Thermal power plant plant factory comprehensive energy utilization system and performance evaluation method

Abstract

The invention discloses a thermal power plant plant factory comprehensive energy utilization system and a performance evaluation method, the system integrates five modules of flue gas CO2 supply, multi-source collaborative energy supply, solid waste recycling, water and nutrition combined supply and an intelligent management platform, and collaborative matching of thermal power plant carbon-energy-water-solid waste resources and plant factory light-temperature-water-fertilizer demands is realized; the intelligent platform dynamically coordinates multi-source energy and load, and the resource utilization rate is improved. Performance evaluation establishes a quantitative system from the dimensions of energy efficiency, carbon emission reduction efficiency and cost effectiveness, promotes low-carbon transformation of a thermal power plant, and reduces the operation cost of a plant factory.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of comprehensive energy, and particularly relates to a thermal power plant plant factory comprehensive energy utilization system and a performance evaluation method. BACKGROUND

[0002] Building a new power system with new energy as the main body is an important direction of power system transformation and upgrading. The International Energy Agency (IEA) proposes that by 2070, the global CO2 emission will be nearly zero, and the CCUS technology will contribute about 19% of the carbon emission reduction. The development of CCUS projects is currently mainly restricted by investment costs, operating costs and resource utilization of carbon dioxide. A 1000 MW unit carbon emission can reach 5.6 million tons / year. A typical 300 MW coal-fired unit emits 1.9 million tons / year, and the food-grade liquid carbon dioxide produced by capture can meet the demand of the economically developed Yangtze River Delta region. Geological utilization such as oil displacement and gas displacement can achieve large-scale utilization but is affected by geological conditions and oil fields. The market capacity of physical utilization methods such as preservation, refrigeration and fire fighting is small, and mineralization, chemical and biological utilization are expected to become the main way of large-scale resource utilization of carbon dioxide.

[0003] The combination of thermal power units and plant factories with biological carbon sequestration provides a sustainable and eco-friendly technical route for energy clean and low-carbon transformation. Building a large plant factory in a thermal power plant can partially absorb and utilize flue gas carbon dioxide to supply plant photosynthesis gas fertilizer, thereby contributing to carbon emission reduction of the thermal power plant. On the other hand, providing low-cost electricity or even peak shaving and frequency modulation surplus electricity in the thermal power plant to the full artificial light three-dimensional vertical plant factory can greatly reduce the electricity cost of artificial light and realize local consumption of new energy generation. The existing steam or flue gas waste heat, water, flue gas CO2 and other resources in the power plant can provide sufficient energy supply for plant / microbial photosynthesis growth, effectively improve the comprehensive energy utilization efficiency of the power plant, greatly reduce the comprehensive operation cost of the plant factory, solve the problem of high energy consumption and cost of existing plant factories, and improve the comprehensive energy utilization efficiency of the system.

[0004] Therefore, the thermal power plant faces problems such as high carbon emission reduction pressure, low utilization rate of surplus flue gas waste heat, water, flue gas CO2, etc. The plant factory has high energy consumption and high operating costs due to artificial lighting, temperature control and water purification. The existing technology lacks a collaborative technical architecture and quantitative evaluation system for thermal power plants and plant factories, making it difficult to achieve efficient coupling of resources. SUMMARY

[0005] The purpose of the present application is to overcome the problem of lack of a collaborative technical architecture and quantitative evaluation system for thermal power plants and plant factories, and to provide a thermal power plant plant factory comprehensive energy utilization system and a performance evaluation method.

