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Tesis sobre el tema "Uhlí"

Autor: Grafiati
Publicado: 4 de junio de 2021
Última modificación: 18 de febrero de 2022

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1

Pavlo, Matej. "Kotel na spalování hnědého uhlí". Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2016. http://www.nusl.cz/ntk/nusl-241847.

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The aim of the master’s thesis is thermal calculation and dimensional design of boiler of 235 t/h which burns brown coal. The work is divided into several parts. In the first part, stoichiometric calculation and the calculations enthalpy of flue gases and air are performed. After calculating the heat balance and loss of the boiler, the boiler efficiency is counted. In the next part, thermal calculation of combustion chamber is calculated. Subsequently, design of the individual heating surfaces is proposed. Finally, the overall heat balance of the boiler is inspected. The calculation is supplemented by drawing of the boiler.
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2

Kliš, Kamil. "Pohon pásového dopravníku pro transport uhlí". Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2013. http://www.nusl.cz/ntk/nusl-230456.

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This diploma thesis deals with designing a drivetrain for a coal belt conveyor. Thesis contains necessary calculations according to norms needed for determining suitable components of a belt conveyor. The goal of this diploma thesis was to design a drivetrain for a belt conveyor, all its components including a frame of the drivetrain and to create drawing documentation.
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3

Ševčík, Vlastimil. "Pevnostní výpočet mlýnu pro drcení uhlí". Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2014. http://www.nusl.cz/ntk/nusl-231309.

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This master's thesis deals with construction concept, execution and final evaluation of the stress-strain analysis of the main parts of the coal crushing fan mill. The main thesis part describes the general issue and different types of coal crushing fan mill. Construction part of the thesis is focused on optimal design evaluation and strength analysis of spiral body case as well as fan mill beater wheel.
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4

Lančarič, Vít. "Odlučování drobných prachových částic při spalování uhlí". Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2014. http://www.nusl.cz/ntk/nusl-231278.

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Thesis are focus for detailed description of fine solid particulates which are product from flue gas. Introduction type of Technologies for capture fine solid particulates. Calculation of electrostatic separator for specific coal and wood boiler.
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5

Baláži, Martin. "Roštový kotel na spalování uhlí a dřevní biomasy". Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2016. http://www.nusl.cz/ntk/nusl-241700.

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This thesis solves a design of a grate boiler burning wood chips or brown coal with a heat output of 160 MW. Stoichiometry flue gas is calculated according to the specified composition of each fuel. The dimensions of the individual heating surfaces are primarily calculated for burning wood chips and subsequently checked for the combustion of brown coal. Design of the boiler is completed by checking the overall heat output. Boiler design is accompanied by drawing documentation.
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6

Mizerovský, Karel. "Výpočet kotle na hnědé uhlí pro aplikaci SCR". Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2017. http://www.nusl.cz/ntk/nusl-319285.

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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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7

Hladíková, Lucie. "Účinnost procesů úpravy vody s využitím aktivního uhlí". Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2020. http://www.nusl.cz/ntk/nusl-409698.

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The subject of the thesis is the issue of pesticides in the environment and the possibility of their removal through activated carbon. The thesis is divided into two parts, the search part and the practical part. The research part is focused on description of activated carbon. It also deals with the distribution of pesticides and their degradation in the environment. In the practical part, a laboratory experiment was carried out to determine the effectiveness of removing pesticides and metabolites from the test water on two types of activated carbon.
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8

Popelka, Ondřej. "Fluidní kotel na spalování uhlí a biomasy 150t/h". Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2012. http://www.nusl.cz/ntk/nusl-230432.

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This thesis is focused in calculation and designing of fluid bed boiler for burning coal and wood biomass in the form of wood chips. The uniqueness of fluidized bed boiler is circulating fluidized layer and cyclone ash separator from flue gases beyond the combustion chamber.Work was divided into several parts due to different parameters of the fuel.. Stoichiometry calculations, emissions calculations, enthalpy of combustion and flue gas desulphurization calculations are performed in various parts.Further, calculating of the losses of boiler and its efficiency comparing to the calculation and design of each heat transfer surfaces was also solved so that resulting size and quantity meet the required specifications.Drawn set of this designed boiler based on calculations is included in the annex to this paper.
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9

Kotrla, Jan. "Aplikace popílků z fluidního spalování uhlí v žárovzdorných materiálech". Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2017. http://www.nusl.cz/ntk/nusl-316206.

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The thesis deals with the possibility of utilization of fluid ash in refractory materials and its influence on resulting properties. This work studies the effect of bed and filter ash addition on properties of the droplet and resulting mechanical properties, bulk density, shrinkage and firing temperature of stove fireclay. The subject of this thesis is also reduction of SO2 emissions evolved burning of fireclay containing fluid ash rich of anhydrite. Emissions of SO2 were observed by TG-TDA-EGA method. Characterization of prepared samples and study of heat treatment processes was based on XRD, TG-DTA-EGA, TDA, SEM–EDS, heating microscope and isothermal calorimetry.
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10

Lepeltová, Radka. "Energetická koncepce ČR -- uhlí jako nejvýznamnější domácí energetický zdroj". Master's thesis, Vysoká škola ekonomická v Praze, 2008. http://www.nusl.cz/ntk/nusl-9251.

