CFB Refurbishment Opportunities in Russia

2005 ◽  
Author(s):  
P. Grammelis ◽  
N. Koukouzas ◽  
G. Skodras ◽  
E. Kakaras ◽  
A. Tumanovski
Keyword(s):  
Power Plant ◽  
Power Plants ◽  
Current Status ◽  
Fluidised Bed ◽  
Fluidized Bed Combustion ◽  
Power Sector ◽  
Power Plant Equipment ◽  
Milled Peat ◽  
Plant Equipment ◽  
Low Efficiency

The paper aims to present the current status of the coal-fired power sector in Russia, the prospects for renovation activities based on the fluidised bed technology and the existing experience on CFB refurbishment projects. The renovation needs of the power sector, among the retrofitting, repowering and reconstruction options, were estimated through a multi-criteria analysis. The most attractive system to renovate a power plant between the Supercritical Combustion (SC) and the Fluidized Bed Combustion (FBC) technology was evaluated. Furthermore, the boiler replacement with a CFB unit in the Shatura power plant was studied and its replication potential in the Russian coal-fired power plant park was examined. Nowadays, the installed capacity of coal-fired power plants in the Russian Federation is 29.3 GWe, while they account for about 19% of the total electricity generation in the area. The low efficiency and especially the advanced age are the determinant factors for renovation applications at the Russian units. Even in the more conservative modernisation scenario, over 30% of the thermoelectric units have to be repowered or reconstructed. CFB is the most promising technology for such modernisation projects, when the renovation potential is high. The main characteristics including high volatile yield, low ash content and a large share of light fractions in the as-fired milled peat were taken into account during the CFB boiler calculations in the Shatura power plant. Upgrading the existing coal-fired power plant equipment with CFB technology, which is known to be environmental friendly and efficient, will open new perspectives to the operating power plants in Russia.

Paper 11: Feed Pumps for Modern Steam Boiler Applications, Design, Development, and Operation

1969 ◽  
Vol 184 (14) ◽  
pp. 108-148
Author(s):  
P. S. Neporozhnii ◽  
A. K. Kirsh
Keyword(s):  
Power Plant ◽  
Power Plants ◽  
Operating Conditions ◽  
Steam Boiler ◽  
Design Development ◽  
Feed Pump ◽  
Design Features ◽  
Power Plant Equipment ◽  
Plant Equipment

This paper describes the operating conditions which form the basis for determining the various types of feed pump units needed to equip the main power plant equipment in the U.S.S.R. The principles upon which the feed pump groups are selected, according to the type of equipment installed in different power plants, are considered. The system diagrams and design features of the feed pumps are presented, together with descriptions of how they are driven.

scholarly journals Benthic and periphytic invertebrate contour groups in techno-ecosystems of power plants of Ukraine

2021 ◽  
Author(s):  
A. Protasov ◽  
◽  
A. Sylaieva ◽  
T. Novoselova ◽  
I. Morozovskaya ◽  
...  
Keyword(s):  
Power Plant ◽  
Nuclear Power ◽  
Power Plants ◽  
Nuclear Power Plants ◽  
Functional Organization ◽  
Research Experience ◽  
Power Plant Equipment ◽  
Long Time ◽  
Plant Equipment ◽  
Practical Recommendations

Based on many years of research experience of water techno-ecosystems of thermal and nuclear power plants a brief review of the main patterns of formation of the composition, cenotic structure, elements of the functional organization of benthos and periphyton communities was made. It was shown that the composition of zoobenthos and zooperiphyton in some cooling ponds, other technical water bodies and watercourses was quite rich. In addition, due to the rather intensive invasive process, the list of taxa is constantly expanding. Species of tropical and subtropical origin have been recorded. Of particular importance is the invasion of species that may be the cause of bio-hindrances in the operation of power plant equipment. Techno-ecosystems have been studied to varying degrees. One of the most studied for a long time are the cooling ponds of Khmelnitsky and Chernobyl nuclear power plants. Hydrobiological research and monitoring at the first one has been carried out for more than 20 years. It was found that the influence of biotic invasion (invasion of Dreissenidae) may have a significant impact, comparable to extreme technogenic factors, on both the ecosystem and technical water supply facilities. The stages of contourisation and decontourisation processes in the Khmelnitsky NPP techno-ecosystem were established. At the Chernobyl NPP cooling pond, studies were carried out during all periods of the existence of the reservoir and the power plant, until the process of uncontrolled pond descent and transforming it into a unique wetland. Based on the obtained data, practical recommendations relating to the organization of hydrobiological and environmental monitoring, as well as reducing biological hindrances and improving the reliability of power plant equipment have been developed.