[0006] To achieve the above object, the present application adopts the following technical solutions: In a first aspect, the present application provides a thermal power plant plant factory comprehensive energy utilization system, comprising: A flue gas CO2 supply module, comprising a flue gas CO2 capture device and a carbon dioxide gas flow control device, the carbon dioxide gas flow control device being connected to a soilless cultivation planting area of the plant factory through a pipeline, the pipeline being provided with a flow regulation device, the soilless cultivation planting area being provided with a CO2 concentration monitoring unit, the flow regulation device being in communication connection with the CO2 concentration monitoring unit; A multi-source collaborative energy supply module, comprising an electric power supply unit and a waste heat supply unit; the photovoltaic power generation input end of the electric power supply unit being connected to a plant area distributed photovoltaic system, the peak shaving surplus power input end of the electric power supply unit being connected to a power plant self-generation system, the plant area distributed photovoltaic system and the power plant self-generation system distributing plant factory lighting and equipment operation power through a power supply control module; the waste heat supply unit being connected to a power plant circulating water tail water system, recovering waste heat through a temperature monitoring and control system, and regulating and controlling the temperature and humidity of the plant factory; A solid waste resourceization module, comprising a power plant solid waste treatment device, which provides a cultivation substrate to the soilless cultivation planting area after treating the thermal power plant solid waste through solid waste substrate cultivation utilization treatment; A water and nutrient combined supply module, comprising a chemical desalted water supply end connected to a nutrient solution configuration and control system, which supplies nutrient solution to the soilless cultivation planting area; An intelligent management platform, comprising an intelligent sensor and an Internet of Things, which is in communication connection with the flue gas CO2 supply module, the multi-source collaborative energy supply module, the solid waste resourceization module, and the water and nutrient combined supply module, collects operation parameters in real time, and coordinates the dynamic matching of electric power, waste heat, CO2, and nutrient solution.

[0007] Further, the operation parameters include CO2 concentration, electric power load, substrate characteristics, and nutrient solution parameters.

[0008] Further, the thermal power plant solid waste includes fly ash and slag, and the power plant solid waste treatment device adopts an alkali fusion activated geopolymer solidification collaborative process.

[0009] Further, the flow regulation device of the flue gas CO2 supply module proportionally adjusts according to CO2 concentration deviation, so as to maintain the CO2 concentration in the planting area within the range of plant photosynthesis.

[0010] Further, the waste heat supply unit utilizes the heat energy of circulating water tail water to adjust the temperature and humidity of the plant factory through heat exchange.

[0011] Further, the nutrient solution configuration and control system monitors water quality and flow online, and the monitoring parameters of the water quality include EC value and pH value.

[0012] Further, the intelligent management platform monitors the running state parameters of each module in real time, and generates regulation and control instructions according to the monitoring data, and the running state parameters include CO2 concentration, power load, substrate pH value, nutrient solution EC value, etc.

[0013] Further, the soilless cultivation planting area is provided with a full-cycle LED lighting system, and the power of the full-cycle LED lighting system is provided by the multi-source collaborative energy supply module.

[0014] Further, the cultivation substrate is adjusted in component proportion according to the plant type.

[0015] In the second aspect, the present application provides a performance evaluation method of a thermal power plant plant factory comprehensive energy utilization system, comprising the following steps: The ratio of the total energy consumption of the system in a certain period to the plant yield is calculated to obtain the energy output rate, and the energy utilization efficiency is evaluated by using the energy output rate; The amount of CO2 fixed by unit yield of plants is calculated based on the proportion of dry weight to fresh weight of plants and the carbon element content in dry biomass, to obtain the unit yield of carbon fixation; The energy carbon density is calculated by the ratio of the unit yield of carbon fixation to the energy output rate; The carbon utilization rate is calculated by the ratio of the unit yield of carbon fixation to the input flue gas CO2 mass; The cost saving amount of the dimensions of ultrapure water, CO2, fertilizer, electricity and waste heat utilization is calculated; The ratio of the sum of the cost saving amount of the dimensions of ultrapure water, CO2, fertilizer, electricity and waste heat utilization to the total cost of the plant factory without using the thermal power plant plant factory comprehensive energy utilization system is calculated to obtain the comprehensive cost reduction of the plant factory using the thermal power plant plant factory comprehensive energy utilization system.