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The state energy conception sets the direction in energy industry and outlines main instruments and trends in this area. The priority of the state energy conception is to reach energy security of the country, which can be ensured by more energy resources of the fuel mix. The main component of the domestic energy mix is brown coal, which is mostly used in brown coal electric works for generating electric energy and heat. Coal mining is and was one of the main elements of Czech Republic's national industry, but there are also negative ecological impacts connected with coal winning. Further coal mining is restricted by so-called territorial ecological limits for brown coal mining that protect the environment and community against the mining consequences. Many of the brown coal supplies can, however, also in future represent an important energy resource, which will enable security, production independence and price availability of energy. At work is further explanation of the limits and progress of breaking the limits. Other energy resources are nuclear energy and renewable energy resources, whose importance rises and which contribute to a balanced energy mix.
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11

Bayer, Petr. "Použitelnost ložového popele z vitrifikovaného lignitového uhlí v kompozitních cementech". Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2014. http://www.nusl.cz/ntk/nusl-217052.

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Předložená magisterská práce se zabývá možným použitím vitrifikovaného lignitového lóžového popele jako náhrada slinku v kompozitních cementech. Byly zkoumány vlivy přidaného vitrifikovaného lóžového popele, jeho jemnosti, alkalických roztoků a jejich koncentrací. Byly připraveny kompozitní cementy v souladu s normou DIN EN 197 – 1. V těchto cementech bylo nahrazeno 30 % slinku vitrifikovaným lóžovým popelem. Konkrétně byly připraveny kompozitní cementy s vitrifikovaným lóžovým popelem o jemnosti 5549 cm2/g a 8397 cm2/g. Dále byly přidány alkalické roztoky hydroxidů a síranů vždy o dvou různých koncentracích, za účelem stimulace pucolánové a/nebo geopolymerní reakce. Mechanické vlastnosti připravených vzorků byly charakterizovány mechanickým testováním na prizmách s rozměry 40×40×160 mm, jak je specifikováno v normě DIN EN 196 – 1. Byla provedena nedestruktivní měření dynamického elastického modulu a destruktivní testovaní na pevnosti v tlaku a v ohybu. Distribuce velikosti částic a chemická analýza vstupních materiálů byla vykonána pomocí laserové granulometrie a rentgenové fluorescence. U zatvrdlých kompozitů bylo dále zkoumáno po 2 a 28 dnech hydratace fázové složení s využitím metody rentgenové difrakce a mikrostruktura s využitím skenovací elektronové mikroskopie. Výsledky ukázaly, že mechanické vlastnosti jsou nezávislé na množství přidaných alkálií stejně jako na jemnosti přidaného vitrifikovaného lóžového popele. Nicméně, znatelně nižší mechanické pevnosti byly pozorovány pro vzorky, které byly aktivovány hydroxidy, pravděpodobně kvůli brzké tvorbě silikátového hydrogelu. Vzorky aktivované sírany nedosáhly pevností jako referenční malta.
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12

Jašová, Lucie. "Vliv těžby hnědého uhlí a rekultivací na socioekonomický rozvoj okresu Sokolov". Master's thesis, Vysoká škola ekonomická v Praze, 2008. http://www.nusl.cz/ntk/nusl-10926.

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This diploma thesis deals with revitalization of landscape and recultivation in Sokolov region. In its first part the paper deals with socioeconomic analysis of region Sokolov. The main task of this analysis is, evaluate present progress of this region. It also describes history of brown coal mining in brown coal field of Sokolov region and negative effect for landscape. Next chapters of this thesis show: recultivation in general, project documentation, financing arrangements, company Sokolovská uhelná a.s. and its privatisation. One of the most important parts of this diploma thesis deals with recultivation in Sokolov region and description of particular locations in this region. The last part gives an evaluation of socioeconomic developmet in dependence on recultivation in Sokolov region.
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13

Červená, Lucie. "Drobní zemní savci jako indikátor obnovy území po těžbě uhlí na Sokolovsku". Master's thesis, Česká zemědělská univerzita v Praze, 2016. http://www.nusl.cz/ntk/nusl-258019.

