Flue gas circulation and combustion control coordinated energy efficiency environment-friendly intelligent management method

Abstract

The invention discloses a flue gas circulation and combustion control cooperative energy efficiency environmental protection intelligent management method, and relates to the energy and power engineering related field, and the method comprises the steps: connecting a combustion control system of a thermal power plant, obtaining a thermal power generation combustion control scheme, carrying out combustion control energy efficiency prediction according to the scheme, and obtaining a first prediction combustion control energy efficiency coefficient; and if it is judged that the first predicted combustion control energy efficiency coefficient is smaller than the preset combustion control energy efficiency coefficient, an optimized combustion control scheme is generated, based on the optimized combustion control scheme, the combustion control system carries out thermal power generation, and combustion control energy reutilization is carried out according to the flue gas circulation system. The technical problems that in existing thermal power generation, combustion control energy efficiency is low, energy utilization is insufficient, and an effective optimization and risk early warning mechanism is lacked are solved, and the technical effects that the thermal power generation energy efficiency is improved, energy consumption and cost are reduced, and safety and stability in the power generation process are guaranteed are achieved.

Description

Technical Field

[0001] The present application relates to the field of energy and power engineering, and in particular to an energy-efficient and environmentally friendly intelligent management method for coordinated flue gas circulation and combustion control. Background Art

[0002] In the field of thermal power generation, with the growth of energy demand and the improvement of environmental protection requirements, problems such as low fuel control efficiency, serious energy waste and lack of effective risk management in thermal power generation have become increasingly prominent. How to optimize the fuel control scheme to improve energy efficiency, achieve full utilization of energy, and establish an effective risk warning mechanism has become the key to ensuring the safe, stable and efficient operation of thermal power generation. Traditional thermal power generation methods often have problems such as insufficient optimization of fuel control schemes, insufficient energy utilization, lack of effective monitoring and response measures for fuel control risks, and are difficult to meet current energy utilization and environmental protection requirements.

[0003] Among the current relevant technologies, there are technical problems in thermal power generation such as low combustion control efficiency, insufficient energy utilization, and lack of effective optimization and risk warning mechanisms. Summary of the invention

[0004] The present application provides an energy-efficient and environmentally friendly intelligent management method for the coordination of flue gas circulation and combustion control. The application adopts a combustion control system connected to a thermal power plant to obtain a thermal power generation combustion control plan, predicts the combustion control energy efficiency according to the plan, obtains a first predicted combustion control energy efficiency coefficient, and generates an optimized combustion control plan if the first predicted combustion control energy efficiency coefficient is less than a predetermined combustion control energy efficiency coefficient. Thermal power generation is carried out based on the optimized combustion control plan and the combustion control system, and combustion control energy is reused according to the flue gas circulation system. The application achieves the technical effect of improving the energy efficiency of thermal power generation, reducing energy consumption and cost, and ensuring the safety and stability of the power generation process by optimizing the combustion control plan, making full use of energy, and establishing a risk warning mechanism.

[0005] The present application provides an energy-efficient and environmentally friendly intelligent management method for flue gas circulation and combustion control, including:

[0006] Connecting to the combustion control system of a thermal power plant to obtain a thermal power generation combustion control plan; predicting the combustion control energy efficiency according to the thermal power generation combustion control plan to obtain a first predicted combustion control energy efficiency coefficient; judging whether the first predicted combustion control energy efficiency coefficient is less than a predetermined combustion control energy efficiency coefficient; if the first predicted combustion control energy efficiency coefficient is less than the predetermined combustion control energy efficiency coefficient, optimizing the thermal power generation combustion control plan to generate an optimized combustion control plan; based on the optimized combustion control plan, performing thermal power generation according to the combustion control system, and reusing combustion control energy according to the flue gas circulation system of the thermal power plant.

[0007] The present application proposes an energy-efficient and environmentally friendly intelligent management method for the coordinated flue gas circulation and combustion control. First, the combustion control system of the thermal power plant is connected to obtain a thermal power generation combustion control plan, and the combustion control energy efficiency is predicted according to the plan to obtain a first predicted combustion control energy efficiency coefficient. If it is determined that the first predicted combustion control energy efficiency coefficient is less than the predetermined combustion control energy efficiency coefficient, an optimized combustion control plan is generated, and thermal power generation is carried out based on the optimized combustion control plan and the combustion control system. The combustion control energy is reused according to the flue gas circulation system, thereby achieving the technical effect of improving the energy efficiency of thermal power generation, reducing energy consumption and costs, and ensuring the safety and stability of the power generation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the accompanying drawings of the embodiment of the present invention will be briefly introduced below. A flow chart is used in the present application to illustrate the operations performed by the system according to the embodiment of the present application. It should be understood that the preceding or following operations are not necessarily performed accurately in order. On the contrary, various steps can be processed in reverse order or simultaneously as needed. At the same time, other operations can also be added to these processes, or one or more operations can be removed from these processes.

