Recently, two thermal power plants that have long been out of production have held a ceremony for the full resumption of production in the plant area of Huaneng Liancheng Power Generation Company.
Since the resumption of production, the cumulative power generation has exceeded 244.6 billion kWh, effectively alleviating the power gap in individual periods in the province and improving the space for new energy consumption.
How to reduce carbon emissions after the restart of thermal power plants, what are the paths, are there any cases to refer to, and how should thermal power companies carry out carbon management?
This article will sort out the development status of the thermal power industry, the carbon reduction path of enterprises, the carbon management strategies of enterprises, and the carbon reduction cases of enterprises.
The article also shares two sets of expert PPTs to help you have a deeper understanding of the pollution and carbon reduction path, key technologies, and future development of China's thermal power industry
Table of Contents
01 Thermal power carbon reduction expert PPT
02 Development status of thermal power industry
03 Carbon reduction pathways for thermal power enterprises
04 Carbon management strategy of thermal power enterprises
05 Carbon reduction cases of thermal power enterprises
Thermal power carbon reduction expert ppt
1. China's thermal power industry and its outlook for pollution reduction and carbon reduction under the dual carbon goals. ppt
The PPT comes from the National Energy Group, with a total of 65 pages, and provides a detailed analysis of the thermal power industry's dual carbon goals, industry outlook, and carbon reduction outlook. The main contents are as follows:
Thermal power at the peak of carbon emissions 14500 million kW, including 12 million coal-fired power500 million kw, stable coal consumption;At the time of carbon neutrality, 800 million kW of thermal power, including 5 coal power300 million kw, 3000h utilization hour;Energy conservation is the main path to carbon peak and carbon neutrality, with great potentialBlending is an important way to reduce carbon emissions in the thermal power industry.
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2. Synergy in pollution reduction and carbon reduction in China's thermal power industry. ppt
PPT from Wang Pu, Chinese Academy of Sciences, the main content is as follows:
Different thermal power stations have different carbon emissions considering health co-benefits, and based on this, the power sector can reasonably prioritize the implementation of pollution reduction and carbon reduction strategiesThe distribution of health co-benefits at the provincial level is different, and the formulation of differentiated carbon prices based on this can better play the guiding role of market mechanisms in coal reduction and energy transition.
There are differences in the value of co-benefits based on technology application in different provinces, and different key measures need to be takenThe co-benefits of various pollutants have different impacts at different distances, and the results of this data can help the power sector formulate fair and reasonable policies to reduce pollution and carbon emissions.
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The development status of the thermal power industry
1. What is the signal for the full resumption of production of thermal power plants that have been shut down for 6 years?
Recently, two thermal power plants that have long been out of production have held a ceremony for the full resumption of production with Huaneng Gangu Power Generation Company in the plant area of Huaneng Liancheng Power Generation Company.
This is not the first time that coal power plants have been restarted, especially in European countries such as Germany, France, Britain, Finland and Denmark, which claim to be "pioneers in coal retirement".
The installed capacity of new energy is insufficient, while the demand for electricity remains high, and under the huge energy crisis, the era of coal power is "restarting"!
Combined with the current policy requirements of various countries for coal power, the "restart" coal power era mainly shows three characteristics: significant growth in demand, reduced energy consumption year by year, and higher utilization rate.
2. The development status of China's thermal power industry
According to the statistics of the National Energy Administration, in recent years, China's installed thermal power generation capacity has maintained a steady growth trend year by year.
In 2016, the installed capacity of thermal power generation in China was 105.4 billion kilowatts, and by 2021, the installed capacity of thermal power generation in the country has increased to 129.7 billion kilowatts, an increase of nearly 24.3 billion kilowatts. From January to October 2022, China's installed thermal power generation capacity was 131.6 billion kilowatts, a year-on-year increase of 25%。
From January to September 2023, China's installed thermal power capacity is 137.2 billion kilowatts, a year-on-year increase of 43%。The newly installed capacity of thermal power was 39.44 million kilowatts, an increase of 15.85 million kilowatts year-on-year.
