Page 250 - Separation process engineering
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Figure 6-2. Distillation column for matrix analysis
Figure 6-3. General stage in column
The unknown vapor compositions, y and y i.j+1 , can be replaced using the equilibrium expressions
i,j
(6-2)
where the K values depend on T and p. If we also replace x and x i,j-1 with
i,j
(6-3a,b)
where and i,j-1 are the liquid component flow rates, we obtain
i,j
(6-4)
For each component, this equation can be written in the general form
(6-5)
The constants A, B, C, and D are easily determined by comparing Eqs. (6-4) and (6-5).
j
j
j
j
