler, the simulated boiler parameters corresponding to a plurality of air distribution modes under the target co-combustion condition are determined; wherein the simulation model is a computational fluid dynamics simulation model of the target boiler, the simulated boiler parameters are used to characterize the simulated combustion efficiency of the simulation model, and the air distribution mode includes the wind speed ratio of the primary air, secondary air and burnout air of the target boiler; according to the simulated boiler parameters corresponding to the plurality of air distribution modes under the target co-combustion condition, the target air distribution mode corresponding to the target co-combustion condition is determined; wherein the target air distribution mode is used to indicate the wind speed ratio of the primary air, secondary air and burnout air corresponding to the target boiler when the combustion efficiency is the highest. That is, the solution of the present application simulates the boiler parameters of the coal-fired unit after burning biomass in a simulation model to obtain the target air distribution method with the highest combustion efficiency of the target boiler under the target co-burning condition, thereby avoiding the situation where the combustion effect of the coal-fired unit on the fuel is greatly reduced when air is supplied to the boiler according to the initial air distribution method designed for the coal-fired unit after burning biomass, thereby improving the combustion efficiency of the target boiler and then improving the power generation efficiency of the coal-fired unit.

[0080] The present application also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, the method for determining the air distribution mode provided in any of the above embodiments is implemented.

[0081] The present application also provides a computer-readable medium having a computer program stored thereon, and when the program is executed by a processor, the method for determining the air distribution mode provided in any of the above embodiments is implemented.

[0082] Reference below Figure 4 , which shows a structural schematic diagram of an electronic device 400 suitable for implementing the present application. Figure 4 The electronic device shown is only an example and should not bring any limitation to the function and scope of use of the present application.

[0083] like Figure 4 As shown, the electronic device 400 includes a central processing unit (CPU) 401, which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 402 or a program loaded from a storage part 408 into a random access memory (RAM) 403. In the RAM 403, various programs and data required for the operation of the electronic device 400 are also stored. The CPU 401, the ROM 402, and the RAM 403 are connected to each other via a bus 404. An input / output (I / O) interface 405 is also connected to the bus 404.

[0084] The following components are connected to the I / O interface 405: an input section 406 including a keyboard, a mouse, etc.; an output section 407 including a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker, etc.; a storage section 408 including a hard disk, etc.; and a communication section 409 including a network interface card such as a LAN card, a modem, etc. The communication section 409 performs communication processing via a network such as the Internet. A drive 410 is also connected to the I / O interface 405 as needed. A removable medium 411, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., is installed on the drive 410 as needed, so that a computer program read therefrom is installed into the storage section 408 as needed.

[0085] In particular, according to the embodiments disclosed in the present application, the process described above with reference to the flowchart can be implemented as a computer software program. For example, the embodiments disclosed in the present application include a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program includes a program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from the network through the communication part 409, and / or installed from the removable medium 411. When the computer program is executed by the central processing unit (CPU) 401, the above-mentioned functions defined in the system of the present application are executed.

[0086] It should be noted that the computer-readable medium shown in the present application may be a computer-readable signal medium or a computer-readable storage medium or any combination of the above two. The computer-readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present application, a computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in combination with an instruction execution system, device or device. In the present application, a computer-readable signal medium may include a data signal propagated in a baseband or as part of a carrier wave, which carries a computer-readable program code. This propagated data signal may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. Computer-readable signal media may also be any computer-readable medium other than computer-readable storage media, which may send, propagate or transmit a program for use by or in conjunction with an instruction execution system, apparatus or device. The program code contained on the computer-readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wire, optical cable, RF, etc., or any suitable combination of the above.

[0087] The flow chart and block diagram in the accompanying drawings illustrate the possible architecture, function and operation of the system, method and computer program product according to various embodiments of the present application. In this regard, each box in the flow chart or block diagram can represent a module, a program segment or a part of a code, and the above-mentioned module, program segment or a part of a code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram or flow chart, and the combination of the boxes in the block diagram or flow chart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0088] The modules and / or units described in this application may be implemented in software or hardware. The modules and / or units described may also be set in a processor, for example, it may be described as: a processor includes an acquisition module, a parameter determination module, and an air distribution mode determination module. The names of these modules do not, in some cases, constitute limitations on the modules themselves.

