Showing results for: coal power plant Articles
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Low-volatile coal combustion technologies in Vietnam: issues and strategies
Vietnam has planned to install a number of coal-fired power plants with unit's capacity of up to 600 MW. Present experience shows that available low volatile anthracite coal is difficult to burn in the PC fired boilers. In this paper, the CFB combustion technology is proposed based on the experiences of coal-fired power plants around the world used similar coal characteristics. Later, a ...
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Technical and economic studies on the optimisation of prospective coal-fired power stations
The paper considers problems of choosing rational parameters of thermal power plants on fossil fuel. A technique for comparison of the energy and economic efficiency of prospective coal-fired power plants is described. The optimisation results of parameters of combined-cycle plants with coal gasification at low and high-temperature levels and steam turbine plants on supercritical steam parameters ...
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A long year in the life of the US coal industry
With concerns about climate change mounting, the era of coal-fired electricity generation in the United States may be coming to a close. In early 2007, a US Department of Energy report listed 151 coal-fired power plants in the planning stages in the United States. But during 2007, 59 proposed plants were either refused licenses by state governments or quietly abandoned. In addition, close to 50 ...
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Closing the door on building new coal-fired power plants in America
Community opposition, legal challenges, and financial uncertainty over future carbon costs are prompting companies to rethink their plans for coal. Since the beginning of 2007, 95 proposed coal-fired power plants have been cancelled or postponed in the United States--59 in 2007, 24 in 2008, and at least 12 in the first three months of 2009. This covers nearly half of the 200 or so U.S. coal-fired ...
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Methylmercury, Fish Consumption, and the Precautionary Principle
This paper considers several broad issues in the context of probabilistic assessment of the benefits of curtailing mercury (Hg) emissions from U.S. coal fired power plants, based on information developed from recent literature and epidemiology studies of health effects of methylmercury. Exposure of the U.S. population is considered on the national scale, in large part because of recent ...
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Project - Oltenia Energy Complex, Romania
High-Pressure Boiler Water Treatment Oltenia Energy Complex is the biggest integrated group of mine and coal-fired power plants in Romania with a total power of 3900 MW spread across 4 power plants, operating mostly with high pressure boilers. 12 power units x 1020 t/h 220 bar 540°C ...
By Fineamin SA
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A new way to measure emissions from China’s Coal-Fired Power Plants
To prevent the most severe impacts of climate change, it is essential to limit fossil fuel use—particularly coal use in power production. The share of coal in global energy consumption is increasing, with most growth occurring in China, the largest coal consumer in the world. In China, coal-fired power plants are responsible for more than 45 percent of total fuel-combustion CO2 emissions. ...
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Coal-fired power on the way out?
The past two years have witnessed the emergence of a powerful movement opposing the construction of new coal-fired power plants in the United States. Initially led by environmental groups, both national and local, it has since been joined by prominent national political leaders and many state governors. The principal reason for opposing coal plants is that they are changing the earth’s climate. ...
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Decommissioning begins at two of largest U.S. coal-fired power plants
Navajo Generating Station, a 2.25-GW coal plant in Arizona, closed in November after 45 years of providing power. Owner Salt River Project (SRP) said it was uneconomical to continue operating. The focus has now shifted to decommissioning, long-term monitoring and ongoing operation of the transmission system. Working with SRP, a number of U.S.-based contractors will conduct demolition and ...
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Improving steam power plant efficiency through exergy analysis: effects of altering excess combustion air and stack-gas temperature
Modifications are examined to increase coal-fired steam power plant efficiency by reducing irreversibilities in the steam generator, including decreasing the fraction of excess combustion air, and/or the stack-gas temperature. Overall-plant energy and exergy efficiencies both increase by 1.4% when the fraction of excess combustion air decreases from 0.4 to 0.15, and by 3.5% when the stack-gas ...
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Majority of China’s proposed coal-fired power plants located in water-stressed regions
To maintain its economic growth and provide for its massive population, China must reconcile two powerful, converging trends: energy demand and resource scarcity. One prime example of this tension is the country’s coal use and water supply. According to a new WRI analysis, more than half of China’s proposed coal-fired power plants are slated to be built in areas of high or extremely ...
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Air Quality Permitting for a New Coal-Fired Power Plant: A Timeline
The high price of natural gas and alternative fuels has made utility companies take a second look at coal as a cheap, plentiful fuel source. For a greenfield plant considering coal, the environmental considerations are significant but not insurmountable. This article discusses the air quality regulations and permitting requirements that must be addressed, from New Source Review to greenhouse gas ...
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An Introduction to the Topic: Controlling Mercury Emissions from Coal-Fired Power Plants
Untitled Document Mercury is a hazardous air pollutant (HAP) that circulates around the globe for a year before depositing back to earth. Mercury emissions from electric power generation sources were estimated by the U.S. Environmental Protection Agency (EPA) to be 48 t/yr, constituting the single largest anthropogenic source of mercury in the United ...
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Permit Compliance Monitoring for the Power Generation Industry
The Clean Air Act Amendments (CAAA) of 1990 authorized EPA to develop regulations requiring facilities to monitor the adequacy of emission control equipment and plant operations. This paper discusses the various methods available for coal-fired power plants and gas turbine installations to demonstrate a reasonable assurance of facility compliance with emission limitations, and ensure that control ...
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Application of artificial neural network to exergy performance analysis of coal fired thermal power plant
This study presents an artificial neural network (ANN) model to predict the exergy efficiency in a thermal power plant. An ANN model based on back–propagation learning algorithm for prediction of exergy efficiency was developed. In the ANN model, the actual data set includes 27 values, of which 18 values were used for training the network and 9 values, were selected randomly to test the ...
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Methylmercury in mosquitoes around a large coal‐fired power plant in Central Ohio
Emissions from coal‐fired power plants are the major anthropogenic source of mercury (Hg) in the environment. Because emitted Hg can be deposited near the source, concerns arise about the effects of coal‐burning facilities on levels of toxic methylmercury (MeHg) in biota near such sources. We investigated the potential impact of a large Hg‐emitting (450 kg in 2005) coal‐fired power station in ...
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King Coal’s Climate Challenge
Coal is emerging as a major topic of conversation at the United Nations climate-change negotiations currently taking place in Warsaw – and rightly so. Indeed, it is a discussion that the world needs to have. The latest findings of the Intergovernmental Panel on Climate Change conclude that we are quickly using up our carbon “budget” – the amount of carbon that we can ...
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Legal Lookout: Mercury Rising
Mercury is a potent toxin that accumulates in the food chain. Emissions come from both natural and human-generated sources. The mercury content in coal, which is released when the fossil fuel is burned, contributes the single largest percentage source of humangenerated mercury emissions in the United States. According to EPA, total global emissions from all sources, both human-generated and ...
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530-Megawatt Supercritical Pulverized Coal-Fired Power Plant
Using the most advanced clean coal technology, B&V Energy designs a supercritical pulverized coal-fired unit to be one of the country's cleanest producers of affordable electricity. Wisconsin Public Service Corporation (WPSC) is a regulated electric and natural gas utility serving more than 700,000 customers within Wisconsin and Michigan. Dairyland Power Cooperative (Dairyland) provides the ...
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Coal fired power plant achieves ZLD for FGD wastewater
The Facility Illinois’ City of Springfield’s Dallman Power Station’s three coal-fired units and soon to be installed fourth unit, are equipped with flue gas desulfurization (FGD) systems (scrubbers) to control sulfur dioxide (SO2) emissions. The Problem A sharp increase in boron concentration in the FGD wastewater required that The City of Springfield Office of Public ...
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