Hydrogen metallurgy low-carbon cycle energy supply innovation system based on 700MW ultra-supercritical CFB thermal power plant and nuclear power plant coupling

Abstract

The invention discloses a hydrogen metallurgy low-carbon cycle energy supply innovation system based on 700MW ultra-supercritical CFB thermal power plant and nuclear power plant coupling. The system comprises a nuclear energy power generation module, a CFB boiler module, a hydrogen energy production module, a hydrogen metallurgy module and an energy storage and distribution module. The nuclear energy power generation module is used for generating power by using nuclear energy and supplying energy to the system; the CFB boiler module is used for pushing a steam turbine to rotate through steam generated by fuel combustion and driving the nuclear power generation module to generate power. The hydrogen energy production module is used for producing hydrogen; the hydrogen metallurgy module is used for carrying out metal smelting by utilizing the produced hydrogen; the energy storage and distribution module is used for storing electric energy and hydrogen energy generated by smelting and distributing the electric energy and the hydrogen energy according to industrial requirements.

Description

Technical Field

[0001] The present invention belongs to the technical field of energy conversion and supply, and in particular relates to an innovative hydrogen metallurgical low-carbon cycle energy supply system based on the coupling of a 700MW ultra-supercritical CFB thermal power plant and a nuclear power plant. Background Art

[0002] Traditional metallurgical processes mainly use fossil fuels such as coal as reducing agents and energy sources, leading to serious environmental pollution and carbon emissions. With the increasing global attention to environmental protection and climate change, the metallurgical industry is facing the pressure of transformation and upgrading, and needs to develop clean and efficient energy utilization technologies.

[0003] Nuclear energy, as a low-carbon and stable energy source, has the potential to provide large-scale heat and electricity. Hydrogen energy, as a clean energy carrier, has the characteristics of high energy density and zero carbon emissions, and plays an increasingly important role in the energy system. Converting nuclear energy to hydrogen energy can not only improve energy utilization efficiency, but also reduce dependence on fossil fuels and reduce greenhouse gas emissions, which is of great significance to promoting sustainable development. Summary of the invention

[0004] As a clean coal technology, the 700MW ultra-supercritical circulating fluidized bed (CFB) technology plays an important role in the field of clean coal technology due to its efficient fuel utilization and low pollution emissions. This technology reduces the emission of pollutants such as nitrogen oxides by improving the oxygen utilization rate during the combustion process and achieving a more uniform temperature distribution, while improving the combustion efficiency, providing a clean and efficient energy solution for the metallurgical industry. With the advancement of energy transformation, the concept of multi-energy complementary system (HESS) has emerged, aiming to reduce energy losses and extend system life by optimizing the energy conversion process. The multi-energy complementary system integrates the characteristics of nuclear energy, hydrogen energy and metallurgical processes to construct an efficient and clean system model of multi-energy complementary and synergistic energy supply, which helps to improve the overall efficiency of energy and reduce the impact on the environment.

[0005] To solve the above problems, the present invention provides a hydrogen metallurgical low-carbon cycle energy supply innovation system based on the coupling of a 700MW ultra-supercritical CFB thermal power plant and a nuclear power plant, comprising:

[0006] Nuclear power generation module, CFB boiler module, hydrogen production module, hydrogen metallurgy module and energy storage and distribution module;

[0007] The nuclear power generation module is used to generate electricity using nuclear energy and supply energy to the system;

[0008] The CFB boiler module is used to drive the steam turbine to rotate with the water vapor generated by fuel combustion, thereby driving the nuclear power generation module to generate electricity;

[0009] The hydrogen energy production module is used to produce hydrogen;

[0010] The hydrogen metallurgy module is used to utilize the produced hydrogen for metal smelting;

[0011] The energy storage and distribution module is used to store metal and hydrogen energy produced by smelting and distribute them according to industrial needs.

[0012] Optionally, the calculation parameters in the nuclear power generation module include: the thermal power, thermal energy conversion efficiency, electric power output and cooling water temperature and pressure of the monitored nuclear reactor.