[0089] As another aspect, the present application also provides a computer-readable medium, which may be included in the device described in the above embodiment; or may exist independently without being assembled into the device. The above computer-readable medium carries one or more programs, and when the above one or more programs are executed by a device, the device performs the following operations:

[0090] Obtain a target co-combustion condition; wherein the target co-combustion condition is used to characterize the co-combustion mode of pulverized coal and biomass in a target boiler; in a simulation model of the target boiler, determine the simulation boiler parameters corresponding to the multiple air distribution modes under the target co-combustion condition; wherein the simulation model is a computational fluid dynamics simulation model of the target boiler, the simulation boiler parameters are used to characterize the simulated combustion efficiency of the simulation model, and the air distribution mode includes the wind speed ratio of the primary air, secondary air and burnout air of the target boiler; determine the target air distribution mode corresponding to the target co-combustion condition according to the simulation boiler parameters corresponding to the multiple air distribution modes under the target co-combustion condition; wherein the target air distribution mode is used to indicate the wind speed ratio of the primary air, secondary air and burnout air corresponding to the target boiler when the combustion efficiency is highest.

[0091] According to the technical solution of the present application, a target co-combustion condition is obtained; wherein, the target co-combustion condition is used to characterize the co-combustion mode of pulverized coal and biomass in a target boiler; in a simulation model of the target boiler, simulation boiler parameters corresponding to multiple air distribution modes under the target co-combustion condition are determined; wherein the simulation model is a computational fluid dynamics simulation model of the target boiler, the simulation boiler parameters are used to characterize the simulated combustion efficiency of the simulation model, and the air distribution mode includes the wind speed ratio of the primary air, secondary air and burnout air of the target boiler; according to the simulation boiler parameters corresponding to the multiple air distribution modes under the target co-combustion condition, the target air distribution mode corresponding to the target co-combustion condition is determined; wherein the target air distribution mode is used to indicate the wind speed ratio of the primary air, secondary air and burnout air corresponding to the target boiler when the combustion efficiency is highest. That is, the solution of the present application simulates the boiler parameters of the coal-fired unit after burning biomass in a simulation model to obtain the target air distribution method with the highest combustion efficiency of the target boiler under the target co-burning condition, thereby avoiding the situation where the combustion effect of the coal-fired unit on the fuel is greatly reduced when air is supplied to the boiler according to the initial air distribution method designed for the coal-fired unit after burning biomass, thereby improving the combustion efficiency of the target boiler and then improving the power generation efficiency of the coal-fired unit.

[0092] An embodiment of the present application also provides a computer program product, including a computer program, which, when executed by a processor, implements a method for determining an air distribution mode as provided in any embodiment of the present application.

[0093] In the process of implementation, the computer program product can be written in one or more programming languages ​​or a combination thereof to perform the computer program code of the present application, and the programming language includes an object-oriented programming language, such as Java, Smalltalk, C++, and also includes a conventional procedural programming language, such as "C" language or similar programming language. The program code can be executed entirely on the user's computer, partially on the user's computer, as an independent software package, partially on the user's computer and partially on the remote computer, or completely on the remote computer or server. In the case of a remote computer, the remote computer can be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or can be connected to an external computer (for example, using an Internet service provider to connect through the Internet).

[0094] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps recorded in this application can be executed in parallel, sequentially or in different orders, as long as the expected results of the technical solution of this application can be achieved, and this document is not limited here.

[0095] The above specific implementations do not constitute a limitation on the protection scope of this application. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may occur depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of this application should be included in the protection scope of this application.

Claims

1. A method for determining an air distribution mode, characterized in that: The method comprises: Obtaining a target co-combustion operating condition; wherein the target co-combustion operating condition is used to characterize the co-combustion mode of pulverized coal and biomass in a target boiler; In the simulation model of the target boiler, the simulated boiler parameters corresponding to the multiple air distribution modes under the target co-combustion condition are determined; wherein the simulation model is a computational fluid dynamics simulation model of the target boiler, the simulated boiler parameters are used to characterize the simulated combustion efficiency of the simulation model, and the air distribution mode includes the wind speed ratios of the primary air, secondary air and burnout air of the target boiler; According to the simulated boiler parameters corresponding to the multiple air distribution modes under the target co-combustion condition, the target air distribution mode corresponding to the target co-combustion condition is determined; wherein the target air distribution mode is used to indicate the wind speed ratio of the primary air, secondary air and burnout air corresponding to the target boiler when the combustion efficiency is the highest.