[0009] Figure 1 A flow chart of an energy-efficient and environmentally friendly intelligent management method for flue gas circulation and combustion control coordinated with an embodiment of the present application is provided. DETAILED DESCRIPTION

[0010] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below.

[0011] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings. The described embodiments should not be regarded as limiting the present application. All other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of this application.

[0012] In the following description, reference is made to "some embodiments", which describe a subset of all possible embodiments, but it is understood that "some embodiments" may be the same subset or different subsets of all possible embodiments, and may be combined with each other without conflict, and the terms "first\second" involved are merely to distinguish similar objects and do not represent a specific ordering of objects. The terms "including" and "having" and any variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product, or server that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or modules that are not clearly listed or inherent to these processes, methods, products, or devices. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by technicians in the technical field of this application. The terms used herein are for the purpose of describing the embodiments of the present application only.

[0013] The present application embodiment provides an energy-efficient and environmentally friendly intelligent management method for flue gas circulation and combustion control. Figure 1 As shown, the method includes:

[0014] Step S100, connecting to the combustion control system of the thermal power plant to obtain a thermal power generation combustion control plan.

[0015] Specifically, the thermal power generation combustion control plan refers to a series of control parameters and strategies obtained by establishing a connection with the combustion control system of a thermal power plant. Select the combustion control system of the thermal power plant to be connected, prepare the data transmission equipment, set the connection parameters, such as the communication protocol, data format, etc., perform the connection operation, and obtain the initial combustion control plan data. The initial combustion control plan data represents the preliminary settings of the fuel type, input amount, combustion time, etc. in the combustion control system, and its characteristics are basic control parameters. Continue to interact with the combustion control system to obtain the optimized combustion control plan data. The optimized combustion control plan data represents the control strategy adjusted based on the initial plan according to the actual operating conditions and efficiency requirements. Its characteristics are targeted optimization parameters to obtain a complete and accurate thermal power generation combustion control plan.

[0016] Step S200: performing combustion control energy efficiency prediction according to the thermal power generation combustion control scheme to obtain a first predicted combustion control energy efficiency coefficient.

[0017] Specifically, according to the specific content of the combustion control scheme of thermal power generation, fuel characteristics and energy efficiency and environmental protection requirements, a combustion control energy efficiency prediction model is determined. The combustion control energy efficiency prediction model is a tool used to calculate the energy efficiency coefficient when analyzing the combustion control scheme. When the model completes the relevant calculations, the first predicted combustion control energy efficiency coefficient is obtained. Similarly, an energy efficiency evaluation index is determined, that is, a standard used to measure whether the combustion control energy efficiency is up to standard when judging. An optimization judgment threshold is set. The optimization judgment threshold is a critical value used for comparison when judging whether the combustion control scheme needs to be optimized.

[0018] In a possible implementation, a fuel control energy efficiency prediction is performed according to the thermal power generation fuel control scheme to obtain a first predicted fuel control energy efficiency coefficient, and step S200 further includes step S210, activating a thermal power generation simulation platform. Specifically, according to the scale of thermal power generation, equipment characteristics and environmental protection energy efficiency requirements, the thermal power generation simulation platform is activated. The thermal power generation simulation platform is used to simulate the thermal power generation process. When the platform is successfully activated, it can provide basic support for subsequent fuel control simulations. Similarly, prepare relevant data input, that is, before the simulation, organize the required fuel control scheme and other data. Set the operating conditions of the simulation, and the operating conditions include the number of simulations, accuracy requirements, etc. When the conditions are set, the fuel control simulation can be started.

[0019] Step S220, based on the thermal power generation simulation platform, multiple combustion control simulations are performed according to the thermal power generation combustion control scheme to obtain multiple simulated combustion control energy efficiencies. Specifically, based on the thermal power generation simulation platform, multiple combustion control simulations are carried out according to the thermal power generation combustion control scheme, and the combustion control energy efficiency in each simulation is calculated and recorded to form multiple simulated combustion control energy efficiency data. Among them, the simulated combustion control energy efficiency is calculated in each simulation based on fuel combustion, energy conversion, system operation, etc., and represents the energy utilization efficiency in the simulation; through multiple such simulations and calculations, multiple different simulated combustion control energy efficiency values ​​are obtained.

[0020] Step S230, perform mean calculation based on the multiple simulated combustion control energy efficiencies to generate the first predicted combustion control energy efficiency coefficient. Specifically, multiple simulated combustion control energy efficiency values ​​obtained from multiple combustion control simulations are sorted out and arranged in a certain order or rule. The multiple simulated combustion control energy efficiency values ​​are added together using the mean calculation method in mathematics to obtain their sum, and the sum is divided by the number of simulations. The quotient obtained is the average value of these simulated combustion control energy efficiency values, ensuring the accuracy of the calculation and avoiding numerical input errors or calculation errors. The calculated average value is determined as the first predicted combustion control energy efficiency coefficient, and the coefficient reflects the average energy utilization efficiency of multiple simulations.