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Aim of this paper was to describe the diversity of small terrestrial mammals on selected habitats of Velka podkrusnohorska spoil heap and surrounded areas. Between years 2013 2015 there was realized seven catching on the twenty seven study sites. In every year we repeated a catches in spring and autumn period. The selected habitats were: wetlands, meadows, pine forests, oak forests and successional forests. As a capture method was chose standard line method with usage of snap traps. The obtained data were statically analysed by the R program and the diversity was compared based on the Shannon-Wiener index of diversity. We compared abundance and diversity between spoil heap study sites and surrounding study sites, which were situated out of the Velka podkrusnohorska spoil heap and was sign as control sites. We chose three study sites of every habitat situated on spoil heap and another three sites of every habitat situated out of the spoil heap (control sites). In total we caught 720 small terrestrial mammals of ted species: Crocidura leucodon, Crocidura suaveolens, Microtus arvalis, Microtus agrestis, Mus domesticus, Apodemus sylvaticus, Apodemus flavicollis, Myodes glareolus, Sorex araneus and Sorex minutus. The highest diversity was on the four wetlands sites which three of them were situated on the spoil heap. The highest abundance was at the meadow site Matyas which was situated on the spoil heap. In the overall assessment of the abundance and diversity of communities of small terrestrial mammals was confirmed equality of spoil heap sites and control sites. In the assessment of abundance and diversity of individual habitats was confirmed equality of spoil heal sites and control sites. Exception was abundance between forests spoil heap sites and control sites, where the equality of abundance was rejected because of higher abundance of control sites. We decide to compare technically restored sites and sites using managed successions on the spoil heap. The diversity of technically restored pine forests and successional forest was confirmed but the equality of abundance of these sites was rejected because of the higher abundance of successional forests. The equality of diversity and abundance of technically restored oak forests and successional forests was rejected because successional forests had higher both of these values.
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14

Lauš, Ladislav. "Roštový kotel s přirozenou cirkulací na spalování směsi dřeva a hnědého uhlí". Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2015. http://www.nusl.cz/ntk/nusl-232156.

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The work deals with the constructional and calculation design of the boiler for burning wood and combustion coal in scale (30/70-coal), in load 50 t/h, parameters of steam output p=7,5 MPa, t=480 °C and a temperature of feed water 105 °C. It is a boiler with natural water circulation by evaporation surfaces. In proposal first steichiometric calculations and enthalpic calculations of air and flue gas are performed. Then it is calculated heat balance, the boiler losses and the thermal efficiency is determined. After designing the combustion chamber and dimensions of pulls are determined. In last chapter the overall energy balance are checked. Drawing documentation of steam boiler is a part of the work.
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15

Le, Duc Duy. "Studium adsorpce přirozených organických látek na aktivním uhlí při úpravě pitné vody". Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2008. http://www.nusl.cz/ntk/nusl-216443.

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In the first part of this thesis the methodic of lab trial was studied, which will be useful for studying adsorption of natural organic matter by activated carbon. As an optimal method of testing adsorption characters jar testing was chosen. Again as an indicator of organic contamination, it was decided to use permanganate chemical oxygen demand (in Czech CHSKMn) will be used. In the second part of this thesis the adsorption characters of eight types of granular activated carbon were studied. Those granular activated carbon came from two world produces, from company NORIT five type of granular activated carbon were tested: NORIT GAC 1020, NORIT PK 1-3, NORIT GAC 1240, NORIT ROW 0.8 SUPRA a TOD NORIT ROX 0.8 and from company Chemviron Carbon three types of granular activated carbon were tested: F100 FE11120A, F400 FE11210A a TL830 FE2028B. Batch kinetic tests of natural organic matter adsorption were conducted with all types of granular activated carbon at first. For description of sorption not only the batch kinetic tests and duration needed for setting equilibrium were observed, but also the process decreasing of concentration of natural organic matters to the value of equilibrium concentration known as adsorption equilibrium was followed.
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16

Schottková, Monika. "Těžba uhlí ve světě a dopady útlumu: případová studie ČR a Německo". Master's thesis, Vysoká škola ekonomická v Praze, 2015. http://www.nusl.cz/ntk/nusl-205164.

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The aim of this thesis is to describe and analyze the impacts of the decline of coal mining on an example of two countries, namely the Czech Republic and Germany, and then to compare selected impacts and tools that have been used against the negative consequences. The work is divided into three parts, the first chapter describes the basic characteristics of coal, its use and exploitation. Second chapter deals with the current development of coal mining in the world along with its geographical presence. The final chapter analyzes and compares the Industrial Region of Ostrava and the Ruhr Valley and their current socio-economic challenges.
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17

Chmelíček, Jiří. "Kotel na spalování dřeva s hnědým uhlí (váhový poměr 50/50),30t/h". Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2013. http://www.nusl.cz/ntk/nusl-230900.

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This master´s thesis deals with the constructional and calculation design of the boiler for burning wood and sub-bituminous coal. The work is divided into several parts. First, stoichiometrics calculation and enthalpy calculations of air and flue gas are performed. It is calculated heat balance of the boiler, the boiler losses and the thermal efficiency of the boiler is determined. After designing the combustion chamber thermal calculation is made. Then, the dimensions and individual heating surfaces are proposed. At the end of the calculations are controlling the overall energy balance.
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18

Podhorský, Jakub. "Návrh granulačního kotle na černé uhlí, 540 °C, 9,4 MPa, tnv = 170 °C". Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2017. http://www.nusl.cz/ntk/nusl-318664.

