scholarly journals 3D visualization of the results of using modern OFA technology on the example of real boiler

2021 ◽  
Author(s):  
Mustefa Jibril
Keyword(s):  
Power Plants ◽  
3D Visualization ◽  
Thermal Power ◽  
Technical Improvement ◽  
Entire Volume ◽  
Industrial Enterprises ◽  
Air Supply ◽  
Atmosphere Control ◽  
Production Technologies ◽  
The Republic

The leading place in the world for environmental protection is currently occupied by the protectionof the air basin. And the main sources of atmospheric pollution are industrial enterprises, motor transport andthermal power plants. Thus, there is an obvious need to increase attention to the problems of the innovationsector, mainly in the areas of technical improvement of heat and power industry enterprises. Therefore, thestudy of the problems of reducing the amount of harmful emissions into the atmosphere, control and regulationof its quality, as well as the study of new various methods of innovative development of thermal power is anurgent task at present, requiring a serious scientific approach. In the proposed work, computer experimentswere carried out in the field of innovative energy production technologies (the use of modern "sharp blast"OFA technology) at a specific thermal power facility of the enterprise of the Republic of Kazakhstan. Duringthe experiment, various ways of supplying additional air through OFA nozzles were investigated: OFA=0%(basic version without additional air supply), OFA=10% and OFA=18%. For these three modes, a comparativeanalysis of the aerodynamics of the furnace part of the boiler was performed according to the obtaineddistributions of the temperature and concentration fields of nitrogen oxide NO over the entire volume of thecombustion chamber. The results obtained were compared with experimental data obtained during experimentsconducted directly at the CHP.

scholarly journals 3D Visualization of the Results of Using Modern Ofa Technology on the Example of Real Boiler

2022 ◽  
Vol 16 ◽  
pp. 232-238
Author(s):  
А. S. Аskarova ◽  
S. А. Bolegenova ◽  
S. A. Bolegenova ◽  
V. Yu. Maximov ◽  
М. Т. Beketayeva
Keyword(s):  
Power Plants ◽  
3D Visualization ◽  
Thermal Power ◽  
Computer Experiments ◽  
Technical Improvement ◽  
Entire Volume ◽  
Industrial Enterprises ◽  
Air Supply ◽  
Innovation Sector ◽  
The Republic

The leading place in the world for environmental protection is currently occupied by the protection of the air basin. And the main sources of atmospheric pollution are industrial enterprises, motor transport and thermal power plants. Thus, there is an obvious need to increase attention to the problems of the innovation sector, mainly in the areas of technical improvement of heat and power industry enterprises. Therefore, the study of the problems of reducing the amount of harmful emissions into the atmosphere, control and regulation of its quality, as well as the study of new various methods of innovative development of thermal power is an urgent task at present, requiring a serious scientific approach. In the proposed work, computer experiments were carried out in the field of innovative energy production technologies (the use of modern "sharp blast" OFA technology) at a specific thermal power facility of the enterprise of the Republic of Kazakhstan. During the experiment, various ways of supplying additional air through OFA nozzles were investigated: OFA=0% (basic version without additional air supply), OFA=10% and OFA=18%. For these three modes, a comparative analysis of the aerodynamics of the furnace part of the boiler was performed according to the obtained distributions of the temperature and concentration fields of nitrogen oxide NO over the entire volume of the combustion chamber. The results obtained were compared with experimental data obtained during experiments conducted directly at the CHP.