[0021] Step S300, determining whether the first predicted combustion control energy efficiency coefficient is less than a predetermined combustion control energy efficiency coefficient.

[0022] Specifically, the specific value of the predetermined fuel control energy efficiency coefficient is clarified. The predetermined value is determined comprehensively based on multiple factors such as the energy efficiency standards, environmental protection requirements, economic cost considerations, and technical capabilities of the thermal power plant. After obtaining the first predicted fuel control energy efficiency coefficient, it is directly compared with the predetermined fuel control energy efficiency coefficient to ensure that the units and calculation methods of the two are completely consistent to ensure the accuracy and fairness of the comparison. If the first predicted fuel control energy efficiency coefficient is less than the predetermined fuel control energy efficiency coefficient, it means that the current fuel control scheme may have insufficient energy efficiency and further optimization measures are needed. If the first predicted fuel control energy efficiency coefficient is greater than or equal to the predetermined fuel control energy efficiency coefficient, it means that the current fuel control scheme has met or exceeded the expected standards in terms of energy efficiency, and subsequent thermal power generation operations can be carried out according to the original plan.

[0023] Step S400: If the first predicted combustion control energy efficiency coefficient is less than the predetermined combustion control energy efficiency coefficient, the thermal power generation combustion control scheme is optimized to generate an optimized combustion control scheme.

[0024] Specifically, when the first predicted fuel control efficiency coefficient is less than the predetermined fuel control efficiency coefficient, it is necessary to optimize the fuel control scheme of thermal power generation, collect relevant data in the thermal power generation process, including fuel consumption, power generation, unit operating parameters, etc., analyze the data, determine the key factors affecting the fuel control efficiency, such as steam temperature, pressure, vacuum, etc., and determine the optimization goals according to the actual situation, such as improving energy efficiency, reducing coal consumption, reducing pollutant emissions, etc., and change the parameters of the PID controller through automatic online adjustment. According to real-time changes, the fuel input, combustion temperature, pressure and other parameters are appropriately adjusted to achieve the optimization goals. The thermal power generation simulation platform is used to optimize the optimization. The optimized scheme is simulated and run, the optimized fuel control energy efficiency coefficient is calculated, and compared with the predetermined fuel control energy efficiency coefficient. If the simulation result does not meet the requirements, the reasons are analyzed and the optimization scheme is adjusted. The above steps are repeated until an optimized fuel control scheme that meets the requirements is generated. The optimized fuel control scheme is applied to the actual thermal power generation process, the actual operation effect is monitored and evaluated, and further adjustments and improvements are made as needed to optimize the thermal power generation fuel control scheme, improve energy efficiency, reduce coal consumption, and achieve the goal of energy conservation and emission reduction. At the same time, the specific optimization scheme should be selected and adjusted according to the actual situation to ensure its feasibility and effectiveness.

[0025] In a possible implementation, if the first predicted combustion control energy efficiency coefficient is less than the predetermined combustion control energy efficiency coefficient, the thermal power generation combustion control scheme is optimized to generate an optimized combustion control scheme, and step S400 further includes step S410, if the first predicted combustion control energy efficiency coefficient is less than the predetermined combustion control energy efficiency coefficient, generating a combustion control optimization instruction. Specifically, when the first predicted combustion control energy efficiency coefficient is less than the predetermined combustion control energy efficiency coefficient, the system automatically generates a combustion control optimization instruction, which includes specific requirements and directions for improving the existing thermal power generation combustion control scheme.

[0026] Step S420, optimizing the thermal power generation combustion control scheme based on the combustion control optimization instruction to obtain a first thermal power generation combustion control optimization scheme. Specifically, optimizing the thermal power generation combustion control scheme based on the combustion control optimization instruction, adjusting the fuel input amount and combustion temperature in the original scheme according to the optimization instruction, thereby obtaining the first thermal power generation combustion control optimization scheme.

[0027] Step S430, performing combustion control energy efficiency prediction according to the first thermal power generation combustion control optimization scheme to obtain a second predicted combustion control energy efficiency coefficient. Specifically, performing combustion control energy efficiency prediction according to the first thermal power generation combustion control optimization scheme takes into account factors such as fuel calorific value and energy conversion efficiency to obtain the second predicted combustion control energy efficiency coefficient.

