Search for dissertations about: "bed temperature dependence"

Showing result 1 - 5 of 6 swedish dissertations containing the words bed temperature dependence.

2. 1. Nitrous Oxide Emission from Circulating Fluidized Bed Combustion

   Author : Lars-Erik Åmand; Chalmers tekniska högskola; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; air supply dependence; fluidized beds; homogeneous heterogeneous reactions; fluidized-bed boilers; bed temperature dependence; N2O emissions; circulating fluidized-bed boilers; gas-concentration profiles;

   Abstract : In the present thesis N2O results are presented from several measurement projects on two commercial circulating fluidized bed (CFB) boilers. Traditional parameter studies have been carried out, as well as test programs where various nitrogen-containing species were injected into the furnace or gas-concentration profiles in the combustion chamber were measured. READ MORE

4. 2. Displacement Washing in the Sulfate Pulp Mill

   Author : Gunnar Eriksson; Chalmers tekniska högskola; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; metal ions; Kraft pulp; models; diffusion; filter cakes; sorption; temperature; lignin; fibers; washing; lime mud; chemical recovery; displacement; pulp washing;

   Abstract : Displacement washing is an operation in which it is possible to wash solid-phase particles with a minimum of water. In a sulfate pulp mill, the main application is the pulp washing, but lime mud washing also occurs in the chemical recovery. The washing consumes a great deal of water. READ MORE

5. 3. Lime Mud Reburning. Properties and Quality of the Lime Produced

   Author : Charlotta Hanson; Chalmers tekniska högskola; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES;

   Abstract : It is of utmost importance that the white liquor used in the digester of a sulphate pulp mill is of high quality. The white liquor is prepared in the causticizing plant, through causticizing of the sodium carbonate in the green liquor. READ MORE

6. 4. Anisotropic mechanical behaviors and microstructural evolution of thin-walled additively manufactured metals

   Author : Cheng-Han Yu; Johan Moverare; Ru Lin Peng; Joe Kelleher; Linköpings universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; hot tensile testing; slow strain rate tensile testing; creep; anisotropy; crystallographic texture evolution; deformation twinning; Varmdragprov; Dragprov med låg töjningshastighet; kryp; anisotropi; kristallografisk textur; deformationstvillingar;

   Abstract : Additive manufacturing (AM), also known as 3D printing, is a concept and method of a manufacturing process that builds a three-dimensional object layer-by-layer. Opposite to the conventional subtractive manufacturing, it conquers various limitations on component design freedom and raises interest in various fields, including aerospace, automotive and medical applications. READ MORE

7. 5. Catalytic Steam Pyrolysis of Biomass for Production of Liquid Feedstock

   Author : Efthymios Kantarelis; Weihong Yang; Tobias Richards; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Pyrolysis; Catalytic Cracking; Catalytic Upgrading; Biomass to Liquids; Bio-fuels; Πυρόλυση; Καταλυτική διάσπαση; Καταλυτική αναβάθμιση; Biomass to Liquids; Βιοκαύσιμα; Pyrolys; Katalytisk Krackning; Katalytisk uppgradering; Biomass to Liquids; biobränslen; Chemical Engineering; Kemiteknik; Energy Technology; Energiteknik; Teknisk materialvetenskap; Materials Science and Engineering;

   Abstract : The current societal needs for fuels and chemical commodities strongly depend on fossil resources. This dependence can lead to economic instabilities, political problems and insecurity of supplies. READ MORE