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Problem 4.40 Sequential Distillation A liquid mixture containing 30.0 mole% benzene (B), 25.0% toluene (T), and...

Problem 4.40 Sequential Distillation A liquid mixture containing 30.0 mole% benzene (B), 25.0% toluene (T), and the balance xylene (X) is fed to a distillation column. The bottoms product contains 98.0 mole% X and no B, and 85.5% of the X in the feed is recovered in this stream. The overhead product is fed to a second column. The overhead product from the second column contains 91.0% of the B in the feed to this column. The composition of this stream is 94.0 mole% B and the balance T. Write three balances and use one constraint for the performance of Still 1 to solve for the following quantities for a process feed (n1) of 100.0 mol/h. First Still Bottoms flow rate (n2) = mol/h. Overhead fow rate (n3) = mol/h. Benzene mole fraction in overhead (X3B) = .Toluene mole fraction in overhead (X3T) = .

Still 2 Write three balances and use one constraint for the performance of Still 2 to solve for the following quantities for a process feed (n1) of 100.0 mol/h. Second Still . Overhead from second still (n5) = mol/h. Bottoms from second still ( n4) = mol/h . Benzene mole fraction in bottoms from second still (X4B) = . Toluene mole fraction in bottoms from second still (X4T) =. question part Recovery. Calculate the percentage of B in the process feed that is recovered in the overhead of the second distialltion column = %. Calculate the percentatge of T in the process feed that is recovered in the bottoms of the second distillation column = %.

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