[0028] Step S440, judging whether the second predicted fuel control energy efficiency coefficient is greater than / equal to the predetermined fuel control energy efficiency coefficient. Specifically, the second predicted fuel control energy efficiency coefficient is compared with the predetermined fuel control energy efficiency coefficient to judge whether the condition of being greater than or equal to the predetermined fuel control energy efficiency coefficient is satisfied.

[0029] Step S450: If the second predicted combustion control energy efficiency coefficient is greater than / equal to the predetermined combustion control energy efficiency coefficient, the first thermal power generation combustion control optimization scheme is added to the optimized combustion control scheme. Specifically, the first thermal power generation combustion control optimization scheme is added to the set of optimized combustion control schemes for subsequent use or reference. The scheme is continuously optimized to reach or exceed the predetermined combustion control energy efficiency standard. In actual application, it needs to be analyzed and adjusted according to the actual situation and detailed data of the thermal power plant.

[0030] In a possible implementation, the thermal power generation combustion control scheme is optimized based on the combustion control optimization instruction to obtain a first thermal power generation combustion control optimization scheme, and step S420 further includes step S421, based on the combustion control optimization instruction, retrieving the combustion control energy information of the combustion control system. Specifically, according to the given combustion control optimization instruction, a corresponding operation is initiated to retrieve the combustion control energy information in the combustion control system, and the information includes relevant data such as the type, reserve, quality, and combustion efficiency of the fuel, so as to provide a basis and constraint conditions for subsequent scheme adjustment.

[0031] Step S422, obtain thermal power generation demand information. Specifically, thermal power generation demand information is obtained through various channels. The demand information comes from the forecast of the power market, the dispatching instructions of the power grid, the power demand of users, etc., and clarifies the power generation goals to be achieved, such as total power generation, stability requirements of power generation, timeliness requirements of power supply, etc.

[0032] Step S423, taking the thermal power generation demand information as the combustion control target and the combustion control energy information as the combustion control constraint, the thermal power generation combustion control scheme is randomly adjusted to obtain multiple thermal power generation combustion control optimization schemes. Specifically, the acquired thermal power generation demand information is set as the combustion control target, and the previously retrieved combustion control energy information is regarded as the combustion control constraint. The thermal power generation combustion control scheme is modified and optimized multiple times using the random adjustment method. The random adjustment involves multiple aspects such as fuel ratio, combustion time control, and combustion temperature setting. Each adjustment will generate a new thermal power generation combustion control optimization scheme. After multiple repetitions, multiple different optimization schemes are obtained.

[0033] Step S424, randomly extract the first thermal power generation combustion control optimization scheme according to the multiple thermal power generation combustion control optimization schemes. Specifically, randomly select one of the multiple thermal power generation combustion control optimization schemes as the first thermal power generation combustion control optimization scheme. The random selection process has no specific rules, and is intended to select one of the multiple feasible schemes to provide an initial reference object for subsequent further analysis, evaluation or practical application. The random adjustment method is used to generate multiple schemes, and one of them is randomly selected, which provides a variety of choices and possibilities for achieving efficient, stable and demand-compliant thermal power generation combustion control.

[0034] In one possible implementation, if the second predicted fuel control energy efficiency coefficient is greater than / equal to the predetermined fuel control energy efficiency coefficient, the first thermal power generation fuel control optimization scheme is added to the optimized fuel control scheme, and step S450 further includes step S451. If the second predicted fuel control energy efficiency coefficient is less than the predetermined fuel control energy efficiency coefficient, the first thermal power generation fuel control optimization scheme is eliminated. Specifically, the specific values ​​of the second predicted combustion control energy efficiency coefficient and the predetermined combustion control energy efficiency coefficient are clarified. The second predicted combustion control energy efficiency coefficient is an evaluation index of combustion control energy efficiency obtained by a specific calculation or prediction method, and the predetermined combustion control energy efficiency coefficient is a standard value set in advance. After obtaining these two coefficients, the second predicted combustion control energy efficiency coefficient is compared with the predetermined combustion control energy efficiency coefficient. If it is found through comparison that the second predicted combustion control energy efficiency coefficient is less than the predetermined combustion control energy efficiency coefficient, it reflects that the current first thermal power generation combustion control optimization scheme fails to meet the expected standards in terms of energy efficiency. In order to ensure that the energy efficiency of thermal power generation meets the requirements, or to select a better option from many schemes, it is decided to eliminate the first thermal power generation combustion control optimization scheme. The elimination decision is to avoid adopting schemes with poor energy efficiency, thereby prompting subsequent research and optimization work to focus on other schemes that are more promising and more in line with energy efficiency standards, so as to improve the efficiency and performance of the entire thermal power generation combustion control system.

