Flow diagram extractor phases

To use the flooding point diagram, first it is necessary to decide whether the drops produced in the extractor are circulating or oscillating. The mean diameter di,2 (see Eq. 9.1) is used for the characteristic drop size. If the flow rate ratio is known from the thermodynamic design, the superficial velocities of both phases can be determined at the flooding point. The minimum column cross-sectional area and diameter necessarily follows directly from the superficial velocity at the flooding point with Eq. 9.19. 

What are the flow rates and compositions ofthe products, and how many equilibrium extractor stages are required to meet the solute reduction specification if the feed rate is 90 kmol/h and the solvent rate is 50 kmol/h The phase equilibrium diagram in Figure 11.4 may be used for this system. 

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