Sökning: "circulating fluidized beds"
Visar resultat 1 - 5 av 18 avhandlingar innehållade orden circulating fluidized beds.
1. Fluid Dynamics of the Bottom Bed of Circulating Fluidized Bed Boilers
Sammanfattning : 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. LÄS MER
2. Nitrous Oxide Emission from Circulating Fluidized Bed Combustion
Sammanfattning : 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. LÄS MER
3. Gas mixing in circulating fluidised bed risers
Sammanfattning : .... LÄS MER
4. Fluid Dynamics of the Transport Zone of Circulating Fluidized Beds - with Application to Boilers
Sammanfattning : 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. LÄS MER
5. Reduction of the N2O Emission from Fluidized Bed Combustion by Afterburning
Sammanfattning : 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. LÄS MER