|
| |
|
|
Possibilities of reprocessing of the glycol and glycerol waste into suitable materials
Hýža, Bohumil ; Bednařík, Karel (referee) ; Kizlink, Juraj (advisor)
At the beginning of the thesis is summarized biodiesel production and its world production. There is more developed biodiesel production in the Czech Republic and in the European Union and some European legal regulations and standards for biodiesel. Also described herein is a composition of biodiesel and the description of the technology of its production. In the theoretical section summarizes the physical and chemical properties of glycerol and there is also summarized the traditional use of glycerol as food, explosives, etc. There are also new procedures that were performed in the experimental part of the thesis. Then, here are the proposed new procedures for processing waste glycerol and glycol, which were conducted in the experimental part of the thesis. There are described the ion exchange properties of the cation exchangers and also properties of salts generated by neutralization of NaOH in the waste glycerol with organic acids and CO2. There is also described wood protection, properties of ethylene glycol as coolant and properties of boroglycerols and boroglycols as protection for wood and mechanism of their preparation. Then there is described a mechanism of dehydration of glycerol to acrolein and options which can perform the synthesis. In the experimental part, the pH of waste glycerol was measured and then was measured the amount of NaOH in the waste glycerol. There is also desribed cleaning of waste glycerol from NaOH using acidic cation exchange resins on columns, or by neutralization with oleic acid, lactic acid and CO2. Further syntheses were performed glycerol borate and ethylene glycol borate. Water amount in ethylene glycol and methanol with water amount in glycerol were found by distillation. Then were prepared boroglycol and boroglycerol. By the amount resulting from the amount of reaction water were observed reaction conditions H3BO3, Na2B4O7•10 H2O and glycerol. At the end was carried out experimental dilution resulting boroglycerol and boroglycol by ethanol, methanol, TMB. Finally, the diluted boroglycerol was deposited on wood. Dehydration of glycerol to acrolein under the catalytic action of KHSO4 was performed. The results are given all the results and discussed the possibility of using the knowledge gained in this work in the industry. In conclusion, there are listed the economic comparison using waste glycerol and crude oil as a raw material and also charts the development of oil prices in 40 years since 1970, and graph of the price of waste glycerol. There is also discussed technological applicability of the methods used in practice.
|
|
|
Possibilities of reprocessing of glycerol layer from the manufacture of bionaphta
Hýža, Bohumil ; Bednařík, Karel (referee) ; Kizlink, Juraj (advisor)
The aim of this thesis was to introduce and apply the possibilities of using waste glycerol from biodiesel production and partly waste low-stiffen coolant from cars that could be applied in industry. At the beginning of the thesis is summarized biodiesel production and its world production. There is more developed biodiesel production in the Czech Republic and in the European Union and some European legal regulations and standards for biodiesel. Also described herein is a composition of biodiesel and the description of the technology of its production. In the theoretical section summarizes the physical and chemical properties of glycerol and there is also summarized the traditional use of glycerol as food, explosives, etc. There are also new procedures that were performed in the experimental part of the thesis. There are described the ion exchange mechanism, ion exchange resin properties and the properties of the acids and salts generated by neutralization with NaOH contained in the waste glycerol. Also is described herein the wood protection and properties of ethylene glycol coolants and properties of boroglycerol and boroglycol as protection for wood and mechanism of their preparation. Next is described the mechanism of dehydration of glycerol to acrolein and options which can perform the synthesis. In the experimental part, the pH of waste glycerol was measured, then was measured the exact amount of NaOH in the glycerol. There is also desribed cleaning of waste glycerol from NaOH using acidic cation exchange resins on columns, or by neutralization with oleic acid, lactic acid and CO2. Further syntheses were performed glycerol borate and ethylene glycol borate. Water amount in ethylene glycol and methanol with water amount in glycerol were found by distillation. Then were prepared boroglycol and boroglycerol. By the amount resulting from the amount of reaction water were observed reaction conditions H3BO3, Na2B4O7•10 H2O and glycerol. At the end was carried out experimental dilution resulting boroglycerol and boroglycol by ethanol, methanol, TMB. Finally, the diluted boroglycerol was deposited on wood. Dehydration of glycerol to acrolein under the catalytic action of KHSO4 was performed. The results are given all the results and discussed the possibility of using the knowledge gained in this work in the industry. In conclusion, there are listed the economic comparison using waste glycerol and crude oil as a raw material and also charts the development of oil prices in 40 years since 1970, and graph of the price of waste glycerol.
|
|
|
PPension - technological phase coarse upper construction
Řihák, Pavel ; Henek, Vladan (referee) ; Henková, Svatava (advisor)
The thesis is focused on construction srubového pension. It deals with issues of selected technological part of the project, which are: technical report biotic pests of wood, wood protection, technological process timber harvester, log walls, ceilings, roof, site facilities, the construction schedule, naazení machines, inspection and test plan, safety and health protection at work.
|
|
|
Opětovné využití stavebních dřevěných konstrukcí pro výrobu nábytku
Sedláčková, Petra
Main topic of this thesis is processing of already used wood, that can still be used. The aim is to show how this waste is further processed, treated and used for further production. Thesis is primarily focused on technological processing of this material and the subsequent creation of the final product. Thesis also include design of furniture inserted into the attic interior.
|
|
|
Návrh dřevěného altánu
Hašová, Jiřina
The bachelor thesis deals with the proposal of a wooden pavilion, which will be placed in the park in Lipník nad Bečvou. The work is divided into two parts - theoretical and practical. The theoretical block is described place possible implementation; there are also explained concepts such as urbanism, green, public space, street furniture, etc. It is important to mention construction materials, fasteners, wood preservatives, wood modification and ergonomics. The practical part includes a specific proposal and its possible implementation is completed visualization. The result is therefore a proposal to implement a wooden gazebo design to meet all the requirements of users, safety, durability, comfort and overall aesthetic appeal.
|
|
| |
|
| |
|
| |
|
| |
guest ::