Some Issues Quantifying Low-carbon of an Achievement Energy and Industry

2021 ◽  
Vol 23 ◽  
pp. 446-457
Author(s):  
Malik G. Ziganshin
Keyword(s):  
Greenhouse Gases ◽  
Power Plants ◽  
Thermal Power ◽  
Low Carbon ◽  
Toxic Compounds ◽  
Industrial Enterprises ◽  
Maximum Permissible Concentrations ◽  
Objective Control ◽  
The Republic ◽  
Numerical Indicator

In this work, for use as a unified tool within the framework of ISO 50001, a methodology for rating assessment of the processing of emissions with global pollutants is proposed, which was developed by the authors and recommended for use by state documents of the Republic of Tatarstan, Russia. It is distinguished by the absence of not transparences elements. As the initial data, the actual background concentrations (according to WMO data), the annual ceiling of greenhouse gas emissions and the maximum permissible emissions of toxic compounds, information on the characteristics of emission sources are taken for the enterprise, and as operational constants, the global warming potentials of greenhouse gases (GWP100) and officially approved values of maximum permissible concentrations of toxic compounds (MPC). The method is based on the equation (presented here at annotation in a simplified form), which gives a numerical indicator (rating) R of the efficiency of a production facility in terms of hazardous emissions into the atmosphere, taking into account greenhouse gases and energy costs arising from their removal. Currently, the technique is adapted to the energy sector; for wider adaptation to various industries, a low-carbon rating program has been drawn up for boiler houses, thermal power plants and industrial enterprises. It also meets the needs of understanding and predicting possible deviations of emission parameters from the standardized indicators. Therefore, it can serve as a tool within the framework of ISO 50001, providing objective control over the choice of means to ensure compliance with the requirements for harmful components emissions including greenhouse gases in the design and modernization of production facilities. The developed program is embedded for Russian enterprises in the shell of the ‘1C: Enterprise’ platform – a software product for automating accounting and management at enterprises. The program can also be used in the software shell of the automated accounting of the activities of a particular organization in a one or the other country.

scholarly journals STUDY OF THE OXIDATION PROCESS OF NITROGEN OXIDES BY OZONE

2021 ◽  
pp. 62-70
Author(s):  
I.A. Volchyn ◽  
O.M. Kolomiets ◽  
S.V. Mezin ◽  
A.O. Yasynetskyi
Keyword(s):  
Nitrogen Oxides ◽  
Conversion Efficiency ◽  
Power Plants ◽  
Oxidation Process ◽  
Thermal Power ◽  
Nitrogen Monoxide ◽  
Molar Ratio ◽  
Gas Temperature ◽  
Gas Treatment ◽  
Industrial Enterprises

The need to reduce emissions of pollutants, in particular nitrogen oxides, as required by regulations in Ukraine, requires the use of modern technologies and methods for waste gas treatment at industrial enterprises. This is especially true of thermal power plants, which are powerful sources of nitrogen oxide emissions. The technological part of the wet or semi-dry method of purification is the area for the oxidation of nitrogen oxides to obtain easily soluble compounds. The paper presents the results of a study of the process of ozone oxidation of nitrogen oxides in a chemical reactor. Data for the analysis of the process were obtained by performing physical experiments on a laboratory installation and related calculations on a mathematical model. Studies of the oxidation process have shown that the required amount of ozone depends not only on the content of nitrogen monoxide, but also on the content of nitrogen dioxide. The process of conversion of nitrogen monoxide to a satisfactory level occurs at the initial value of the molar ratio of ozone to nitrogen monoxide in the range of 1.5…2. The conversion efficiency of nitrogen monoxide reaches 90% at a gas temperature less than 100 °C. To achieve high conversion efficiency at gas temperatures above 100 °C, it is necessary to increase the initial ozone content when the molar ratio exceeds 2. The analysis shows that the conversion efficiency of nitric oxide largely depends on the residence time of the gas mixture in the reaction zone. Due to lack of time under certain conditions, the efficiency decreases by approximately 46%. To increase it, it is necessary to accelerate the rate of oxidation reactions due to better mixing of gases by turbulence of the flow in the oxidizing reactor. Bibl. 6, Fig. 6, Tab. 3.

scholarly journals Assessment of efficiency and prospects for the use of hybrid thermal low-capacity power plants in the Republic of Vietnam

