MODELING THE TECHNOGENIC IMPACT OF CHPS ON THE ENVIRONMENT AND THE DEVELOPMENT OF ENGINEERING AND ENVIRONMENTAL PROTECTION MEASURES

2019 ◽  
Vol 12 (3) ◽  
pp. 27-34
Author(s):  
Алла Звягинцева ◽  
Alla Zvyaginceva ◽  
Светлана Сазонова ◽  
Svetlana Sazonova ◽  
В. Кульнева ◽  
...  
Keyword(s):  
Power Plants ◽  
Thermal Power ◽  
Coal Ash ◽  
Combined Heat And Power ◽  
Fuel Oil ◽  
Protection Measures ◽  
Technogenic Impact ◽  
Energy Facility ◽  
Negative Environmental Impact ◽  
Fuel Source

The waste generated during the operation of the thermal electric central, an energy facility, is considered. The analysis of atmospheric pollution by emissions of the Voronezh TPP-1, which uses coal as the main fuel, is carried out. A comparison is made with a thermal power plant using gas as a fuel source. The maximum allowable emission standards for pollutants generated during the use of coal are established and the excess of the MPC value by various types of emissions is shown: dioxide and nitric oxide; fuel oil and NO2 + SO2 ash; sulphurous anhydride and carbon monoxide; soot and coal ash. The size of the Sanitary Protection Zone of TPP-1 was determined. Measures aimed at reducing the negative environmental impact of such energy facilities as combined heat and power plants are proposed

ASSESSMENT OF THE PROCESS OF TECHNOGENIC POLLUTION OF THE ATMOSPHERE BY HEAT POWER FACILITIES AND THE DEVELOPMENT OF ENVIRONMENTAL ENGINEERING MEASURES

2019 ◽  
Vol 12 (3) ◽  
pp. 34-41
Author(s):  
Алла Звягинцева ◽  
Alla Zvyaginceva ◽  
Светлана Сазонова ◽  
Svetlana Sazonova ◽  
Николай Мозговой ◽  
...  
Keyword(s):  
Power Plants ◽  
Thermal Power ◽  
Combined Heat And Power ◽  
Environmental Engineering ◽  
Technogenic Pollution ◽  
Heat Power ◽  
Technogenic Impact ◽  
Production Processes ◽  
Engineering Measures ◽  
Environmental Measures

Technological processes at thermal power facilities - combined heat and power plants - are examined. The principle of operation of heat power facilities is considered on the example of the Voronezh TPP-1. The equipment is considered, with the help of the rational use of which the required level of ecological safety of the technogenic object can be achieved. Taking into account the peculiarities of the production processes at the Voronezh TPP-1, the most effective set of engineering, technical and environmental measures aimed at reducing the technogenic impact of the TPP on the surrounding city atmosphere is proposed

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.

Consumption of combustible minerals in the context of the targets of sustainable development of Ukraine and global environment changes

2021 ◽  
Vol 3-4 (185-186) ◽  
pp. 109-125
Author(s):  
Myroslav Podolskyy ◽  
Dmytro Bryk ◽  
Lesia Kulchytska-Zhyhailo ◽  
Oleh Gvozdevych
Keyword(s):  
Sustainable Development ◽  
Renewable Energy ◽  
Natural Gas ◽  
Power Plants ◽  
Renewable Energy Sources ◽  
Thermal Power ◽  
Energy Resource ◽  
Fuel Oil ◽  
Energy Sources ◽  
The European Union

An analysis of Ukraine’s sustainable development targets, in particular in the field of energy, resource management and environmental protection, are presented. It is shown that regional energetic is a determining factor for achieving the aims of sustainable development. Changes in the natural environment in Ukraine due to external (global) and internal (local) factors that are intertwined and overlapped can cause threats to socio-economic development. It is proved that in the areas of mining and industrial activity a multiple increase in emissions of pollutants into the environment are observed. The comparison confirmed the overall compliance of the structure of consumption of primary energy resources (solid fossil fuels, natural gas, nuclear fuel, oil and petroleum products, renewable energy sources) in Ukraine and in the European Union, shows a steaby trend to reduce the share of solid fuels and natural gas and increasing the shares of energy from renewable sources. For example, in Ukraine the shares in the production and cost of electricity in 2018 was: the nuclear power plants – 54.33 % and in the cost – 26.60 %, the thermal power – 35.95 and 59.52 %, the renewable energy sources – 9.6 and 13.88 %. The energy component must be given priority, as it is crucial for achieving of all other goals of sustainable development and harmonization of socio-economic progress. The paper systematizes the indicators of regional energy efficiency and proposes a dynamic model for the transition to sustainable energy development of the region.

IMPROVING THE RELIABILITY OF THE FUEL OIL HEATING SYSTEM AT THE TYUMEN TETS-2

2021 ◽  
Vol 7 (1) ◽  
pp. 79-91
Author(s):  
Boris V. GRIGORIEV ◽  
Ulyana Yu. SHASTUNOVA
Keyword(s):  
Thermal Insulation ◽  
Heat Balance ◽  
Thermal Power ◽  
Heating System ◽  
Ambient Air ◽  
Fuel Oil ◽  
Calculation Methods ◽  
Input And Output ◽  
Energy Facility ◽  
The Heat Balance

