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What is the volumetric flow rate in L/h of Feed? What are the split fraction SF and split ratios SR for Propylene?

What is the volumetric flow rate in L/h of Feed? What are the split fraction SF and split ratios SR for Propylene?

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
Problem 1.1P
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What is the volumetric flow rate in L/h of Feed?

What are the split fraction SF and split ratios SR for Propylene?

 

The use e. All c. For a prox blems, tional sare 3 lists Those need r the aran- that im- -h as nvenient product degradation or undesirable agglomeration, a pilot- plant is necessary. Operations near the middle usually require laboratory data, while those near the bottom require pilot- plant tests. Feed, F (Sat'd liquid) T = 325 K P = 2027 kPa Sometimes Overhead vapor, OV Component kmol/h 163.3 108.9 272.2 Propylene Propane 1 90 150 Figure 1.16 Distillation of a propylene-propane mixture. points, they are traditionally separated by distillation. From Figure 1.16, it is seen that a large number of stages is needed and that the reflux and boilup flows are large. Accordingly, attention has been given to replacement of distillation with a more economical and less energy-intensive process. Based on the factors in Table 1.12, the characteristics in Table 1.13, and the list of species properties given at the end of $1.2, propose alternatives to Figure 1.16. Condenser, C CW Column with contacting plates Steam Reflux, R 2293 kmol/h Boilup 2575 kmol/h (Reflux drum Condensate Reboiler, R Distillate, D (Sat'd liquid) T-319.5 K P = 1931 kPa Component Propylene Propane Bottoms, B (Sat'd liquid) T-330.9 K P=2069 kPa Component Propylene Propane kmol/h 5.7 107.3 113.0 kmol/h 157.6 1.6 159.2
Transcribed Image Text:The use e. All c. For a prox blems, tional sare 3 lists Those need r the aran- that im- -h as nvenient product degradation or undesirable agglomeration, a pilot- plant is necessary. Operations near the middle usually require laboratory data, while those near the bottom require pilot- plant tests. Feed, F (Sat'd liquid) T = 325 K P = 2027 kPa Sometimes Overhead vapor, OV Component kmol/h 163.3 108.9 272.2 Propylene Propane 1 90 150 Figure 1.16 Distillation of a propylene-propane mixture. points, they are traditionally separated by distillation. From Figure 1.16, it is seen that a large number of stages is needed and that the reflux and boilup flows are large. Accordingly, attention has been given to replacement of distillation with a more economical and less energy-intensive process. Based on the factors in Table 1.12, the characteristics in Table 1.13, and the list of species properties given at the end of $1.2, propose alternatives to Figure 1.16. Condenser, C CW Column with contacting plates Steam Reflux, R 2293 kmol/h Boilup 2575 kmol/h (Reflux drum Condensate Reboiler, R Distillate, D (Sat'd liquid) T-319.5 K P = 1931 kPa Component Propylene Propane Bottoms, B (Sat'd liquid) T-330.9 K P=2069 kPa Component Propylene Propane kmol/h 5.7 107.3 113.0 kmol/h 157.6 1.6 159.2
Solution First, verify that the component feed and product flows in Figure 1.16 satisfy (1 1), the conservation of mass Table 1.14 compares properties taken mainly from Daubert and Danner [15). The only listed property that might be exploited is the dipole moment. Be cause of the asymmetric for ation of the double hond in propylene. its dipole moment is significantly greater than that of propane, mak- ing propylene a weakly pelar compound Operations that can exploit this difference are 1. Extractive distillation with a polar solvent such as furfural or an aliphatic nitrile that will reduce the volatility of propylene (Ref US Pater 2,588,056. March 4, 1952). 2. Adsorption with silica gel or a zeolite that selectively adsorbs propylene Ref. J.Am. Chem Soc. 72, 1153-1157 (1950) 3. Facilitated transport membranes using impregnated silver nitrate to carry propylene selectively through the membrane [Ref.: Recent Developments in Separation Science, Vol. IX. 173-195 (1986)| SUMMARY 1. Industrial chemical processes include equipment for sep- arating chemicals in the process feed(s) and/or species produced in reactors within the process. 2 More than 25 different separation operation Table 1.14 Comparison of Properties for Example 1.5 Property Propylene Molecular weight 42,081 8 van der Waals volume, m'/kmol van der Waals area, m²/kmol x 10 Acentric factor Dipole moment, debyes Radius of gyration, mx Normal melting point, K Normal boiling point, K Critical temperature, K Critical pressure, MPa 1010 0.03408 5.060 0.142 0,4 2.254 87.9 225.4 364,8 4.61 Propane 44.096 0.03757 5.590 0.152 0.0 2.431 85.5 231.1 369.8 4.25 related by material balances to individual SP and/or SR values. 8. Some operations, such as absorption, are capable of only 11. S McGra 12. D 13. k 14. P Gases 15. L New Y STU 1.1. engine 1.2. engine 1.3. they al 1.4. 1.5. can be 1.6. phases 1.7. V three di
Transcribed Image Text:Solution First, verify that the component feed and product flows in Figure 1.16 satisfy (1 1), the conservation of mass Table 1.14 compares properties taken mainly from Daubert and Danner [15). The only listed property that might be exploited is the dipole moment. Be cause of the asymmetric for ation of the double hond in propylene. its dipole moment is significantly greater than that of propane, mak- ing propylene a weakly pelar compound Operations that can exploit this difference are 1. Extractive distillation with a polar solvent such as furfural or an aliphatic nitrile that will reduce the volatility of propylene (Ref US Pater 2,588,056. March 4, 1952). 2. Adsorption with silica gel or a zeolite that selectively adsorbs propylene Ref. J.Am. Chem Soc. 72, 1153-1157 (1950) 3. Facilitated transport membranes using impregnated silver nitrate to carry propylene selectively through the membrane [Ref.: Recent Developments in Separation Science, Vol. IX. 173-195 (1986)| SUMMARY 1. Industrial chemical processes include equipment for sep- arating chemicals in the process feed(s) and/or species produced in reactors within the process. 2 More than 25 different separation operation Table 1.14 Comparison of Properties for Example 1.5 Property Propylene Molecular weight 42,081 8 van der Waals volume, m'/kmol van der Waals area, m²/kmol x 10 Acentric factor Dipole moment, debyes Radius of gyration, mx Normal melting point, K Normal boiling point, K Critical temperature, K Critical pressure, MPa 1010 0.03408 5.060 0.142 0,4 2.254 87.9 225.4 364,8 4.61 Propane 44.096 0.03757 5.590 0.152 0.0 2.431 85.5 231.1 369.8 4.25 related by material balances to individual SP and/or SR values. 8. Some operations, such as absorption, are capable of only 11. S McGra 12. D 13. k 14. P Gases 15. L New Y STU 1.1. engine 1.2. engine 1.3. they al 1.4. 1.5. can be 1.6. phases 1.7. V three di
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