Nuclear Power Plant Thermal Performance Improvement

2008 ◽  
Author(s):  
Greg C. Alder ◽  
Frank J. Todd
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Performance Improvement ◽  
Thermal Performance ◽  
Nuclear Power ◽  
Power Plants ◽  
Performance Monitoring ◽  
Power Plant Equipment ◽  
Plant Personnel ◽  
Plant Equipment

With the combination of increased demand for electric power and advancing age of operating equipment in nuclear power plants, is more important than ever to monitor the condition of plant operation. There are many factors to monitor in nuclear power plant equipment condition. However, one that is frequently overlooked is thermal performance. Often this is an area where plant personnel can find “low hanging fruit” with great return on investment. Often thermal performance analysis can discover better methods to maintain critical plant equipment resulting in more efficient outage activities. Plants also benefit from increasing their operators’ awareness of the importance of thermal performance monitoring to find lost power generation. This paper will discuss proven methods to track, trend, and prioritize thermal performance issues in order to reduce the time from the occurrence of a loss to recovery.

scholarly journals FBC utilization prospects in decentralized cogeneration units in Caucasus region countries

2003 ◽  
Vol 7 (2) ◽  
pp. 17-32
Author(s):  
George Skodras ◽  
Panayiotis Amarantos ◽  
Emmanuel Kakaras
Keyword(s):  
Power Plants ◽  
Oil And Gas ◽  
Thermal Power ◽  
Energy Resources ◽  
Fluidised Bed ◽  
Power Sector ◽  
Caucasus Region ◽  
Financial Difficulties ◽  
Low Efficiency ◽  
Performance Results

Great differences are encountered among Caucasus region countries with respect to energy resources reserves and economic conditions. Thermal power plants consist of obsolete and inefficient units, while the Soviet-type large heating systems in the area collapsed after 1992 and their reconstruction is considered uneconomic. Renovation needs of the power and heat sector, and the potential of Fluidised Bed Combustion implementations in decentralized cogeneration units were investigated, since operating oil and gas power plants exhibit high fuel consumption, low efficiency and poor environmental performance. Results showed significant prospects of Fluidised Bed Combustion utilization in decentralized cogeneration units in the Caucausus region heat and power sector. Their introduction constitutes an economically attractive way to cover power and heat demands and promotes utilization of domestic energy resources in all of three countries, provided that financial difficulties could be confronted.

scholarly journals Increasing the efficiency of nuclear power plant equipment at the design stage

2020 ◽  
Vol 178 ◽  
pp. 01008
Author(s):  
Mikle Egorov ◽  
Anastasiya Ukolova ◽  
Ivan Kovalenko ◽  
Irina Krectunova ◽  
Nataliya Lavrovskaya ◽  
...  
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Computer Modeling ◽  
Software Package ◽  
Nuclear Power ◽  
Power Plants ◽  
Design Stage ◽  
Power Plant Equipment ◽  
Plant Equipment

It is possible to increase the efficiency of the nuclear power plants equipment in various ways. In particular, one of the most relevant is the active use of computer modeling at different stages of work. The effectiveness the software package used directly affects the quality of the installation equipment. Depending on the stage at which the software package is used, it has various priority properties for the most effective application.

Discussion on Safety Classification for Equipment of Nuclear Power Plants

2018 ◽  
Author(s):  
He Dan ◽  
Zhang Yue
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Nuclear Power ◽  
Power Plants ◽  
Nuclear Power Plants ◽  
Real Life ◽  
Classification Theory ◽  
Power Sources ◽  
Power Plant Equipment ◽  
Plant Equipment

Nuclear power plant is composed of many structures, systems and components. In the design and development of nuclear power plants, in order to improve their safety, more and more designers realized that the standards and methods of design, manufacture and supervision of nuclear facilities and equipment have changed a lot. In the new period, facing the deteriorating environment, green, safety and environmental protection are all the things we have to pursue in our real life. Therefore, it is urgent to develop clean and efficient nuclear power sources and focus on improving the safety, reliability and economy of nuclear power plants. For extreme accidents that are extremely unlikely, the equipment of nuclear power plant should be kept safe and worthy of further exploration under the design extension conditions. In order to ensure nuclear safety, according to the practical experience at home and abroad and the practice of new nuclear power plant, it is proposed to improve the safety classification theory and method of nuclear power plant equipment. At the same time, combined with the in service inspection, equipment identification, quality assurance requirements, maintainability and technical maturity of nuclear power plant equipment, we comprehensively and deeply study the safety classification of nuclear power plant equipment.

Sign in / Sign up

Export Citation Format

Share Document