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Calculation of Brown Coal Boiler for SCR Application
Mizerovský, Karel ; Bursa, Robert (referee) ; Skála, Zdeněk (advisor)
This Master´s thesis deals with the verification calculation of boiler which burns brown coal for the application of the selective catalytic reduction method. The thesis is divided into several parts. In the first of all is performed the calculation of the furnace chamber which involves stoichiometrics calculations and enthalpy calculations of air and flue gas. In the second part the heat balance of the boiler, the boiler losses and the thermal efficiency are determined. After all the heating surfaces are calculed for the verify the dimensions. In the conclusion of the thesis we looked for the temperature range which is used for the SCR application. Then the improvements for the appropriate temperature range are designed.
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NOx Reduction System
Karafa, Pavel ; Bradávka, Marek (referee) ; Svída, David (advisor)
This diploma thesis deals with the issue of nitrogen oxides emissions in exhaust gases and possibilities of their reduction. The task of the thesis was analysis of systems for NOX reduction by contemporary diesel engines, design and construction of NOX reduction device for given diesel engine, then verify functionality of this system compiled from commercially available components. In the last part of thesis available measurements will be made with an analysis of achieved results.
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Incineration plant of middle treatment capacity – flue gas cleaning system
Krejčí, Tomáš ; Kropáč, Jiří (referee) ; Bébar, Ladislav (advisor)
Analysis of the regional energy supply, shows that suitable alternative may be a combination of primary energy sources with the municipal solid waste to energy plant. Starting from the fact that the regional thermal energy needs are characterized by smaller power demand, but relatively significant seasonal fluctuations in heat supply. These factors limit the processing performance of the considered waste to energy plant that could be included in the system of regional energy supply. The aim of the thesis was to propose adequate treatment capacity for regional waste to energy plant and explore alternative solutions in off-gas cleaning for exhaust gases generated during incineration of MSW. The balance sheets of two alternative solutions off gas cleaning are part of the thesis, both in terms of material and energy consumption. Presented evaluation of economic demands alternative arrangement of off gas cleaning includes operating costs and the impact on earnings from energy production.
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The proposal of measurements to fulfill emission limits for boiler of power unit 210 MW
Smokoň, Pavol ; Ing.Ondřej Nechvátal (referee) ; Baláš, Marek (advisor)
This master‘s thesis deals with denitrification of brown coal-fired boiler of electric power plant. First chapters describe technical characteristics of the boiler and possible measurements which would lead to lowering NOx emissions. In order for boiler to meet emission standards valid from 1.1.2016 flue gas treatment by selective catalytic reduction is proposed. Main part of the thesis is thermal calculation of the boiler with modifications necessary in order to apply SCR. The aim of calculation is to determine flue gas exit temperature and temperature at catalyst area in order to assess the suitability of proposed modifications.
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Technology of Selective Catalytic Reduction
Kudlík, Michael ; Janoušek, Michal (referee) ; Dundálek, Radim (advisor)
This bachelor thesis is focused on technology of selective catalytic reduction. The technology was created as a result of introduction of strict emission limits which manufacturers with this technology reach. First part of this thesis deal with the composition of the exhaust gases, where are dismembered the various elements, and then are given here the European emission limits.Then is thesis focused on ways of reducing emissions of diesel engines which describes the function of exhaust gas recirculation and a function of selective catalytic reduction. Then are described development systems selective catalytic reduction. The conclusion consists of the use and application of Automobile Manufacturers.
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Unit Injectors
Cihlář, Lukáš ; Drápal, Lubomír (referee) ; Dundálek, Radim (advisor)
This bachelor’s thesis deals with the description of unit-injector system. Injection system used in passenger cars as well as Unit-Pump-System used in trucks is described. One chapter deals with general problems of emissions, including description systems of the reduction exhaust gases. In the end is the practical application of the system in the engines of the Volkswagen Group.
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The possibilities of utilization of scoira from high-temperature combustion of coal
Dobeš, Jiří ; Švec, Jiří (referee) ; Opravil, Tomáš (advisor)
This thesis deals with the possibility of usage boiler slag in construction industry and related fields. Within this study is observed the influence of the amount of added boiler slag on the properties of pastes and mortars based on Portland cement. The influence of the addition of superplasticizer was further studied as well. The prepared samples were tested for mechanical properties such as tensile strength, bending and compression strength in the time dependence of the standard wet storage. The obtained data were further processed and evaluated.
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Stage IV Emission Standards for Tractor Engines
Vít, Jakub ; Beran, Martin (referee) ; Dundálek, Radim (advisor)
The aim of this bachelor thesis is to explain the mechanism of injection of carbamide and its installation on a vehicle. The first part of this work deals with the reduction of pollutants in the exhaust gases and with the emissions standards which limit the level of pollutants in the exhaust gases. The second part consists of an overview of tractor brands available at Czech market and their classification based on the type of system they use on their new models to reduce the pollutants in the exhaust gases.
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