Environment-friendly emission control method for thermal power plant

Abstract

The invention provides an environment-friendly emission control method for a thermal power plant, which comprises the following steps of: screening coal by utilizing infrared scanning and X-ray analysis to obtain coal with ultralow sulfur and ultralow ash content, performing microwave treatment, and destroying a sulfide structure by utilizing a microwave heating effect; combustion air supply is dynamically adjusted through a composite low-nitrogen combustor in combination with an oxygen concentration sensor. Carrying out self-adaptive control on the circulating fluidized bed, and monitoring bed temperature and pressure to automatically adjust reactor parameters; combustion flue gas is treated through a flue gas treatment system with wet limestone-gypsum method desulfurization and non-thermal plasma denitration and an intelligent bag-type dust collector with self-diagnosis and automatic cleaning functions; various harmful gases are monitored, equipment parameters are automatically adjusted, smoke waste heat is utilized to generate steam or hot water, and energy flow and consumption are monitored and optimized through an energy management system, so that pollutant emission is effectively reduced, the treatment cost is reduced, and the waste gas treatment efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of thermal power generation, and in particular to a method for controlling environmentally friendly emissions of a thermal power plant. Background Art

[0002] As global environmental standards become increasingly stringent, the emission control of thermal power plants, as one of the main energy production facilities, has received great attention. Traditional thermal power plants, especially coal-fired power plants, face many environmental challenges during operation, including the emission of pollutants such as sulfur oxides (SOx), nitrogen oxides (NOx), and particulate matter. These emissions not only cause serious pollution to the environment, but also cause human health problems. Therefore, higher requirements are placed on the emission control technology of thermal power plants. At present, the commonly used methods of thermal power plants include the use of limestone wet desulfurization technology, selective catalytic reduction (SCR) technology, etc. to control the emission of SOx and NOx.

[0003] However, the above methods often consume a lot of energy and resources, increase operating costs, and have shortcomings in processing efficiency and energy recovery. Summary of the invention

[0004] The present invention provides a method for controlling environmentally friendly emissions of a thermal power plant, which is used to solve the defects in the prior art that the exhaust gas emissions of thermal power generation consume a large amount of energy and resources and have low efficiency.

[0005] In a first aspect, the present invention provides a method for controlling environmental emissions of a thermal power plant, comprising:

[0006] Use infrared scanning and X-ray analysis to screen coal and obtain ultra-low sulfur and ultra-low ash coal;

[0007] The ultra-low sulfur and ultra-low ash coal is subjected to microwave treatment to destroy the sulfide structure by microwave heating effect to obtain desulfurized coal;

[0008] Dynamically adjust the combustion air supply of the desulfurized coal by using a composite low-nitrogen burner in combination with an oxygen concentration sensor;

[0009] Under the combustion air supply, adaptively controlling the circulating fluidized bed, monitoring the bed temperature and pressure, and automatically adjusting reactor parameters based on the bed temperature and the pressure;

[0010] After the reactor parameters are automatically adjusted, the combustion flue gas is treated by a flue gas treatment system of wet limestone-gypsum desulfurization and non-thermal plasma denitrification, and an intelligent bag filter with self-diagnosis and automatic cleaning functions;

[0011] Through an integrated environmental monitoring system, the various harmful gases after treatment are monitored in real time, and equipment parameters of the environmental monitoring system are automatically adjusted;

[0012] When the content of the harmful gas reaches the preset standard, the waste heat of the flue gas is used to generate steam or hot water, and the energy flow and consumption are monitored and optimized through the energy management system.

[0013] According to a method for controlling environmental emissions of a thermal power plant provided by the present invention, the method uses infrared scanning and X-ray analysis to screen coal to obtain ultra-low sulfur and ultra-low ash coal, including:

[0014] At the beginning of the supply chain, select purchased coal with a sulfur content not exceeding 0.3% and an ash content not exceeding 10%;

[0015] Conducting a preliminary surface sulfur content test on the purchased coal using an infrared scanner, setting the scanner sensitivity to ±0.05% to identify coal exceeding the standard and obtaining coal meeting the sulfur standard;

[0016] The randomly selected samples of the sulfur-compliant coal are subjected to X-ray fluorescence spectrometer analysis to ensure that the ash content measurement accuracy is within the range of ±0.5%, thereby obtaining ultra-low sulfur and ultra-low ash coal.

[0017] According to a method for controlling environmental emissions of a thermal power plant provided by the present invention, the ultra-low sulfur and ultra-low ash coal is subjected to microwave treatment, and the sulfide structure is destroyed by microwave heating effect to obtain desulfurized coal, comprising:

[0018] Make sure the microwave equipment power for microwave treatment is between 1000-2000W;

[0019] The coal is treated for 2-5 minutes using the microwave equipment with a power between 1000 and 2000 W and the frequency is controlled to be 2.45 GHz to destroy the sulfide structure and obtain desulfurized coal.

[0020] According to a method for controlling environmental emissions of a thermal power plant provided by the present invention, the combustion air supply of the desulfurized coal is dynamically adjusted by a composite low-nitrogen burner in combination with an oxygen concentration sensor, comprising:

[0021] Determine an oxygen concentration sensor with a measurement range of 0%-10% and an adjustment accuracy of ±0.1%;

[0022] The proportion of combustion air is dynamically adjusted based on the feedback of the oxygen concentration sensor to ensure that the oxygen content in the combustion chamber is maintained between 3% and 5% of the combustion efficiency.

[0023] According to a method for controlling environmental emissions of a thermal power plant provided by the present invention, before adaptively controlling the circulating fluidized bed, monitoring the bed temperature and pressure, and automatically adjusting the reactor parameters based on the bed temperature and the pressure, the method further includes:

[0024] Using the bed temperature sensor and pressure sensor of the circulating fluidized bed, the bed temperature is set at 800℃-1000℃, and the pressure is adjusted to ±10% of the rated operating pressure;

[0025] The automatic control system is used to adjust the wind speed and coal powder supply in real time according to the data of the bed temperature sensor and the pressure sensor.

[0026] According to a method for controlling environmental emissions of a thermal power plant provided by the present invention, the flue gas treatment system using wet limestone-gypsum desulfurization and non-thermal plasma denitrification is used to treat the combustion flue gas, comprising:

[0027] Design an integrated flue gas treatment unit including wet desulfurization section and plasma denitrification section;

[0028] Debugging the integrated flue gas treatment unit to ensure the flow and mixing efficiency of the limestone slurry and achieve the target desulfurization rate;

[0029] Setting a target voltage and frequency in the plasma denitration section to reduce nitrogen oxides;

[0030] The parameters of the integrated flue gas treatment unit are adjusted through continuous monitoring to adapt to different operating conditions and flue gas compositions.