[0035] In a possible implementation, the thermal power generation demand information is used as the combustion control target, the combustion control energy information is used as the combustion control constraint, the thermal power generation combustion control scheme is randomly adjusted, and multiple thermal power generation combustion control optimization schemes are obtained. Step S423 further includes step S4231: judging whether the combustion control energy information meets the combustion control energy constraint. Specifically, the acquired combustion control energy information is analyzed and evaluated, including detailed inspection and data processing of the type, quantity, quality, supply stability, etc. of the fuel, and the combustion control energy information is compared and measured one by one with the pre-set combustion control energy constraint conditions. The combustion control energy constraint covers multiple specific restrictions and regulations such as the minimum fuel reserve, fuel quality standards, and time requirements for energy supply.

[0036] Step S4232, if the combustion control energy information does not meet the combustion control energy constraint, generate a combustion control energy early warning instruction. Specifically, if the comparison finds that any one or more key indicators in the combustion control energy information fail to meet the standard set by the combustion control energy constraint, it is determined that the combustion control energy information does not meet the combustion control energy constraint, and it is determined that the constraint condition is not met. The system starts the corresponding mechanism and generates a combustion control energy early warning instruction. The early warning instruction contains detailed information such as the specific aspects, degree and impact of the non-satisfaction constraint, and is presented in the form of a specific signal, message or report, so that relevant personnel can receive and take corresponding response measures in a timely manner, such as emergency deployment of fuel resources, adjustment of power generation plan, equipment maintenance to improve energy utilization efficiency, etc., to avoid the problem of operation failure or inefficiency of the thermal power generation system caused by insufficient or non-compliant combustion control energy.

[0037] Step S500, based on the optimized combustion control scheme, thermal power generation is performed according to the combustion control system, and combustion control energy is recycled according to the flue gas circulation system of the thermal power plant.

[0038] Specifically, the optimization of the combustion control plan includes a series of detailed control parameters and strategies on the amount of fuel used, the combustion method, the combustion time and the temperature. According to the optimization of the combustion control plan, the combustion control system starts to operate for thermal power generation. In this process, the fuel is put into the combustion equipment in the manner and quantity specified in the plan, and generates electricity through a series of chemical reactions and energy conversions. At the same time, the flue gas circulation system of the thermal power plant begins to play a role. The flue gas contains incompletely burned fuel components, heat energy and other reusable substances. The system collects and processes the exhausted flue gas, and extracts the useful components in the flue gas through filtering, separation, cooling, etc. The incompletely burned fuel components can be sent back to the combustion equipment for re-combustion to improve the utilization rate of the fuel. The heat energy recovered from the flue gas can be converted into other forms of energy through heat exchange and other methods, such as heating water to generate steam, thereby driving the steam turbine to generate electricity, or used for heating in the factory. Through the combustion control energy recycling process, not only the energy utilization efficiency is improved and waste is reduced, but also the pollution to the environment is reduced, and the optimal allocation of resources and sustainable development in the process of thermal power generation are achieved.

[0039] In a possible implementation, based on the optimized combustion control scheme, thermal power generation is performed according to the combustion control system, and combustion control energy is reused according to the flue gas circulation system of the thermal power plant. Step S500 further includes step S510, and the flue gas circulation system includes a flue gas waste heat recovery module and a waste heat transportation module. Specifically, the complete flue gas circulation system includes a flue gas waste heat recovery module and a waste heat transportation module, wherein the flue gas waste heat recovery module is composed of a series of high-efficiency heat exchange equipment. When the flue gas with a large amount of heat energy is discharged from the combustion equipment, it will first enter this module. Inside the module, through the designed heat exchanger, the temperature difference principle is used to transfer the waste heat in the flue gas to a specific working medium, such as water or other heat transfer fluids. After absorbing the heat, the working medium increases in temperature, thereby realizing the preliminary recovery of the flue gas waste heat. The waste heat transportation module is responsible for the effective transmission and distribution of the recovered waste heat energy, including a series of pipeline networks, delivery pumps, regulating valves and and control devices, etc. When the working medium in the flue gas waste heat recovery module completes heat absorption and temperature rises, the delivery pump will transport the working medium with heat along the pipeline to the place where waste heat is needed. The regulating valve can accurately control the flow and pressure of waste heat delivery according to different needs and working conditions to ensure that the waste heat can reach the designated location accurately and stably. The flue gas waste heat recovery module and the waste heat delivery module cooperate with each other to form an organic whole. The former focuses on extracting precious waste heat energy from the flue gas, while the latter ensures that the energy can be safely and efficiently transported to where it is needed, thereby realizing energy reuse and improving the energy utilization efficiency of the entire thermal power generation system.

