A MODEL FOR GAS-FLOW IN JET SPOUTED BEDS

A model of general application that is based on the definition of stre amlines and that is in agreement with the bed geometry has been propos ed in order to describe the gas flow in a jet spouted bed in conical c ontactors. The model quantifies the dispersion in the direction of the streamlines by using a characteristic modulus. The-validity of the mo del has been experimentally proven on the basis of the measurement and analytical correlation of gas velocity profiles at different radial a nd longitudinal positions in the contactor. and of the application of the stimulus response technique for the calculation of the residence t ime distribution function.