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D6.* Design a stripping column to remove carbon dioxide from water by heating the water and passing it countercurrently to a nitrogen stream in a staged stripper. Operation is isothermal and isobaric at 60.0°C and 1.0 atm pressure. Feed water contains 9.2 x 10-6 mole fraction CO₂ and flows at 100,000 lb/h. Entering nitrogen is pure and flows at 2500.0 ft³/h. Nitrogen is at 1.0 atm and 60.0°C. Outlet water concentration is 2.0 × 10−7 mole fraction CO₂. Ignore nitrogen solubility in water, and ignore water volatility. Equilibrium data are in Table 12-1. Use a Murphree vapor efficiency of 40.0%. Find the outlet vapor composition and the number of real stages needed.

D6.* Design a stripping column to remove carbon dioxide from water by heating the water and passing it countercurrently to a nitrogen stream in a staged stripper. Operation is isothermal and isobaric at 60.0°C and 1.0 atm pressure. Feed water contains 9.2 x 10-6 mole fraction CO₂ and flows at 100,000 lb/h. Entering nitrogen is pure and flows at 2500.0 ft³/h. Nitrogen is at 1.0 atm and 60.0°C. Outlet water concentration is 2.0 × 10−7 mole fraction CO₂. Ignore nitrogen solubility in water, and ignore water volatility. Equilibrium data are in Table 12-1. Use a Murphree vapor efficiency of 40.0%. Find the outlet vapor composition and the number of real stages needed.

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
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TABLE 12-1. Henry's law constants H for Eq. (12-3) for CO2, CO, and H₂S in water. H is in atm/mole fraction. T°C 0 LO 5 10 15 20 25 30 35 40 45 50 60 70 80 90 100 CO₂ 728 876 1040 1220 1420 1640 1860 2090 2330 2570 2830 3410 CO 35,200 39,600 44,200 48,900 53,600 58,000 62,000 65,900 69,600 72,900 76,100 82,100 84,500 84,500 84,600 84,600 H₂S 268 315 367 423 483 545 609 676 745 814 884 1030 1190 1350 1440 1480
Transcribed Image Text:TABLE 12-1. Henry's law constants H for Eq. (12-3) for CO2, CO, and H₂S in water. H is in atm/mole fraction. T°C 0 LO 5 10 15 20 25 30 35 40 45 50 60 70 80 90 100 CO₂ 728 876 1040 1220 1420 1640 1860 2090 2330 2570 2830 3410 CO 35,200 39,600 44,200 48,900 53,600 58,000 62,000 65,900 69,600 72,900 76,100 82,100 84,500 84,500 84,600 84,600 H₂S 268 315 367 423 483 545 609 676 745 814 884 1030 1190 1350 1440 1480
D6.* Design a stripping column to remove carbon dioxide from water by heating the water and passing it countercurrently to a nitrogen stream in a staged stripper. Operation is isothermal and isobaric at 60.0°C and 1.0 atm pressure. Feed water contains 9.2 x 10-6 mole fraction CO₂ and flows at 100,000 lb/h. Entering nitrogen is pure and flows at 2500.0 ft³/h. Nitrogen is at 1.0 atm and 60.0°C. Outlet water concentration is 2.0 × 10-7 mole fraction CO₂. Ignore nitrogen solubility in water, and ignore water volatility. Equilibrium data are in Table 12-1. Use a Murphree vapor efficiency of 40.0%. Find the outlet vapor composition and the number of real stages needed.
Transcribed Image Text:D6.* Design a stripping column to remove carbon dioxide from water by heating the water and passing it countercurrently to a nitrogen stream in a staged stripper. Operation is isothermal and isobaric at 60.0°C and 1.0 atm pressure. Feed water contains 9.2 x 10-6 mole fraction CO₂ and flows at 100,000 lb/h. Entering nitrogen is pure and flows at 2500.0 ft³/h. Nitrogen is at 1.0 atm and 60.0°C. Outlet water concentration is 2.0 × 10-7 mole fraction CO₂. Ignore nitrogen solubility in water, and ignore water volatility. Equilibrium data are in Table 12-1. Use a Murphree vapor efficiency of 40.0%. Find the outlet vapor composition and the number of real stages needed.
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