Search for dissertations about: "fluidized beds"

Showing result 6 - 10 of 61 swedish dissertations containing the words fluidized beds.

  2. 6. Hydrodynamics, Erosion and Heat Transfer in Pressurized Fluidized Beds

    Author : Jan Wiman; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; hydrodynamics erosion; heat transfer; tubes; fluidized bed; gas flow; pressurized fluidized bed; bubble;

    Abstract : Measurements of hydrodynamics, local tube erosion and local instantaneous bed-to-tube heat transfer were carried out in a cold, pressurized, fluidized bed with different horizontal tube banks. The influence of pressure, fluidization velocity, particle size and tube-bank geometry was studied. READ MORE

  4. 7. Bed expansion and slumping of fluidized beds

    Author : Sven B Andersson; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; bed expansion; sintering; slumping; internals; modelling; puffing technique; thermal behaviour; fluidization regimes; Fluidized bed boilers;

    Abstract : .... READ MORE

  5. 8. SOLIDS MIXING IN BUBBLING FLUIDIZED BEDS

    Author : Erik Sette; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; fluid-dynamic scaling; Solids mixing; lateral dispersion; solids cross-flow;

    Abstract : For solid fuels, thermochemical conversion processes such as combustion and gasification are especially suitable to be carried out in fluidized bed units because of the relatively high mixing rates, fuel flexibility and the possibility to use active bed material to enhance process efficiency. Mixing of fuel is important to ensure complete conversion and reduced emissions of unburnt material. READ MORE

  6. 9. Fluid Dynamics of the Transport Zone of Circulating Fluidized Beds - with Application to Boilers

    Author : Wennan Zhang; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; fluid dynamics; particle flux probe; momentum probe; circulating fluidized bed boilers; circulating fluidized beds; particle flow pattern; particle concentration probe; spectrum analysis;

    Abstract : The particle suspension flow structure in circulating fluidized beds (CFB) was studied with emphasis on the layer of downflowing particles at the wall. The main experiments were carried out in the furnace of the 12 MWth CFB boiler of 1.7x1.7 m cross-section, and in a two-dimensional CFB cold bed of 0. READ MORE

  7. 10. Interconnected fluidized beds for chemical-looping combustion with inherent CO₂-separation

    Author : Eva Johansson; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; net solids flux; interconnected fluidized beds; CO2 separation; chemical-looping combustion; gas leakage;

    Abstract : .... READ MORE