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This masters’ thesis deals with a thermal design of a draft dry bottom boiler for bituminous coal that should replace a disassembled boiler in a current boiler room. Application of SCR is intended in order to reach emission standards of NOx.
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19

Dobrovický, Martin. "Ocenění společnosti Sokolovská uhelná, právní nástupce, a.s". Master's thesis, Vysoká škola ekonomická v Praze, 2011. http://www.nusl.cz/ntk/nusl-149857.

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The purpose of this diploma thesis is to estimate objectivised value of company Sokolovská uhelná, právní nástupce, a.s. on valuation date 31 December 2011. Thesis starts with introduction and overview of basic information about the company. Key part, strategic analysis, deals with analysis of sectors in which company operates, defines relevant markets, indentifies company's position on the market, forecasts prices of commodities and at the end presents forecasts of sales. In part financial analysis, complex financial health is verified. In Part generators of value and financial plan prediction of financial statements is forecasted. On these bases, discounted free cash flow valuation method is used to determine the value of company.
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20

Bartůněk, David. "Roštový kotel na spalování uhlí a bagasy - 200 t/h, 9,3 MPa, 520 °C". Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2017. http://www.nusl.cz/ntk/nusl-318807.

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The object of the thesis is to design a grate boiler for bagasse and brown coal combustion with a heat output of 160 MW. Calculations of a flue gas stoichiometry are based on known element analyses of each fuel. The crucial part of the thesis includes designs of heat-exchanging surfaces, where the bagasse is considered as the main fuel while the brown coal is the spare one. Overall thermal balance and an actual boiler efficiencies are provided in last chapters. The boiler-outlet flue gas temperature is compared with the dew point temperature at the very end of the thesis. As a part of the thesis there is a design of the boiler attached.
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21

Dvořák, Aleš. "Navrhněte roštový parní kotel na spalování dřeva a hnědého uhlí(poměr mísení 30/70-dřevo)". Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2014. http://www.nusl.cz/ntk/nusl-231252.

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This diploma work attends to presentation of steam grid boiler for wood and brown coal burning in scale (30/70-wood) in load 60t/h, with parametres of outgoing vapour p=7MPa, t=490°C. The work is splitted to several chapters. At the beginning I’m going to make stechiometric calculation and entalpic calculations of air and compustion gas. After that I’m going to calculate heat balance, losses of boiler and set heat efficiency of boiler. Then I’m going to suggest combustion chamber of boiler and make heat calculation. After suggestion of combustion chamber I’m going to set proportions of pulls and heat-delivery surface. In last chapter I’m giong to check heat balance. Inclosure of my work contains drawing documentation of steam boiler.
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22

Horák, Stanislav. "Návrh parního kotle na spalování hnědého uhlí, parametry páry 235 t/h, 14 MPa, 540°C". Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2014. http://www.nusl.cz/ntk/nusl-231220.

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The aim of the work is to design a brown coal combustion boiler of 235 t/h output. The work is divided into several parts. First, stechiometric calculations and calculations enthalpy of air and flue gas are performed. It is calculated heat balance of the boiler, the boiler losses and the thermal efficiency of the boiler is determined. After designing the combustion chamber thermal calculation is made. Then, individual heating surfaces are proposed and at the end of the calculations are controlling the overall energy balance of the boiler. For calculation was design documentation added.
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23

Juříček, Vlastimil. "Analýza současného stavu a rizik pro další vývoj teplárenství v ČR". Master's thesis, Vysoká škola ekonomická v Praze, 2014. http://www.nusl.cz/ntk/nusl-192747.

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The goal of the thesis is identification and analysis of key risks for Czech district heating sector with focus on coal availability and impact of the EU regulatory measures. In the Czech Republic district heating sector is an important part of energy industry. It serves heating needs of 1.5 million households and substantial amount of industry needs. Currently the question of possible brown coal shortage is becoming urgent. Dynamically changing regulatory framework generating requirements for additional investments is destabilizing. The sector is defined, its competitiveness is evaluated and further the risks are analyzed. Based on brown coal market analysis it is concluded that the current market situation can be considered as stabilized. In the long term perspective the question of possible lifting of the coal mining limits remains crucial. It is concluded that impacts of the EU regulatory measures can't be objectively evaluated at the moment. But it can be assumed that most of district heating companies will be finally able to meet the requirements.
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24

Čech, Jaroslav. "Roštový kotel na spalování uhlí a nebo dřevní biomasy o parametrech 200 t / h 9,3 MPa, 520°C". Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2015. http://www.nusl.cz/ntk/nusl-232166.