The upstream of thermal power generation is mainly coal, oil, natural gas and other power generation raw material industries and power generation equipment industry, and the midstream is thermal power generation industry, with key enterprises including Huaneng International, Shanghai Electric Power, Huadian International, Jinshan Co., Ltd., Tianfu Energy, Jingneng Power, Shenergy Co., Ltd., Dalian Thermal Power, Huadian Energy, Huayin Electric Power, Tongbao Energy, Guodian Power, Inner Mongolia Huadian, SDIC Power, Ningbo Energy, Datang Power Generation, etc. The downstream industries are mainly power grid companies, consumers and other circulation and application links.
Carbon reduction pathways for thermal power enterprises
1. Clarify the development orientation of the enterprise
(1) Determine the optimal proportion of thermal power units. The integration of a high proportion of renewable electricity into the grid will directly cause the moment of inertia of the system to decrease, which seriously threatens the operation stability of the system. Considering the economic dispatch and system safety, under the premise of satisfying the power supply, it is necessary to ensure a certain proportion of thermal power units.
(2) Determine the optimal proportion of standby thermal power units. The grid-connected access of a high proportion of renewable electricity will cause the total power generation capacity in the system to be uncontrollable, and even disconnect from the grid due to large fluctuations in the output of wind and solar power generation. Therefore, it is necessary to reasonably set the reserve capacity of the system according to the output characteristics of wind and solar power generation and the maximum load situation to ensure the safe and stable operation of the power grid. The optimal proportion of system reserved standby also needs to be scientifically predicted in combination with economy and safety.
(3) Continue to further promote the flexibility transformation of thermal power units. At present, the improvement of grid flexibility mainly comes from the flexibility of single-cycle peak shaving gas power, pumped storage power stations, cogeneration units and conventional coal power generation. The grid-connected access of a high proportion of renewable electricity requires the power system to have the technology and resources to provide real-time response, and the flexible transformation of thermal power (especially coal-fired power) units needs to meet the basic requirements of power system flexibility.
(4) Strengthen the application research of virtual-** technology in the direction of peak regulation and frequency regulation. At present, the virtual technology used in the direction of peak regulation and frequency modulation of power grid mainly includes virtual synchronous machine (VSG) and VPP.
By adding a control algorithm that simulates the operation mechanism and external characteristics of the synchronous generator to the controller in the grid-connected inverter of wind and solar power generation, VSG adjusts the wind and solar output in an automatic way to replace the real thermal power units to participate in frequency modulation, which can increase the balance ability and frequency stability of the system.(5) Strengthen the application research of energy storage-thermal power combined frequency modulation and peak regulation. At present, China's frequency modulation power supply is mainly thermal power units, which lag in response to automatic generation control (AGC) instructions and cannot meet the requirements of power grid dispatching, and this problem can be solved to a certain extent through the joint frequency modulation of energy storage and thermal power units.VPP aggregates, optimizes the control and management of the clean power supply, controllable load and energy storage systems scattered in the power grid through the distributed power management system, and provides auxiliary services such as frequency regulation and peak regulation for the power grid, which is one of the important technologies to realize the smart grid.
2. Renewable energy consumption
(1) Centralized wind and solar power generation. Restricted by factors such as resource endowment and load characteristics, there is still an imbalance in the consumption structure of centralized wind and solar power generation in China and an uncoordinated development of source and grid, which requires the use of UHV power grid as the backbone grid to improve the energy allocation capacity through long-range transmission. The key to realizing the long-range transmission of wind and solar power generation lies in the interconnection and interconnection capacity of the power grid in the region, that is, the difference between the load curve and the minimum output curve of conventional units.
(2) Distributed wind and solar power generation. At present, the technologies and means that have attracted more attention include: direct nearby consumption, energy storage + microgrid, wind and solar power generation + green hydrogen, energy blockchain, integrated energy services, etc.
3. Energy saving
Energy conservation and consumption reduction work directly affects the profits of thermal power enterprises, and is also an important part of achieving the "double carbon" goal. The improvement of this work can be considered from the following aspects.
