|
|
Design of modifications of steam drum design for increased pressure
Vince, Tomáš ; Vincour, Dušan (referee) ; Naď, Martin (advisor)
This bachelor´s thesis deals with control and design strength calculation of a steam drum of an industrial boiler for combustion of the air and amonia mixture. Brief introduction to steam boilers is performed at the beginning of thesis, followed by more detailed description of a nitrid acid plant steam boiler located in chemical company DUSLO a. s. Steam drum calculated in this thesis is part of the mentioned boiler. Importance and different functions of steam drum are subsequently explained and control strength calculation according to CSN EN 13445 is performed using computing software Virtual Vessel Design. Calculation results are compared with results according to old german code AD Merkblatt, which was originally used for strength calculation of the steam drum in question.
|
|
|
Thermal calculation of steam boiler
Růžička, Tomáš ; Lisý, Martin (referee) ; Baláš, Marek (advisor)
The topic of this thesis is the thermal calculation of steam boiler with natural gas fuel. The first part is describing technical characteristic and parametres of the boiler. The main part of this thesis is the thermal calculation of the boiler. The following part deals with determination of steam amount and steam parametres for blowing through pipes of the boiler.
|
|
| |
|
|
Grate Boiler for Wood Chips and Coal Combustion
Lauš, Ladislav ; Kohout, Přemysl (referee) ; Lisý, Martin (advisor)
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.
|
|
|
Biomass Steam-Boiler
Szabó, Gergely ; Brázdil, Marian (referee) ; Lisý, Martin (advisor)
This bachelor’s thesis is a professional research dealing with a biomass steam boiler. The main aim of the thesis is the description of the structure, the function of individual parts and the regulation of the boiler. The first part of the thesis is devoted to boilers in general, presents their fuels, focuses on solid fuel-fired boilers and describes the steam generator of boilers. The second part deals with a specific biomass steam boiler, describes its main parts and discusses the regulation circuits of the boiler.
|
|
|
Steam boiler for biomass and sand 92,5t/h
Špiláček, Michal ; Lisý, Martin (referee) ; Skála, Zdeněk (advisor)
This master’s thesis is dealing with design of steam boiler for wood chips. Wood chips are considered as biomass and so the steam boiler is considerate to enviroment. Main purpose of this work is calculation of size and number of water/steam heating surfaces so the boiler can produce steam with required parametres of temperature, pressure and amount.
|
|
|
Emissions of medium pressure steam boilers for gaseous fuel
Zavadil, Jan ; Milčák, Pavel (referee) ; Šnajdárek, Ladislav (advisor)
The aim of this the Bachelor Thesis is a description of a medium steam boiler for gas fuels, fuel's emissions created during the burning process of natural gas and following evaluation of measured pollutants in 5 years of operation. First part of the thesis describes types of steam boilers and most important parts of it. Following a brief comparison of burners for gas and liquid fuels and pollutants created during the burning process of natural gas and their impact on the environment. The last part focuses on measurements of pollutants in real device and a review of produced pollutants created during the long-term operation.
|
|
|
Steam gas boiler design
David, Josef ; Bursa, Robert (referee) ; Baláš, Marek (advisor)
The diploma thesis deals with the design of a steam gas boiler with a steam output of 50 t/h. The required steam output parameters are a temperature of 425 °C and a pressure of 3,6 MPa. After a short theoretical introduction, combustion stoichiometry is performed. Subsequently, the dew point, boiler efficiency and the amount of fuel supplied to the boiler are calculated. On the basis of further thermal calculations, a dimensional design of the combustion chamber and other heat exchange surfaces is created. The proposed drum boiler consists of three strokes. At the end of the work, control calculations are performed. A design drawing of the boiler is created from the resulting parameters.
|
|
|
Support Technologies of Steam Boiler
Uhříček, Michal ; Křemínský, Pavel (referee) ; Lisý, Martin (advisor)
The thesis deals with the layout design of a steam boiler burning RDF and the design of its supporting technologies with regard to design practice. In the thesis are modelled 1st - 4th stroke, followed by the flue gas cleaning, feed tank with pumps, flue gas recirculation routes and air ducts. The boiler is denied by a steel structure with platforms and placed in the boiler room. Based on the designed air, flue gas and feedwater routes, an aerodynamic and hydraulic calculation is performed. Using pressure drop, combustion air fan, flue gas fan and recirculation fan are designed. Based on the hydraulic calculation, the feed pumps are designed.
|
|
|
Effects of hydrogen addition to natural gas on steam boiler operating parameters
Kocman, Lukáš ; Skála, Zdeněk (referee) ; Baláš, Marek (advisor)
This work deals with the influence of hydrogen addition to natural gas on the parameters of steam boiler operation. In the first part of the work, a steam boiler for natural gas is designed, which is then recalculated for natural gas with a volume concentration of hydrogen in the range of 5–50 %. Calculations for individual concentrations were performed in the Mathcad program and were placed in the appendices. Finally, the results are summarized and commented.
|
guest ::
