Development Of Coal-fired Power Plants Research Articles

Dynamic modeling and comprehensive analysis of an ultra-supercritical coal-fired power plant integrated with post-combustion carbon capture system and molten salt heat storage

Reducing carbon footprints and enhancing operational flexibility are crucial for the future development of coal-fired power plants (CFPPs). This necessitates the deployment of post-combustion carbon capture (PCC) and molten-salt heat storage (MSHS) systems. Given the various integration schemes and complex interactions, understanding the comprehensive performance of the integrated CFPP-PCC-MSHS system is important. This paper proposes an integration scheme for 1000MWe ultra-supercritical CFPP, solvent-based PCC and MSHS, achieving cascade energy utilization. A dynamic simulation model for the CFPP-PCC-MSHS system is developed to understand the dynamic couplings between subsystems. Comprehensive performance analyses are conducted to evaluate the thermodynamics, flexibility and safety of the integrated system under various operating conditions. Simulation results indicate that deploying MSHS reduces the thermal and exergy efficiencies of the CFPP-PCC system by 0.18 % and 0.19 %, respectively, but effectively expands the adjustable power load range by 6.08 % under the fixed 90 % CO2 capture rate mode. Meanwhile, the integration of MSHS offers alternative pathways to improve the power ramping rate to 13.33 MW/min. The heat charging/discharging process of MSHS induces fluctuations in temperature and pressure within the turbine, potentially affecting plant operating safety. This paper provides useful insights for the design, retrofit and operation of new generation of CFPPs.

Coal blending optimization in thermal power plants based on multi-strategy fusion multi-objective particle swarm optimization

ABSTRACT Rising coal price and increasingly stringent emission policy highlight the importance of balancing economic benefit and sustainable development of coal-fired power plants. In order to make the power plant operate economically and safely, and reduce the emission of pollutants as much as possible, this paper proposed a coal blending optimization framework for coal-fired power plants. This framework constructs a set of mathematical model based on the minimization objective function, including the economy, safety and environmental protection of coal. And a multi-strategy fusion multi-objective particle swarm optimization (MSF-MOPSO) method is proposed to optimize the coal blending model. The feasibility, effectiveness and superiority of the method are theoretically verified by convergence analysis and several sets of simulation experiments. And the practical application of this framework shows that under the coal blending strategy based on different weight combinations, the algorithm proposed in this paper can produce high-quality Pareto spatial distribution. Comparing with other state-of-the-art coal blending algorithms, this method can reduce the coal purchase cost by 4.42% and emission by 5.11% at least under the same condition. It has significant environmental protection and economic benefit.

Hybrid dynamic coal blending method to address multiple environmental objectives under a carbon emissions allocation mechanism

The rise in global carbon emissions has led to serious ecological problems and highlighted the need to better pursue the sustainable development of coal-fired power plants. To reduce environmental pollution, this paper proposes a hybrid dynamic coal blending method under an uncertain environment to achieve a trade-off between economic development and environmental protection. This method fully considers seasonal pollutant variations, a dynamic carbon emissions quota allocation mechanism. A practical case from the Jintang coal-fired powered plant is given to verify the efficiency and practicality of the proposed optimization method. The model allows decision-makers to promote cleaner production by developing coal blending schemes to suit relevant national and local carbon and inhalable particulate matter emissions reduction policies. The results of the sensitivity analysis also confirm this view and show that the model is stable and has emission reduction limits. Specifically, compared with the maximum emissions, the model can reduce carbon emissions by about 29.1% (2.625 × 106 tonnes) and inhalable particulate matter emissions by 29.7% (0.64 × 106 tonnes). The results demonstrated that the hybrid dynamic coal blending method was able to achieve carbon emissions and inhalable particulate matter emissions reductions and that appropriate environmental constraints can improve emissions performance and encourage sustainable CPP development.

