CFB risers reactors have been proposed for their favorable contact between solid and gas phase connected to their capacity to process high and rate of gas and high particulate solid flow. Unfortunately, in these conditions relevant solid to solid interactions occur, resulting in a highly non ideal flow that affects the reactor performances. Also the better computational fluid dynamic (CFD) codes are difficult to set in similar cases, resulting in non accurate predictions. The availability of experimental data should help to set CFD model parameters or to select different models, but data are difficult to manage. To improve data availability, empirical correlations have been carried out in this work to obtain experimental estimation of pressure time series along the riser as a function of the main operating conditions, i.e. gas velocity and solid mass flux.
AN EMPIRICAL MODEL TO PROVIDE PRESSURE VERSUS TIME ALONG A HIGH INTENSIVE RISER
SESTI OSSEO, Libero;
2008
Abstract
CFB risers reactors have been proposed for their favorable contact between solid and gas phase connected to their capacity to process high and rate of gas and high particulate solid flow. Unfortunately, in these conditions relevant solid to solid interactions occur, resulting in a highly non ideal flow that affects the reactor performances. Also the better computational fluid dynamic (CFD) codes are difficult to set in similar cases, resulting in non accurate predictions. The availability of experimental data should help to set CFD model parameters or to select different models, but data are difficult to manage. To improve data availability, empirical correlations have been carried out in this work to obtain experimental estimation of pressure time series along the riser as a function of the main operating conditions, i.e. gas velocity and solid mass flux.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
