Question: Complex Engineering Problem Consider a system for which you have been given the ternary diagram. Acetone ( A = solute), MIK ( S = solvent

Complex Engineering Problem

Consider a system for which you have been given the ternary diagram. Acetone (A= solute), MIK (S= solvent (100% pure)), Water (C = carrier).

Calculate the flow and composition of the extract and raffinate from:

1st cross-current stage, using a pure solvent flow of 70 kg/hr.

2nd cross-current stage, with an additional solvent flow of 30 kg/hr.

For the overall 2-stage cross-current system, find the:

overall recovery

overall concentration of combined extract streams

The objective now is to have a counter-current system so the raffinate leaving in the N^thstage, R_Nhas y_R= 0.015

Show the construction on the ternary diagram for the number of equilibrium stages to achieve y_RN= 0.015, given a solvent flow of 28 kg/hr.

Calculate the overall recovery and concentration of the extract stream.

Plot on the same axes the concentrations in the extract and raffinate streams.

Repeat the procedure using two counter current flow stages and find the overall recovery and concentration of the extract. Compare and discuss the results. Based on results, propose which operation (cross flow or counter flow) is suitable for the recovery of Acetone.

MIK + Acetone + water at 298.15K

Feed Flowrate = 99 kg/s

Feed composition:

% Acetone = 27

% Water = 73

Plot on LLE Ternary Diagram.

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