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The aim of the work is the design of a grate boiler of 200 t . h-1 output, which will burn brown coal or wood chips. The work is divided into several parts. First, stoichiometric calculation and the calculations enthalpy of flue gases and air are performed. After calculating the heat balance and loss of the boiler was counted boiler efficiency. The design of individual heating surfaces is proposed and at the end are controlled the overall heat balance of the boiler. The calculation is supplemented by drawings.
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25

Fattoum, Maršíková Martina. "Řešení prašnosti v oblasti lomu Jiří". Master's thesis, Česká zemědělská univerzita v Praze, 2015. http://www.nusl.cz/ntk/nusl-257507.

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In my thesis I deal with dustiness from the surface down, respectively, from the quarry Jiří and the influence of dust on surrounding communities, which are in the immediate vicinity of the quarry. Because of changes to the law on air protection law of ranked in stationary sources related activities sorting and other cold coal preparation and surface mines fuels, ores, industrial and their processing, primarily mining. With respect to this change mining companies should pay more attention to dustiness issues that arise during the actual mining of coal transport and further treatment of raw material. The company Sokolovská uhelná, p.n., a.s., should soon prepare a project leading to reduce dust in near quarries. I evaluated here already established measures to reduce and disposal of dustiness produced in relation to mining activities and I tried suggest any other solution to eliminate dust.
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Šišo, Peter. "Ocenenie spoločnosti OKD, a.s". Master's thesis, Vysoká škola ekonomická v Praze, 2014. http://www.nusl.cz/ntk/nusl-193975.

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Master thesis deals with current trends on coal market, relationships between prices of coal and prices of other commodities, forecasting of coal prices in fifteen years horizon utilizing statistical tools and business valuation of a company from coal mining industry. Master thesis further analyzes a sensitivity of the company value on changes in projected prices of coal and other commodities.
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27

Vodrážka, Václav. "Historický a budoucí vývoj vodních prvků v těžbou dotčeném území Severočeské hnědouhelné pánve". Master's thesis, Česká zemědělská univerzita v Praze, 2016. http://www.nusl.cz/ntk/nusl-258466.

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The work is focused on the development of water bodies in the area disturbed by lignite mining in the North Bohemian brown coal basin and Sokolov. In the last century there was destruction of the landscape and thus the disturbance of the water régime due to lignite mining. The transition from underground mining to surface mining of lignite caused the extinction of villages, roads, railways, land and greenery. Water surfaces are dried and water streams converted into new artificial troughs. Currently people try to cover up the consequences of interference with the natural landscape by restoration, creation and environmental protection. This effort is realized through land reclamation. Addressed are primarily water reclamation, evaluation of water components changes in different time periods in the and significance of these changes for the landscape, which we are going to leave to future generations.
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28

Krhut, Štěpán. "Zušlechťování bioplynu metodou PSA". Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2017. http://www.nusl.cz/ntk/nusl-318663.

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This work deals with bio gas cleaning by a PSA method and modernizing of a laboratory unit. Raw bio gas contains many unwanted elements like carbon dioxide mostly which lowers its energy potential then. To extend the possibilities of usage of bio gas it is necessary to remove such elements. One of the well-known method for eliminating CO2 out of the bio gas is the method called Pressure Swing Adsorption (PSA). This work describes PSA method and compares it with other methods for cleaning the bio gas. In the following part of my work I am introducing the original laboratory PSA unit which is placed in the laboratory of UPI institution for research purposes. The modernization of the method was made by changing the manual valves for electromagnetic ones and there was also designed a new control system unit for two control modes. For manual and for automatic. The essential function is based on remote controlling the valves either by switches or by a program. The electric control panel was created for such required modes. The automated process was controlled by Arduino programming platform which was integrated into the panel. In the case of the next measurement and reading there was created a detailed description for user on how to operate the control panel and also the comments for control program of automatization.
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Muzikářová, Věra. "Testování náplní bariérového filtru pro čištění plynu". Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-443178.

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This diploma thesis deals with the issue of pollution of the generated gas during gasification. It consists of two parts. The first part is theoretical, where there is a search describing the course of gasification. There is also an overview of impurities in the generated gas and a description of methods suitable for gas purification. The second part of the work is focused experimentally, where various fillings of the barrier filter are tested during gas cleaning.
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Kabelíková, Eva. "Sledování účinnosti vybraných adsorbentů na odstraňování mikropolutantů z pitné vody". Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2019. http://www.nusl.cz/ntk/nusl-391898.

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This diploma thesis deals with the effectiveness of selected adsorbents for the removal of micropollutants from drinking water. In the first part there are described individual types of micropollutants and their occurrence in water. Further, there are described pharmaceuticals and their consumption in the world. At the end of the first part, the possibilities of removing micropollutants in drinking water treatment are approached and two water treatment plants in the Czech Republic have been selected, which already use the technology of the removal of some micropollutants. In the practical part of this diploma thesis is performed an experiment of removal of Ibuprofen from model water by adsorption on selected materials, which are Filtrasorb F100, Bayoxide E33 and GEH.
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31

Havlas, David. "Energetické využití odpadů". Master's thesis, Česká zemědělská univerzita v Praze, 2016. http://www.nusl.cz/ntk/nusl-257524.