China’s withdrawal from overseas coal in context

China has played a significant role in enabling overseas coal-fired power plant development through provision of capital and construction services. Following Xi Jinping’s announcement in September 2021 that China would no longer build new coal-fired power projects abroad, the potential scope of affected capacity remains unclear. This perspective article estimates the range of potentially affected coal plants, showing that construction services without accompanying Chinese finance support more overseas coal-fired generating capacity than financial arrangements. Furthermore, this article discusses four important areas for energy transition policy focus: the outsized role of the non-Chinese private sector in supporting recent coal power development, China’s domestic coal pipeline, the need for early retirement of new coal plants, and mechanisms for a transition of foregone coal support to renewable energy.

Coal development and its discontents: Modes, strategies, and tactics of a localized, yet networked, anti-coal mobilisation in central Philippines

Developing countries need sufficient, reliable, and affordable energy for economic development; yet, the source of this energy remains contested. In the Philippines, coal-based electricity supplies most of the country's energy requirement. Until the moratorium on new coal-fired power plant development in 2020, the Philippine government aggressively pursued the development of the coal sector, labelling coal projects as nationally significant. With this policy direction, many local governments, including provinces and cities, rallied around coal. Dissent against this fuel, nonetheless, was also prominent, with civil society often leading these mobilizations. This paper discusses one of these movements: a civil society-business-and-ecclesial-led dissent on the proposed coal-based energy system for Bohol province. Using primary data from interviews, supplemented by social media and secondary data analysis, this paper describes the modes, strategies, and tactics of this local coal dissent. Led by a trifecta of actors, including private citizens, businesspeople, and the clergy, the movement employed nonviolent approaches through network-building, letter-writing, and social media-campaigning. As a result of this movement, the provincial government banned future coal-based development in Bohol.

Analysis of the Groundwater Resource Pollution of Coal-Fired Power Plants and Its Impact on Geotechnical Engineering Properties by Numerical Simulation Technology

Objective: The objective is to investigate the impact of groundwater resource pollution of coal-fired power plants and its impact on the properties of geotechnical engineering based on numerical simulation technology, thereby proving the effectiveness and superiority of numerical simulation technology in preventing groundwater resource pollution and forecasting the related information, which would provide direction and guidance for the treatment and management of groundwater resource pollution. Method: First, the regions to be investigated are divided and generalized. Then, relevant experiments are carried out for the calculations of hydrogeological parameters to establish the hydrogeological conceptual model. Next, the real-time water level data recorded by the observations are used to identify and verify the model effectively. Afterward, the numerical simulation of groundwater solute transportation is carried out again. During the process, the establishment of the groundwater quality model is the focus, followed by the application of numerical simulation technology to forecast the environmental impacts of groundwater pollution, including the forecasting of groundwater environmental pollutions caused by Chemical Oxygen Demand (COD) leakage, ash yard, and power plants. Results: Through the application of numerical simulation technology, the current information about groundwater pollution, such as the scope of impact and the movement law of pollution, can be understood clearly and timely. Conclusion: By applying the numerical simulation technology in forecasting groundwater pollution, the groundwater pollution problems can be prevented effectively, which offers great help to the correct and reasonable operation and development of coal-fired power plants, which provides a significant reference for the preventive treatment of groundwater pollution.

Prospects for the use of coal of the Republic of Sakha (Yakutia) for energy needs

The Republic has significant resources for the development of mining, export and domestic consumption, including the energy needs of the republic and neighboring regions. The article provides a retrospective analysis of the supply of Yakut coal for energy needs and the structure of capacities by energy resources. The estimation of power-generating coal resources, including low-grade products of coking coal processing of the Republic of Sakha (Yakutia), is given. Characteristics of coal deposits are presented, which are useful for energy needs. Projects for the development of coal-fired energy in the Republic of Sakha (Yakutia) are presented. The Republic of Sakha (Yakutia) has significant coal resources for the development of coal-fired power plants. Coal power facilities play a closing role in meeting the demand for electricity and heat. The use of coal for the development of coal-fired energy in the Republic of Sakha (Yakutia) can be determined by the development of mining industry, the construction of power plants of small capacity in isolated areas, as well as the possibility of exporting coal-fired power plants.

