Search for dissertations about: "fluidized bed boiler"

Showing result 1 - 5 of 44 swedish dissertations containing the words fluidized bed boiler.

  2. 1. Fluid Dynamics of the Bottom Bed of Circulating Fluidized Bed Boilers

    Author : Anders Svensson; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; fluidized beds; circulating fluidized bed boilers; fluctuations; fluidization regimes; bottom bed; bed porosity; fluid dynamics; bubbling beds; circulating fluidized beds; non-slugging; bed expansion; particle concentration;

    Abstract : The fluid dynamic conditions in the furnace of a fluidized bed boiler influence the combustion and the production of harmful emissions. A substantial amount of the bed material in a circulating fluidized bed (CFB) boiler is present as a dense bubbling bottom bed. READ MORE

  4. 2. Reduction of the N2O Emission from Fluidized Bed Combustion by Afterburning

    Author : Lennart Gustavsson; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; chemical modelling; fuel injection; nitrous oxide; fluidized bed combustion; fluidized beds; afterburning; homogeneous heterogeneous reactions; N2O reduction; fluidized bed boiler; N2O emissions;

    Abstract : A method for reducing N2O emissions from fluidized bed combustion is presented and investigated. In contrast to flame combustion, fluidized bed combustion generates significant amounts of nitrous oxide (N2O) which are emitted to the atmosphere. READ MORE

  5. 3. Gas Mixing in a Circulating Fluidised Bed Boiler

    Author : Johan Sternéus; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; circulating fluidized bed; gas mixing; tracer; boiler; dispersion; scaling; turbulence; two-phase flow; fluidization;

    Abstract : The present thesis is a study on the gas-mixing behaviour in a circulating fluidised bed (CFB) boiler. The aim is to describe how gas is spread in different regions of a CFB furnace and to explain variations in the mixing rate under different operating conditions. READ MORE

  6. 4. Use of Bed Materials in Dual Fluidized Bed (DFB) Systems

    Author : Jelena Maric; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Bed material; Chemical looping reforming; Dual Fluidized Bed;

    Abstract : Dual Fluidized Bed (DFB) gasification is one alternative for the production of biofuels. In a DFB gasification process, the bed material plays a crucial role. Primary role of the bed material is to provide the heat needed for the gasification reaction. READ MORE

  7. 5. Dispersion of wood fuel in a stationary fluidized

    Author : Fredrik Niklasson; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; boiler; fluidized bed; solid mixing; lateral dispersion;

    Abstract : .... READ MORE