[0031] According to a method for controlling environmental emissions of a thermal power plant provided by the present invention, the debugging of the integrated flue gas treatment unit includes: in the wet desulfurization part, adjusting the pH value range to 5.5-7.5 and the conductivity to 1500-3500 μS / cm;

[0032] The target voltage and frequency are set in the plasma denitration section, including: in the non-thermal plasma part, the voltage range is set to 8-20kV, and the frequency is 500-10kHz.

[0033] According to a method for controlling environmental emissions of a thermal power plant provided by the present invention, the combustion flue gas is processed by an intelligent bag filter with self-diagnosis and automatic cleaning functions, comprising:

[0034] An automatic cleaning system is formed by a sensor system that automatically detects filter bag blockage and damage;

[0035] The cleaning frequency and intensity are adjusted according to sensor feedback. In the automatic cleaning system, the pressure difference sensor response threshold of the bag filter is configured to be 200-500Pa, and the automatic cleaning start threshold is set to 300Pa.

[0036] According to a method for controlling environmental emissions of a thermal power plant provided by the present invention, the real-time monitoring of the treated multiple harmful gases and the automatic adjustment of the equipment parameters of the environmental monitoring system include:

[0037] Equipped with multi-parameter environmental monitoring instruments including sulfur dioxide, nitrogen oxides, carbon dioxide and particulate matter;

[0038] Utilizing the data acquisition unit of the multi-parameter environmental monitoring instrument to collect and transmit monitoring data in real time;

[0039] The monitoring data is analyzed through integrated software, and the operating settings of related environmental protection equipment are automatically adjusted. When excessive emissions are detected, the corresponding equipment is automatically adjusted or shut down.

[0040] According to a method for controlling environmental emissions of a thermal power plant provided by the present invention, the method of using flue gas waste heat to generate steam or hot water comprises:

[0041] Determine the availability and energy content of flue gas waste heat;

[0042] Based on the availability and energy content, configure an efficient heat exchange system to recover heat energy from the flue gas, with a heat exchange temperature range of 100-200°C;

[0043] integrating said recovered heat energy with a steam or hot water network;

[0044] The integrated waste heat recovery efficiency is determined through energy monitoring equipment and feedback is provided to adjust system performance.

[0045] In a second aspect, the present invention further 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 controlling environmental emissions of a thermal power plant as described above is implemented.

[0046] In a third aspect, the present invention further provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements any of the above-mentioned methods for controlling environmental emissions of a thermal power plant.

[0047] In a fourth aspect, the present invention further provides a computer program product, comprising a computer program, which, when executed by a processor, implements any of the above-mentioned methods for controlling environmental emissions of a thermal power plant.

[0048] The present invention provides a method for controlling environmental emissions of thermal power plants, comprising: screening coal by infrared scanning and X-ray analysis to obtain ultra-low sulfur and ultra-low ash coal; subjecting the ultra-low sulfur and ultra-low ash coal to microwave treatment, destroying the sulfide structure by microwave heating effect, and obtaining desulfurized coal; dynamically adjusting the combustion air supply of the desulfurized coal by using a composite low-nitrogen burner in combination with an oxygen concentration sensor; adaptively controlling a circulating fluidized bed under the combustion air supply, monitoring the bed temperature and pressure, and automatically adjusting the reactor parameters based on the bed temperature and pressure; after automatically adjusting the reactor parameters, desulfurizing the coal by wet limestone-gypsum method and non-thermal desulfurization. The flue gas treatment system with plasma denitrification and the intelligent bag dust collector with self-diagnosis and automatic cleaning functions treat the combustion flue gas; through the integrated environmental monitoring system, various harmful gases after treatment are monitored in real time, and the equipment parameters of the environmental monitoring system are automatically adjusted; when the content of harmful gases reaches the preset standard, the waste heat of the flue gas is used to generate steam or hot water, and the energy management system is used to monitor and optimize energy flow and consumption. By controlling and treating coal at the source, the sulfur oxides of coal combustion are reduced. Combined with sensor feedback, the combustion air ratio is accurately controlled, which effectively reduces pollutant emissions, reduces treatment costs, and improves waste gas treatment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0050] Figure 1 It is a flow chart of the method for controlling environmental emissions of a thermal power plant provided in this embodiment;

[0051] Figure 2 is a schematic diagram of the structure of the environmental protection emission control device for a thermal power plant provided in this embodiment;

[0052] Figure 3 It is a schematic diagram of the structure of the electronic device provided in this embodiment. DETAILED DESCRIPTION

[0053] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0054] Figure 1 It is a flow chart of the method for controlling environmental emissions of a thermal power plant provided in this embodiment.

[0055] like Figure 1 As shown, the method for controlling environmental emissions of a thermal power plant provided by the embodiment of the present invention mainly includes the following steps:

[0056] 101. Use infrared scanning and X-ray analysis to screen coal and obtain coal with ultra-low sulfur and ultra-low ash content.

[0057] In a specific implementation process, at the beginning of the supply chain, the purchased coal with a sulfur content not exceeding 0.3% and an ash content not exceeding 10% is screened; a preliminary surface sulfur content test of the purchased coal is carried out using an infrared scanner, and the scanner sensitivity is set to ±0.05% to identify coal exceeding the standard, so as to obtain sulfur-compliant coal; randomly selected samples of sulfur-compliant coal are analyzed by X-ray fluorescence spectrometer to ensure that the ash measurement accuracy is within the range of ±0.5%, so as to obtain ultra-low sulfur and ultra-low ash coal.

[0058] The use of infrared scanning technology can quickly identify the sulfur content on the surface of coal, while X-ray analysis technology can deeply analyze the ash composition of coal. These technologies can ensure that the selected coal is of good quality and meets environmental protection requirements. The generation of sulfur oxides and dust during the combustion process is reduced, thereby reducing the dependence on desulfurization and dust removal systems and operating costs.

[0059] 102. Ultra-low sulfur and ultra-low ash coal is subjected to microwave treatment to destroy the sulfide structure using the microwave heating effect to obtain desulfurized coal.

