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|Type:||Artigo de evento|
|Title:||Dynamic Analysis Of Fluidized Bed Gasifier For Power Generation|
Farias Junior F.S.
Maciel Filho R.
|Abstract:||The fluidized bed gasifier (FBG) for biomass is characterized by the formation of a fluidized stream of biomass suspension in air. The biomass particles are mantained suspended together with inert particle (sand, ashes, alumina etc.) fluidized by a forced ascending air flow. The biomass is fed in reduced dimensions to allow the control of the fluidization process. The good contact between the biomass and air in the fluidized bed makes the energy and mass transfer process to be carried out easily along the gasifier length. A gasification zone is then formed in an autothermique process (800-900C) characterized by heterogeneous and homogeneous reactions. Two phases can be identified in the gasification zone of the equipment, to know, the phase of bubbles (gaseous phase) and the emulsion phase (solid phase). In the present work, a deterministic mathematical model was developed based on the mass and energy balance equations for both phases, taking into account the heterogeneous and homogeneous reactions in the gasification zone. From the detailed deterministic model, used as plant, random output data for process variables, such as temperatures (gas and solid phases) and component concentrations were obtained thought random input data generation. Multivariable probabilists models were developed to analyse the data obtained, as an alternative way to represent the system behaviour. Though variance analyses the statistical significance of the probability models for process variables were evaluated, looking for the degree of dispersion, correlation coefficient and hypotheses tests. © 2006 17th International Congress of Chemical and Process Engineering.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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