[0016] Compared with the prior art, the present application has the following beneficial technical effects: The application provides a thermal power plant plant factory comprehensive energy utilization system, which combines the green low-carbon transformation of a thermal power unit and the demand for thermal power flexibility, studies comprehensive energy utilization technology for deep integration of the energy industry and modern agriculture, and has carried out application demonstration, develops and constructs the first full-automatic artificial light plant factory combined with the comprehensive energy utilization of the thermal power unit, and further analyzes the function of the plant factory in absorbing existing energy resources and carbon emission reduction of the power plant. The resources such as distributed photovoltaic, peak regulation surplus power or low valley power, circulating water waste heat, chemical desalted water (ultra-pure water) and the like are fully utilized to form a strong coupling relationship with the core elements such as light, temperature and water for plant growth. Photovoltaic green power or low valley power is used for power supply. The circulating water waste heat in the plant area assists the heat load demand of the plant factory, and the water quality standard of the surplus ultra-pure water in the plant area is much higher than that of the existing conventional plant factory water quality, so as to provide necessary water source for the plant factory. The coal ash substrate of the solid waste of the thermal power plant is used for cultivating crops. In addition, a smart comprehensive energy management platform of the plant factory in the thermal power plant is built to realize the collaborative operation between the source-load of the thermal power peak regulation, frequency regulation surplus power, photovoltaic and plant factory power and the like, realize more accurate quantitative scientific management and overall optimization of each module of the system, and reduce the comprehensive operation cost by about 14.78% than that of the conventional plant factory, and the carbon sequestration capacity per mu is more than 3 times of that of the forest, which provides an innovative solution for the green low-carbon transformation development of the traditional coal power enterprises. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings described herein are only for illustrative purposes, and are not intended to limit the scope of the present application in any way. In addition, the shape and scale of each component in the drawings are only illustrative, and are used to help understand the present application, and are not specific limitations on the shape and scale of each component of the present application. In the drawings: Figure 1 It is a structural diagram of a thermal power plant plant factory comprehensive energy utilization system.

[0018] Figure 2 It is a performance evaluation method flow chart of a thermal power plant plant factory comprehensive energy utilization system. DETAILED DESCRIPTION

[0019] In order to enable the persons skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the persons skilled in the art without creative labor should belong to the scope of protection of the present application.

[0020] It is to be understood that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. In addition, it is to be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can also be present. As used herein the terms "vertical", "horizontal", "left", "right" and the like are merely used for the purpose of illustration and are not intended to be limiting.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0022] It is to be understood that the terms "first", "second", and the like, used in the description and the claims of this application, as well as above-mentioned drawings, are used to differentiate between similar objects, and are not necessarily used to describe a particular sequential or chronological order. It is to be understood that the use of the terms so

[0023] Embodiment one Referring to Figure 1 A power plant-plant factory integrated energy utilization system, comprising: A flue gas CO2 supply module, comprising a flue gas CO2 capture device and a carbon dioxide gas flow control device, the carbon dioxide gas flow control device being connected to a soilless cultivation planting area of the plant factory through a pipeline, the pipeline being provided with a flow regulation device, the soilless cultivation planting area being provided with a CO2 concentration monitoring unit, the flow regulation device being in communication connection with the CO2 concentration monitoring unit; A multi-source collaborative energy supply module, comprising an electric power supply unit and a waste heat supply unit; a photovoltaic power generation input end of the electric power supply unit being connected to a plant area distributed photovoltaic system, a peak shaving excess power input end of the electric power supply unit being connected to a power plant self-generation system, the plant area distributed photovoltaic system and the power plant self-generation system being connected to a power supply control module to distribute plant factory lighting and equipment operation electric power; the waste heat supply unit being connected to a power plant circulating water tail water system to recover waste heat through a temperature monitoring and control system to regulate and control plant factory temperature and humidity; The solid waste resourceization module includes a power plant solid waste treatment device, which provides the cultivation substrate to the soilless cultivation planting area after treating the solid waste substrate of the power plant. The water and nutrient supply module includes a chemical desalted water supply end connected to a nutrient solution configuration and control system, which supplies nutrient solution to the soilless cultivation planting area. The intelligent management platform includes an intelligent sensor and an Internet of Things, which are in communication with the flue gas CO2 supply module, the multi-source collaborative energy supply module, the solid waste resourceization module, and the water and nutrient supply module, and real-time collection of operating parameters, coordination of power, waste heat, CO2, and nutrient solution dynamic matching.

[0024] In terms of resource utilization, the flue gas CO2 supply module realizes CO2 capture and reuse, reduces emissions, and promotes plant growth; the multi-source collaborative energy supply module integrates photovoltaic and power plant self-generation, reasonably allocates power, recovers power plant waste heat to regulate temperature and humidity, and improves energy utilization. The solid waste resourceization module converts power plant solid waste into cultivation substrate, realizing waste resourceization. The water and nutrient supply module precisely supplies nutrient solution to meet the nutritional needs of plants. The intelligent management platform uses intelligent sensors and the Internet of Things to real-time collect operating parameters of each module, dynamically coordinate power, waste heat, CO2, and nutrient solution matching, and realize efficient and stable operation of the system. The system not only reduces the environmental burden of the power plant and improves the comprehensive utilization efficiency of resources, but also provides sustainable energy and material support for the plant factory, realizing the collaborative development of the power plant and the plant factory, with high economic and ecological benefits.