[0060] In order to further pre-treat the coal to be burned, microwaves are used to destroy the sulfide structure of the coal. The microwave equipment power for microwave treatment is determined to be between 1000-2000W; microwave treatment uses the thermal and non-thermal effects of electromagnetic waves to change the chemical and physical structure of sulfides in coal. By adjusting the microwave power, the transmission and distribution of energy can be controlled to optimize the degree of sulfide decomposition. The power setting between 1000-2000W can ensure that enough energy penetrates the interior of the coal while preventing energy waste or coal damage caused by overheating. Precise control of microwave power can efficiently destroy sulfides in coal, reduce the generation of sulfur dioxide during combustion, reduce the impact on the environment, and maintain the energy value of coal.

[0061] Using microwave equipment between 1000-2000W, the coal is treated for 2-5 minutes, and the frequency is controlled at 2.45GHz to destroy the sulfide structure and obtain desulfurized coal. The time and frequency of microwave treatment are key parameters affecting the efficiency of sulfide decomposition in coal. 2.45GHz can effectively excite and heat moisture and other volatile components in coal, accelerating the chemical reaction process. The treatment time in the range of 2-5 minutes can ensure that the sulfide is fully decomposed without causing excessive consumption or damage to the coal structure. By accurately setting the treatment time and frequency, microwave treatment can minimize the sulfur content in coal, thereby reducing carbon dioxide emissions. In addition, this treatment method is more efficient and environmentally friendly than traditional methods such as chemical washing because it reduces the generation of chemical waste and saves processing time.

[0062] Microwave treatment can penetrate the coal surface and directly act on the sulfide structure, changing its chemical properties by heating, thereby reducing the availability of sulfur, effectively reducing sulfur oxide emissions during combustion, significantly improving flue gas quality, and effectively improving emission pollution in thermal power plants through front-end control.

[0063] 103. The combustion air supply of desulfurized coal is dynamically adjusted through the composite low-nitrogen burner combined with the oxygen concentration sensor.

[0064] The new composite low-nitrogen burner optimizes the combustion process by precisely controlling the mixing ratio of fuel and air. The oxygen concentration sensor monitors the oxygen content in the combustion environment in real time, ensuring the lower limit of combustion conditions to reduce the generation of nitrogen oxides, significantly reducing nitrogen oxide emissions, and improving combustion efficiency and compliance with environmental standards. The measurement range of the oxygen concentration sensor is 0%-10%, and the adjustment accuracy is ±0.1%.

[0065] Oxygen concentration sensors are used to monitor the oxygen level in the combustion environment in real time, ensuring that there is enough oxygen to support complete combustion during the combustion process, thereby optimizing the combustion efficiency of the fuel and reducing the generation of pollutants. The selected sensor has a wide measurement range and high precision, and can accurately reflect the changes in oxygen concentration in the combustion environment. It is a key technical means to control the combustion process. By accurately monitoring the oxygen concentration in real time, incomplete combustion or over-combustion caused by insufficient or excessive oxygen supply can be prevented, thereby optimizing energy utilization, reducing ineffective fuel consumption and reducing the generation of pollutants such as nitrogen oxides.

[0066] The proportion of combustion air is then dynamically adjusted based on the feedback from the oxygen concentration sensor to ensure that the oxygen content in the combustion chamber is maintained between 3% and 5% of the combustion efficiency. Relying on the data provided by the oxygen concentration sensor, the supply ratio of combustion air is adjusted through the automatic control system. Maintaining the oxygen content in the combustion chamber in the range of 3%-5% helps to achieve efficient combustion of coal and minimize heat loss caused by excess air. This dynamic adjustment mechanism not only improves combustion efficiency, reduces coal consumption and heat energy loss, but also significantly reduces nitrogen oxides generated due to excessive combustion temperature. In addition, maintaining an ideal combustion oxygen level can reduce the pressure on the emission control system, extend its service life and reduce maintenance costs.

[0067] The oxygen concentration sensor is used to effectively adjust the ratio of fuel and air. At the same time, the use of a new composite low-nitrogen burner further improves control accuracy, better ensuring the improvement of combustion efficiency.

[0068] 104. Under the supply of combustion air, the circulating fluidized bed is adaptively controlled, the bed temperature and pressure are monitored, and the reactor parameters are automatically adjusted based on the bed temperature and pressure.

[0069] Before adaptive control, bed temperature sensors and pressure sensors are installed to set the bed temperature at 800℃-1000℃, and the pressure adjustment range is ±10% of the normal operating pressure. Bed temperature and pressure are the most critical operating parameters in a circulating fluidized bed reactor, which directly affect the combustion efficiency of the fuel and the generation of pollutants. By installing high-precision temperature and pressure sensors, it is possible to ensure that these parameters are controlled within the optimal range, thereby optimizing the combustion process and pollutant control. Controlling bed temperature and pressure can not only improve the combustion efficiency of the fuel, but also reduce carbon emissions and other pollutants generated by incomplete combustion. In addition, proper temperature control helps prevent equipment overheating, thereby extending equipment life and reducing maintenance costs.

[0070] The automatic control system is then used to adjust the wind speed and coal powder supply in real time based on the sensor data. The automatic control system responds to the data provided by the sensor in real time to adjust the air supply wind speed and the amount of coal powder added. Through this fine adjustment, it can be ensured that the combustion environment is always maintained in the optimal state, achieving efficient heat energy conversion and minimum pollutant emissions. Dynamic adjustment of wind speed and coal powder supply can quickly adapt to any changing combustion needs, thereby maximizing thermal efficiency and minimizing pollutant generation. This method improves the adaptability of the reactor and can maintain efficient and clean operation under different loads and different coal quality conditions.

[0071] Through adaptive control technology, the circulating fluidized bed system can automatically adjust operating parameters (such as bed temperature and pressure) according to real-time data to maintain optimal combustion conditions, improve fuel utilization efficiency, and reduce waste and pollution caused by incomplete combustion of coal.

[0072] 105. After automatically adjusting the reactor parameters, the combustion flue gas is treated by a flue gas treatment system using wet limestone-gypsum desulfurization and non-thermal plasma denitrification, and an intelligent bag filter with self-diagnosis and automatic cleaning functions.

[0073] The design includes an integrated flue gas treatment unit with a wet desulfurization section and a plasma denitrification section. In the wet desulfurization section, the pH value is adjusted to 5.5-7.5 and the conductivity is 1500-3500μS / cm. In the non-thermal plasma section, the voltage range is set to 8-20kV and the frequency is 500-10kHz. Wet desulfurization uses limestone slurry to absorb sulfur oxides in flue gas, while plasma denitrification uses plasma generated by high voltage to destroy the molecular structure of nitrogen oxides and convert them into harmless substances. The integrated design reduces the space occupied by the equipment and the complexity of operation, while being able to control the emissions of SOx and NOx in one system at the same time, improving the treatment efficiency and reliability.

