Search for dissertations about: "NITROGEN-OXIDES"

Showing result 1 - 5 of 127 swedish dissertations containing the word NITROGEN-OXIDES.

  2. 1. Oxy-Fuel Combustion - The Control of Nitrogen Oxides

    Author : Fredrik Normann; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; oxy-fuel; NOx; O2 CO2; combustion; emission; nitrogen oxides;

    Abstract : Oxy-fuel combustion is one of the main candidates for carbon dioxide capture from power plants. In oxy-fuel combustion, oxygen diluted with recycled flue gas oxidizes the fuel. The elimination of air-borne nitrogen generates a flue gas that mainly consists of carbon dioxide and water. READ MORE

  4. 2. Optimization of Pretreatment of Kraft Pulp with Nitrogen Oxides

    Author : Urban Öjteg; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Kappa number; lignins; Nitric acid; Magnesium; spent liquors; viscosity; softwood; oxygen bleaching; Nitrogen dioxide; Manganese; Oxygen; Nitrogen oxides; pretreatment; Kraft pulp;

    Abstract : Modified kraft pulp subjected to oxygen bleaching following pretreatment with 2% nitrogen dioxide for 140 min with the addition of oxygen resulted in low selectivity after subsequent oxygen bleaching. In contrast, pretreatment in the absence of oxygen removed more than 80% of the lignin after oxygen bleaching and still maintained high selectivity (kappa number less than 5 at viscosity 950 dm3/kg). READ MORE

  5. 3. Formation of Nitrogen Oxides during Combustion

    Author : Michaël Grimsberg; Avdelningen för kemiteknik; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : The formation of nitrogen oxides during combustion of coal is a complex process involving both homogeneous and heterogeneous reaction step. In this thesis HCN and NH3 are used as model compunds for the nitrogen containing pyrolysis products... READ MORE

  6. 4. Nonmethane hydrocarbons and nitrogen oxides in background air : long-range transport of precursors in relation to oxidant formation

    Author : Anne Lindskog; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : .... READ MORE

  7. 5. Atmosphere-surface exchange of nitrogen oxides and ozone

    Author : Alberto Rondón; Stockholms universitet; []
    Keywords : ;

    Abstract : .... READ MORE