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This thesis is conceived as a comprehensive document about energy utilization of waste in appropriate facilities. In the first part, the thesis deals with the issue of waste production and disposal with it. Subsequently, for the introduction to the topic of Waste to Energy, is chronologically described history of energy utilization of waste in Czech Republic and also the technology of facilities, where the combustion with subsequent utilization of energy occurs. Thesis likewise contains a list of currently operating WTE plants and information about future projects for their construction in the Czech Republic. As a crucial part, is considered the assessment of WTE plants, both in terms of the impact on saving fossil fuels, and in terms of potential impact on the environment. The conclusion brings economical evaluation, which is focused on the economic efficiency of investment into these facilities.
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32

Valík, Lukáš. "Finanční analýza společnosti New World Resources Plc". Master's thesis, Vysoká škola ekonomická v Praze, 2013. http://www.nusl.cz/ntk/nusl-192104.

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This diploma thesis titled "Financial analysis of the company New World Resources Plc" is structured into three main parts. The first chapter lays down the theoretical framework of the financial analysis including the definitions of the fundamental terms, introduces the main groups of users and presents mostly applied tools. The second part aims to present relevant information about the NWR group, i.e. among others the major shareholders and controlled subsidiaries. Moreover, the substantial part of the chapter dedicates to the market development and recent news and problems related to the company. The key third part, in the help of the tools of the financial analysis, intends to interpret the causes and reasons of the development of the corporate finance of the company. The objective of the final chapter is to determine the extent of the financial health of the enterprise as well as potential risks of its future outlook.
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33

Bariyeva, Aizat. "Optimalizace adsorpce kyseliny ferulové na různých typech adsorbentů". Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2019. http://www.nusl.cz/ntk/nusl-401937.

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This thesis deals with optimalization processes of adsorption of ferulic acid on different types of sorbents. Specifically, was used the activated carbon as a sorbent of heterogeneous character and Amberlyst A-21 and Amberlit XAD-16 as macroporous polymer sorbents. The ferulic acid is fully characterized in the theoretical part and are discussed the problems of adsorption processes. To determination of the phenolic acid were used UV-VIS and HPLC instrumental methods. The main aim of the experimental part is to optimize various parameters of adsorption, including the construction of adsorption isotherms, determination of maximum adsorption capacity of individual sorbents, study of kinetics and mechanisms of adsorption. Determination of the influence of salt was studied to assess the impact of the inorganic salts on the ferulic acid adsorption capacity. Based on these parameters, was carried out determination of an optimal pH value on 3, with an optimal adsorbent load (m/V ratio = 0,009 gml-1) and a contact time of 50 min for all three adsorbents. Equilibrium studies described by adsorption isotherms and the Langmiur model fitted the best, and the maximum adsorption capacities were determined for all three sorbents with 150,4 mgg-1 for activated carbon, 209,1 mgg-1 for Amberlyst A-21 and 82 mgg-1 for Amberlyte XAD-16. In the study of kinetic models was selected pseudo-second model for all three adsorbents, which correlated with the results obtained by the Langmuir isotherm. The decrease in adsorption capacity in the determination of NaCl influence was 4 % for activated carbon, for macroporous polymer sorbents was decreased by 52 % and 55 % for Amberlyst A-21 and Amberlyt XAD-16 respectively. In a selectivity test under optimized conditions, adsorption strength increased in the order of sinapic acid ferulic acid p-coumaric acid for polymeric sorbent XAD-16 and activated carbon. For the A-21 sorbent the adsorption strength increased in the order of p-coumaric acid ferulic acid sinapic acid. The results of the work indicate the suitability of all three sorbents for the phenolic acid adsorption.
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Zdražilová, Alena. "Možnosti odstranění mikropolutantů vodárenskými procesy". Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2016. http://www.nusl.cz/ntk/nusl-240395.

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This diploma thesis is engaged in problems of micropollutants removal by water treatment process. The first part aims to define single micropollutants, possibilities of their removal in laboratory and micropollutants removal on water treatment plant. In the second part, there is data evaluation of water analyses on factual water treatment plant. Also there is description and evaluation of experiment, which aims to pesticide removal from river by using filtration across granulated active carbon.
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Krydl, Ondřej. "Uhelné elektrárny: levná elektřina vs. čisté životní prostředí". Master's thesis, Vysoká škola ekonomická v Praze, 2015. http://www.nusl.cz/ntk/nusl-264667.

