QUESTION 2 Fresh oilseeds having 25 wt% solute and 1 wt% solvent is to be leached at a rate of 2000 kg/hr with pure solvent in a countercurrent leaching cascade. One kg of solvent is used per kg of feed. The overflow does not have any inert entrainment. If 85% of the solute is to be recovered in the overflow, calculate the composition and flowrate of the outlet product and determine the number of ideal stages required. Underflow (100 kg), slurry Solvent (kg) Free-Oil seed (kg) 67.2 67.1 66.93 66.58 66.26 65.75 65.33 64.39 63.77 63.23 61.54 32.8 29.94 28.11 25.06 23.62 20.9 19.07 16.02 14.13 12.87 9.61 Oil (kg) 0 2.96 4.96 8.36 10.12 13.35 15.6 19.59 22.1 23.9 28.85

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