2019 ◽  
Vol 124 ◽  
pp. 01040 ◽  
Author(s):  
D. T. Nguen ◽  
D. N. Pham ◽  
G. R. Mingaleeva ◽  
O. V. Afanaseva ◽  
P. Zunino
Keyword(s):  
Power Plants ◽  
Fossil Fuels ◽  
Renewable Energy Sources ◽  
Thermal Power ◽  
Climatic Conditions ◽  
Energy Sources ◽  
Thermal Power Plants ◽  
Basic Design ◽  
Air Heating ◽  
The Republic

The growing demand for energy and fossil fuels creates increased number of difficulties, while renewable energy sources are still rarely used worldwide, particularly in Vietnam. In this article hybrid thermal power plants based on gas turbine plants are discussed, the increased efficiency of which is achieved by air heating after the compressor in solar air heaters. The basic design equations and the results of evaluating the efficiency and fuel consumption are presented for two thermal power plants of 4.6 MW and 11.8 MW. The dependence of the results on the intensity of solar extraction for the climatic conditions of the Ninh Thuan province of the Republic of Vietnam is discussed.

scholarly journals SOIL AND RADIONUCLIDES OF EASTERN HERZEGOVINA

2019 ◽  
Vol 1 (20) ◽  
Author(s):  
Vesna Tunguz ◽  
Bojana Petrović ◽  
Zoranka Malešević ◽  
Slađana Petronić
Keyword(s):  
Power Plant ◽  
Natural Radioactivity ◽  
Power Plants ◽  
Background Activity ◽  
Thermal Power ◽  
Living Environment ◽  
Radioactive Equilibrium ◽  
Spectrometric Measurements ◽  
The Republic ◽  
The Impact

Soil is one of the most important natural resources. Measurement of natural radioactivity in soil is very important to determine the amount of change of the natural background activity with time as a result of any radioactivity release. Coal mine and thermal power plant in Gacko field is a very important industrial facility. The content of radionuclides of the soil was examined at Gacko area, slag, ash and mullock dumps in thethermal power plant Gacko and soils of dumps in the process of re-cultivation. The gamma – spectrometric measurements were done in the Institute of Nuclear Sciences “Vinča” in Belgrade.Soil samples were collected in 2010/2014 at more locations in eastern part of Republic of Srpska. After removing the stones and vegetation, all soil samples for Gama spectrometric measurements dried up to 0 105 C, sieved, placed in the plastic 500 mL Marinelli beakers and left for four weeks to reach radioactive equilibrium. Given that there are no specific regulations in the Republic of Srpska, the concentration of natural and produced radionuclides in samples from the working and living environment of thermal power plants, comparison with literature data from the region and the world is one way of evaluating the impact of the plant's operation on the soils. The results point to the necessity of regular monitoring of radioactivity in eastern Herzegovina in order to assess the impact of the technologically increased natural radioactivity.

scholarly journals Use of large irrigation pumping stations for highly manual daily regulation of capacities in the energy system of the Republic of Uzbekistan

2021 ◽  
Vol 264 ◽  
pp. 04057
Author(s):  
Boboraim Urishev ◽  
Muradilla Mukhammadiev ◽  
Abdurauf Abduaziz uulu ◽  
Hojiakbar Murodov
Keyword(s):  
Energy Storage ◽  
Power Systems ◽  
Power Plants ◽  
Thermal Power ◽  
Cost Savings ◽  
Energy System ◽  
Pumping Stations ◽  
Load Schedule ◽  
The Republic ◽  
Large Irrigation

Information about the problems arising from the uneven production and consumption of energy in power systems, including in the power system of the Republic of Uzbekistan, is given on the example of a daily electrical load schedule. It is noted that to successfully solve these problems, energy is accumulated in the hours of minimum consumption so that it can be used in peak hours with high consumption, and for this purpose, pumped storage power plants are used. A diagram of hydraulic energy storage is given at large pumping stations used to accumulate water in the upper reservoir in hours of minimum loads, and the accumulated volume of water is directed to generate energy, which can be used by pumping stations to supply additional water to its consumers, replenishing its losses in hours of hydraulic energy storage. The method of selection and optimization of the main parameters of this complex, based on minimizing fuel consumption in power plants while limiting the amount of accumulated energy based on the capabilities of water and energy resources of pumping stations, is presented. The calculations using the example of the Syrdarya thermal power plant show that with the integration of five nearby pumping stations into the process of energy storage and generation, significant cost savings are achieved, and the daily load schedule is significantly leveled.