[0074] The integrated flue gas treatment unit is debugged to ensure the flow and mixing efficiency of the limestone slurry to achieve the target desulfurization rate; by adjusting the flow rate and mixing degree of the limestone slurry, the contact efficiency with sulfur oxides in the flue gas can be optimized to improve the desulfurization effect. Ensure the maximum flue gas treatment efficiency, while reducing limestone consumption and waste generation, and reduce operating costs.

[0075] The target voltage and frequency are set in the plasma denitration section to reduce nitrogen oxides. Plasma denitration generates high-energy plasma by setting appropriate voltage and frequency. These plasmas can break the chemical bonds of nitrogen oxides and convert them into nitrogen and water. It can effectively reduce NOx emissions, improve flue gas quality, and have less impact on the environment.

[0076] Through continuous monitoring, the parameters of the integrated flue gas treatment unit are adjusted to adapt to different operating conditions and flue gas composition. By continuously monitoring the pollutant concentration and other key parameters in the flue gas, the system can automatically adjust the treatment parameters to adapt to the changes in flue gas composition caused by combustion conditions or fuel changes. Improve the adaptability and flexibility of the system to ensure that the best environmental protection effect can be achieved under different operating conditions.

[0077] Wet desulfurization removes sulfur oxides from flue gas through chemical reactions, while non-thermal plasma denitrification uses high-voltage plasma to destroy nitrogen oxide molecules, integrating the treatment of multiple pollutants in flue gas, improving treatment efficiency, and reducing the complexity and cost of overall emissions.

[0078] The combustion flue gas is treated by an intelligent bag filter with self-diagnosis and automatic cleaning functions, including: a sensor system that automatically detects filter bag blockage and damage to form an automatic cleaning system; the installed sensors can monitor the status of the filter bags in the bag filter in real time, including whether there is blockage or damage. Through continuous monitoring, the system can warn before problems occur in the filter bags, thereby avoiding reduced dust removal efficiency or potential equipment damage due to filter bag failure. Early detection and treatment of filter bag problems avoids expensive emergency repair costs and potential environmental compliance risks, ensuring the continued operation and efficiency of the dust removal system.

[0079] The cleaning frequency and intensity are adjusted according to the sensor feedback. In the automatic cleaning system, the pressure difference sensor response threshold of the bag filter is 200-500Pa, and the automatic cleaning start threshold is set to 300Pa. The automatic cleaning system uses the pressure difference sensor to detect the degree of blockage of the filter bag. When the pressure difference exceeds the set start threshold (300Pa), the cleaning program is automatically started. This automated cleaning process adjusts the cleaning frequency and intensity according to the actual use conditions to remove the accumulated dust in the filter bag in the best way. Automatically adjusting the cleaning cycle and intensity to cope with the actual working conditions of the filter bag significantly improves the service life and dust removal efficiency of the filter bag, while reducing manual intervention and reducing operating costs.

[0080] Remote monitoring protocols can also be set up to allow operators to monitor and adjust the performance of the dust collector from within the control room. With remote monitoring protocols, operators can monitor the various performance indicators of the bag dust collector in real time from within the control room and make necessary adjustments. This includes real-time data analysis and trend monitoring to ensure that the dust collector is operating in optimal conditions. Remote monitoring and control capabilities enable the operation and maintenance team to quickly respond to changes in equipment status, optimize operating parameters, and further improve system reliability and efficiency. In addition, remote monitoring reduces the need for on-site inspections, improving safety and convenience.

[0081] The intelligent bag filter monitors the blockage and wear of the filter bag through built-in sensors, automatically starting the cleaning or replacement process to maintain the dust removal efficiency. It improves the reliability and maintenance efficiency of the dust removal system, reduces manual intervention, and extends the service life of the equipment.

[0082] 106. Through the integrated environmental monitoring system, various harmful gases after treatment are monitored in real time, and the equipment parameters of the environmental monitoring system are automatically adjusted.

[0083] Install multi-parameter environmental monitoring instruments including SO2, NOx, CO2 and particulate matter. By configuring multi-parameter environmental monitoring instruments including sulfur dioxide, nitrogen oxides, carbon dioxide and particulate matter. By installing environmental monitoring instruments that can detect multiple pollutants, detailed data on flue gas composition can be obtained. These instruments continuously monitor the emissions of thermal power plants to ensure that the emission levels of all key pollutants are within the permitted range. Timely and accurate emission monitoring enables thermal power plants to comply with strict environmental regulations, reduce negative impacts on the environment, and help the plant understand and improve its emission control strategies.

[0084] The data acquisition unit of the multi-parameter environmental monitoring instrument is used to collect and transmit monitoring data in real time. The data acquisition unit is responsible for collecting all environmental data obtained from the monitoring instrument and transmitting this data to the central control system in real time. This ensures the timeliness and accuracy of the data and provides a basis for subsequent analysis. The collection and transmission of real-time data is crucial for rapid response to environmental changes. It enables thermal power plants to adjust operations in a timely manner to deal with possible emission problems, thereby optimizing overall environmental performance.

[0085] Through integrated software, monitoring data is analyzed and the operating settings of relevant environmental protection equipment are automatically adjusted. When excessive emissions are detected, emergency response procedures are implemented to automatically adjust or shut down the corresponding equipment. The integrated software uses advanced data analysis technologies, such as machine learning and pattern recognition, to identify trends and anomalies from the collected data. Based on this information, the software can automatically adjust the operating parameters of environmental protection equipment, such as adjusting the chemical dosage of the desulfurization device or adjusting the combustion conditions to reduce the generation of NOx. Automated equipment adjustment reduces dependence on manual intervention and improves the accuracy and efficiency of emission control. This not only helps the plant save costs, but also improves compliance with environmental regulations. Emergency response procedures are preset automatic measures designed to respond to sudden environmental emission problems. When the monitoring system detects excessive emissions, measures can be automatically taken, such as adjusting or shutting down certain key equipment, to quickly control the situation and prevent further environmental impacts. This measure greatly improves the ability of thermal power plants to respond to sudden environmental incidents, ensure environmental safety and prevent possible legal liabilities. This rapid response capability is essential to maintaining the safety of the public and the environment.

[0086] The system integrates a highly sensitive sensor network that can detect a variety of pollutants including SO2, NOx, CO2 and particulate matter in real time. The data is analyzed by advanced software to automatically adjust related equipment to optimize operating conditions, ensuring that the power station continues to comply with environmental regulations, respond quickly to environmental changes, and reduce the risk of emission violations.

