The three-stage extractor shown in Figure 8.44 is used to extract the arnine from a fluid consisting of 40 wt% benzene (B) and 60 wt% trimethylamine (T). The solvent (water) flow to stage 3 is 5,185 kg/h and the feed flow rate is 10,000 kg/h. On a solvent-free basis V1 is to contain 76 wt% T and L3 is to contain 3 wt% T. Determine the required solvent flow rates S1 and S2 using an equilateral-triangle diagram. Equilibrium data are given in Exercise8.14.

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Solvent Stage 2 Stage 1 Stage 3 Feed S2