[0040] Step S520, thermal power generation is carried out based on the optimized combustion control scheme and the combustion control system, and combustion control waste heat energy is obtained according to the flue gas waste heat recovery module. Specifically, in the preparation stage, an optimized combustion control scheme is formulated, and the scheme comprehensively considers various factors, such as the type and quality of fuel, combustion conditions and time, etc., to achieve the best combustion effect and energy conversion efficiency. The combustion control system is in a monitoring state and includes various control devices and monitoring instruments to ensure accurate control and safe operation of the combustion process. When thermal power generation starts, according to the settings of the optimized combustion control scheme, the fuel is accurately put into the combustion equipment and burned under preset environmental conditions. The combustion process is regulated to maximize the conversion of chemical energy in the fuel into electrical energy. During the exhaust process of the flue gas generated by the combustion, the flue gas with a large amount of waste heat will enter the flue gas. Waste heat recovery module, this module usually adopts efficient heat exchange technology, such as heat pipe heat exchanger or plate heat exchanger, etc. When the flue gas passes through these heat exchangers, its high temperature exchanges heat with the low-temperature medium in the heat exchanger. The low-temperature medium absorbs the heat in the flue gas and its temperature gradually increases, while the temperature of the flue gas gradually decreases. After the heat exchange process, the heat absorbed by the low-temperature medium becomes usable combustion control waste heat energy. The waste heat energy includes hot water, hot steam or high-temperature heat transfer oil, etc., depending on the design and configuration of the waste heat recovery module, it successfully obtains valuable combustion control waste heat energy from the flue gas that would otherwise be wasted, laying the foundation for subsequent reuse.

[0041] Step S530, the combustion control waste heat energy is reused according to the waste heat transport module. Specifically, the recovered combustion control waste heat energy is transported from the waste heat recovery module to the place where it needs to be reused through the waste heat transport module. The transport module includes pipelines, pumps and other equipment for effectively transporting the waste heat energy to the target location. Different waste heat utilization methods are selected according to specific needs and situations, including using waste heat energy to drive turbines or generators to generate electricity, using waste heat energy to heat water or air to provide heat supply, such as for regional heating or heating in industrial production processes, converting waste heat energy into cold energy through absorption refrigeration or heat pump technology, and using it in fields such as air conditioning or refrigeration, and directly applying waste heat energy to heating processes in industrial production, such as drying, cooking, etc. According to the selected waste heat utilization method, corresponding energy conversion equipment is required. For example, in power generation applications, steam turbines or gas turbines are required. Equipment such as heat pumps and heat exchangers convert waste heat energy into mechanical energy, and then further into electrical energy. The waste heat transmission module, energy conversion equipment and other related systems are integrated to ensure the coordinated operation of the entire waste heat recycling system. A control system is required to monitor and adjust parameters such as the flow, temperature and pressure of waste heat to achieve efficient energy utilization. The benefits of the waste heat recycling system are evaluated, including energy recovery, economic benefits and environmental benefits. According to the evaluation results, the system is optimized and improved to improve the efficiency and effectiveness of waste heat utilization. Customized design is carried out according to the characteristics of waste heat, user needs and technical feasibility. At the same time, the system's safety, reliability and economy requirements are considered to maximize the reuse efficiency of combustion control waste heat energy and achieve the goals of energy conservation, emission reduction and comprehensive resource utilization.

[0042] In one possible implementation, thermal power generation is performed based on the optimized combustion control scheme and the combustion control system, and combustion control waste heat energy is obtained according to the flue gas waste heat recovery module. Step S520 further includes step S521, obtaining combustion control monitoring data. Specifically, in thermal power generation or other systems involving combustion control, a series of monitoring equipment and sensors are installed at key positions to obtain combustion control monitoring data, including a flow meter for measuring fuel flow, which accurately records the speed and total amount of fuel entering the combustion equipment, a thermocouple or infrared thermometer for monitoring the combustion temperature, which senses the temperature change in the combustion area in real time, and a pressure sensor is installed in related pipes and containers to monitor the pressure during the combustion process. An analyzer for detecting the concentration of emissions can measure the content of pollutants such as nitrogen oxides and sulfur dioxide. The monitoring equipment and sensors continuously convert the monitored physical quantities into electrical signals or digital signals, and the signals are transmitted through connecting lines. The signals are transmitted to the data acquisition system by way of path or wireless transmission. The data acquisition system is responsible for receiving, sorting and preliminarily processing these signals. In the preliminary processing stage, operations such as signal amplification, filtering and digital conversion will be performed to improve the quality and accuracy of the data. The processed data will be stored in a database or data storage device to form a collection of combustion control monitoring data for subsequent analysis and use. In order to ensure the reliability and accuracy of the monitoring data, it is also necessary to calibrate and maintain the monitoring equipment and sensors regularly to eliminate possible errors and faults, accurately obtain combustion control monitoring data, and provide a basis and basis for subsequent combustion control risk assessment, optimization and adjustment, etc.

