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Problems with sulphur and silicon in biogas
Holub, Radim ; Jecha, David (referee) ; Beňo, Zdeněk (advisor)
The main objective of this bachelor’s thesis is a description of a composition of biogas (BG) and contained undesirable components, which include especially sulphur and silicon compounds. In an introductory chapter is given a definition of the biogas, principle of its creation, chemical composition and a share of undesirable components. In following chapters are described single undesirable components, their properties and negative impact on parts of equipment using biogas. The following are the methods to reduce the critical concentration values of these components or their complete removal from biogas. In the thesis are also given practical solutions to eliminate these undesirable components.
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Bio energocentrum
Vitoulová, Alena ; Michele, Ladislav (referee) ; Myslín, Jiří (advisor) ; Čuprová, Danuše (advisor)
The bachelor thesis was developed as a project for building construction based on the studio work of second semester. Campus Bio energy center is a komplex of four interconnected buildings, divided according to their functions - The building to the public , production greenhouse, building for staff, equipment for the production of biogas. The structural system of the building material is reinforced concrete , steel and wood. The idea of urban and architectural design is the simplicity of shapes , functionality and aptness plan.
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Influence of RES to power system in Czech Republic
Vánišová, Michaela ; Bartošík, Tomáš (referee) ; Mastný, Petr (advisor)
This text deals with renewable energy sources in terms of working on the electricity network of the Czech Republic. There is the definition of renewable energy sources in the work. Next there are discussed the basic information about connecting to the distribution network. In two parts, there is mentioned and discussed the issue of operation of renewable energy resources and their effects in terms of the electricity network. The last chapter is focused on the possibility of further utilization of renewable energy sources because of their natural energy.
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Design of optimal mixing of large-scale digesters
Bradáč, Antonín ; Bělohradský, Petr (referee) ; Zejda, Vojtěch (advisor)
The aim of this diploma thesis is an optimal method of mixing of the digester with consideration to the uniform mixing of the whole volume, ensuring the quality process conditions for the anaerobic fermentation and the maximum yield and quality of the produced biogas. First chapters describe the basic design parameters, general calculations and the principles for design of individual types of mixers, supplemented by practical examples of mixing large capacity tanks. The work introduces the problem of sludge formation at the sewage treatment plant with an emphasis on sludge treatment and the processes which take place inside the fermenter. Various types of design of anaerobic sludge stabilization digester were introduced. Also ways of their operation, which are necessary for the quality of the fermentation, were presented. In the next chapters, various ways of mixing high-capacity digester tanks and experience from the operation of selected treatment plants were described. According to the theoretical research part of this thesis, several types of mixing equipment was designed for the experimental digestion tank built at the Institute of Process Engineering which is used for research work with mixers. Measurement of the selected pneumatic mixing method was performed on the experimental tank and the findings were evaluated.
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Household fermentor design
Švec, Jan ; Jecha, David (referee) ; Houdková, Lucie (advisor)
The aim of this thesis is to design a fermentation unit specially adjusted for household operating. Unit processes kitchen and garden biodegradable waste with requirements of low acquisition costs, operating costs and demands of service. Benefits of this unit are production of biogas, which will be utilized in household, and processed of biodegradable waste to nutritious manure. The first part of the work is aimed on description of anaerobic fermentation process and summary of operating conditions. The main part deals with potential of household and garden biodegradable waste for production of biogas and design of fermentation unit. Proposals for biogas utilization and economy of whole project are mentioned.
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Design and Implementation of Modular Bioreactor with Use of Wasted Heat
Peterka, Michal ; Bajko, Jaroslav (referee) ; Baxant, Petr (advisor)
The aim of the thesis is to extend the existing project of further use of waste heat from biodegradation processes and to improve bioreactor design. The first part summarizes the theoretical knowledge of the use of biomass and waste resources. The practical part is initially focused on the development of the bioreactor structure, the following part deals with the use of heat pipes for heat dissipation and the last chapter is about heating the fermenter and collecting the generated gas. Designed construction of the new bioreactor proved to have more advantages than the previous type. Heat pipes have a great potential for heat dissipation from the bioreactor, next steps should lead to a system of interconnected heatpipes and controlled heat dissipation. Biogas consumption initially seemed like a good idea, but the processes within the fermenter are more complex than expected. After a short time, the processes inside the fermenter have stopped, therefore this path of research will require further exploration.
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Production of electric energy from biomass
Buřil, Tomáš ; Škvařil, Jan (referee) ; Moskalík, Jiří (advisor)
The objective of this bachelor´s thesis is to summarize possibilities of energy use of biomass, especially a production of electric energy. The thesis describes and shows theoretical principles of used processes, as well as technical devices for getting energy. Among used processes belong combustion of biomass, thermic gasification and anaerobic fermentation connected with production of biogas. Electric energy is in these cases produced in combination with thermic energy, a process like this is called cogeneration. In the second part, technical solution of a biogas station in Vidochov is described. There are also stated reasons for its building, as well as an economic return of the investment.
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Energy use of biomass
Mandelík, Ladislav ; Brázdil, Marian (referee) ; Baláš, Marek (advisor)
The main purpose of this bachelor thesis is the research of different types of biomass, the survey of the technologies for electric power and heat production and the comparison of the present use of biomass in the Czech Republic. The thesis is concerned on the biomass definition, its parts and attributes. Then the technologies for energy use of biomass and biomass categories are mentioned. The last part of the thesis is devoted to the large power plant units in the Czech Republic using biomass and combined production of heat and electricity.
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