[0013] Optionally, the high-temperature and high-pressure water vapor generated by the CFB boiler module cooperates with the high-temperature steam generated by the nuclear reactor to drive the steam turbine to rotate.

[0014] Optionally, the hydrogen energy production module uses nuclear energy produced by a nuclear reactor and thermal energy and electrical energy generated by the CFB boiler module to electrolyze water to produce hydrogen.

[0015] Optionally, the hydrogen energy production module further includes a hydrogen purity detection unit for performing purity detection on hydrogen produced by water electrolysis.

[0016] Optionally, the hydrogen production module has a hydrogen output of:

[0017]

[0018] Among them, P electrolyzer is the electrolytic cell input power, η electrolysis is the electrolysis efficiency, is the hydrogen production, ΔH water To relieve heat in water.

[0019] Optionally, in the energy storage and distribution module, the electric energy generated by the waste heat of metal smelting is generated by recovering the waste heat of metal smelting through a waste heat recovery system.

[0020] Beneficial effects:

[0021] The present invention realizes efficient conversion from nuclear energy to hydrogen energy through advanced energy conversion technology, significantly improving the overall energy utilization efficiency. This process not only reduces energy loss, but also reduces the impact on the environment. By optimizing the energy structure, the present invention significantly reduces the use of fossil fuels, thereby significantly reducing the emission of sulfur dioxide, nitrogen oxides and other harmful gases, and reducing pollution to the environment. The present invention reduces carbon emissions by 50%, making an important contribution to achieving global emission reduction goals. By improving energy conversion efficiency and optimizing energy distribution, the present invention enhances energy self-sufficiency, reduces dependence on external energy, and improves energy security. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0023] Figure 1 This is a system structure diagram of a hydrogen metallurgical low-carbon cycle energy supply innovation system based on the coupling of a 700MW ultra-supercritical CFB thermal power plant and a nuclear power plant according to an embodiment of the present invention;

[0024] Figure 2 Sensor data processing and energy allocation analysis for embodiments of the present invention;

[0025] Figure 3 It is used to supply standby hydrogen for the maintenance of the 700MW circulating fluidized bed boiler in the embodiment of the present invention;

[0026] Figure 4 This is a diagram of the energy supply coordination between a nuclear power plant and a CFB boiler according to an embodiment of the present invention;

[0027] Figure 5 Simulate the power supply, hydrogen production and environmental impact of industrial areas for the embodiments of the present invention;

[0028] Figure 6 The impact of clean energy on steel production and air quality in the embodiments of the present invention;

[0029] Figure 7 A comparison diagram of energy production and demand according to an embodiment of the present invention;

[0030] Figure 8 This is a diagram comparing the energy efficiency of a nuclear power plant and a CFB thermal power plant according to an embodiment of the present invention;

[0031] Fig. 9 This is a structural diagram of the energy system in the park according to an embodiment of the present invention;

[0032] Fig.10 This is a flow chart of the multi-energy complementary system according to an embodiment of the present invention. DETAILED DESCRIPTION

[0033] In order to better understand the technical solution of the present invention, the embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. It should be clear that the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The singular forms of "a", "said" and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

[0034] System composition:

[0035] (1) NPM: 1000MW nuclear reactor, produces high-temperature and high-pressure steam to drive the steam turbine to generate electricity.

[0036] (2) CFBM: 700MW CFB boiler, which burns coal to produce high-temperature and high-pressure steam, which drives the steam turbine to generate electricity.

[0037] (3) HPM: Utilizes heat and electricity generated by nuclear and CFB thermal power plants to produce hydrogen through water electrolysis.

[0038] (4) HMM: Use hydrogen to replace traditional carbon-based reducing agents for metal smelting.

[0039] (5) ESDM: includes battery energy storage system and high-pressure hydrogen storage tanks to ensure the stability and reliability of energy supply.

[0040] (6) IMS: collects data in real time to optimize energy distribution and reduce emissions.

