Data Correlations for Mass Transfer Rate

There are two ways of correlating experimental data from ALRs. First, the hydrodynamic point of view suggests that the movement of the fluid in the reactor determines its overall behavior; the gas superficial velocity is therefore the more appropriate independent variable. Second, the thermodynamic point of view is based on a consideration of energy balance, a more global approach to the system. This will lead to correlation of the phenomena in the system as a function of the energy input. Indeed, it is easier to compare mass transfer coefficients in ALRs with those in conventional reactors when the data are presented as a function of the total power input (both mechanical and pneumatic) per unit volume of the medium (34) (Fig. 30).

Figure 31 shows data for mass transfer coefficients as a function of specific power input (149). References and geometric characteristics can be seen in Table 5.

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