[0025] The operating parameters include CO2 concentration, power load, substrate characteristics, and nutrient solution parameters. The power plant solid waste includes fly ash and slag, and the power plant solid waste treatment device adopts an alkali fusion activated geopolymer solidification collaborative process. The flow control device of the flue gas CO2 supply module adjusts the proportion according to the CO2 concentration deviation to maintain the CO2 concentration in the planting area within the plant photosynthesis range. The waste heat supply unit uses the heat energy of the circulating water tail water to adjust the temperature and humidity of the plant factory through heat exchange. The nutrient solution configuration and control system monitors water quality and flow online, and the monitoring parameters of water quality include EC value and pH value. The intelligent management platform monitors the operating state parameters of each module in real time, and generates control instructions according to the monitoring data. The operating state parameters include CO2 concentration, power load, substrate pH value, and nutrient solution EC value. The soilless cultivation planting area is equipped with a full-cycle LED lighting system, and the power of the full-cycle LED lighting system is provided by the multi-source collaborative energy supply module. The cultivation substrate adjusts the ingredient proportion according to the plant species.

[0026] The operation parameters of the embodiment cover various aspects, enabling precise control of each link, such as CO2 concentration deviation proportion adjustment to maintain an appropriate range for plant photosynthesis; online monitoring of EC value and pH value of nutrient solution, etc. to ensure plant nutrition. The solid waste of thermal power plants is treated by special process to become cultivation substrate, and the component proportion can be adjusted according to plant species to realize efficient utilization of resources. The waste heat supply unit adjusts temperature and humidity with the heat energy of circulating water tail water, which is energy-saving and environmentally friendly. The whole cycle LED lighting system is powered by multiple sources to provide stable light. The intelligent management platform monitors the operation state parameters in real time, such as substrate pH value, and generates control instructions to realize intelligent linkage and dynamic matching of each module. This system integrates various energy and resources, improves the utilization rate of waste of thermal power plants, reduces environmental pressure, creates good growth conditions for plant factories, achieves mutual benefit and win-win between thermal power plants and plant factories, and has economic and ecological value.

[0027] Embodiment two Referring to Figure 2 A performance evaluation method of a thermal power plant plant factory comprehensive energy utilization system, comprising the following steps: Calculate the ratio of total energy consumption of the system in a certain period to plant yield to obtain energy output rate, and use the energy output rate to evaluate energy utilization efficiency; Based on the proportion of plant dry weight to fresh weight and the carbon element content in dry biomass, calculate the amount of CO2 fixed by unit yield of plants to obtain unit yield of carbon fixation; Calculate the energy carbon density by the ratio of unit yield of carbon fixation to energy output rate; Calculate the carbon utilization rate by the ratio of unit yield of carbon fixation to input flue gas CO2 mass; Calculate the cost saving amount of ultrapure water, CO2, fertilizer, electricity and waste heat utilization dimensions; Calculate the ratio of the sum of cost saving amount of ultrapure water, CO2, fertilizer, electricity and waste heat utilization dimensions to the total cost of plant factory without using a thermal power plant plant factory comprehensive energy utilization system to obtain the comprehensive cost reduction of plant factory using a thermal power plant plant factory comprehensive energy utilization system.

[0028] This embodiment, by calculating the energy output rate, can intuitively assess the system's energy utilization efficiency, clearly understand the relationship between input and output at the energy level, and provide a basis for optimizing energy allocation. The calculation of carbon sequestration per unit output and energy carbon sequestration density can measure the system's performance in carbon sequestration, highlighting its value in addressing climate change and reducing carbon emissions. The calculation of carbon utilization rate helps assess the system's utilization of flue gas CO2 and explore the potential for improving CO2 utilization efficiency. Finally, by calculating cost savings and overall cost reduction from multiple dimensions such as ultrapure water, CO2, fertilizer, electricity consumption, and waste heat utilization, the economic benefits of the system can be comprehensively and accurately assessed, clearly demonstrating the advantages of using this system in cost control. In summary, this evaluation method provides quantitative evidence for system performance from multiple aspects, including energy, environment, and economy, which is conducive to system optimization and promotion.

