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Bed Agglomeration Behavior In A Bubbling Fluidized-Bed Combustor, Ehsan Ghiasi
Bed Agglomeration Behavior In A Bubbling Fluidized-Bed Combustor, Ehsan Ghiasi
Electronic Thesis and Dissertation Repository
Agglomeration is a major operational problem during the combustion of biomass containing a high amount of alkali compounds. The agglomerate formation is mainly due to the presence of alkali elements in biomass ashes that form low-melting compounds in the combustion.
In the first part of this project, the critical amount of liquid that would lead to a severe agglomeration/de-fluidization was studied and determined in a lab scale bubbling fluidized bed (BFB) heated at elevated temperatures. To simulate the biomass ashes, various percentages of KCl and KCl-K2SO4 compounds at eutectic composition were mixed with silica sand as the …
Effect Of Temperature And Successive Sprays On Liquid Distribution In Fluidized Beds, Liliana Andrea Pardo Reyes
Effect Of Temperature And Successive Sprays On Liquid Distribution In Fluidized Beds, Liliana Andrea Pardo Reyes
Electronic Thesis and Dissertation Repository
Liquid injection in gas-solid fluidized beds is used in several industrial processes including food additive production, manufacturing of fertilizers, intermediate processing of pharmaceutical capsules and oil refining (i.e., Fluid CokingTM and Fluid Catalytic Cracking (FCC)). Good quality in the liquid distribution on the fluidized particles is fundamental in these processes either to ensure uniformity in the formation of desirable agglomerates, or to minimize their formation when undesirable. In the Fluid Coking process, for example, improving the liquid distribution and minimizing agglomerate formation will result in increasing the overall yield of the process and avoid operability problems.
A new experimental …