scholarly journals Improving of the water preparation systems in the industry thermal power plants

2018 ◽  
Vol 145 ◽  
pp. 05016
Author(s):  
Daniela Choshnova
Keyword(s):  
Power Plants ◽  
Pure Water ◽  
Thermal Power ◽  
Thermal Power Plants ◽  
Heat Power ◽  
Ultra Pure Water

Some modern possibilities for modernization of the water preparation in the heat power plants of metallurgical enterprises are presented. It is focused on the ecological and technological advantages of the methods for obtaining of ultra-pure water. This work is not intended to justify the need of usage of particular technology in an object. This is a separate task requiring in-depth consideration.

scholarly journals ENGINEERING-GEOLOGICAL AND GEOECOLOGICAL PROBLEMS OF HEAT POWER COMPLEXES ON URBAN AREAS

2021 ◽  
pp. 3-23
Author(s):  
T.V. Kril ◽  
M.G. Demchyshyn
Keyword(s):  
Urban Areas ◽  
Power Plants ◽  
Thermal Stresses ◽  
Thermal Power ◽  
Chemical Pollution ◽  
Thermal Power Plants ◽  
Geological Hazards ◽  
Heat Power ◽  
Geological Processes ◽  
Geological Conditions

The impacts of thermal energy plants on the geological environment include the chemical pollution of groundwater and soils, changes in their physical and mechanical properties, and the induction of thermal, vibrational, and electromagnetic fields in the soil bases. The aim of the research is to determine geological hazards in large cities, where thermal powerplants and combined heat and power plants are located. The objects of research were soil foundations, buildings ofthermal power plants of industrial and urban agglomerations of Kyiv, Kharkiv, Dnipro and Odesa. The following hazardous objects have been identified in the thermal power plants located within the settlements: flue-gas stacks (static load, dynamic influences at significant wind loads, impact on the ecological state); cooling towers and cooling pools(leaks, additional soil moisture); engine rooms (static loading and vibration effects from equipment operation); pipelines(leaks, formation of thermal stresses in soils); ash settlers (environmental impact). The positions of heat power plant objects in relation to the functional zones of the city are analyzed. Description of soil bases is given. It is established that the bases of the thermal power plants buildings are mainly dispersed incoherent (sandy) and weakly cohesive (loess-like)soils. Changes in engineering and geological conditions during the operation of the thermal power plants, which can cause dangerous geological processes and provoke emergency situations, have been assessed. Indicators of criteria for identification of geological hazards when assessing risks during the operation of the thermal power plants are proposed on the basis of engineering-geological processes caused by technogenic factors.

scholarly journals Development of ion chromatography methods for the determination of trace anions in ultra pure water from power plants

2005 ◽  
Vol 70 (7) ◽  
pp. 995-1003 ◽  
Author(s):  
Dragana Cickaric ◽  
Ivana Dersek-Timotic ◽  
Antonije Onjia ◽  
Ljubinka Rajakovic
Keyword(s):  
Ion Chromatography ◽  
Power Plants ◽  
Pure Water ◽  
Thermal Power ◽  
High Pressure Pump ◽  
Anion Exchange Column ◽  
Pump System ◽  
Ultra Pure Water ◽  
Low Concentrations ◽  
Generating Equipment

A suppressed ion chromatography (IC) technique, using a carbonate/hydrogen carbonate or a hydroxide eluent, has been evaluated as a monitoring tool for the detection of major anions (F-, Cl-, NO3-, PO43- and SO42-) in ultra pure water and condensed steam from thermal power plants. An electrical conductivity detector with an anion-exchange column (IonPac AS14), an auto self-regenerating suppressor (ASRS), and an isocratic high-pressure pump system were used for the detection of low concentrations of inorganic anions. It was shown that the suppressed IC technique provides a suitable means for preventing possible damage to generating equipment in power plants. The detection limits of the method for the anions of interest were < 0.3 ?g/L.