[0087] 107. When the content of harmful gases reaches the preset standard, the waste heat of flue gas is used to generate steam or hot water, and the energy flow and consumption are monitored and optimized through the energy management system.

[0088] Using flue gas waste heat to generate steam or hot water can be a way to determine the availability and energy content of flue gas waste heat; performing a waste heat assessment is the first step in determining the potential for flue gas waste heat recovery. This step involves analyzing the temperature, flow rate, and chemical composition of the flue gas to assess the recoverable thermal energy it contains. This assessment helps determine the most appropriate heat recovery technology and design parameters. Accurately assessing the waste heat in flue gas can ensure that the designed heat recovery system is both efficient and economical, thereby maximizing energy recovery efficiency and reducing energy waste.

[0089] Based on availability and energy content, an efficient heat exchange system is configured to recover heat energy from flue gas, with a heat exchange temperature range of 100-200°C. The waste heat in the flue gas is converted into usable energy (such as hot water or steam) using an efficient heat exchange system. The heat exchanger is designed to withstand the high temperature of the flue gas and effectively transfer the heat energy. By effectively recovering the waste heat from the flue gas, the dependence on external energy is significantly reduced, energy costs are reduced, and environmental pollution is reduced.

[0090] Integrate recovered heat with steam or hot water networks. Integrating recovered heat (hot water or steam) into existing energy networks can be used directly for heating, power or other industrial processes. This integration ensures compatibility between systems and maximum efficiency of energy flow. Integration increases the overall energy efficiency and economy of the system, ensures continuous use and optimization of energy, and increases the flexibility of energy management.

[0091] Energy monitoring equipment is used to determine the efficiency of waste heat recovery after integration and to provide feedback to adjust system performance. By installing energy monitoring equipment, the performance of the waste heat recovery system can be continuously tracked and evaluated. Monitoring data can be used to further adjust and optimize system settings to ensure continuous operation in the optimal state. Continuous performance evaluation and optimization can ensure the long-term effective operation of the waste heat recovery system and maximize the return on investment. This not only improves energy efficiency, but also helps maintain equipment health and reduce maintenance costs.

[0092] The waste heat utilization system recovers the heat energy in the flue gas through a high-efficiency heat exchanger, converts it into industrial steam or hot water, and reduces the original energy demand. It significantly improves energy utilization, reduces energy consumption, reduces operating costs, and reduces the environmental impact caused by heat emissions.

[0093] The energy management system uses intelligent algorithms to optimize energy distribution and utilization efficiency by comprehensively analyzing all energy consumption data, achieving higher economic efficiency and energy efficiency, ensuring the optimal allocation of energy in various operating departments, and supporting sustainable development goals.

[0094] The effect of the technical solution of the present invention is demonstrated by specific parameter tests below.

[0095] Example 1:

[0096] S1. Purchase coal with sulfur content below 0.3% and ash content below 10%, and use infrared scanning and X-ray analysis to ensure coal quality;

[0097] S2, treating the coal in a 1000W microwave processor for 3 minutes at a frequency of 2.45GHz to destroy the sulfide structure;

[0098] S3. Install an oxygen concentration sensor to maintain the oxygen content in the combustion chamber at 4%;

[0099] S4, set the bed temperature to 900°C, and adjust the wind speed and coal powder supply through the automatic control system;

[0100] S5, implement integrated wet desulfurization and plasma denitrification system, voltage 15kV, frequency 7kHz;

[0101] S6. Install an intelligent bag filter with self-diagnosis function, and set the automatic cleaning threshold to 350Pa;

[0102] S7. Install multi-parameter monitoring instruments and integrate data analysis and equipment adjustment software;

[0103] S8. Design a heat exchange system to recover waste heat from flue gas at a temperature of 150°C and integrate it into the steam network;

[0104] S9. Implement energy management systems to optimize energy flow and consumption.

[0105] After testing and demonstration, it was concluded that the standard environmentally friendly thermal power plant is based on compliant coal, combined with efficient microwave processing, adaptive control and advanced flue gas treatment technology, to effectively achieve optimized environmental protection and energy efficiency management.

[0106] Example 2:

[0107] S1. Strictly select low-sulfur and low-ash coal and use advanced testing technology to ensure coal quality;

[0108] S2, treating the coal in a 2000W microwave processor for 5 minutes at a frequency of 2.45GHz;

[0109] S3, using a high-precision oxygen concentration sensor, the oxygen content is maintained at 3%;

[0110] S4, the bed temperature is set to 1000°C, and the operation is optimized using an advanced automatic control system;

[0111] S5, desulfurization and denitrification systems adopt the latest technology, voltage 20kV, frequency 10kHz;

[0112] S6. Install an advanced automatic detection and cleaning system, and the filter bag pressure difference response threshold is 200Pa;

[0113] S7. Install advanced environmental monitoring system with high degree of automation;

[0114] S8. Design an ultra-efficient heat exchange system with a temperature of 200°C to optimize waste heat utilization;

[0115] S9: Implement advanced energy management systems to carefully monitor and analyze energy usage.

[0116] After testing and demonstration, it was concluded that high-efficiency and energy-saving thermal power plants use high-power microwave processing and advanced flue gas treatment technology, combined with efficient energy management systems, to significantly improve energy efficiency and environmental protection performance.

[0117] Example 3:

[0118] S1. Purchase cost-effective coal and conduct basic infrared scanning screening;

[0119] S2, the coal was treated in a 1000W microwave processor for 2 minutes;

[0120] S3. Install the basic oxygen concentration sensor and adjust the oxygen content to 5%;

[0121] S4, bed temperature is set to 800°C, simplified automatic control system;

[0122] S5. Implement basic flue gas treatment system, voltage 8kV, frequency 500Hz;

[0123] S6. Install the basic automatic cleaning bag filter, with a pressure difference threshold of 500Pa;

[0124] S7. Install basic environmental monitoring equipment and manually adjust equipment settings;

[0125] S8. Design basic heat exchange system, temperature 100℃;

[0126] S9. Implement a basic energy management system to monitor energy consumption.

[0127] After testing and demonstration, it was concluded that the low-cost model thermal power plant adopts cost-effective technologies and equipment to achieve basic environmental emission control and energy management, and is suitable for scenarios with limited budgets.

