Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 10 of 10 for “"Bubbling Fluidized Bed"”.
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Hydrodynamic scaling and solids mixing in pressurized bubbling fluidized bed combustors
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1996.
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Co-gasification of biomass and plastic waste in a bubbling fluidized bed reactor
… LDPE and HDPE in the presence of three different bed materials, namely silica sand, olivine, and red mud. It was found that mixing the biomass with LDPE and HDPE increased hydrogen gas (H2) production. The Hydrogen gas concentration in the product gas increased slightly from 10% to 12% by volume …
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CPFD Modeling of a Novel Internally Circulating Bubbling Fluidized Bed for Chemical Looping Combustion
… uses ilmenite as the oxygen carrier and a novel fluidized bed design called the Plug Flow Internally-recirculating Reactor (PFIR). The PFIR consists of an annular bubbling fluidized region in which particles are circulated by angle jets through two reactive zones separated by baffles. The overall …
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Bubble Dynamics and Dense Phase Composition in 2-D Binary Gas-Solid Fluidized Bed
Gas-solid bubbling fluidized bed with binary particles is a potential candidate for performing the dry coal beneficiation process due to its advantages such as the ability to adjust separation density and the elimination of process water. A two-dimensional (2D) fluidized bed was used to study …
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Chemistry models for major gas species estimation and tar prediction in fluidized bed biomass gasification
The present work deals with the process of fluidized bed biomass gasification (FBBG), which is the thermochemical conversion of solid biomass into combustible synthetic gas using a fluidized bed. Fluidized bed gasifiers encounter high tar concentrations at the gasifier outlet necessitating …
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An Improved Biosolid Gasifier Model
… published chemical kinetic computer model for a fluidized-bed sewage sludge gasifier (Champion, Cooper, Mackie, & Cairney, 2014) was improved in this work based on limited experimental results obtained from a bubbling fluidized-bed sewage sludge gasifier at the MaxWest facility in Sanford, …
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Identification and Distribution Analysis of the Mid-phase in a Low-velocity Gas-solid Fluidized Bed
The intermediate phase in low-velocity gas-solid fluidized beds generally presents excellent gas-solid contact in the systems. However, no comprehensive understanding of this vital phase is available in the literature. Therefore, this study proposed a statistical method to identify this …
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Gasificación de lodos de estaciones depuradoras de aguas residuales urbanas (EDAR)
… of dried sewage sludge gasification in a bubbling fluidized-bed laboratory-scale plant under different gasification conditions is studied in this Ph. D. Thesis. The equivalence ratio (ratio of actual to stoichiometric air flow rate, ER) was varied from 0,2 to 0,4, temperature from 750ºC to …
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Development of CFD models applied to fluidized beds for waste gasification
Le but de ce projet est de développer un modèle CFD fiable pour étudier la dynamique des fluides d'un lit fluidisé en régime bullant pendant la gazéification de combustibles solides de récupération (CSR) triés à partir de déchets solides municipaux (DSM). La gazéification est un processus …