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The aim of this thesis is to analyze the importance of coal-fired power plants on the market of electric energy, with emphasis on aspects that fundamentally affect their production. Coal-fired power plants belongs nowadays among socially unpopular source of electricity. In recent decades intensively growing interest groups that support state intervention and regulation of the energy sector. This is essentially a massive promotion of renewable energy sources at the expense of fossil fuel plants. Analysis of individual power sources shows that despite the current restrictive measures imposed on power plants burning fossil fuels, and especially coal-fired power plants, electricity produced from coal resources is still competitive, despite some drawbacks has many positive qualities. Coal-fired power plants produce higher amounts of greenhouse gases and other pollutants than other types of power plants. On the other hand, they are able to provide a stable supply of electricity to transmission network, and thus partially offset the high volatility of electricity supply from renewable energy sources. The price of electricity from coal-fired power plants could be considered as relatively low in comparison with other energy sources. The analysis shows that in terms of practical economic policy is not economically justified to reduce the proportion of coal-fired power plants in the total production of electricity.
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36

Pokora, Zdeněk. "Využití fluorimetrie pro detekci stopovačů proudění podzemních vod". Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2008. http://www.nusl.cz/ntk/nusl-216445.

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The thesis studies detection of fluorescein for coloration experiments in surface and underground water. The first part of the work deals with the adsorption of fluorescein on active charcoal from water and desorption by means of different desorption solutions. The results of measurements are used for practice of coloration experiments in karst research. In the second part of thesis it is researched the option of automated record of fluorescence concentration and its detection by means of laser induced fluorescence with confocal microscope.
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37

Navrátil, Petr. "Čištění bioplynu pomocí metody PSA (adsorpce za měnícího se tlaku)". Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2014. http://www.nusl.cz/ntk/nusl-231509.

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The topic of this master thesis is upgrading of biogas. As a mixture of gases produced during anaerobic digestion, contains methane which is highly energy valuable gas. But also other substances that we want to remove. We will present the motivation for upgrading biogas and the possibility of separation, generally the pressure swing adsorption method. The key parameter of this technique is the choice of a suitable adsorbent. This is possible based on the knowledge of adsorption processes, therefore, is also described below. The objective of this thesis is to determine the parameters of the pressure swing adsorption metod. To do this it is necessary to determine the adsorption capacity of the adsorbent, measure breakthrough curves of carbon dioxide and methane, and determine the pressure drop of solid bed, etc. As a result we can finally make a balance and evaluate the applicability in practice.
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38

Gottwald, Martin. "Sledování účinnosti odstraňování pesticidů ze zdrojů pitné vody vybranými adsorbenty". Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2019. http://www.nusl.cz/ntk/nusl-392265.

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In the introductory part of this diploma thesis the pesticidal substances and their legislative requirements in drinking water are described. This is followed by a description of technologies in which pesticides can be removed and used in water treatment plants. In the practical part of the thesis is described description of the experimental procedure of the removal of pesticides on two selected adsorption materials (Filtrasorb F100 and Bayoxide E33) and subsequently this experiment is evaluated.
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39

Smokoň, Pavol. "Návrh opatření pro plnění emisních limitů u kotle bloku 210 MW". Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2014. http://www.nusl.cz/ntk/nusl-231221.

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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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40

Drápalík, Martin. "Pásový dopravník přestavitelný". Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2016. http://www.nusl.cz/ntk/nusl-241913.

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The aim of this thesis is to design a conveyor belt readjustable to transport brown coal according to specific parameters. The introduction is focused on describing and dividing conveyor belts and characterizing their individual parts. The main part of the thesis is a description of selected components and design solutions, a functional computation carried out in accordance with the standard ČSN ISO 5048 and further an analysis of transported material's properties. The drafting documentation is attached to the thesis.
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41

Kadlec, Tomáš. "Návrh parního kotle". Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2016. http://www.nusl.cz/ntk/nusl-241918.

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This thesis is focused on design of black coal combustion boiler of 160t/h output. It consists of several parts. First, stechiometric calculations and enthalpy of air and gas are made, then heat balance of boiler and the boiler losses are calculated, and also thermal efficiency is determined. In next step, the combustion chamber is designed and its thermal calculation is made. Then, each of heating surfaces are designed, and in the last step overall energy balance of the boiler is checked. The scheme of pressure system and design documentation added.
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42

Drápalík, Martin. "Pásový dopravník přestavitelný". Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2015. http://www.nusl.cz/ntk/nusl-231119.

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The aim of this thesis is to design a conveyor belt readjustable to transport brown coal according to specific parameters. The introduction is focused on describing and dividing conveyor belts and characterizing their individual parts. The main part of the thesis is a description of selected components and design solutions, a functional computation carried out in accordance with the standard ČSN ISO 5048 and further an analysis of transported material's properties. The drafting documentation is attached to the thesis.
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43

Kašparová, Jarmila. "Využití biouhlí jako sorpčního materiálu pro odstranění syntetických vonných látek z vod". Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2020. http://www.nusl.cz/ntk/nusl-433203.