[0128] Example 4:

[0129] S1. Purchase highly adaptable coal, through high-sensitivity infrared scanning and X-ray analysis;

[0130] S2, microwave treatment set to 1500W for 4 minutes;

[0131] S3, install an adaptive oxygen concentration sensor to automatically adjust the oxygen content to the optimal level;

[0132] S4. Install an advanced adaptive bed control system to automatically adjust the bed temperature and pressure;

[0133] S5, highly integrated flue gas treatment system, automatic adjustment of voltage and frequency;

[0134] S6, advanced automatic detection and cleaning system, adaptive filter bag detection;

[0135] S7, advanced environmental monitoring and automatic equipment adjustment system;

[0136] S8, high efficiency waste heat recovery system, temperature range 150-200℃;

[0137] S9, advanced energy management system, optimizes energy flow in real time.

[0138] After testing and demonstration, it was concluded that the highly adaptable environmental thermal power plant is highly automated and optimized through advanced adaptive technologies and systems, ensuring that optimal performance can be maintained under different operating conditions.

[0139] Example 5:

[0140] S1. Use the latest technology to screen and inspect coal;

[0141] S2, using new microwave technology, set to 2000W, process for 5 minutes;

[0142] S3, install the latest developed oxygen concentration sensor, accurately adjusted to 3%;

[0143] S4. Implement the latest bed temperature control technology, bed temperature 1000℃;

[0144] S5. Install innovative flue gas treatment technology to automatically adjust voltage and frequency;

[0145] S6. Install the latest developed intelligent bag dust removal system for automatic detection and cleaning;

[0146] S7. Implement the latest environmental monitoring and data analysis technologies;

[0147] S8, innovative waste heat recovery technology, temperature 200℃, maximize energy efficiency;

[0148] S9. Implement the most advanced energy management system to comprehensively optimize energy use.

[0149] After testing and demonstration, it was concluded that the application of innovative technologies in thermal power plants allows them to concentrate on using the latest technologies and equipment in the industry, thereby greatly improving the efficiency and accuracy of environmental emission control while optimizing energy use and management.

[0150] Through the above-mentioned various examples, it can be effectively proved that the method of the present invention, on the one hand, can accurately screen the coal through infrared and X-ray technology, control the sulfur and ash content from the source, significantly reduce the burden of desulfurization and deashing, reduce pollutants generated by combustion, and use microwave technology to treat the coal to destroy the sulfide structure, reduce the generation of sulfur oxides during combustion, and effectively reduce carbon dioxide emissions.

[0151] On the other hand, by combining the new low-nitrogen burner and oxygen concentration sensor for dynamic control, the combustion air ratio can be accurately managed, nitrogen oxide emissions can be significantly reduced, and strict environmental protection standards can be met. The waste heat in the flue gas can be recovered through the waste heat utilization system to generate steam or hot water, thereby improving overall energy efficiency and reducing energy consumption and operating costs.

[0152] Based on the same general inventive concept, the present invention also protects an environmentally friendly emission control device for a thermal power plant. The environmentally friendly emission control device for a thermal power plant provided by the present invention is described below. The environmentally friendly emission control device for a thermal power plant described below and the environmentally friendly emission control method for a thermal power plant described above can be referenced to each other.

[0153] Figure 2 It is a structural schematic diagram of the environmental protection emission control device of a thermal power plant provided in this embodiment.

[0154] like Figure 2 As shown, this embodiment provides a thermal power plant environmental emission control device, comprising:

[0155] Screening module 201, used to screen coal by infrared scanning and X-ray analysis to obtain coal with ultra-low sulfur and ultra-low ash content;

[0156] The microwave module 202 is used to perform microwave treatment on the ultra-low sulfur and ultra-low ash coal, and utilize the microwave heating effect to destroy the sulfide structure to obtain desulfurized coal;

[0157] A supply module 203 is used to dynamically adjust the combustion air supply of the desulfurized coal through a composite low-nitrogen burner in combination with an oxygen concentration sensor;

[0158] A monitoring module 204, for adaptively controlling the circulating fluidized bed under the combustion air supply, monitoring the bed temperature and pressure, and automatically adjusting reactor parameters based on the bed temperature and the pressure;

[0159] A cleaning module 205 is used to treat the combustion flue gas after the automatic adjustment of the reactor parameters by a flue gas treatment system of wet limestone-gypsum desulfurization and non-thermal plasma denitrification, and an intelligent bag filter with self-diagnosis and automatic cleaning functions;

[0160] An adjustment module 206, for monitoring the treated multiple harmful gases in real time through an integrated environmental monitoring system, and automatically adjusting equipment parameters of the environmental monitoring system;

[0161] The management module 207 is used to generate steam or hot water using the waste heat of flue gas when the content of the harmful gas reaches a preset standard, and monitor and optimize energy flow and consumption through an energy management system.

[0162] Furthermore, the screening module 201 in this embodiment is specifically used for:

[0163] At the beginning of the supply chain, select purchased coal with a sulfur content not exceeding 0.3% and an ash content not exceeding 10%;

[0164] Conducting a preliminary surface sulfur content test on the purchased coal using an infrared scanner, setting the scanner sensitivity to ±0.05% to identify coal exceeding the standard and obtaining coal meeting the sulfur standard;

[0165] The randomly selected samples of the sulfur-compliant coal are subjected to X-ray fluorescence spectrometer analysis to ensure that the ash content measurement accuracy is within the range of ±0.5%, thereby obtaining ultra-low sulfur and ultra-low ash coal.

[0166] Furthermore, the microwave module 202 in this embodiment is specifically used for:

[0167] Make sure the microwave equipment power for microwave treatment is between 1000-2000W;

[0168] The coal is treated for 2-5 minutes using the microwave equipment with a power between 1000 and 2000 W and the frequency is controlled to be 2.45 GHz to destroy the sulfide structure and obtain desulfurized coal.

[0169] Furthermore, the supply module 203 in this embodiment is specifically used for:

[0170] Determine an oxygen concentration sensor with a measurement range of 0%-10% and an adjustment accuracy of ±0.1%;

[0171] The proportion of combustion air is dynamically adjusted based on the feedback of the oxygen concentration sensor to ensure that the oxygen content in the combustion chamber is maintained between 3% and 5% of the combustion efficiency.

[0172] Furthermore, the monitoring module 204 in this embodiment is specifically used for:

[0173] Using the bed temperature sensor and pressure sensor of the circulating fluidized bed, the bed temperature is set at 800℃-1000℃, and the pressure is adjusted to ±10% of the rated operating pressure;

[0174] The automatic control system is used to adjust the wind speed and coal powder supply in real time according to the data of the bed temperature sensor and the pressure sensor.

