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Separation Process Engineering: Includes Mass Transfer Analysis, Third Edition by Phillip C. Wankat

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G. Computer Simulation Problems

G1. We wish to separate a mixture of pyridine (C5H5N) and water, which forms a homogeneous azeotrope, by using extractive distillation using bisphenol-A (C15H16O2) as the solvent. When finished, the system will look similar to Figure 8-13 with the water as the A product and the pyridine as the B product. The feed to column 1 is 200 kmol/h of a liquid at 80°C and 1.0 atm. The feed is 30 mol% pyridine and 70 mol% water. The makeup solvent is pure bisphenol-A at 1.0 atm and 100°C, and the recycle solvent is also cooled to 100°C with a heat exchanger operating at 1.0 atm. We want to produce a water product in D1 99.0 mol% water or slightly higher, and a pyridine product in D2 98.0 mol% pyrdine or slightly higher. Use ...

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