Sökning: "SO3"

Visar resultat 1 - 5 av 14 avhandlingar innehållade ordet SO3.

  1. 1. Experimental and Modeling Studies of Sulfur-Based Reactions in Oxy-Fuel Combustion

    Författare :Daniel Fleig; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; SO3; acid dew-point; coal combustion; oxy-fuel; sulfur; flue gas recycle; corrosion; Carbon capture and storage; H2SO4; SO2;

    Sammanfattning : Oxy-fuel combustion is a technology for CO2 capture that is suitable for large-scale, coal-fired power plants. In this system, the combustion air is replaced by a mixture of O2 and recycled flue gases, so as to enrich for CO2 in the flue gas. LÄS MER

  3. 2. The Fate of Sulfur during Oxy-Fuel Combustion

    Författare :Daniel Fleig; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; pulverized coal combustion; oxy-coal; SO3; Oxy-fuel; SO2; sulfur;

    Sammanfattning : Oxy-fuel combustion, where air is replaced by O2 and recycled flue-gas to enrich combustion products, is one of the main CO2 capture technologies suitable for large-scale coal-fired power plants. The changed combustion conditions in oxy-fuel combustion influences the sulfur chemistry, which has recently been the subject of increased attention due to the importance of sulfur species in corrosion and flue-gas cleaning issues. LÄS MER

  4. 3. Fundamentals of NH3-SCR and SOx chemistry over copper zeolite for the control of NOx and greenhouse gas (N2O) emissions

    Författare :Joonsoo Han; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; DeNOx; Cu SSZ-13; NH3-SCR; N2O; EATS; SO3; ammonium nitrate; SO2;

    Sammanfattning : The release of N2O over Cu-zeolite was investigated due to the critical contribution it makes to the atmosphere as one of the greenhouse gases (GHGs). An exhaust after-treatment system (EATS) for heavy-duty vehicles that uses Cu/SSZ-13 as the selective catalyst reduction (SCR) catalyst experiences not only a variety of flow, temperature and chemical conditions but is also exposed to various resulting contaminants. LÄS MER

  5. 4. Surface Reactivity and Electronic Structure of Metal Oxides

    Författare :Anneli Önsten; Ulf Karlsson; Anne Borg; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; oxides; surfaces; defects; cuprous oxide; zinc oxide; magnetite; water; OH; sulfur dioxide; photoelectron spectroscopy; scanning tunneling microscopy; Material physics with surface physics; Materialfysik med ytfysik;

    Sammanfattning : The foci of this thesis are the metal oxides Cu2O, ZnO and Fe3O4 and their interaction with water and sulfur dioxide (SO2). The intention is to study SO2-induced atmospheric corrosion on a molecular level. All studies are based on photoelectron spectroscopy (PES) and scanning tunneling microscopy (STM) measurements. LÄS MER

  7. 5. Groundwater defluoridation by natural minerals : Understanding the process of fluoride removal from drinking water sources in Tanzania

    Författare :Vivian Kimambo; Prosun Bhattacharya; Felix Mtalo; Jyoti Prakash Maity; Jan Hoinkis; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Fluoride removal; Groundwater; Natural minerals; Adsorption isotherms; Batch- and Column Experiments; Kinetics and thermodynamics; Drinking water quality; Sustainability; Kuondolewa kwa fluoride; Maji ya chini ya ardhi; Madini ya asili; isotherms za majaribio ya adsorbenti; Majaribio ya Kundi- na Safu; Kinetics na thermodynamics; ubora wa maji ya kunywa; Uendelevu; Fluoridavlägsnande; Grundvatten; Naturliga mineraler; Batch- och kolonnförsök; Adsorptionsisotermer; Kinetik och termodynamik; Dricksvattenkvalitet; Hållbarhet; Mark- och vattenteknik; Land and Water Resources Engineering;

    Sammanfattning : Fluoride (F-) concentration in drinking water is one of the water quality parameters in countries with high concentrations in groundwater sources. Natural minerals have shown considerable effectiveness in F- removal. LÄS MER