[0041] Operation process

[0042] (1) NPM startup: The nuclear reactor is started by gradually raising the control rod position, maintaining a stable power output and generating 1000MW of thermal energy. The thermal energy conversion system converts high-temperature and high-pressure steam into electrical energy, with an electrical power output of 950MW.

[0043] (2) CFBM operation: The CFB boiler operates at a rated power of 700MW. By precisely controlling the coal feed and air volume, the combustion efficiency and pollutant emissions are ensured to be within the design standards. The high-temperature and high-pressure steam generated by the boiler drives the turbine to rotate, with an electrical power output of 650MW.

[0044] (3) HPM hydrogen production: Using the heat and electricity generated by nuclear and CFB thermal power plants, the electrolyzer is filled with deionized water and preheated to 70°C. A DC voltage of 1.5-2.0 volts is applied to the electrolyzer, and the current intensity is controlled at 2000-3000 amperes. The hydrogen production and purity are optimized by adjusting the electrolyte concentration and temperature. Through the pressure swing adsorption (PSA) system, the hydrogen purity is increased to more than 99.9%. The purified hydrogen is compressed to 350 bar and stored in a high-pressure hydrogen storage tank.

[0045] (4) HMM Metallurgy: Hydrogen is transported to the metallurgical furnace through pipelines to replace coke as a reducing agent, and the pressure in the furnace is controlled at 1-2 bar. At the same time, the furnace temperature and hydrogen flow rate are monitored to ensure the stability and efficiency of the metallurgical process. The hydrogen metallurgical module uses hydrogen to replace traditional carbon-based reducing agents for metal smelting, and strives to achieve the zero-carbon emission goal of steel production.

[0046] (5) ESDM energy storage and distribution: Excess electricity is stored in a lithium-ion battery energy storage system. The storage capacity is designed to meet at least 4 hours of peak load demand, and the battery management system (BMS) ensures the safety and life of the battery. Through smart grid technology, electricity is dynamically distributed to different loads according to demand, including industrial and residential electricity, to optimize the load balance and efficiency of the power grid.

[0047] (6) IMS Optimization: The integrated monitoring system collects data in real time, including temperature, pressure, flow, power output, hydrogen production, etc. It optimizes energy distribution and reduces emissions through artificial intelligence algorithms. The monitoring system includes data collection, processing and decision support functions. Figure 2 As shown in the sensor data processing and energy distribution analysis chart, the system performs well in sensor data processing, energy distribution and emission control. The original data becomes more stable after filtering, the energy distribution remains high and stable, and although the emission values ​​fluctuate at certain moments, the overall trend is relatively stable.

[0048] Embodiment 1

[0049] An innovative hydrogen metallurgical low-carbon cycle energy supply system based on the coupling of a 700MW ultra-supercritical CFB thermal power plant and a nuclear power plant, such as Figure 1 As shown, the system includes: nuclear power generation module, CFB boiler module, hydrogen production module, hydrogen metallurgy module and energy storage and distribution module;

[0050] The nuclear power generation module is used to generate electricity using nuclear energy and supply energy to the system.

[0051] The calculation parameters in the nuclear power generation module include: the thermal power of the nuclear reactor, the thermal energy conversion efficiency, the electrical power output, and the temperature and pressure of the cooling water. The nuclear power generation module includes a nuclear reactor and a thermal energy conversion system that can generate high-temperature and high-pressure steam to drive the subsequent energy conversion process.

[0052] The CFB boiler module is used to drive the steam generated by fuel combustion to rotate the steam turbine, driving the nuclear power generation module to generate electricity. The CFB boiler module adopts 700MW ultra-supercritical technology, which improves combustion efficiency and reduces pollution emissions. This efficient combustion technology provides a clean energy solution for the metallurgical industry. The nuclear power plant and CFB boiler energy supply in this embodiment work together as follows Figure 4 , Figure 4 (a) is the correlation analysis diagram between CFB boiler and nuclear power plant energy output. Figure 4 (b) is a graph showing the total system output, CFB boiler output, and load demand changes within 24 hours. It can be seen that the output of the nuclear power plant and CFB boiler fluctuates greatly at different time points, but overall they both try to meet the load demand, reflecting the coordination and cooperation capabilities of the two energy supply systems. This coordination is of great significance for ensuring the stability of energy supply and responding to demand fluctuations.