This article describes an engineering solution that allows a significant reduction in the material costs of heating reserve fuel (fuel oil) at the energy facility of the Tyumen Thermal Power Plant No. 2 (TETs 2), as well as make the heating system more reliable and less energy-intensive. Using the methods for calculating the input and output parameters of the supply pipeline and finding the surface area of the heat exchange of the coil, the authors describe the means for finding the thickness of the thermal insulation of the pipe and tank. The main equations for creating calculation methods are the heat balance equation. Using the criterion dependencies has helped in calculating the process of convective heat transfer. In addition, the authors provide the graphs for determining the steam flow rate depending on the ambient air temperature and wind speed and nomograms for determining the temperature inside the thermal insulation of the tank.

scholarly journals Influence of the Size of Coal Ash FAU Zeolites Used as Dopants on the Sensing Properties of Nb2O5 Thin Films

2020 ◽  
Vol 2 (1) ◽  
pp. 3
Author(s):  
Katerina Lazarova ◽  
Silviya Boycheva ◽  
Marina Vasileva ◽  
Denitza Zgureva ◽  
Tsvetanka Babeva
Keyword(s):  
Thin Films ◽  
Power Plants ◽  
Thermal Power ◽  
Coal Ash ◽  
Reflectance Spectra ◽  
Sensing Properties ◽  
Volatile Organic ◽  
Coating Method ◽  
Reflectance Measurements

In this study, solid waste from coal combustion in thermal power plants (TPPs) was used for the synthesis of zeolite Na-X samples. They were prepared by the long-term alkaline atmospheric conversion of coal ash collected from the electrostatic precipitators in the TPP “AES Galabovo”. When used in the form of thin films/layers, the optical detection of volatile organic compounds (VOCs) is possible due to a change in their reflectance spectra and color. In order to improve the sensing properties of synthesized zeolites, they were wet milled for 60 s and both milled and unmilled zeolites were used as dopants for the niobium oxide matrix in the form of thin films deposited by the spin-coating method on a silicon substrate. The surface morphology and structure of both zeolite powders were studied by scanning electron microscopy, while their size was determined by dynamic light scattering (DLS) spectra. Optical constants (refractive index, n, and extinction coefficient, k) and the thickness of the films were calculated from reflectance measurements. The change in the reflection coefficient ∆R of the films was determined from measured reflectance spectra prior to and after exposure to probe acetone molecules. An increase in the reaction of the films with milled zeolites to acetone, compared to the samples with unmilled zeolites, is demonstrated.

scholarly journals On the issue of fire hazard the fuel oil facilities of thermal power plants

2016 ◽  
Vol 92 ◽  
pp. 01038
Author(s):  
Arkadiy V. Zakharevich ◽  
Dmitriy N. Tsymbalov
Keyword(s):  
Power Plants ◽  
Fire Hazard ◽  
Thermal Power ◽  
Fuel Oil ◽  
Thermal Power Plants

POSSIBLE USE OF FLY ASH IN CERAMIC INDUSTRIES: AN INNOVATIVE METHOD TO REDUCE ENVIRONMENTAL POLLUTION

2013 ◽  
Vol 22 ◽  
pp. 99-102 ◽  
Author(s):  
GAYATRI SHARMA ◽  
S. K. MEHLA ◽  
TARUN BHATNAGAR ◽  
ANNU BAJAJ
Keyword(s):  
Fly Ash ◽  
Power Plants ◽  
Fine Particles ◽  
Thermal Power ◽  
Coal Ash ◽  
Natural Soil ◽  
Thermal Power Plants ◽  
Silica Alumina ◽  
Near Future ◽  
Land Water

The process of coal combustion results in coal ash, 80% of which is very fine in nature & is thus known as fly ash. Presently, in India, about 120 coal based thermal power plants are producing about 90-120 million tons of fly ash every year. With increase in demand of power energy, more and more thermal power plants are expected to commission in near future and it is expected that fly ash generation will be 225 million tons by 2017. Disposal of fly ash requires large quantity of land, water and energy and its fine particles, if not disposed properly, by virtue of their weightless, can become air born and adversely affect the entire Environment. These earth elements primarily consist of silica, alumina & iron etc. and its physicochemical parameters are closely resembles with volcanic ash, natural soil etc. These properties, therefore, makes it suitable for use in ceramic industries and helps in saving the environment and resources.

scholarly journals Coal Fly Ash Ceramics: Preparation, Characterization, and Use in the Hydrolysis of Sucrose

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Ricardo Pires dos Santos ◽  
Jorge Martins ◽  
Carlos Gadelha ◽  
Benildo Cavada ◽  
Alessandro Victor Albertini ◽  
...  
Keyword(s):  
Fly Ash ◽  
Surface Area ◽  
Power Plants ◽  
Coal Fly Ash ◽  
Thermal Power ◽  
Coal Ash ◽  
Mineralogical Composition ◽  
Degree Of Hydrolysis ◽  
High Degree ◽  
Hydrolysis Of

Coal ash is a byproduct of mineral coal combustion in thermal power plants. This residue is responsible for many environmental problems because it pollutes soil, water, and air. Thus, it is important to find ways to reuse it. In this study, coal fly ash, obtained from the Presidente Médici Thermal Power Plant, was utilized in the preparation of ceramic supports for the immobilization of the enzyme invertase and subsequent hydrolysis of sucrose. Coal fly ash supports were prepared at several compaction pressures (63.66–318.30 MPa) and sintered at 1200°C for 4 h. Mineralogical composition (by X-ray diffraction) and surface area were studied. The ceramic prepared with 318.30 MPa presented the highest surface area (35 m2/g) and amount of immobilized enzyme per g of support (76.6 mg/g). In assays involving sucrose inversion, it showed a high degree of hydrolysis (around 81%) even after nine reuses and 30 days’ storage. Therefore, coal fly ash ceramics were demonstrated to be a promising biotechnological alternative as an immobilization support for the hydrolysis of sucrose.

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