[0029] Example 3 See Figure 1 A schematic diagram of the integrated energy utilization system of a plant factory in a thermal power plant. Energy input: The tailwater of the power plant's circulating water is connected to the temperature monitoring and control system. Distributed photovoltaic power in the plant area, power plant self-generated power, and peak-shaving power are connected to the power supply control module. The two work together to provide energy for the system. Carbon input: Flue gas CO2 is transported to the hydroponics planting area via a carbon dioxide capture device and a carbon dioxide airflow control device; Solid waste utilization: Solid waste from power plants (fly ash, slag, etc.) is processed by solid waste substrate cultivation technology and the resulting cultivation substrate is delivered to the planting area; Water and nutrient supply: Chemically desalinated water is connected to the nutrient solution preparation and control system for precise supply to the planting area; Intelligent control: Smart sensors and the Internet of Things collect data and transmit it to the intelligent management platform. The platform outputs control signals to the power supply control module, temperature monitoring and control system, and full-cycle environmental control system to achieve comprehensive dynamic control of the planting area.

[0030] A comprehensive energy utilization system for a plant factory in a thermal power plant includes: Flue gas CO2 direct supply module: Purified flue gas from thermal power plants (CO2 concentration 8-20%) or captured CO2 is connected to the plant factory cultivation room through gas pipelines. Equipped with a group of solenoid valves and a CO2 concentration sensor, it realizes the replacement of artificial gas fertilizer with flue gas CO2. When the concentration exceeds 1000 ppm, it automatically cuts off the gas supply and starts the exhaust and fresh air circulation.

[0031] Plant Factory Multi-Source Collaborative Energy Supply Module: Peak-shaving surplus power input end is connected to the deep peak-shaving system of thermal power unit, photovoltaic power generation input end is connected to the distributed photovoltaic system in the plant area, and waste heat input end is connected to the circulating water and tail gas pipeline. Solid waste resource module: fly ash is modified by geopolymer solidification reactor (heavy metal leaching concentration <0.001 mg / L), and pH self-adaptive adjustment of the output cultivation medium, 20%≤substrate replacement rate≤60%; Water-nutrient supply module: chemical desalination water (EC value ≤1.67 μs / cm) of power plant is directly connected to the nutrient solution configuration system, which saves water purification equipment and purification cost, and is equipped with flow and water quality online monitor.

[0032] Intelligent management platform: real-time coordination of dynamic allocation of peak shaving power, photovoltaic output and plant factory load, response delay ≤200 ms.

[0033] In the flue gas CO2 direct supply module, the opening of the electromagnetic valve group is proportional to the deviation value ΔC of the flue gas CO2 concentration and the set concentration of the cultivation room, which is automatically adjusted in real time according to the concentration gradient change and the CO2 concentration limit value: Opening ratio K=K0+K p ×ΔC (K p 0.5≤K p ≤2.0) The solid waste resource module reduces the risk of heavy metal pollution (such as cadmium, lead, arsenic, etc.) associated with fly ash utilization to the greatest extent, while retaining the minerals and trace elements (such as zinc, copper, manganese) required for plant growth (such as silicon, calcium, iron) to the greatest extent. Through the alkali fusion activation-geopolymer solidification collaborative process, the stable storage of heavy metals and the targeted release of beneficial elements are realized.

[0034] The pH self-adaptive unit controls the injection of citric acid or sodium bicarbonate solution through peristaltic pump based on the real-time feedback of pH value from the substrate sensor network, maintains the substrate pH 5.5-6.5, and meets the suitable pH range for plant growth.

[0035] The circulating water waste heat in the thermal power plant area is used to provide cold and heat load for the plant factory, and the heat load calculation method is as follows: The circulating water waste heat temperature is T1 (℃), the indoor planting room temperature is T2 (℃), the effective area of the circulating water waste heat pipeline in contact with the air in the planting room and the heat exchange is A (m 2 ), K is the heat transfer coefficient (unit: W / (m 2 ·℃).