[0053] The high-temperature and high-pressure water vapor generated by the CFB boiler module and the high-temperature steam generated by the nuclear reactor cooperate to drive the steam turbine to rotate. In this embodiment, the nuclear reactor of the nuclear power plant is started by gradually raising the control rod position, and the nuclear reactor protection system is used to maintain a stable power output to generate 1000MW of thermal energy to ensure the safety and efficiency of the nuclear reactor.

[0054] The CFB boiler in this embodiment operates at a rated power of 700MW. By precisely controlling the coal feed and air volume, the combustion efficiency and pollutant emissions are ensured to be within the design standards, while reducing the emissions of nitrogen oxides and sulfides. High-temperature steam is connected to the steam generator through specially designed pipes, and the pressure and temperature are maintained at the set value by the automatic control system to ensure the optimal operating conditions of the steam turbine. In this embodiment, the steam drives the steam turbine to rotate at a speed of 3000RPM, and the generator efficiency reaches more than 95%. The power generation efficiency is improved by optimizing the excitation system and cooling system. Sensors are deployed around the CFB boiler and nuclear power plant to monitor SOx, NOx and particulate matter emissions in real time, and potential environmental risks are predicted and prevented through data analysis. The data collected by the sensors show good performance in sensor data processing, energy distribution and emission control. The original data becomes more stable after filtering, the energy distribution remains high and stable, and although the emission values ​​fluctuate at certain times, the overall trend is relatively stable, indicating that the system has been effectively controlled and optimized in these aspects.

[0055] The present invention designs the cooling water system as a closed loop, uses deionized water to prevent scaling and corrosion, maintains the cooling efficiency above 90%, and regularly inspects and maintains the cooling system to ensure its reliability.

[0056] The nuclear reactor generates high-temperature and high-pressure steam to drive the steam turbine to generate electricity. Its main parameter is the thermal power P of the nuclear reactor. nuclear (Unit: MW), thermal energy conversion efficiency η unclear (dimensionless), electrical power output P electric，nuclear (Unit: MW) and formula (1):

[0057] P electric，nuclear =P nuclear ×η nuclear (1)

[0058] The power balance constraints are as follows: renewable Represents the electrical energy output of the renewable energy module, P grid Represents the exchange of electrical energy with the grid.

[0059] P nuclear +P CFB +P renewable =P hydrogen +P metallurgy +P storage +P grid (2)

[0060] The hydrogen production module is used to produce hydrogen. The hydrogen production module uses the nuclear energy produced by the nuclear reactor and the heat and electricity generated by the CFB boiler module to electrolyze water to produce hydrogen. The hydrogen demand during the maintenance of the electrolyzer ensures the continuity and stability of the metallurgical process. The specific effect is shown as follows Figure 3 . The hydrogen production module also includes a hydrogen purity detection unit for detecting the purity of hydrogen produced by water electrolysis. The purity of hydrogen produced by electrolysis is detected to ensure that its purity is higher than 95% to meet the high standards of hydrogen metallurgy and other industrial applications. The water electrolysis method adopts AME electrolysis technology. CFBM generates high-temperature and high-pressure steam by burning fuels such as coal to drive the steam turbine to generate electricity. Its main parameters and formula (3) are as follows:

[0061] P electric，CFB =P boiler ×η combustion (3)

[0062] Among them, the boiler thermal power P boiler (Unit: MW), combustion efficiency η combustion (dimensionless), electrical power output P electric，CFB (Unit: MW); its operating constraints are as follows, and Respectively represent the minimum and maximum carbon emissions of the CFB boiler.