Thermal system. Considering the optimization of the operation mode of the system, improving the energy conversion rate, and paying attention to the relationship between the thermal energy grade and the fuel chemical energy grade, so as to promote the full utilization of energy.4. Cost controlIn view of the complexity of cost composition, intelligent optimization algorithms can be considered to comprehensively evaluate and optimize the operation economy of thermal power enterprises, so as to provide basis and support for enterprise cost management decisions.Environmental protection system. The energy saving of the environmental protection system of thermal power enterprises mainly involves combustion technologies related to denitrification, coal powder cleaning, and coal-water slurry cleaning.
Combined heat and power with waste heat**. For cogeneration units, the key is to achieve unified central heating and improve the rate of waste heat, and the measures that can be taken include: focusing on promoting the application of new materials for heat storage and insulation, strengthening the energy-saving transformation of existing facilities, and making full use of low-quality heat sources to improve the operating efficiency of the unit.
Combined with the results of intelligent optimization analysis and the operation and control process of thermal power enterprises, a cost management system is constructed to dynamically and systematically manage the production and operation processes related to cost control. On this basis, innovate the management model, improve the management efficiency, and realize the improvement and improvement of the cost management decision-making level of the enterprise.
5. Digital transformation
In order to meet the objective needs of the new round of scientific and technological revolution and industrial transformation, and accelerate the continuous transformation of new and old kinetic energy of the real economy, thermal power enterprises should actively integrate into the wave of industrial digital transformation.
Carbon management strategies for thermal power enterprises
1. Strengthen the quality management of carbon emission data
(1) Implement management responsibilities。Thermal power enterprises bear the main responsibility for the quality management of carbon emission data, and are responsible for the preparation and implementation of data quality control plans, and the maintenance of equipment such as monitoring, statistics, accounting, analysis and cross-checking, as well as laboratory measurement, to ensure that all data reflect the true situation of production emissions of enterprises。
(2) Improve the construction of mechanisms. Establish a leadership and coordination mechanism, improve the system, establish a leading group and working group for carbon emission work for thermal power enterprises, clarify the leading departments, responsible departments and management positions, implement policies, regulations, rules, standards and group company management systems such as national, industry, local, registration and trading institutions, improve the work system, clarify the work process, and ensure that all carbon emission work is implemented.
(3) Innovative management technology. Establish a carbon emission monitoring and statistical reporting system that meets the requirements of "dual control" of total carbon emissions and intensity, and establish an indicator system, a reporting system and a working system.
2. Take multiple measures to control emissions and reduce emissions
(1) Vigorously promote the concept of green and low-carbon, and advocate the practice of conservation, low-carbon production and lifestyle. Establish a "dual control" system and indicator system for total carbon emissions and intensity, increase assessment efforts, and promote the implementation of emission control and emission reduction targets.
(2) Optimize operation and carry out power transfer, so that units with low emission intensity can occur more often and reduce carbon emissions.
(3) Technological transformation to save energy and reduce consumption. The benefits of carbon assets for transformation and carbon reduction will be included in the benefit calculation of project feasibility studies, and the "three reforms" of coal-fired power units will be actively promoted, and the elimination of high-energy-consuming mechanical and electrical equipment will be accelerated.
(4) Blending sludge, biomass, ammonia and other non-fossil fuels. Replace fossil fuels by blending biomass, sludge and other fuels;Research on ammonia combustion in coal-fired boilers, apply zero-carbon fuels, and reduce the carbon emissions and emission intensity of thermal power units.
(5) Strengthen research on CCUS carbon reduction technologies. Integrate CCUS R&D strength, research and development of CCUS technology and devices, and promote large-scale carbon dioxide capture and storage, utilization technology research and development, demonstration and industrial application by accelerating scientific and technological innovation.
3. Improve the level of carbon asset management
(1) Improve the system and standardize management. In accordance with the national "dual carbon" policy and the national carbon market laws and regulations, combined with the actual situation of enterprises, improve the carbon emission carbon trading management system, strengthen responsibility, strengthen supervision and inspection and assessment accountability, and include carbon emission management indicators in the target responsibility system assessment.
(2) Continue to strengthen capacity building. Persist in carrying out capacity training, focusing on publicizing the national "dual carbon" policy, interpreting the guidelines for greenhouse gas emission accounting and reporting of power generation enterprises, and explaining the trading rules and work processes of the national carbon market.
