# SOLN - SOLUTION MANUAL for SEPARATION PROCESS ENGINEERING...

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SOLUTION MANUAL for SEPARATION PROCESS ENGINEERING. Includes Mass Transfer Analysis 3 rd Edition (Formerly published as Equilibrium-Staged Separations ) by Phillip C. Wankat

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17 SPE 3 rd Edition Solution Manual Chapter 1 New Problems and new solutions are listed as new immediately after the solution number. These new problems in chapter 1 are: 1A3, 1A4, 1B2-1B4, 1D1. A2. Answers are in the text. A3. New problem for 3 rd edition. Answer is d. B1. Everything except some food products has undergone some separation operations. Even the water in bottles has been purified (either by reverse osmosis or by distillation). B2. New problem for 3 rd edition. Many homes have a water softener (ion exchange), or a filter, or a carbon water “filter” (actually adsorption), or a reverse osmosis system. B3. New problem for 3 rd edition. For example: the lungs are a gas permeation system, the intestines and kidney are liquid permeation or dialysis systems. B4. New problem for 3 rd edition. You probably used some of the following: chromatography, crystallization, distillation, extraction, filtration and ultrafiltration. D1. New problem for 3 rd edition. Basis 1kmol feed.  .4 kmole E .4 MW 46 18.4 kg 10.8 kg .6 kmol Water .6 MW 18 total 29.2 kg Weight fraction ethanol = 18.4/29.2 = 0.630 Flow rate = (1500 kmol/hr)[(29.2kg)/(1 kmol)] = 43,800 kg/hr.
18 Chapter 2 New Problems and new solutions are listed as new immediately after the solution number. These new problems are: 2A6, 2A9 to 2A16, 2C4, 2C8, 2C9, 2D1.g, 2.D4, 2D10, 2D13, 2D24 to 2D30, 2E1, 2F4, 2G4 to 2G6, 2H1 to 2H3. 2.A1. Feed to flash drum is a liquid at high pressure. At this pressure its enthalpy can be calculated as a liquid. eg. high LIQ F,P p F ref h T c T T . When pressure is dropped the mixture is above its bubble point and is a two-phase mixture (It “flashes”). In the flash mixture enthalpy is unchanged but temperature changes. Feed location cannot be found from T F and z on the graph because equilibrium data is at a lower pressure on the graph used for this calculation. 2.A2. Yes. 2.A4. 2.A6. New Problem. In a flash drum separating a multicomponent mixture, raising the pressure will: i. Decrease the drum diameter and decrease the relative volatilities. Answer is i. 2.A8. a. K increases as T increases b. K decreases as P increases c. K stays same as mole fraction changes (T, p constant) -Assumption is no concentration effect in DePriester charts d. K decreases as molecular weight increases 2.A9. New Problem. The answer is 0.22 2.A10. New Problem. The answer is b . 2.A11. New Problem. The answer is c . 1.0 .5 0 1.0 .5 0 x w Flash operating line y w Equilibrium (pure water) 2.A4 z w = 0.965

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19 2.A12. New Problem. The answer is b . 2.A13. New Problem. The answer is c . 2.A14. New Problem. The answer is a . 2.A15. New Problem. a. The answer is 3.5 to 3.6 b. The answer is 36ºC 2.A16. New Problem. The liquid is superheated when the pressure drops, and the energy comes from the amount of superheat.
• Spring '15
• Orders of magnitude, new problem, Tdrum

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