[0063]

[0064] HPM produces hydrogen by electrolyzing water. Its main parameters and formula (7) are as follows:

[0065]

[0066] Among them, the electrolytic cell input power P electrolyzer (Unit: MW), electrolysis efficiency η electrolysis (dimensionless), hydrogen production (Unit: kg / s), ΔH water is the electrolysis heat of water (unit: J / kg). The operating constraints of the electrolyzer are as follows:

[0067] I min ≤I≤I max (8)

[0068] V min ≤V≤V max (9)

[0069] H min ≤H produced ≤H max (10)

[0070] Among them, H min and H max Represent the minimum and maximum hydrogen production of the electrolyzer, respectively.

[0071] Based on this embodiment, the introduction of advanced AEM electrolysis technology improves the flexibility and dynamic response capability of the system, and can quickly respond to fluctuating renewable energy input.

[0072] This embodiment uses an electrolytic cell filled with deionized water and preheated to 70°C to improve the electrolysis efficiency. At the same time, the sealing and corrosion resistance of the electrolytic cell are checked to ensure long-term stable operation. This embodiment applies a DC voltage of 1.5-2.0 volts through the electrolytic cell, and the current intensity is controlled at 2000-3000 amperes. The production and purity of hydrogen are optimized by adjusting the electrolyte concentration and temperature of the electrolytic cell. This embodiment uses a pressure swing adsorption (PSA) system to increase the purity of hydrogen to more than 99.9%, while removing impurity gases such as oxygen and nitrogen to ensure the purity and safety of hydrogen. This embodiment designs the cooling water system as a closed loop, uses deionized water to prevent scaling and corrosion, maintains the cooling efficiency at more than 90%, and regularly inspects and maintains the cooling system to ensure its reliability.

[0073] The purified hydrogen is compressed to 350 bar and stored in a dedicated high-pressure hydrogen storage tank, which is made of high-strength materials to withstand high pressure and prevent leakage. In this embodiment, hydrogen is transported to the metallurgical furnace through a pipeline, replacing coke as a reducing agent, controlling the pressure in the furnace at 1-2 bar, and monitoring the furnace temperature and hydrogen flow rate to ensure the stability and efficiency of the metallurgical process. The high-temperature steam generated by the CFB boiler and the nuclear reactor is used to drive the direct electrolysis of seawater to produce hydrogen, which improves the efficiency and output of hydrogen production.

[0074] The hydrogen metallurgy module is used to use the produced hydrogen for metal smelting. The hydrogen metallurgy module uses hydrogen to replace traditional carbon-based reducing agents and fossil fuels for metallurgical production, achieving the goal of zero carbon emissions in steel production. The core goal of the hydrogen metallurgy module is to achieve zero carbon emissions in steel production. Compared with traditional blast furnace processes, hydrogen metallurgy can reduce carbon dioxide emissions by more than 50%.

[0075] The main parameters and formula (11) of using hydrogen to replace traditional carbon-based reducing agents for metal smelting are as follows:

[0076]

[0077] The hydrogen consumption rate (Unit: kg / s), metallurgical efficiency η metallurgy (dimensionless), metal production (Unit: kg / s).

[0078] ESDM is responsible for the storage and distribution of electrical energy and hydrogen energy. Its main parameters and formula (12) are as follows:

[0079]

[0080] The energy storage capacity E battery (Unit: MWh), charging and discharging power P charge，battery and P discharge，battery (Unit: MW); The operating constraints of the energy storage system are:

[0081] E storage min ≤E storage ≤E storage max (13)

[0082] P storage min ≤P storage ≤P storage max (14)

[0083] D min ≤D storage ≤D max (15)

[0084] Where D min and Dmax They represent the minimum and maximum discharge depth of the energy storage system respectively.

[0085]

[0086] Among them, the hydrogen storage capacity V hydrogen (Unit: m 3 )

[0087] The energy storage and distribution module is used to store the electricity generated by the waste heat of metal smelting and the electricity generated by the high-temperature and high-pressure steam driving the turbine, and distribute it according to industrial needs. The energy storage and distribution module includes an energy storage and distribution network, which ensures the stability and reliability of energy supply and meets the energy needs of plateau mining areas.