2. The method according to claim 1, characterized in that Before obtaining the target co-combustion operating condition, the method further includes: Acquiring boiler parameters of the target boiler; An initial simulation model of the target boiler is established according to boiler parameters of the target boiler, and parameters of the initial simulation model are adjusted according to historical combustion data of the target boiler to obtain a simulation model of the target boiler.

3. The method according to claim 2, characterized in that After determining the target air distribution mode corresponding to the target co-firing operating condition according to the simulated boiler parameters respectively corresponding to the multiple air distribution modes under the target co-firing operating condition, the method further includes: Supplying air to the target boiler according to the target air distribution method, and obtaining output boiler parameters of the target boiler; Performing secondary parameter adjustment on the simulation model according to the output boiler parameters and the simulated boiler parameters corresponding to the target air distribution mode; The simulation model after the secondary parameter adjustment is used as a new simulation model, and in the new simulation model, new simulation boiler parameters corresponding to the multiple air distribution modes under the target co-firing condition are determined respectively; According to the new simulated boiler parameters respectively corresponding to the multiple air distribution modes, a new target air distribution mode corresponding to the target co-combustion operating condition is determined.

4. The method according to claim 1, characterized in that The determining the target air distribution mode corresponding to the target co-combustion working condition according to the simulated boiler parameters respectively corresponding to the multiple air distribution modes under the target co-combustion working condition comprises: Determine the combustion efficiency corresponding to each of the air distribution modes according to the simulated boiler parameters corresponding to the multiple air distribution modes under the target mixed combustion condition; Determine the optimal combustion efficiency according to the combustion efficiency corresponding to each of the air distribution modes; The air distribution method corresponding to the optimal combustion efficiency is used as the target air distribution method corresponding to the target co-combustion working condition.

5. The method according to claim 1, characterized in that The method further comprises: Supplying air to the target boiler according to the target air distribution method, and obtaining the fly ash carbon content of the tail flue gas of the target boiler; If the carbon content of the fly ash is greater than the preset carbon content, the wind speed ratio of the primary air, secondary air and burnout air of the target boiler in the target air distribution mode is adjusted according to a preset adjustment method to obtain a new target air distribution mode; Return to the step of "supplying air to the target boiler according to the target air distribution method, and obtaining the fly ash carbon content of the tail flue gas of the target boiler" until the fly ash carbon content is less than or equal to the preset carbon content, and determine the new target air distribution method as the optimal air distribution method corresponding to the target co-combustion condition.

6. The method according to claim 1, characterized in that The target co-combustion operating condition includes a target co-combustion ratio of the biomass or a target co-combustion position of the biomass in the target boiler.

7. A device for determining an air distribution mode, characterized in that: The device comprises: An acquisition module, used for acquiring a target co-combustion operating condition; wherein the target co-combustion operating condition is used for characterizing the co-combustion mode of pulverized coal and biomass in a target boiler; A parameter determination module, used to determine, in the simulation model of the target boiler, the simulated boiler parameters corresponding to the multiple air distribution modes under the target co-combustion condition; wherein the simulation model is a computational fluid dynamics simulation model of the target boiler, the simulated boiler parameters are used to characterize the simulated combustion efficiency of the simulation model, and the air distribution mode includes the wind speed ratios of the primary air, secondary air and burnout air of the target boiler; The air distribution mode determination module is used to determine the target air distribution mode corresponding to the target co-combustion condition according to the simulated boiler parameters corresponding to the multiple air distribution modes under the target co-combustion condition; wherein the target air distribution mode is used to indicate the wind speed ratio of the primary air, secondary air and burnout air corresponding to the target boiler when the combustion efficiency is the highest.

8. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the program, the air distribution mode determination method as described in any one of claims 1 to 6 is implemented.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the method for determining the air distribution mode as described in any one of claims 1 to 6 is implemented.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the computer program implements the method for determining the air distribution mode according to any one of claims 1 to 6.

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