A mixture of 60 mol% propylene and 40 mol% propane at a flow rate of 100 lbmol/h

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A mixture of 60 mol% propylene and 40 mol% propane at a flow rate of 100 lbmol/h and at 25?C and 300 psia is to be separated with a polyvinyltrimethylsilane polymer (see Table 14.9 for permeabilities). The membrane skin is 0.1 pm thick, and spiralwound modules are used with a pressure of 15 psia on the permeate side. Calculate the material balance and membrane area in m2 as a function of the cut (fraction of feed permeated) for:

(a) Perfect-mixing flow pattern.

(b) Crossflowpattern.

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