[0088] From the perspective of this embodiment, the nuclear power generation module and the CFB boiler module are the main sources of electricity. The nuclear power generation module generates high-temperature and high-pressure steam through the nuclear reactor to drive the steam turbine to generate electricity; the CFB boiler module generates high-temperature and high-pressure steam by burning coal to drive the steam turbine to generate electricity.

[0089] The relationship between metal smelting and electric energy:

[0090] In the metal smelting process (hydrogen metallurgy module), hydrogen is used as a reducing agent to replace traditional carbon-based reducing agents for metal smelting. The process itself mainly consumes hydrogen rather than directly generating electricity. However, some by-products or waste heat may be generated in the metal smelting process, which can be converted into electricity through a waste heat recovery system. For example, the high-temperature exhaust gas generated in the smelting process is recovered through a heat exchanger to drive a small steam turbine to generate electricity.

[0091] Storage of excess electrical energy:

[0092] During the operation of the system, the electricity generated by the nuclear power generation module and the CFB boiler module may exceed the immediate demand in the system (such as the demand of processes such as metal smelting) at certain times. In this case, the excess electricity can be stored by the energy storage and distribution module. The energy storage and distribution module mentioned in the article includes a battery energy storage system (such as a lithium-ion battery) and a high-pressure hydrogen storage tank. Excess electricity can be stored in the battery energy storage system for subsequent use.

[0093] Therefore, the electrical energy storage in the energy storage and distribution module is based on the overall energy conversion and distribution logic of the system, rather than directly derived from the metal smelting process itself.

[0094] Excess electricity is stored in a lithium-ion battery energy storage system, with a storage capacity designed to meet at least 4 hours of peak load demand. The battery management system (BMS) ensures the safety and life of the battery. Through smart grid technology, electricity is dynamically allocated to different loads, including industrial and residential electricity, according to demand, optimizing the load balance and efficiency of the power grid.

[0095] This example builds a multi-energy complementary system model to improve the overall efficiency of energy and reduce the impact on the environment by simulating and optimizing nuclear reactor design, hydrogen production process, hydrogen metallurgical process, and energy storage and distribution network. Fig.10 In the present invention, the output contents are mainly control instructions and energy allocation schemes. These output contents are used to guide the operation of the entire system, ensure the efficient conversion, storage and utilization of energy, and meet the energy requirements of different modules. The present invention reserves interfaces and spaces in the system design so that new energy conversion modules, such as solar photovoltaic panels or wind turbines, can be added in the future to adapt to the growth of energy demand and technological updates.

[0096] Embodiment 2

[0097] Taking the energy supply of remote industrial areas as an example, nuclear power plants and CFB thermal power plants are built to provide basic electricity for industrial areas. The steam and electricity generated are used to produce hydrogen through water electrolysis. Hydrogen is used in metallurgical plants in industrial areas to replace traditional fossil fuels. Through smart grid technology, power distribution is optimized to ensure the stability of energy supply. Ultimately, the overall effect of reducing energy costs, reducing environmental pollution, and improving energy self-sufficiency in industrial areas is presented.

[0098] Figure 5 The power supply, hydrogen production and environmental impact of the industrial area are simulated. Through the simulation and analysis data, it can be seen that this system reduces the dependence on fossil fuels by using efficient energy technology, thereby reducing the emission of greenhouse gases and gaseous pollutants. Through the improvement of energy production efficiency and technology, the cost of energy production is also reduced.

[0099] Embodiment 3

[0100] Environmental upgrade of urban steel plants: Build CFB thermal power plants and nuclear power plants near steel plants to provide clean energy. Use the heat and electricity of nuclear power plants and CFB thermal power plants to produce hydrogen. Use hydrogen in the steel production process to replace coal and coke. And balance power supply and demand through energy storage systems. This will significantly reduce carbon emissions from steel plants and improve urban air quality.

