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). (Intervento presentato al convegno 8th World Congress of Chemical Engineering tenutosi a Montreal (CAN) nel August 23–27, 2009).
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.