Selaus nimekkeen mukaan kokoelmassa 215 Teknillinen kemia
Viitteet 54-73 / 127
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Impacts of Time and Temperature Gradient on the Morphology and Chemical Composition of Superheater Ash Deposits
(Åbo Akademi University, 02.02.2024)The work presented in this thesis focuses on the effect of a temperature gradient on the local composition and morphology of ash deposits formed on heat exchanger tubes of power boilers. Cross-sections of superheater ... -
Improvement of wet and dry web properties in papermaking by controlling water and fiber quality
(Åbo Akademi - Åbo Akademi University, 08.11.2013) -
Improving the competitiveness of electrolytic Zinc process by chemical reaction engineering approach
(Åbo Akademi - Åbo Akademi University, 18.02.2014)This doctoral thesis describes the development work performed on the leachand purification sections in the electrolytic zinc plant in Kokkola to increase the efficiency in these two stages, and thus the competitiveness of ... -
Initial Stages of Alkali Salt Induced High Temperature Corrosion Mechanisms : Experimental studies using a combination of chronoamperometry, scanning electron microscopy, X-ray photoelectron spectroscopy and time-of-flight secondary ion mass spectrometry
(Åbo Akademi - Åbo Akademi University, 24.05.2019)Various environmental problems, such as global warming, are related to the extensive use of fossil fuels. To solve these environmental problems, several renewable energy resources (RES) to substitute fossil fuels have drawn ... -
Input designs for identification of Ill-conditioned multivariable systems
(Åbo Akademi - Åbo Akademi University, 28.10.2016)Identification of an industrial system is generally a costly and complex process. Making an identification procedure efficient enough is an ongoing demand. Typically, designing the excitation for ill-conditioned and ... -
Intensification of hemicellulose hot-water extraction from spruce wood by parameter tuning
(Åbo Akademi - Åbo Akademi University, 22.05.2015)The growing population on earth along with diminishing fossil deposits and the climate change debate calls out for a better utilization of renewable, bio-based materials. In a biorefinery perspective, the renewable biomass ... -
Introduktionen av kärnkraften i Finland
(Åbo Akademis förlag - Åbo Akademi University Press, 14.08.2009) -
Ionic liquid mediated biomass deconstruction: from analysis challenges to fermentable sugars
(Åbo Akademi - Åbo Akademi University, 22.09.2014)Ionic liquids, ILs, have recently been studied with accelerating interest to be used for a deconstruction/fractionation, dissolution or pretreatment processing method of lignocellulosic biomass. ILs are usually utilized ... -
Leadership in repetitively innovative mature companies
(Åbo Akademi - Åbo Akademi University, 27.03.2009) -
Liquid transportation and distribution during (re)wetting : impact on coated papers in printing
(Åbo Akademi - Åbo Akademi University, 25.01.2013)In many industrial applications, such as the printing and coatings industry, wetting of porous materials by liquids includes not only imbibition and permeation into the bulk but also surface spreading and evaporation. By ... -
Mathematical modeling of laboratory scale three-phase fixed bed reactors
(Åbo Akademi - Åbo Akademi University, 04.10.2013)- -
Membrane Separations, Extractions and Precipitations in Aqueous Solutions for CO2 Mineralisation
(Åbo Akademi - Åbo Akademi University, 11.10.2019)The global carbon dioxide (CO2) emissions have been growing rapidly since the industrial revolution starting in the 18th century. This has led to increasing CO2 concentrations in the atmosphere, which in turn heats up the ... -
Methyl and ethyl chloride synthesis in microreactors
(Åbo Akademi - Åbo Akademi University, 19.09.2014)Methyl chloride is an important chemical intermediate with a variety of applications. It is produced today in large units and shipped to the endusers. Most of the derived products are harmless, as silicones, butyl rubber ... -
Mizoroki-Heck cross-coupling - Palladium based catalysts and operation modes
Acta technologiae chemicae Aboensia : 2021 A/5 (Åbo Akademi University, 16.12.2021)Present market trends in the sector of fine chemicals along with the need for rapid commercialization and less expensive production technologies boosts extensive research in this area. Mass-production of fine chemicals ... -
Model-based estimation of liquid flows in the blast furnace hearth and taphole
(Åbo Akademi - Åbo Akademi University, 11.10.2013)This thesis presents a set of methods and models for estimation of iron and slag flows in the blast furnace hearth and taphole. The main focus was put on predicting taphole flow patterns and estimating the effects of various ... -
Modeling and analysis of blast furnace drainage
(Åbo Akademi University, 02.10.2020)The blast furnace is the prevailing unit process for iron-making in the steelmaking process and the present growing global demand for steel leads to higher requirements set on the efficiency and productivity of the process. ... -
Modeling of burden distribution in the blast furnace
(Åbo Akademi - Åbo Akademi University, 27.06.2016)The blast furnace is the main ironmaking production unit in the world which converts iron ore with coke and hot blast into liquid iron, hot metal, which is used for steelmaking. The furnace acts as a counter-current reactor ... -
Modelling the super-equilibria in thermal biomass conversion : applications and limitations of the constrained free energy method
VTT Science (Online) : 92 (VTT Technical Research Centre of Finland Ltd, 28.05.2015)- -
Molecular modeling of asymmetric induction in heterogeneously catalyzed hydrogenation of the C=O bond
(Åbo Akademi - Åbo Akademi University, 29.10.2010)Modifiering av metallytor med starkt adsorberade kirala organiska molekyler är eventuellt den mest relevanta teknik man vet i dag för att skapa kirala ytor. Den kan utnyttjas i katalytisk produktion av enantiomeriskt rena ... -
Monomers from vegetable oil feedstock : kinetics, catalysis and thermal risk
Acta technologiae chemicae Aboensia : 2021 A/3 (Åbo Akademi University & Institut National des Sciences Appliquées de Rouen, 09.07.2021)Polyurethanes are among the most important polymers in our everyday life, they are industrially produced via the reaction of polyols and di-isocyanates. This process present multiple severe drawbacks such as high toxicity ...