A novel configuration of a three phase internal loop airlift reactor was proposed. The riser of the reactor is divided in two sections: a gas-liquid contact section at the top and a liquid-solid contact section at the bottom. Solids particles were fluidized at the bottom of the liquid-solid section by liquid circulation. The main advantage compared with classic airlift or three-phase fluidized bed is the possibility to avoid stress on particles associated with interference with bubbles. Experiments with silica sand (325 m diameter) were carried out in order to characterize the hydrodynamic of the airlift. The basic tool was represented by pressure measurement. The influence of superficial gas velocity, overall solids hold-up and sparger height has been assessed. A theoretical analysis was proposed to derive simple design criteria.

A Novel Three-Phase Airlift Reactor without Solid Circulation

OLIVIERI, GIUSEPPE;MARZOCCHELLA, ANTONIO;SALATINO, PIERO
2009

Abstract

A novel configuration of a three phase internal loop airlift reactor was proposed. The riser of the reactor is divided in two sections: a gas-liquid contact section at the top and a liquid-solid contact section at the bottom. Solids particles were fluidized at the bottom of the liquid-solid section by liquid circulation. The main advantage compared with classic airlift or three-phase fluidized bed is the possibility to avoid stress on particles associated with interference with bubbles. Experiments with silica sand (325 m diameter) were carried out in order to characterize the hydrodynamic of the airlift. The basic tool was represented by pressure measurement. The influence of superficial gas velocity, overall solids hold-up and sparger height has been assessed. A theoretical analysis was proposed to derive simple design criteria.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/352735
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