Environmental Engineering Reference
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Oil and spices phase
O il and spices
Mixture: oil,
vinegar &
spices
Shake
Settle
Vinegar
Vinegar and spices phase
Mixing
F
Equilibrium
Figure 3.26 Salad dressing recipe, Example 3.5.
Pure vinegar
y A i
V i
y A o
Tie-line
V o
F
O o
O i
Pure oil
Pure spices
x A o
z A o
x A i
Figure 3.27 Oil, vinegar, and spices phase diagram, Example 3.5.
3.6
Binary feed mixtures
Referring to the generic separation schematic (Figure 3.28), assume that it represents a
single stage of an equilibrium-based process for the separation of a binary feed mixture.
The assumption of equilibrium has two effects. First, the details of the flow and/or
concentrations within the stage are not of interest.
Second, streams L and V (exiting
Control
volume
V , y 1
x 0
F ,
L , x 1
Figure 3.28 Generic binary feed separation stage for an equilibrium-based process.
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