[0101] Depend on Figure 6They are the changes in hydrogen production over time, coal consumption over time, carbon emissions over time, and air quality index over time. Figure 6 (a) It can be seen that the change of hydrogen production over time is shown. The hydrogen production has gradually increased since 10 years, reaching a maximum of 4000 units. Figure 6 (b) shows the change of coal consumption over time. Coal consumption gradually increases from 10 years to the highest point of 10,000 units. Figure 6 (c) shows the change of carbon emissions over time. Carbon emissions gradually increase from 10 years ago, reaching a maximum of 1500 units. Figure 6 (d) shows the change of air quality index over time. The air quality index has gradually decreased since 2010, reaching a minimum of 179 units. From a comprehensive analysis, hydrogen production and coal consumption have increased over time, which may indicate that the demand for energy in the steel production process is increasing. Carbon emissions are also increasing, which may be caused by the increase in coal consumption. The decrease in the air quality index may indicate that air quality is deteriorating, which may be related to the increase in carbon emissions.

[0102] Embodiment 4

[0103] Electricity and fresh water supply for islands: Build nuclear power plants and CFB thermal power plants on the islands to provide electricity. Use the thermal energy of nuclear power plants and CFB thermal power plants to produce fresh water through seawater desalination systems. Produce hydrogen through electrolysis of desalinated seawater for transportation and industry on the islands. And optimize the distribution of electricity and hydrogen through energy management systems. This provides stable electricity and fresh water for the islands, while reducing the overall effect of dependence on fossil fuels. Figure 7 It can be seen that electricity demand is usually allocated and managed according to the needs of industrial production, residents' lives, etc. The production of fresh water is much higher than the demand, indicating that there is sufficient fresh water supply capacity, which may be used for storage or other purposes. The production of hydrogen is 715.50kg, while the daily hydrogen demand is 50.00kg. The production of hydrogen is also higher than the demand, indicating that there is sufficient hydrogen production capacity, which may be used for industry, transportation or other application scenarios. Overall, the figure shows that there is a large surplus between energy production and demand, especially in fresh water and hydrogen. This shows that the current production capacity can meet the current or future demand, but the specific scheduling and management still need to be optimized and adjusted according to actual needs.

[0104] Embodiment 5

[0105] Green energy supply for data centers: Build nuclear power plants and CFB thermal power plants near data centers to provide stable electricity. Use the heat and electricity from nuclear power plants and CFB thermal power plants to produce hydrogen. Use hydrogen for backup generators in data centers to reduce dependence on the power grid. Optimize power distribution and improve energy efficiency through smart grid technology. This will reduce energy costs, reduce carbon emissions, and improve energy security for data centers.

[0106] Depend on Figure 8 The power output and hydrogen production of nuclear power plants and CFB thermal power plants, as well as the use of backup generators, are shown in the figure. Nuclear power plants provide clean electricity and hydrogen, while CFB thermal power plants rely on fossil fuels. The hydrogen production capacity of nuclear power plants and CFB thermal power plants shows that both energy facilities have the ability to convert energy into hydrogen. The use of backup generators is an indicator of power system reliability, which ensures that power supply can be quickly restored when problems occur in the main power grid. These data provide an in-depth understanding of the power output and hydrogen production capacity of different energy facilities in the island energy management system, which helps to evaluate the efficiency and sustainability of the energy structure.

[0107] Embodiment 6

[0108] Green Chemical Park Construction: Nuclear power plants and CFB thermal power plants are built in the park to provide electricity and heat. The heat and electricity of nuclear power plants and CFB thermal power plants are used to produce hydrogen. Hydrogen is used in the chemical production process to replace traditional fossil fuels. The energy storage and distribution system ensures the stability of energy supply. This achieves zero carbon emissions in the chemical park and improves the international competitiveness of the park.

[0109] Depend on Fig. 9 Show the composition of the energy system in the park. The park's energy system is diversified, including nuclear energy, fossil fuels, hydrogen energy and other energy forms. Hydrogen production occupies an important position in the park's energy system, which means that the park is actively promoting energy transformation and the use of clean energy. Energy storage is crucial to ensuring the stability of energy supply and responding to fluctuations in energy demand.