[0043] Step S522, generating a combustion control risk coefficient based on the combustion control monitoring data. Specifically, the combustion control monitoring data is obtained, the data is classified and screened, and different types of data, such as fuel flow, combustion temperature, pressure, emission concentration, etc., are distinguished according to their impact and relevance on the combustion control risk, and corresponding weights are set for each type of data. The determination of weights is usually based on historical experience, expert knowledge, and in-depth understanding of the combustion control system. For example, excessive combustion temperature poses a greater threat to system safety, so its weight may be higher; while a small fluctuation in fuel flow has a relatively small impact on the risk, and the weight may be lower. Each type of screened data is standardized. In order to unify data of different dimensions and ranges onto a comparable scale, standardization is performed. The method is to subtract the mean from the data and divide it by the standard deviation. Then, according to the set weights, the standardized data is weighted and calculated. Through weighted summation, various types of data are integrated into a comprehensive value. After the weighted calculation is completed, further adjustment and correction are required based on some special rules or conditions. For example, the combination of certain data requires additional correction factors. The comprehensive value is the combustion control risk coefficient, which reflects the risk level of the current combustion control status. The larger the value, the higher the combustion control risk; the smaller the value, the lower the risk. A coefficient that can effectively measure the combustion control risk is successfully generated from the combustion control monitoring data, which provides an important basis for subsequent risk judgment and decision-making.

[0044] Step S523, determine whether the combustion control risk coefficient is greater than the combustion control risk threshold. Specifically, based on the combustion control risk coefficient and the combustion control risk threshold set in advance, when judging, the combustion control risk coefficient is directly compared with the combustion control risk threshold, and the values ​​of the combustion control risk coefficient and the combustion control risk threshold are accurately read during the comparison process, and a subtraction operation is performed. If the value of the combustion control risk coefficient is greater than the value of the combustion control risk threshold, then the judgment result is "yes", indicating that the current combustion control status has a high risk. On the contrary, if the value of the combustion control risk coefficient is less than or equal to the value of the combustion control risk threshold, then the judgment result is "no", which means that the current combustion control risk is within an acceptable range or at a relatively low level. To ensure the accuracy and reliability of the judgment, multiple repeated verifications will be performed, and a comprehensive judgment will be made in combination with other relevant conditions and factors. The comparison results will be recorded and stored, so that the subsequent process can take corresponding measures based on this judgment result to determine whether the combustion control risk coefficient exceeds the preset threshold, providing a key basis for subsequent risk response decisions.

[0045] Step S524, if the combustion control risk coefficient is greater than the combustion control risk threshold, a combustion control warning signal is generated. Specifically, when it is determined that the combustion control risk coefficient is greater than the pre-set combustion control risk threshold, the system will start the combustion control warning signal generation mechanism, and the control unit in the system will receive the judgment result that the combustion control risk coefficient is greater than the threshold, and the control unit will trigger the corresponding warning program, which contains specific rules and parameters for generating warning signals. According to the preset rules, the appropriate warning signal type is selected. Warning signal types may include sound alarms (such as sharp whistles), light signals (such as flashing red lights), electronic signals (such as telegrams or data packets in a specific format), or displaying eye-catching warning text and icons on the monitoring interface, etc., to determine the intensity and duration of the warning signal. The intensity may be related to the magnitude of the combustion control risk coefficient exceeding the threshold. The greater the magnitude of the excess, the higher the signal strength may be; the duration is set according to the urgency of the risk and the time required for subsequent processing. In the process of generating the warning signal, the system will call the relevant hardware devices or software modules to realize the output of the signal. For example, for a sound alarm, the speaker will be driven to emit a sound of a specific frequency and volume; for a light signal, it will The control indicator light flashes at a set frequency; for electronic signals, they will be encoded and sent according to the predetermined protocol and format. In order to ensure that the warning signal can be effectively sensed and transmitted, the system may send the signal repeatedly or display it at multiple locations simultaneously to avoid omissions or misjudgments. The generated combustion control warning signal will be quickly transmitted to relevant personnel or systems, such as the operator's console, the large screen of the monitoring center, and the mobile devices of relevant managers, so that they can take timely measures to deal with combustion control risks and ensure the safe and stable operation of the system. The whole process is fast and accurate, aiming to issue a clear warning as soon as the combustion control risk exceeds the acceptable range so as to intervene and deal with it in time.

[0046] The embodiment of the present application adopts a combustion control system connected to a thermal power plant, obtains a thermal power generation combustion control plan, performs combustion control energy efficiency prediction according to the plan, obtains a first predicted combustion control energy efficiency coefficient, determines if the first predicted combustion control energy efficiency coefficient is less than a predetermined combustion control energy efficiency coefficient, generates an optimized combustion control plan, performs thermal power generation based on the optimized combustion control plan and the combustion control system, and reuses combustion control energy according to the flue gas circulation system, thereby achieving the technical effect of improving the energy efficiency of thermal power generation, reducing energy consumption and costs, and ensuring the safety and stability of the power generation process.