(3) Comprehensively consolidate the management foundation. Coal mining and production is a crucial task in carbon emission accounting for coal-fired power enterprises, and the quality of its work is related to the accuracy of carbon emission accounting.
A case study of carbon reduction by a thermal power company
Shanxi Datang International Linfen Thermal Power Co., Ltd. is located in Yaodu District, Linfen City, Shanxi Province, located in the Fenwei Plain, which is rich in coal resources, and many coking plants and coal washing plants are built here, but its basin landform is not conducive to the diffusion of pollutants, and the environmental pollution is more serious.
Under the strategic goal of "dual carbon", Shanxi Datang International Linfen Thermal Power Co., Ltd. has actively carried out the practice of pollution reduction and carbon reduction on the basis of deepening the prevention and control of air pollution, mainly from the following seven aspects, and has achieved remarkable results:
1. Ultra-low emission transformation
In 2015 and 2016, two 300,000 subcritical units were renovated to achieve an annual reduction of 1,095 tons of sulfur dioxide emissions, 507 tons of nitrogen oxide emissions, and 228 dust emissions5 tons.
2. High back pressure transformation
In 2017, the company carried out a high back pressure transformation of Unit 1, which increased the heating capacity of the unit by 120 megawatts, which can be connected to 16.5 million square meters of heating area and save 2 standard coal per year420,000 tons, reducing carbon dioxide emissions by 6 per year20,000 tons, 74 tons of sulfur dioxide emissions, 35 tons of nitrogen oxide emissions, and 5 soot emissions8 tons, including ash emissions reduced by 160,000 tons.
3. Unit heating capacity increase transformation
In 2019, the company mainly used the low-pressure cylinder cutting method to transform the heating capacity of Unit 2, and the effect of energy saving and emission reduction was more significant. Through the transformation, the peak regulation capacity of the unit is significantly increased under the condition that the heat supply remains unchanged. According to estimates, the annual heat supply can be increased by about 750,000 GW, the heating capacity of the power plant can be increased by 110 megawatts, and the new heating capacity can reduce the standard coal by more than 9,000 tons per year compared with the units of heat and power production. In the heating season, the standard coal consumption of power generation is reduced by about 10 grams per kilowatt hour, and the annual sulfur dioxide emissions are reduced by 543 tons, nitrogen oxide emissions reduced by 543 tons, soot emissions reduced by 126 tons.
4. The level of comprehensive utilization of solid waste has been improved
After coordination with the local government, the company obtained the right to land development projects, carried out land reclamation work, formed a plain, and produced an area of 5 cultivated land2 hectares, which can be used for afforestation, agriculture, and ecological environment improvement, but also greatly reduce the pressure of ash storage, which is conducive to ensuring the safe operation of the unit. At the same time, the company is also actively exploring the market, striving to increase the comprehensive utilization rate of solid waste and reduce the amount of solid waste disposal, and the comprehensive utilization rate of solid waste has reached more than 60% in 2022.
5. Construction of renewable energy projects
The company actively uses local resources to develop photovoltaic, wind power and other projects, and has invested 100 megawatts of photovoltaic power stations in Xiangning County so far, and is expected to basically achieve full capacity grid connection by the end of JuneThe 90 MW wind power project in Ji County has been approved and is carrying out preliminary work.
6. Carbon market capacity building
The company actively uses local resources to develop photovoltaic, wind power and other projects, and has invested 100 megawatts of photovoltaic power stations in Xiangning County so far, and is expected to basically achieve full capacity grid connection by the end of JuneThe 90 MW wind power project in Ji County has been approved and is carrying out preliminary work.
As a key area of synergy in pollution reduction and carbon reduction, the thermal power industry has achieved significant improvements in energy efficiency and a significant reduction in pollutant emissions in recent years through measures such as the elimination of outdated units, the transformation of ultra-low emissions, and the construction of large-scale and high-efficiency thermal power units.
However, the exploration potential of the 14th Five-Year Plan and traditional policies in the medium and long term is limited, and the thermal power industry is facing the dual pressure of ensuring safe supply and reducing pollution and carbon emissions.