Economic Challenges for Coal-Fired Power Plants in Russia and Around the World

The present article considers the changing role of coal-fired power plants in the world’s largest national energy systems in the context of rapid development of the competitive environment and active transition to a low-carbon energy system. It also discusses approaches to technological adaptation to new economic and ecological challenges. Special attention is devoted to the characteristics of the developmental conditions of coal-fired thermal power plants in the Unified Power System of Russia in light of amplified inter-fuel competition with gas-fired and nuclear power plants. The problem of creating incentives for the development of coal-fired power plants as a constituent element in the effort to satisfy the requirements of energy security of Russia and its individual regions is discussed.

Carbon dioxide emission factor estimation from Indonesian coal

Climate change will become the priority for the air quality management. It focuses more on carbon dioxide emission. Indonesia which has power generation dominated by coal combustion is expected to develop the national CO 2 emission factor. Due to the high variation in Indonesia coal rank and its growing magnitude in CO 2 emission caused by the future coal-fired power plant development, the characteristic emission value becomes an important concern. The method used in this study is developed from the IPCC Guidelines for Energy. The conversion unit plays an important role in the calculation method. The result shows that the higher in C content, the lower in its CO 2 emission factor. It means that coal classified as high C content or high heating value will produce low carbon dioxide emission factor. The average CO 2 emission factor obtained in Indonesian coal is 99,718 kg CO 2 /TJ with an average value of carbon content 27.2 kg C/GJ, and NCV equal to 19.8 TJ/Gg. Coal rank is categorized as lignite to subbituminous or bituminous.

Ecological compensation system and manage countermeasures for coal-fired power plants in China

ABSTRACTThe coal-fired power plants (CFPPs) will become the dominant utilization type of coal in China in the future. The construction and development of CFPPs not only assure the security and sustainability of Chinese energy industry, but also play an important role for practice ecological civilization. However, they also could cause many ecological environment problems, such as destruction of land resources, vegetation deterioration, atmospheric and aquatic pollutions, geological disasters, health of residents etc. So, it is very important for the implementation of ecological compensation at the same time of construction and development of CFPPs. The system framework of ecological compensation was built in this study, based on case of Xilingol CFPPs, Inner Mongolia, China. The definition and connotation of the subject of ecological compensation, relationship of stakeholders and standard of compensation were explained for carrying out ecological compensation of CFPPs smoothly. The existing problems and mange countermeasures for ecological compensation of Xilingol CFPPs were discussed to validating and optimizing the system.

Outlook of coal-fired power plant development and the regional ecosystem and environmental protection in China

ABSTRACTEnergy plays significant role in the protection of national prosperity and economic development. The development and construction of coal-fired power plants (CFPPs) were regarded as an important component of the national energy planning, ecological civilization, national energy security, urban and regional sustainable development, and even atmospheric action. The construction of CFPPs is served as an important contribution to optimizing national energy structure and development. However, CFPPs are mainly located in arid or semi-arid or desert regions in China. The vegetation recovery in these regions is rather difficult than other regions once these ecosystems are disturbed or degraded, so these fragile areas face the more severe risks of ecological environment. These regions also serve as important grain-producing bases in Northern China and as important ecological function areas to nearby major cities, such as, Beijing and Tianjin. Furthermore, the development activities of CFPPs may lead to numerous environmental issues, such as water pollution, soil erosion vegetation degradation, and air pollution. The relationships between environmental issues and CFPP development should thus be regulated from a regional or national perspective. In this study, we analyse the spatial characters of coal resources, discuss the ecological conservation goals and ecological conditions of CFPPs, propose solutions to environmental issues involving ecological protection and CFPP construction, and provide important sustainable development strategies.