[0175] Furthermore, the cleaning module 205 in this embodiment is specifically used for:

[0176] Design an integrated flue gas treatment unit including wet desulfurization section and plasma denitrification section;

[0177] Debugging the integrated flue gas treatment unit to ensure the flow and mixing efficiency of the limestone slurry and achieve the target desulfurization rate;

[0178] Setting a target voltage and frequency in the plasma denitration section to reduce nitrogen oxides;

[0179] The parameters of the integrated flue gas treatment unit are adjusted through continuous monitoring to adapt to different operating conditions and flue gas compositions.

[0180] Furthermore, in the wet desulfurization part of this embodiment, the pH value is adjusted to 5.5-7.5 and the conductivity is 1500-3500 μS / cm;

[0181] The target voltage and frequency are set in the plasma denitration section, including: in the non-thermal plasma part, the voltage range is set to 8-20kV, and the frequency is 500-10kHz.

[0182] Furthermore, the cleaning module 205 in this embodiment is also specifically used for:

[0183] An automatic cleaning system is formed by a sensor system that automatically detects filter bag blockage and damage;

[0184] The cleaning frequency and intensity are adjusted according to sensor feedback. In the automatic cleaning system, the pressure difference sensor response threshold of the bag filter is configured to be 200-500Pa, and the automatic cleaning start threshold is set to 300Pa.

[0185] Furthermore, the adjustment module 206 in this embodiment is specifically used for:

[0186] Equipped with multi-parameter environmental monitoring instruments including sulfur dioxide, nitrogen oxides, carbon dioxide and particulate matter;

[0187] Utilizing the data acquisition unit of the multi-parameter environmental monitoring instrument to collect and transmit monitoring data in real time;

[0188] The monitoring data is analyzed through integrated software, and the operating settings of related environmental protection equipment are automatically adjusted. When excessive emissions are detected, the corresponding equipment is automatically adjusted or shut down.

[0189] Furthermore, the management module 207 in this embodiment is specifically used for:

[0190] Determine the availability and energy content of flue gas waste heat;

[0191] Based on the availability and energy content, configure an efficient heat exchange system to recover heat energy from the flue gas, with a heat exchange temperature range of 100-200°C;

[0192] integrating said recovered heat energy with a steam or hot water network;

[0193] The integrated waste heat recovery efficiency is determined through energy monitoring equipment and feedback is provided to adjust system performance.

[0194] Figure 3 It is a schematic diagram of the structure of the electronic device provided in this embodiment.

[0195] like Figure 3 As shown, the electronic device may include: a processor 310, a communications interface 320, a memory 330 and a communications bus 340, wherein the processor 310, the communications interface 320 and the memory 330 communicate with each other through the communications bus 340. The processor 310 may call the logic instructions in the memory 330 to execute a method for controlling environmental emissions of a thermal power plant, the method comprising: screening coal by infrared scanning and X-ray analysis to obtain ultra-low sulfur and ultra-low ash coal; subjecting the ultra-low sulfur and ultra-low ash coal to microwave treatment, using the microwave heating effect to destroy the sulfide structure, and obtaining desulfurized coal; dynamically adjusting the combustion air supply of the desulfurized coal through a composite low-nitrogen burner in combination with an oxygen concentration sensor; adaptively controlling the circulating fluidized bed under the combustion air supply, monitoring the bed temperature and pressure, and based on the The bed temperature and the pressure automatically adjust the reactor parameters; after the reactor parameters are automatically adjusted, the combustion flue gas is treated by a flue gas treatment system of wet limestone-gypsum desulfurization and non-thermal plasma denitrification, and an intelligent bag filter with self-diagnosis and automatic cleaning functions; the various harmful gases after the treatment are monitored in real time by an integrated environmental monitoring system, and the equipment parameters of the environmental monitoring system are automatically adjusted; when the content of the harmful gas reaches the preset standard, steam or hot water is generated by utilizing the waste heat of the flue gas, and the energy flow and consumption are monitored and optimized through the energy management system.

[0196] In addition, the logic instructions in the above-mentioned memory 330 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program codes.

[0197] On the other hand, the present invention also provides a computer program product, which includes a computer program. The computer program can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the environmental emission control method of a thermal power plant provided by the above methods. The method includes: using infrared scanning and X-ray analysis to screen coal to obtain ultra-low sulfur and ultra-low ash coal; subjecting the ultra-low sulfur and ultra-low ash coal to microwave treatment, using the microwave heating effect to destroy the sulfide structure to obtain desulfurized coal; using a composite low-nitrogen burner in combination with an oxygen concentration sensor to dynamically adjust the combustion air supply of the desulfurized coal; in the combustion air Under the supply, the circulating fluidized bed is adaptively controlled, the bed temperature and pressure are monitored, and the reactor parameters are automatically adjusted based on the bed temperature and the pressure; after the reactor parameters are automatically adjusted, the combustion flue gas is treated by a flue gas treatment system of wet limestone-gypsum desulfurization and non-thermal plasma denitrification, and an intelligent bag filter with self-diagnosis and automatic cleaning functions; the various harmful gases after the treatment are monitored in real time by an integrated environmental monitoring system, and the equipment parameters of the environmental monitoring system are automatically adjusted; when the content of the harmful gas reaches the preset standard, steam or hot water is generated by utilizing the waste heat of the flue gas, and the energy flow and consumption are monitored and optimized through the energy management system.

[0198] On the other hand, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, is implemented to execute the environmental emission control method of a thermal power plant provided by the above-mentioned methods, the method comprising: using infrared scanning and X-ray analysis to screen coal to obtain ultra-low sulfur and ultra-low ash coal; subjecting the ultra-low sulfur and ultra-low ash coal to microwave treatment, using the microwave heating effect to destroy the sulfide structure, and obtaining desulfurized coal; using a composite low-nitrogen burner in combination with an oxygen concentration sensor to dynamically adjust the combustion air supply of the desulfurized coal; and under the combustion air supply, adaptively controlling the circulating fluidized bed. The bed temperature and pressure should be controlled and monitored, and the reactor parameters should be automatically adjusted based on the bed temperature and the pressure; after the reactor parameters are automatically adjusted, the combustion flue gas is treated by a flue gas treatment system of wet limestone-gypsum desulfurization and non-thermal plasma denitrification, and an intelligent bag filter with self-diagnosis and automatic cleaning functions; the various harmful gases after the treatment are monitored in real time by an integrated environmental monitoring system, and the equipment parameters of the environmental monitoring system are automatically adjusted; when the content of the harmful gas reaches the preset standard, steam or hot water is generated by utilizing the waste heat of the flue gas, and the energy flow and consumption are monitored and optimized through the energy management system.