[0036] Q= K×A×|T1-T2| The total exchange heat is

[0037] The circulating water temperature is relatively stable, which provides a cold source for the plant factory system in summer and a heat source for the plant factory system in winter, thereby reducing the energy consumption of the air conditioning system for refrigeration and heating.

[0038] In the water-nutrient combined supply module, the ultra-pure water used for generating steam to do work and generate electricity in the thermal power plant area is connected to the plant factory system through a pipeline, and is directly configured as a plant cultivation nutrient solution, and the EC value control precision is ±10μs / cm.

[0039] A performance evaluation method of a thermal power plant plant factory comprehensive energy utilization system, comprising: The system energy output rate is defined as § (kW·h / kg), which is the energy consumption required for unit output, usually the vegetable yield in a certain period divided by the total energy consumption in the period.

[0040] Carbon emission reduction performance, define the proportion of dry weight in fresh weight of vegetables as α (%), 1-α is the water content, and the carbon content in dry biomass is β (g / g), then the amount of CO2 fixed by unit output (kg) of vegetables θ is: θ= α×β×44 / 12 (kg) Then the energy carbon fixation density ζ = θ / § (kg-CO2 / kWh); Carbon utilization rate η1= θ / Input CO2 mass of flue gas × 100%; The system comprehensive cost reduction includes water, electricity, gas, fertilizer, waste heat and other parts, which are defined as follows, and the calculation methods of each part are as follows; ¥ pure-water = Ultra-pure water consumption (m 3 ) × pure water unit price (yuan / m 3 ) ¥ CO2 = CO2 gas consumption (tons) × CO2 unit price (yuan / ton) ¥ 肥 = Fly ash substrate replacement amount (tons) × substrate fertilizer unit price (yuan / ton) The total electricity consumption is Φ (kW·h), of which the photovoltaic system power supply is Φ PV , the plant area peak valley power supply is Φ valley , Φ=Φ PV +Φ valley , then the electricity module cost reduction is: ¥ electricity =Φ×city electricity price- Φ valley × valley electricity price (Note: The photovoltaic system power supply does not generate operation cost, only the initial investment is calculated) There are two calculation methods for waste heat utilization cost reduction, one is the direct method, and the total heat exchange is to estimate the energy saving amount of waste heat utilization.

[0041] The other is an indirect method, the energy consumption of waste heat utilization is directly reflected in the reduction of air conditioning energy consumption, thereby reducing the total power consumption of the system.

[0042] Assuming the total cost of the system is ¥ total , the total cost reduction of the system is φ The calculation formula is: φ = (¥ pure-water + ¥ CO2 + ¥ 肥 + ¥ electricity ) × 100% / ¥ total

[0043] Figure 1 The energy input, processing module, planting area, intelligent control closed loop logic is clearly presented: flue gas CO2 is captured, airflow control, transported to the planting area; electric power (photovoltaic / plant power / peak valley power), waste heat (circulating water tail water) is controlled by the control module, and the planting area is powered and temperature controlled; chemical desalted water management solution is configured, and solid waste is transported to the planting area; intelligent sensors collect data and feedback to the wisdom platform, and the platform outputs instructions to control each module. The embodiment provides a full-link solution for low-carbon transformation of thermal power plants and cost reduction and efficiency improvement of plant factories through system architecture innovation and quantitative evaluation system, and has wide engineering application potential.

[0044] Many embodiments and many applications other than the examples provided will be apparent to those skilled in the art from the foregoing description. The scope of the present teachings should, therefore, be determined not with reference to the above description, but instead with reference to the appended claims, along with their full scope of equivalents. For purposes of completeness, all articles and references including patents and publications, are incorporated herein by reference. The omission of any aspect of the subject matter disclosed herein from any claim is not a disclaimer of such subject matter unless the claim expressly disclaims it, or late-acquired subject matter of which a patent is not yet available acquires prior art characteristics.

[0045] The above is a further detailed description of the present application, which cannot be limited to the specific embodiments of the present application. For ordinary skilled in the art to which the present application belongs, without departing from the concept of the present application, a number of simple deductions or substitutions can be made, which should be regarded as belonging to the present application.

