Heat and mass transfer in three phase fluidized bed containing high density particles at high gas velocities

Within the present range of parameters studied, the presence of solid particles decreased the gas holdup as well as the interfacial area of contact between gas and liquid, while both the heat and mass transfer coefficients increased several times compared to the two phase (liquid-gas) values by a factor ranging from 2 to 5 depending on the solid contents and the gas superficial velocity. Applications of the present results in the design and operation of multiphase reactors were highlighted.