On the prospect of introduction of plasma ignition in power boilers

2019 ◽  
Vol 12 (1) ◽  
pp. 22-28
Author(s):  
V. Ye. Mikhailov ◽  
S. P. Kolpakov ◽  
L. A. Khomenok ◽  
N. S. Shestakov
Keyword(s):  
Russian Federation ◽  
Solid Fuel ◽  
Power Plants ◽  
Thermal Power ◽  
Fuel Oil ◽  
Solid Fuels ◽  
Thermal Power Plants ◽  
Plasma Ignition ◽  
The Russian Federation ◽  
Capital Construction

One of the most important issues for modern domestic power industry is the creation and further widespread introduction of solid propellant energy units for super-critical steam parameters with high efficiency (43–46%) and improved environmental parameters. This will significantly reduce the use of natural gas.At the same time, one of the major drawbacks of the operation of pulverized coal power units is the need to use a significant amount of fuel oil during start-up and shutdown of boilers to stabilize the burning of the coal torch in the variable boiler operating modes.In this regard, solid fuel TPPs need to be provided with fuel oil facilities, with all the associated problems to ensure the performance (heating of fuel oil in winter), reliability and safety. All of the above problems increase both the TPP capital construction costs, and the electricity generating cost.A practical solution to the above problems at present is the use of a plasma technology for coal torch ignition based on thermochemical preparation of fuel for combustion. The materials of the developments of JSC “NPO CKTI” on application of plasmatrons in boilers of thermal power plants at metallurgical complexes of the Russian Federation are also considered.Plasma ignition systems for solid fuels in boilers were developed by Russian specialists and were introduced at a number of coal-fi red power plants in the Russian Federation, Mongolia, North Korea, and Kazakhstan. Plasma ignition of solid fuels is widely used in China for almost 30% of power boilers.The introduction of plasma-energy technologies will improve the energy efficiency of domestic solid-fuel thermal power plants and can be widely implemented in the modernization of boilers.During the construction of new TPPs, the construction of fuel oil facilities can be abandoned altogether, which will reduce the capital costs of the construction of thermal power plants, reduce the construction footprint, and increase the TPP safety.

Features of antibodies against benzo[a]pyrene formation in workers of coal mines and thermal power plants

2019 ◽  
pp. 9-14
Author(s):  
Ye. G. Polenok ◽  
S. A. Mun ◽  
L. A. Gordeeva ◽  
A. A. Glushkov ◽  
M. V. Kostyanko ◽  
...  
Keyword(s):  
Power Plant ◽  
Thermal Power Plant ◽  
Power Plants ◽  
Reference Group ◽  
Coal Dust ◽  
Thermal Power ◽  
Coal Mines ◽  
Serum Levels ◽  
Thermal Power Plants ◽  
Immune Reactions

Introduction.Coal dust and coal fi ring products contain large amounts of carcinogenic chemicals (specifically benz[a]pyrene) that are different in influence on workers of coal mines and thermal power plants. Specific immune reactions to benz[a]pyrene therefore in these categories of workers can have specific features.Objective.To reveal features of antibodies specifi c to benz[a]pyrene formation in workers of coal mines and thermal power plants.Materials and methods.The study covered A and G class antibodies against benz[a]pyrene (IgA-Bp and IgG-Bp) in serum of 705 males: 213 donors of Kemerovo blood transfusion center (group 1, reference); 293 miners(group 2) and 199 thermal power plant workers (group 3). Benz[a]pyrene conjugate with bovine serum albumin as an adsorbed antigen was subjected to immune-enzyme assay.Results.IgA-Bp levels in the miners (Me = 2.7) did not differ from those in the reference group (Me = 2.9), but in the thermal power plant workers (Me = 3.7) were reliably higher than those in healthy men and in the miners (p<0.0001). Levels of IgG-Bp in the miners (Me = 5.0) appeared to be lower than those in the reference group (Me = 6.4; (p = 0.05). IgG-Bb level in the thermal power plantworkers (Me = 7.4) exceeded the parameters in the healthy donors and the miners (p<0.0001). Non-industrial factors (age and smoking) appeared tohave no influence on specific immune reactions against benz[a]pyrene in the miners and the thermal power plant workers.Conclusions.Specific immune reactions against benz[a]pyrene in the miners and the thermal power plant workers are characterized by peculiarities: the miners demonstrate lower levels of class A serum antibodies to benz[a]pyrene; the thermal power plant workers present increased serum levels of class G antibodies to benz[a]pyrene. These peculiarities result from only the occupational features, but do not depend on such factors as age, smoking and length of service at hazardous production. It is expedient to study specific immune reactions to benz[a]pyrene in workers of coal mines and thermal power plants, to evaluate individual oncologic risk and if malignancies occur.

How Flexible Do Thermal Power Plants with CCS Need to Be?

2019 ◽  
Author(s):  
Matthias Schnellmann ◽  
David Reiner ◽  
Stuart Scott ◽  
Chi Kong Chyong
Keyword(s):  
Power Plants ◽  
Thermal Power ◽  
Thermal Power Plants
Sign in / Sign up

Export Citation Format

Share Document