Sustainability efficiency of Chinese cities involving coal-fired power plants with data envelopment analysis

ABSTRACTCoal currently accounts for nearly 70% of the energy consumption in China, and is expected to remain a vital energy source in the near future. Planning and construction of national large-scale coal-fired power plants (CFPPs) is an important aspect of China’s 12th coal industry five-year plan and the development strategy for future energy. CFPPs have large electricity generation potential and are important for maintaining energy security and structure. However, the construction and development of CFPPs leads to local ecological and environmental problems. The sustainable development of CFPPs is becoming increasingly important. The assessment of CFPP sustainable development would highlight the main problems in CFPP planning, construction, operation, and management, avoiding the adverse effects on local society, economy, ecosystems, and environment. This study demonstrated a sustainable development assessment framework for CFPPs and their regions, which concerned natural resources and environmental pollutants as the inputs and human well-being as the socio-economic output. Sustainable development would mandate lower inputs and higher well-being outputs. Using data envelopment analysis, the sustainable development efficiency of cities in CFPP regions was assessed. The results showed increases in urban sustainability efficiency for cities involving CFPPs from 1990 to 2010. Heavy water pollution and excess energy consumption were the main problems identified for urban and CFPP sustainable development. The findings of this study can be used as a reference for urban and CFPP sustainable development and provide guidance for future CFPP construction and development.

An integrated CO2 tax and subsidy policy for low carbon electricity in Guangdong, China

ABSTRACTIn order to tackle climate change, Guangdong has been chosen as an experimental province for low carbon transition by the Chinese government. To analyze the low carbon transition of the electricity sector in Guangdong, a techno-economic model is developed. By applying the model, the policies of CO2 tax and subsidy are analyzed first. Based on the analysis, an optimal integrated CO2 tax and subsidy policy is designed to exert positive pole and limit negative effects of a simple CO2 tax or subsidy policy. As a result, the development of renewable power can be incentivized efficiently and the development of coal-fired power plants can be inhibited. The CO2 emission per unit electricity supply can be reduced about 25.1% by 2020 compared with that in 2007.The cost of unit electricity supply will increase about 15.1%, which is close to that in a no-policy scenario and similar to the historical level.

Investment under uncertain climate policy: A practitioners׳ perspective on carbon risk

This paper introduces the concept of payment probability as an important component of carbon risk (the financial risk associated with CO2 emissions under uncertain climate policy). In modeling power plant investment decisions, most existing literature uses the expected carbon price (e.g., the price of traded permits or carbon tax) as a proxy for carbon risk. In contrast, this paper identifies expected carbon payment as a more accurate measure of carbon risk as perceived by industry practitioners. This measure of carbon risk incorporates both expected price and the probability that this price would actually be faced in the case of a particular investment. This concept helps explain both the surge of activity in 2005–2006 and the subsequent decline in interest in coal-fired power plant development in the U.S. The data for this case study comes from an extensive online survey of 700 U.S. energy professionals completed in 2006, as well as interviews conducted with industry representatives from 2007 to 2009. By analyzing industry views on policy uncertainty and future carbon legislation, we gain a better understanding of investor attitudes toward carbon risk. This understanding will help policy makers design better incentives for investing in low-carbon technologies.

Regulatory Uncertainty and Coal-Fired Power Plant Development

Regulatory Uncertainty and Coal-Fired Power Plant Development

The Logic of Carbon Risk from the Investor's Perspective: The Expected Carbon Payment

This paper uses survey data to create a model of carbon risk (the financial risk associated with CO2 emissions under uncertain climate change policy). The usual way to incorporate the notion of carbon risk into investment decision making is to include a cost of carbon in the budget analysis. Most existing literature uses the expected price of carbon as a proxy for this cost, often represented by the price of traded permits, in its modeling of power plant investment decisions. In contrast, this paper introduces the idea of expected payment of carbon as a more accurate measure of carbon cost as perceived by industry practitioners. This measure of carbon risk incorporates both price and the probability that this price would actually be faced in the case of a particular investment. This concept helps explain both the surge of activity in 2005-2006 and the subsequent decline in interest in coal-fired power plant development in the U.S. The data for this case study comes from an extensive online survey of 700 U.S. energy professionals completed in 2006, as well as interviews conducted with industry representatives from 2007-9. By analyzing industry views on policy uncertainty and future carbon legislation, we gain a better understanding of investor attitudes toward carbon risk. This understanding will be important for future policy debates.

A View of Coal Fired Power Plant Development Plan of Indonesia

A View of Coal Fired Power Plant Development Plan of Indonesia