A cross flow extraction system is being used to extract furfural from water into methyl
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A cross flow extraction system is being used to extract furfural from water into methyl

A cross flow extraction system is being used to extract furfural from water into methyl-isobutyl ketone (MIBK) at 25oC. The 150 kg/min of aqueous feed contains 0.11 wt% furfural. We desire a 90.0% recovery of the furfural that enters the system in the aqueous feed. The entering solvent stream contains 0.03 wt% furfural in MIBK. 

Assume flow rates of the aqueous raffinate streams and the extract streams are constant. Equilibrium data is given in Table 1. If the flow rate of each solvent stream is 50.0 kg/min, how many equilibrium stages are required?

a. Solve graphically

b. Solve each stage analytically.

Hint
ManagementIn Engineering, an equilibrium stage often takes place in a batch-wise manner. At these stages of equilibrium, the pressures and temperatures of one phase stop changing. Although change is still taking place at this stage, the rate at which for example, a liquid evaporates, is the same as the rate at which it condenses....

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