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Synthetic fragrances (musk) are artificially produced organic compounds. It is used as fragrance ingredient in personal care products. Substances from this group have the ability to withstand the cleaning process in wastewater treatment plants. The physico-chemical properties of musk compounds cause their accumulation in the living and non-living components of the ecosystem, where they behave as persistent pollutants. The adsorption process is considered to be one of the most widely used separation and purification processes. The adsorption processes of a solution of sixteen synthetic fragrances took place with biochar and activated carbon. Solid phase microextraction (SPME) was used as a method for extracting analytes. Gas chromatography coupled with mass spectrometry (GC-MS) was applied for final analysis, time of flight analyzer was used as detector. The data were fitted with adsorption isotherms.
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44

Horák, Lukáš. "Energetické otázky v zemích Visegradské čtyřky". Master's thesis, Vysoká škola ekonomická v Praze, 2010. http://www.nusl.cz/ntk/nusl-72156.

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Main purpose of this thesis is to find out how self sufficient concerning the energy raw materials are countries within Visegrad group. Further purpose of my thesis is to analyse total primary energy supply, the structure of energy supply in countries of Visegrad group and its developments in last 4 decades. Furher I want to reveal how the structure of total primary energy supply and structure of electricity generation reflect the disponibility of raw materials in these countries and transformation of economics in the nineties. A sub-objective of my work will examine how countries of the Visegrad Four use the potential of renewable energy sources and how they support it.
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45

Moravčíková, Světlana. "Sledování účinnosti odstraňování léčiva z vody vybranými adsorbenty". Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2020. http://www.nusl.cz/ntk/nusl-409703.

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This diploma thesis deals with the efficiency of removal of pharmaceuticals from drinking water by selected adsorption materials. The first part describes sources of pharmaceuticals in drinking water and possible ways of contaminating water by pharmaceuticals. Subsequently, the pharmaceuticals most commonly found in the environment - nonsteroidal anti-inflammatory drugs, antibiotics, psychiatric drugs and sex hormones - are described in more detail. Next, the thesis describes the processes used for removal of pharmaceuticals. These are activated carbon adsorption, membrane processes and advanced oxidation processes. The last chapter of the theoretical part of the thesis deals with water treatment plants, where the technologies for removing drugs are already in operation. In the practical part of this thesis an experiment was performed and evaluated, for a purpose of comparing the efficiency of selected sorption materials in the removal of diclofenac from water. Filtrasorb F100, Bayoxide E33 and GEH were used.
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46

Bouchalová, Zuzana. "Sledování pesticidních látek ve zdroji úpravny vody Hrdibořice a možnost jejich odstranění". Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2017. http://www.nusl.cz/ntk/nusl-265569.

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The thesis discusses possible ways to reduce or completely eliminate pesticide compounds from drinking water that are produced at a water treatment plant Hrdibořice. The work is divided into theoretical and practical parts. The theoretical part lists kinds of pesticides that occur in water, how they are reduced or eliminated. Furthermore, this section describes the existing water treatment technologies at the Central Committee Hrdibořice, including water sources. In the practical part, pilot tests on two types of filters models with filtering bed of granular activated carbon (hereinafter GAU) were carried out. On the basis of information obtained from the literature and on findings from the pilot tests, designs of technological equipment for pesticide removal from drinking water at water treatment Hrdiborice were carried out. Next, cost estimates for the proposed variant solutions including operating costs were suggested.
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47

Kubínek, Martin. "Návrh mlýnského okruhu kotle PK 4S v Teplárně Košice". Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2015. http://www.nusl.cz/ntk/nusl-232164.

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The aim of this thesis is the proposal of a coal mill system and a combustion chamber for the boiler PK 4S situated in Košice CHP station with regard to transition to the new fuel. This proposal is focused on the elimination of NOx emissions. The calculation is based on required parameters of the boiler and declared characteristic of the new fuel. The proposal of the coal mill system includes three roller mills working in closed circuit with direct blowing. One of the mills serves as a reserve in case of failure. Dimensions of the dry bottom combustion chamber are proposed considering the applied primary measures to reduce NOx emissions so that the temperature at the end of the furnace would not be higher than maximal allowed temperature 1200 °C.
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48

Cerrón-Palomino, Rodolfo. "Max Uhle: “descubridor” del Chipaya". Pontificia Universidad Católica del Perú, 2012. http://repositorio.pucp.edu.pe/index/handle/123456789/102967.

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Kubinová, Michaela. "Ostravskou krajinou". Master's thesis, Vysoké učení technické v Brně. Fakulta architektury, 2014. http://www.nusl.cz/ntk/nusl-216084.

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50

Šíblová, Daniela. "Mikropolutanty ve zdrojích vod a možnosti jejich odstranění". Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2018. http://www.nusl.cz/ntk/nusl-372284.

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The diploma thesis deals with micro-fuels in drinking water sources and their subsequent removal. In the thesis mainly pesticides and pharmaceuticals are described. The reader is first introduced to the most common pesticides occurring in water and their consumption. Drugs are described in a similar context. In addition, there are practical studies on the occurrence, degradation and removal of micro-pollutants from water. The final thesis is a laboratory experiment dealing with the removal of salicylic acid from water by filtration through the filtration material Bayoxide E33 and activated carbon. The thesis describes the procedure and results of the experiment.
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