[0047] The above specific implementation manner does not constitute a limitation to the protection scope of the present application. It should be understood by those skilled in the art that various modifications, combinations and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application. In some cases, the actions or steps recorded in the present application can be performed in an order different from that in the embodiment and can still achieve the desired results. In addition, the process depicted in the accompanying drawings does not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

Claims

1. An energy efficiency and environmental protection intelligent management method for flue gas circulation and combustion control, characterized in that: The method comprises: Connect to the combustion control system of the thermal power plant to obtain the combustion control solution for thermal power generation; Performing a combustion control energy efficiency prediction according to the thermal power generation combustion control scheme to obtain a first predicted combustion control energy efficiency coefficient; determining whether the first predicted fuel control energy efficiency coefficient is less than a predetermined fuel control energy efficiency coefficient; If the first predicted combustion control energy efficiency coefficient is less than the predetermined combustion control energy efficiency coefficient, optimizing the thermal power generation combustion control scheme to generate an optimized combustion control scheme; Based on the optimized combustion control scheme, thermal power generation is carried out according to the combustion control system, and combustion control energy is recycled according to the flue gas circulation system of the thermal power plant.

2. The method according to claim 1, characterized in that According to the thermal power generation combustion control scheme, a combustion control energy efficiency prediction is performed to obtain a first predicted combustion control energy efficiency coefficient, including: Activate the thermal power generation simulation platform; Based on the thermal power generation simulation platform, multiple combustion control simulations are performed according to the thermal power generation combustion control scheme to obtain multiple simulated combustion control energy efficiencies; An average calculation is performed based on the multiple simulated combustion control energy efficiencies to generate the first predicted combustion control energy efficiency coefficient.

3. The method according to claim 1, characterized in that If the first predicted combustion control energy efficiency coefficient is less than the predetermined combustion control energy efficiency coefficient, optimizing the thermal power generation combustion control scheme to generate an optimized combustion control scheme, including: If the first predicted fuel control energy efficiency coefficient is less than the predetermined fuel control energy efficiency coefficient, generating a fuel control optimization instruction; Optimizing the thermal power generation combustion control scheme based on the combustion control optimization instruction to obtain a first thermal power generation combustion control optimization scheme; Performing a fuel control energy efficiency prediction according to the first thermal power generation fuel control optimization scheme to obtain a second predicted fuel control energy efficiency coefficient; determining whether the second predicted combustion control energy efficiency coefficient is greater than / equal to the predetermined combustion control energy efficiency coefficient; If the second predicted combustion control energy efficiency coefficient is greater than / equal to the predetermined combustion control energy efficiency coefficient, the first thermal power generation combustion control optimization plan is added to the optimized combustion control plan.

4. The method according to claim 3, characterized in that The thermal power generation combustion control scheme is optimized based on the combustion control optimization instruction to obtain a first thermal power generation combustion control optimization scheme, including: Based on the combustion control optimization instruction, retrieving the combustion control energy information of the combustion control system; Obtain information on thermal power generation demand; Taking the thermal power generation demand information as the fuel control target and the fuel control energy information as the fuel control constraint, randomly adjusting the thermal power generation fuel control scheme to obtain multiple thermal power generation fuel control optimization schemes; According to the multiple thermal power generation combustion control optimization schemes, the first thermal power generation combustion control optimization scheme is randomly extracted.

5. The method according to claim 3, characterized in that If the second predicted combustion control energy efficiency coefficient is less than the predetermined combustion control energy efficiency coefficient, the first thermal power generation combustion control optimization scheme is eliminated.

6. The method according to claim 4, characterized in that The method comprises: Determining whether the fuel control energy information satisfies the fuel control energy constraint; If the fuel control energy information does not satisfy the fuel control energy constraint, a fuel control energy warning instruction is generated.

7. The method according to claim 1, characterized in that Based on the optimized combustion control scheme, thermal power generation is performed according to the combustion control system, and combustion control energy is reused according to the flue gas circulation system of the thermal power plant, including: The flue gas circulation system includes a flue gas waste heat recovery module and a waste heat transport module; Based on the optimized combustion control scheme and the combustion control system, thermal power generation is performed, and combustion control waste heat energy is obtained according to the flue gas waste heat recovery module; The combustion control waste heat energy is reused according to the waste heat transport module.

8. The method according to claim 7, characterized in that Thermal power generation is performed based on the optimized combustion control scheme and the combustion control system, including: Obtain combustion control monitoring data; generating a combustion control risk coefficient according to the combustion control monitoring data; Determining whether the combustion control risk coefficient is greater than a combustion control risk threshold; If the combustion control risk coefficient is greater than the combustion control risk threshold, a combustion control warning signal is generated.

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