[0199] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0200] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0201] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for controlling environmental emissions from a thermal power plant, characterized in that: include: Use infrared scanning and X-ray analysis to screen coal and obtain ultra-low sulfur and ultra-low ash coal; The ultra-low sulfur and ultra-low ash coal is subjected to microwave treatment to destroy the sulfide structure by microwave heating effect to obtain desulfurized coal; Dynamically adjust the combustion air supply of the desulfurized coal by using a composite low-nitrogen burner in combination with an oxygen concentration sensor; Under the combustion air supply, adaptively controlling the circulating fluidized bed, monitoring the bed temperature and pressure, and automatically adjusting reactor parameters based on the bed temperature and the pressure; After the reactor parameters are automatically adjusted, the combustion flue gas is treated by a flue gas treatment system of wet limestone-gypsum desulfurization and non-thermal plasma denitrification, and an intelligent bag filter with self-diagnosis and automatic cleaning functions; Through the integrated environmental monitoring system, the various harmful gases after the treatment are monitored in real time, and the equipment parameters of the environmental monitoring system are automatically adjusted; When the content of the harmful gas reaches the preset standard, the waste heat of the flue gas is used to generate steam or hot water, and the energy flow and consumption are monitored and optimized through the energy management system.

2. The method for controlling environmental emissions of thermal power plants according to claim 1, characterized in that: The method of screening coal by infrared scanning and X-ray analysis to obtain ultra-low sulfur and ultra-low ash coal includes: At the beginning of the supply chain, select purchased coal with a sulfur content not exceeding 0.3% and an ash content not exceeding 10%; Conducting a preliminary surface sulfur content test on the purchased coal using an infrared scanner, setting the scanner sensitivity to ±0.05% to identify coal exceeding the standard and obtaining coal meeting the sulfur standard; The randomly selected samples of the sulfur-compliant coal are subjected to X-ray fluorescence spectrometer analysis to ensure that the ash content measurement accuracy is within the range of ±0.5%, thereby obtaining ultra-low sulfur and ultra-low ash coal.

3. The method for controlling environmental emissions of a thermal power plant according to claim 1, characterized in that: The method of subjecting the ultra-low sulfur and ultra-low ash coal to microwave treatment to destroy the sulfide structure by microwave heating effect to obtain desulfurized coal comprises: Make sure the microwave equipment power for microwave treatment is between 1000-2000W; The coal is treated for 2-5 minutes using the microwave equipment with a power between 1000 and 2000 W and the frequency is controlled to be 2.45 GHz to destroy the sulfide structure and obtain desulfurized coal.

4. The method for controlling environmental emissions of a thermal power plant according to claim 1, characterized in that: The method of dynamically adjusting the combustion air supply of the desulfurized coal by using a composite low-nitrogen burner in combination with an oxygen concentration sensor comprises: Determine an oxygen concentration sensor with a measurement range of 0%-10% and an adjustment accuracy of ±0.1%; The proportion of combustion air is dynamically adjusted based on the feedback of the oxygen concentration sensor to ensure that the oxygen content in the combustion chamber is maintained between 3% and 5% of the combustion efficiency.

5. The method for controlling environmental emissions of a thermal power plant according to claim 1, characterized in that: Before the method of adaptively controlling the circulating fluidized bed, monitoring the bed temperature and pressure, and automatically adjusting the reactor parameters based on the bed temperature and the pressure, the method further comprises: Using the bed temperature sensor and pressure sensor of the circulating fluidized bed, the bed temperature is set at 800℃-1000℃, and the pressure is adjusted to ±10% of the rated operating pressure; The automatic control system is used to adjust the wind speed and coal powder supply in real time according to the data of the bed temperature sensor and the pressure sensor.

6. The method for controlling environmental emissions of a thermal power plant according to claim 1, characterized in that: The flue gas treatment system using wet limestone-gypsum desulfurization and non-thermal plasma denitrification processes the combustion flue gas, including: Design an integrated flue gas treatment unit including wet desulfurization section and plasma denitrification section; Debugging the integrated flue gas treatment unit to ensure the flow and mixing efficiency of the limestone slurry and achieve the target desulfurization rate; Setting a target voltage and frequency in the plasma denitration section to reduce nitrogen oxides; The parameters of the integrated flue gas treatment unit are adjusted through continuous monitoring to adapt to different operating conditions and flue gas compositions.

7. The method for controlling environmental emissions of a thermal power plant according to claim 6, characterized in that: The debugging of the integrated flue gas treatment unit includes: in the wet desulfurization part, adjusting the pH value range to 5.5-7.5 and the conductivity to 1500-3500 μS / cm; The target voltage and frequency are set in the plasma denitration section, including: in the non-thermal plasma part, the voltage range is set to 8-20kV, and the frequency is set to 500-10kHz.

8. The method for controlling environmental emissions of a thermal power plant according to claim 1, characterized in that: The combustion flue gas is treated by an intelligent bag filter with self-diagnosis and automatic cleaning functions, including: An automatic cleaning system is formed by a sensor system that automatically detects filter bag blockage and damage; The cleaning frequency and intensity are adjusted according to sensor feedback. In the automatic cleaning system, the pressure difference sensor response threshold of the bag filter is configured to be 200-500Pa, and the automatic cleaning start threshold is set to 300Pa.

9. The method for controlling environmental emissions of a thermal power plant according to claim 1, characterized in that: The real-time monitoring of the processed multiple harmful gases and the automatic adjustment of the equipment parameters of the environmental monitoring system include: Equipped with multi-parameter environmental monitoring instruments including sulfur dioxide, nitrogen oxides, carbon dioxide and particulate matter; Utilizing the data acquisition unit of the multi-parameter environmental monitoring instrument to collect and transmit monitoring data in real time; The monitoring data is analyzed through integrated software, and the operating settings of related environmental protection equipment are automatically adjusted. When excessive emissions are detected, the corresponding equipment is automatically adjusted or shut down.

10. The method for controlling environmental emissions of a thermal power plant according to any one of claims 1 to 9, characterized in that: The method of utilizing flue gas waste heat to generate steam or hot water comprises: Determine the availability and energy content of flue gas waste heat; Based on the availability and energy content, configure an efficient heat exchange system to recover heat energy from the flue gas, with a heat exchange temperature range of 100-200°C; integrating said recovered heat energy with a steam or hot water network; The integrated waste heat recovery efficiency is determined through energy monitoring equipment and feedback is provided to adjust system performance.

Images