scholarly journals Polymorphism of TGF-β1, TР53, CHEK2, ATM genes аnd chromosomal aberrations in workers at coal thermal electric power station

2021 ◽  
Vol 100 (1) ◽  
pp. 42-48
Author(s):  
Varvara I. Minina ◽  
Yulia A. Nelyubova ◽  
Anastaiya O. Sokolova ◽  
Yana A. Savchenko ◽  
Anastaiya V. Ryzhkova ◽  
...  
Keyword(s):  
Chromosomal Aberrations ◽  
Power Plants ◽  
Thermal Power ◽  
Chromosomal Damage ◽  
Genetic Characteristics ◽  
Industrial Enterprises ◽  
Increased Risk ◽  
Thermal Electric Power Station ◽  
Polymorphic Variants ◽  
Tgf Β1

Introduction. Working conditions at coal-fired power plants cause an increased risk of the formation of chromosomal damage in workers. The contribution of the variability of the structure of the genes controlling the cell cycle and apoptosis to the occurrence of cytogenetic disorders induced by such mutagens has been little studied. Material and methods. The polymorphic variants of the genes: TP53 (rs1042522), CHEK2 (rs555607708), ATM (rs1801516), TGF-β1 (rs1800469), and the level of chromosomal aberrations (CA) in the lymphocytes of the blood were studied. Three hundred twenty-six workers of coal-fired power plants and 267 individuals who did not work in industrial enterprises were examined. All individuals were Caucasians, residents of Kemerovo (Western Siberia, Russia). Results. The level of CA in blood lymphocytes in thermal power plant workers was established to be statistically significantly higher than that of residents of the same locality who never works in industrial enterprises (3.05 ± 0.09% versus 1.67 ± 0.07%, p = 0, 000001). The prevalence of the polymorphic variants of the TP53 (rs1042522), CHEK2 (rs555607708), ATM (rs1801516), TGF-β1 (rs1800469) genes in the group of workers was the same to those in the comparison group and corresponded to the global data obtained in Caucasians. In the group of workers with the TT genotype of the TGF-β1 gene, the frequency of metaphases with chromosome damage was statistically significantly higher than in individuals with the CC genotype (4.07 ± 0.41% versus 2.85 ± 0.10%, p = 0.006). Discussion. For the first time a significant contribution of polymorphic variants of TGF-β1 genes to the formation of chromosomal damage in working coal-fired power plants was revealed. This may be associated with an increased level of expression of the multifunctional cytokine TGF-β1 in owners of the TT genotype and its ability to influence proliferation, apoptosis, telomerase activity, and other critical cellular processes. Conclusion. The results of the study I, ndicate that not only the complex of industrial genotoxicants, but also individual genetic characteristics of the organism can influence on the formation of cytogenetic disorders in workers at thermal power plants.

scholarly journals Digitalizing the Process of Tracking Technical Condition of the Main Equipment of Energy Providing Enterprises

2021 ◽  
Vol 93 ◽  
pp. 01020
Author(s):  
Lyudmila Plotnikova ◽  
Artem Bainov ◽  
Yulia Torkunova ◽  
Maria Nadezhdina
Keyword(s):  
Power Plants ◽  
Thermal Power ◽  
Complete Information ◽  
Condition Index ◽  
Technical Condition ◽  
Direct Access ◽  
Repair Work ◽  
Technical Parameters ◽  
The Republic ◽  
Low Efficiency

