Selaus nimekkeen mukaan kokoelmassa 215 Teknillinen kemia, kemian prosessitekniikka
Viitteet 47-66 / 105
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Heat recovery solutions for a copper electrolysis refinery
(2023)This thesis was produced to provide Boliden Pori Refinery with a solution for how to utilize waste heat efficiently in their electrolysis plant. The project was presented to utilize heat pumps to recover heat from the ... -
Hydrocarbon conversion of long-chain paraffins : Role of metal(Pt, Ru, Ni) &influence of acid sites, structures and textural properties of solid catalysts
(Åbo Akademi, 2019)Hydroisomerization of long-chain hydrocarbons for the production of high quality branched fuel was studied due to their vast availability and product versatility. Most of these long-paraffins are cracked to obtain lower ... -
Hydrodeoxygenation of bio-oil model compounds using alumina, zirconia and carbon supported metal catalysts
(Åbo Akademi, 2018)Bio-oil is an attractive alternative to petroleum oil and important renewable source of energy and chemicals. Through hydrodeoxygenation (HDO) it can be transformed into transportation fuel by removal of oxygen. Because ... -
Hydrodeoxygenation of lignin-derived model compound isoeugenol over Fe-, Ni-, and Fe-Ni-supported on zeolites
(2021)As the world is transitioning away from fossil fuels, lignocellulosic biomass is scrutinized as a source of renewable fuels and chemicals. Political motivations and environmental concerns have increased the research in ... -
Hydrodeoxygenation of lignin-derived phenol compound isoeugenol over nickel- and cobalt based catalysts
(Åbo Akademi, 2019)The climate change has increased the need of renewable transportation fuels obtained from lignocellulosic biomass. Due to its high oxygen content and complex structure, catalytic hydrodeoxygenation (HDO) is needed to upgrade ... -
Hydrofobering av handark med ASA – Inverkan av stabiliseringsmedel i olika mäldtyper
(2022)Genom hela papprets historia har modifiering av papprets egenskaper varit av intresse. Ett sätt att modifiera egenskaperna är genom användning av olika tillsatsämnen. Exempelvis genom att tillsätta hydrofoberingsmedel som ... -
Hydrogen reduction of iron oxides : Experimental study
(2022)Steel is one of the modern world’s core pillars in engineering and construction materials, but the steel production causes large carbon dioxide emissions. The steel industry needs to reduce its carbon emissions to prevent ... -
Improved modeling of rotary momentum mass transport equipment
(Åbo Akademi, 2020)Pumps, compressors and turbines are vital parts of any process plant. Thus, accurate modeling of these machines is crucial for a dynamic process simulator, especially if the simulator is used for operator training. The ... -
Improvement of heat recovery in the paper industry
(Åbo Akademi, 2018)A significant part of the operational costs at pulp and paper mills come from energy costs of heating. One of the most energy consuming processes is the drying of paper in a paper machine. About 20 – 30 MW steam is used ... -
Inventory and management of process wastewater streams in a pharmaceutical production plant in Finland
(2021)Pharmaceuticals and their effects on the environment have become continually a more and more interesting topic. Even though only 2% of all European API (Active Pharmaceutical Ingredient) discharges are from the pharmaceutical ... -
Investigation of waste heat sources and their utilization in process industry
(2021)Waste heat is a commonly used term for such heat energy that is not utilized in the process but dissipates to the environment unused. Waste heat is a by-product which can be found in various streams exiting ... -
Kartläggning och förbättringsförslag för en barrfiberlinjes bruntvätt
(2022)I diplomarbetet undersöks barrfiberlinjens bruntvättseffektivitet vid UPM Kymmene Oy:s cellulosafabrik i Jakobstad. I samband med effektivitetstestet har även enkla och linjära optimeringsmodeller konstruerats för att ge ... -
Korrosion orsakad av delikvescent ZnCl2 i förbränning av sidoströmmar
(2023)Utnyttjande av biomassa och sidoströmmar i energiproduktionen är ett alternativ att minska användningen av fossila bränslen och öka självförsörjningen av energi. Egenskaperna hos olika biomassor och sidoströmmar varierar ... -
Laboratory studies of KOH – induced corrosion under conditions relevant to the air reactor in chemical looping combustion
(2023)Due to the gradual increase of the greenhouse effect, the emissions of CO2 need to be limited. In addition, as the concerns for air pollution increase, a clean combustion process becomes important. Chemical looping combustion ... -
Lignin Esters and Their Composites with PLA
(2023)Due to depleting resources for fuel and chemical production, new sustainable and renewable materials are needed. A potential material for this is lignin, which has been of interest for the past decades. Lignin is a complex ... -
Lipase catalyzed chemo-enzymatic epoxidation of fatty acids using ultrasound as a process intensification method
(2021)The recent trend in switching from fossil to renewable sources in the production of essential chemicals has revealed novel methods within the concept of green chemistry. This work focuses on the epoxidation of oleic acid ... -
Machine learning for predicting alkali salt induced high-temperature corrosion of superheater materials
(2021)Climate change due to human activities has caused a global desire to lower CO2 emissions in the hope of halting the increasing global temperature. For electricity generation, this means reducing the CO2 emissions by ... -
Measurement of electrostatic forces for in-line quality control of ceramic slip
(2021)In this master’s thesis, done in collaboration with Geberit in Ekenäs, the goal was to determine whether a new in-line measurement probe was suitable for monitoring and controlling the slip manufacturing process. The ... -
Methods for Researching the Stratification Phenomena and Parameters Effecting it in a Cavern Thermal Energy Storage
(2021)At the moment energy companies in Finland have invested in large scale thermal energy storage to improve the efficiency of their district heating systems. This means that energy that would otherwise have beenwastedis saved ... -
Modelling of Lyocell fibre production and technical analysis of solvent recovery concepts
(Åbo Akademi, 2020)Lyocell is a type of man-made cellulosic fibre that is produced via direct dissolution of dissolving pulp in a non-volatile amine oxide or ionic liquid. The dissolved pulp is regenerated into long fibre strings by extruding ...