Selaus asiasanan mukaan kokoelmassa 2 Tekniikka
Viitteet 1-20 / 20
-
A set of models for optimization of gas distribution networks : A study in Process and Systems Engineering
(Åbo Akademi - Åbo Akademi University, 14.06.2019)Natural gas is a fossil fuel with a high potential to become the bridging fuel in the transition towards a sustainable future because of its lower share of carbon compared to oil and coal. A growing popularity of LNG, ... -
Carbonation of Mg(OH)2 in a pressurised fluidised bed for CO2 sequestration
(Åbo Akademi - Åbo Akademi University, 02.03.2012) -
Eddy break-up based models for industrial diffusion flames with complex gas phase chemistry
(Åbo Akademi - Åbo Akademi University, 11.12.1998)In this thesis, two types of models used in the CFD modeling of practical combustion devices with a turbulent flow are investigated. The models are applied to a number of test cases, but the goal of the investigations are ... -
Experimental and discrete element simulation studies of bell-less charging of blast furnace
(Åbo Akademi - Åbo Akademi University, 15.03.2013)This thesis presents an experimental study and numerical study, based on the discrete element method (DEM), of bell-less charging in the blast furnace. The numerical models are based on the microscopic interaction between ... -
Experimental and Numerical Studies of Burden Layers at Blast Furnace Charging
(Åbo Akademi - Åbo Akademi University, 21.10.2022)The blast furnace (BF) is the main production unit in the processing of iron ore to molten iron (“hot metal”) in the steelmaking industry. It is a large process with huge throughput and energy consumption, so even a slight ... -
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 ... -
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 ... -
Numerical and experimental optimization analysis of a jaw crusher and a bubble column reactor
(Åbo Akademi - Åbo Akademi University, 29.05.2019)More and more awareness is now raising in terms of sustainability of industrial processes. Thus the necessity to improve energy efficiency of diverse devices or simplify process schemes arises. Therefore, the importance ... -
Optimization of a steel plant utilizing converted biomass
(Åbo Akademi - Åbo Akademi University, 10.06.2016) -
Production and testing of magnesium carbonate hydrates for thermal energy storage (TES) application
(Åbo Akademi University, 18.06.2021)I denna avhandling ingår både forskning inom koldioxidavskiljning och lagring genom mineralisering (CCSM) (carbon capture and storage by mineralisation, CCSM) och produktion av dess slutprodukt, magnesiumkarbonathydrat ... -
Production of magnesium carbonates from serpentinites for CO2 mineral sequestration : optimisation towards industrial application
(Åbo Akademi - Åbo Akademi University, 17.12.2015)Global warming is one of the most alarming problems of this century. Initial scepticism concerning its validity is currently dwarfed by the intensification of extreme weather events whilst the gradual arising level of ... -
Production of Mg(OH)2 from Mg-silicate rock for CO2 mineral sequestration
(Åbo Akademi - Åbo Akademi University, 13.12.2012)Sequestration of carbon dioxide in mineral rocks, also known as CO2 Capture and Mineralization (CCM), is considered to have a huge potential in stabilizing anthropogenic CO2 emissions. One of the CCM routes is the ex ... -
Segregation of powder mixtures in silos with particular reference to dry mineral-based construction materials
(Åbo Akademi - Åbo Akademi University, 20.04.2012) -
Structural and operational optimisation : applications in energy systems
(Åbo Akademi - Åbo Akademi University, 14.12.2007)In this work mathematical programming models for structural and operational optimisation of energy systems are developed and applied to a selection of energy technology problems. The studied cases are taken from industrial ... -
Sustainable steelmaking by process integration
(Åbo Akademi - Åbo Akademi University, 28.11.2014)Environmental issues, including global warming, have been serious challenges realized worldwide, and they have become particularly important for the iron and steel manufacturers during the last decades. Many sites has ... -
Towards sustainable Iron- and steelmaking with economic optimization
(Åbo Akademi - Åbo Akademi University, 04.04.2014)The iron and steelmaking industry is among the major contributors to the anthropogenic emissions of carbon dioxide in the world. The rising levels of CO2 in the atmosphere and the global concern about the greenhouse effect ... -
Two process case Studies on energy efficiency, life cycle assessment and process scale-up
(Åbo Akademi - Åbo Akademi University, 11.01.2017) -
Utilization of steelmaking waste materials for production of calcium carbonate (CaCO3)
(Åbo Akademi - Åbo Akademi University, 10.10.2014)The steel industry produces, besides steel, also solid mineral by-products or slags, while it emits large quantities of carbon dioxide (CO2). Slags consist of various silicates and oxides which are formed in chemical ...