[0110] Embodiment 7

[0111] Environmental upgrade of urban steel plants: Urban steel plants are large consumers of energy and carbon emitters. Traditional steel production mainly relies on coal and coke, which leads to serious environmental pollution and high carbon emissions. In order to achieve environmental upgrade, a green metallurgical integrated energy supply system is adopted, which uses 700MW ultra-supercritical CFB and nuclear power units to couple seawater to directly produce hydrogen.

[0112] The embodiments of the present disclosure are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present disclosure should be included in the scope of protection of the present disclosure.

Claims

1. Hydrogen metallurgical low-carbon cycle energy supply innovation system based on the coupling of 700MW ultra-supercritical CFB thermal power plant and nuclear power plant, the system includes: Nuclear power generation module, CFB boiler module, hydrogen production module, hydrogen metallurgy module and energy storage and distribution module; The nuclear power generation module is used to generate electricity using nuclear energy and supply energy to the system; The CFB boiler module is used to drive the steam turbine to rotate with the water vapor generated by fuel combustion, thereby driving the nuclear power generation module to generate electricity; The hydrogen energy production module is used to produce hydrogen; The hydrogen metallurgy module is used to utilize the produced hydrogen for metal smelting; The energy storage and distribution module is used to store the electric energy generated by the waste heat of metal smelting and the electric energy generated by the high-temperature and high-pressure steam driving the steam turbine, and distribute it according to industrial needs.

2. The innovative hydrogen metallurgical low-carbon cycle energy supply system based on the coupling of a 700MW ultra-supercritical CFB thermal power plant and a nuclear power plant according to claim 1 is characterized in that: The calculation parameters in the nuclear power generation module include: the thermal power of the nuclear reactor, the thermal energy conversion efficiency, the electric power output and the temperature and pressure of the cooling water obtained by monitoring.

3. The innovative hydrogen metallurgical low-carbon cycle energy supply system based on the coupling of a 700MW ultra-supercritical CFB thermal power plant and a nuclear power plant according to claim 1 is characterized in that: The high-temperature and high-pressure water vapor generated by the CFB boiler module and the high-temperature steam generated by the nuclear reactor cooperate to drive the steam turbine to rotate.

4. The innovative hydrogen metallurgical low-carbon cycle energy supply system based on the coupling of a 700MW ultra-supercritical CFB thermal power plant and a nuclear power plant according to claim 1 is characterized in that: The hydrogen energy production module uses the nuclear energy produced by the nuclear reactor and the heat energy and electric energy generated by the CFB boiler module to electrolyze water to produce hydrogen.

5. The innovative hydrogen metallurgical low-carbon cycle energy supply system based on the coupling of a 700MW ultra-supercritical CFB thermal power plant and a nuclear power plant according to claim 4 is characterized in that: The hydrogen energy production module also includes a hydrogen purity detection unit for performing purity detection on the hydrogen produced by electrolysis of water.

6. The innovative hydrogen metallurgical low-carbon cycle energy supply system based on the coupling of a 700MW ultra-supercritical CFB thermal power plant and a nuclear power plant according to claim 4 is characterized in that: The water electrolysis method adopts AME electrolysis technology.

7. The innovative hydrogen metallurgical low-carbon cycle energy supply system based on the coupling of a 700MW ultra-supercritical CFB thermal power plant and a nuclear power plant according to claim 4 is characterized in that: The hydrogen production module has a hydrogen output of: Among them, P electrolyzer is the electrolytic cell input power, η electrolysis is the electrolysis efficiency, is the hydrogen production, ΔH water To relieve heat in water.

8. The innovative hydrogen metallurgical low-carbon cycle energy supply system based on the coupling of a 700MW ultra-supercritical CFB thermal power plant and a nuclear power plant according to claim 1 is characterized in that: In the energy storage and distribution module, the electric energy generated by the waste heat of metal smelting is generated by recovering the waste heat of metal smelting through a waste heat recovery system.

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