Claims

1. A thermal power plant-plant factory integrated energy utilization system, characterized in that, The system comprises: a flue gas CO2 supply module comprising a flue gas CO2 capture device and a carbon dioxide gas flow control device connected to a soilless cultivation planting area of the plant factory by a pipeline, the pipeline being provided with a flow regulating device, the soilless cultivation planting area being provided with a CO2 concentration monitoring unit, the flow regulating device being in communication connection with the CO2 concentration monitoring unit; a multi-source collaborative energy supply module comprising an electric power supply unit and a waste heat supply unit; the electric power supply unit is connected to a plant area distributed photovoltaic system, and the electric power supply unit is connected to a power plant self-generation system; the plant area distributed photovoltaic system and the power plant self-generation system distribute plant factory lighting and equipment operation power through a power supply control module; the waste heat supply unit is connected to a power plant circulating water tail water system, and recovers waste heat through a temperature monitoring and control system to regulate and control the temperature and humidity of the plant factory; a solid waste resource utilization module comprising a power plant solid waste treatment device, which processes the solid waste of the thermal power plant to provide a cultivation substrate for the soilless cultivation planting area; a water and nutrient supply module comprising a chemical desalted water supply end connected to a nutrient solution configuration and control system to supply nutrient solution to the soilless cultivation planting area; a smart management platform in communication connection with the flue gas CO2 supply module, the multi-source collaborative energy supply module, the solid waste resource utilization module, and the water and nutrient supply module through intelligent sensors and the Internet of Things, which collects real-time operation parameters and coordinates the dynamic matching of electric power, waste heat, CO2, and nutrient solution.

2. The power plant-plant factory integrated energy utilization system according to claim 1, characterized in that, The operation parameters include CO2 concentration, power load, substrate characteristics, and nutrient solution parameters.

3. The plant factory integrated energy utilization system of a thermal power plant according to claim 1, characterized in that, The solid waste of the thermal power plant includes fly ash and slag, and the power plant solid waste treatment device adopts an alkali fusion activated geopolymer solidification collaborative process.

4. The power plant-plant integrated energy utilization system according to claim 1, wherein, The flow regulating device of the flue gas CO2 supply module proportionally adjusts according to the CO2 concentration deviation to maintain the CO2 concentration in the planting area within the range of plant photosynthesis.

5. The plant factory integrated energy utilization system of a thermal power plant according to claim 1, characterized in that, The waste heat supply unit utilizes the heat energy of the circulating water tail water to adjust the temperature and humidity of the plant factory through heat exchange.

6. The power plant-plant integrated energy utilization system according to claim 1, wherein, The nutrient solution configuration and control system monitors water quality and flow online, and the monitoring parameters of the water quality include EC value and pH value.

7. The power plant-plant integrated energy utilization system according to claim 1, wherein The smart management platform monitors the operation state parameters of each module in real time, generates control instructions according to the monitoring data, and the operation state parameters include CO2 concentration, power load, substrate pH value, and nutrient solution EC value. 8.The power plant-plant factory integrated energy utilization system according to claim 1, wherein, The soilless cultivation planting area is provided with a full-cycle LED lighting system, and the power of the full-cycle LED lighting system is provided by the multi-source collaborative energy supply module.

9. The plant factory integrated energy utilization system of a thermal power plant according to claim 1, characterized in that, The composition ratio of the cultivation substrate is adjusted according to the type of plants.

10. A performance evaluation method of a power plant plant factory integrated energy utilization system, characterized in that, The system comprises the following steps: calculating the ratio of total system energy consumption to plant yield in a certain period of time to obtain energy output rate, and evaluating energy utilization efficiency by using the energy output rate; calculating the amount of CO2 fixed per unit of plant yield based on the proportion of plant dry weight to fresh weight and the carbon content in dry biomass to obtain unit yield carbon fixation; calculating the energy carbon density by the ratio of unit yield carbon fixation to energy output rate; calculating the carbon utilization rate by the ratio of unit yield carbon fixation to input flue gas CO2 mass. Calculate the cost saving amount of the dimensions of ultrapure water, CO2, fertilizer, electricity, and waste heat utilization. Calculate the ratio of the sum of the cost saving amount of the dimensions of ultrapure water, CO2, fertilizer, electricity, and waste heat utilization to the total cost of the plant factory without using the plant factory comprehensive energy utilization system of a thermal power plant, to obtain the comprehensive cost reduction of the plant factory using the plant factory comprehensive energy utilization system of a thermal power plant.

Images