The existing power facilities of the Republic of Tatarstan face a number of disadvantages related to the system for recording data on the technical condition of boiler and turbine equipment: manual calculation of the parameters of equipment operation, lack of direct access to complete information on the condition of equipment and, as a result, low efficiency in identifying malfunctions, deviations in the operation of equipment, carrying out repair work. Hence, the need for digitalization of the system for recording data on the technical condition of equipment was formed, in response to which software was developed for automating the data recording system and visualizing the technical parameters of reliability at thermal power plants. This proposal is distinguished by the introduction of digital technologies in the process of recording data on the technical condition of equipment, where for the first time the software includes a method for automatically calculating the technical condition index of boiler units. The results of the work will reduce the likelihood of an emergency state of power plant equipment.

scholarly journals Prospects for the development of traditional and unconventional energy in the Chechen Republic

2021 ◽  
Vol 23 (4) ◽  
pp. 134-144
Author(s):  
R. B. Sardalov ◽  
A. A. Elmurzaev ◽  
M. V. Debiev ◽  
A. V. Khabatov
Keyword(s):  
Renewable Energy ◽  
Gas Turbine ◽  
Power Plants ◽  
Renewable Energy Sources ◽  
Thermal Power ◽  
Regional Energy ◽  
Foreign Countries ◽  
The Republic ◽  
Electrical Loads ◽  
Effective Development

THE PURPOSE. To carry out an analysis of increasing the efficiency of energy development in the Chechen Republic. On the basis of the current structure of the power supply system of the Chechen Republic, provide indicators of the deficit of consumed electric power, as well as the generation of electricity in the republic. Consider the state of renewable energy sources in the republic and the prospects for the development of energy related to their implementation. METHODS. The analysis of the development of traditional energy, which is given close attention, is carried out, based on the experience of other subjects of Russia and foreign countries. The question of the application of the methodology for the effective development of regional energy is considered.RESULTS. A direction for the development of the energy sector of the Chechen Republic is proposed, which should inevitably be associated with thermal power plants using the most modern and efficient cycle today - steam-gas plants (CCGT), which is based on a gas turbine unit running on natural gas, being the only power plant that in the condensing mode of operation, it can supply electricity with an efficiency of more than 58%. The analysis of industrial power consumption of the largest operating and promising energy-intensive enterprises and facilities of the republic is carried out. CONCLUSION. The introduction of gas turbine plants in the centers of thermal and electrical loads helps to increase the economic efficiency of power plants. It is proposed to carry out fundamental and applied research in the field of renewable energy.

Study on the Countermeasures of SO2 Emission Reduction in Chengdu Economic Circle

2013 ◽  
Vol 807-809 ◽  
pp. 1388-1396
Author(s):  
Wen Yong Wang ◽  
Bo Jun Ke ◽  
Gao Ping Fu
Keyword(s):  
Air Quality ◽  
Chemical Industry ◽  
Power Plants ◽  
Building Materials ◽  
Thermal Power ◽  
Ambient Air ◽  
Average Concentration ◽  
National Standard ◽  
Thermal Power Plants ◽  
Industrial Enterprises

Based on a detailed survey on the source and volume of SO2 emission over Chengdu economic circle, the third-generation air quality model CMAQ is adopted for simulating the concentration of SO2 in the air over Chengdu Economic Circle. The results show that the hourly average concentration, daily average concentration and annual average concentration of SO2 in air exceed the limit of national standard, and the affected areas respectively account for 0.12%, 0.18% and 0.03% of the total area of the economic circle. Meanwhile, according to the result of calculation, the SO2 emissions of thermal power plants, chemical industry, building materials plants and industrial area sources make the largest contribution to the SO2 concentration in the air, with ratios of 36.15%, 18.67%, 11.81% and 8.34% respectively. thus,main measures to reduce emissions of SO2 in Chengdu economic circle are proposed as follows: focusing on the control of the emissions of SO2 from industrial enterprises, especially in the thermal power plants, chemical industry, building materials plants as well as industrial boilers; joint prevention and control measures should be implemented between the cities, so as to reduce the interaction caused dy emissions of SO2. With the application of the above measures, the total SO2 emissions can be reduced by 50% and the concentration of SO2 in the air can meet with the Class II of national ambient air quality Standard.

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