Sökning: "chemical equilibrium model calculations"

Visar resultat 1 - 5 av 35 avhandlingar innehållade orden chemical equilibrium model calculations.

  1. 1. Quantitative equilibrium calculations on systems with relevance to copper smelting and converting

    Författare :Bo Björkman; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Assessment of silicate systems; model for liquid silicates; lead silicates; iron silicates; cuprous silicates; quantitative equi¬librium calculations; emf measurements; Gibbs free energy; cup¬rous sulphide; dicalcium ferrite; wüstite-calcia solid solution; copper smelting and converting;

    Sammanfattning : The present thesis gives a summary of results obtained through theoretical and experimental studies of systems with relevance to copper smelting and converting.Many chemical elements are involved in the copper production pro­cesses and a detailed experimental study would be very time- consuming and expensive. LÄS MER

  3. 2. Thermodynamic Properties of CO2 Mixtures and Their Applications in Advanced Power Cycles with CO2 Capture Processes

    Författare :Hailong Li; Jinyue Yan; Umberto Desideri; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Thermodynamic property; vapour liquid equilibrium; density; equation of state; interaction parameter; CO2 mixtures; evaporative gas turbine; chemical absorption; oxy-fuel combustion; cost evaluation; CO2 capture and storage; Chemical engineering; Kemiteknik;

    Sammanfattning : The thermodynamic properties of CO2-mixtures are essential for the design and operation of CO2 Capture and Storage (CCS) systems. A better understanding of the thermodynamic properties of CO2 mixtures could provide a scientific basis to define a proper guideline of CO2 purity and impure components for the CCS processes according to technical, safety and environmental requirements. LÄS MER

  4. 3. Equilibrium studies of ternary aluminium(III) hydroxo complexes with ligands related to conditions in natural waters

    Författare :Lars-Olof Öhman; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; aqueous solution; binary and ternary hydroxo complexes of Al3 ; carbonic acid; citric acid; phenolic ligands; emf-titrations; equilibrium analysis; model calculations towards natural waters;

    Sammanfattning : The thesis is a summary and discussion of eight papers. During the last decades, precipitation has become increasingly acidic due to the extensive use of fossil fuels. In areas of poorly buffered bedrocks, e.g. LÄS MER

  5. 4. Modeling the influence of magnesium from alternative raw materials on the chemistry of Portland cement clinker

    Författare :Erik Viggh; Rainer Backman; Dan Boström; Bo Björkman; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Thermodynamic modeling; process modeling; Portland cement; clinker; periclase; magnesium oxide; alite; Scheil calculation; solid solutions; Physical Chemistry; fysikalisk kemi;

    Sammanfattning : The methods used in this thesis work were a combination of computational and modeling based laboratory experiments.Thermodynamic process modeling of the cement clinker process offers a tool for evaluating how changes in raw materials and process parameters affect the clinker quality. LÄS MER

  7. 5. Statistical Mechanical Studies of Aqueous solutions and Biomolecular Systems

    Författare :Fernando Luis Barroso Da Silva; Beräkningskemi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; highly charged macromolecules; dielectric discontinuity; dissociation constant; Tanford-Kirkwood model; protein mutation; electrostatic interactions; chemical potential; titration; biomolecules; computer simulations; radial distribution function; electrolyte solutions; continuum model.; Theoretical chemistry; quantum chemistry; Teoretisk kemi; kvantkemi;

    Sammanfattning : This thesis is concerned with theoretical studies of aqueous solutions and biomolecular systems. Part of the present work is to understand equilibrium solvent and solute properties, while the other part is to study processes that occur in these solutions. LÄS MER