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Finding Feasible Energy Efficient Complex Column Networks - Case Study

Finding Feasible Energy Efficient Complex Column Networks - Case Study. Seon B. Kim LPPD, University of Illinois at Chicago 2009 – 08 - 26. Strategy. Finding feasible simple and complex column design specification for ternary or quaternary mixtures

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Finding Feasible Energy Efficient Complex Column Networks - Case Study

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  1. Finding Feasible Energy Efficient Complex Column Networks- Case Study Seon B. Kim LPPD, University of Illinois at Chicago 2009 – 08 - 26

  2. Strategy • Finding feasible simple and complex column design specification for ternary or quaternary mixtures • Finding feasible column network for quaternary mixture • Find energy efficient network configuration

  3. Testing Networks Network 1 Network 2 Total Vapor Flowrate = 3.9247 Total Vapor Flowrate = 3.4321 Network 3 Network 4 Total Vapor Flowrate = 4.5288

  4. Find Feasible design of Network 1-1 1-1 08/26/2009 ----------------- Design Description ------------------ Column Number - 1 CASE - 4.6 Component : Pentane/Hexane/Heptane/Octane Feed Composition : 0.25 0.25 0.25 0.25 Constant alpha : 13.99 5.4 2.17 1 Distillate Purity : 0.65 0.34 0.00934 0.0006517 ASPEN PRODUCT : 0.6499 0.3457 0.00422 7.397e-05 Bottom Purity : 1e-005 0.19375 0.4004 0.40584 ASPEN PRODUCT : 1.008e-5 0.19018 0.4036 0.40620 Feed Flow Rate : 1 ----------------------- RESULT ------------------------ minimum BPD : 0.00014998 BPET of Intersect : 5.1736 Reflux Ratio : 2.2374 Reboil Ratio : 2.0233 Distillate Flow : 0.38461 Bottom Flow : 0.61539 Vapor Flowrate : 1.2451 Rectifying Tray # : 3.2772 Stripping Tray # : 10.1067 Total Tray # : 13.3839 (2) (1) (4) (3)

  5. Find Feasible design of Network 1-2 1-2 08/26/2009 ----------------- Design Description ------------------ Column Number - 2 CASE - 3.4 Component : Hexane/Heptane/Octane Feed Composition : 0.19375 0.40041 0.40584 Constant alpha : 5.4 2.17 1 Distillate Purity : 0.32836 0.67163 0.00001 ASPEN PRODUCT : 0.32230 0.67646 0.00124 Bottom Purity : 1e-006 0.009999 0.99 ASPEN PRODUCT : 2.095e-06 0.010846 0.98915 Feed Flow Rate : 0.61539 ----------------------- RESULT ------------------------ minimum BPD : 4.2147e-008 BPET of Intersect : 1.634 Reflux Ratio : 1.5844 Reboil Ratio : 3.72 Distillate Flow : 0.36312 Bottom Flow : 0.25227 Vapor Flowrate : 0.93845 Rectifying Tray # : 38.9416 Stripping Tray # : 8.0981 Total Tray # : 47.0397

  6. Find Feasible design of Network 1-3 1-3 08/26/2009 ----------------- Design Description ------------------ Column Number - 3 CASE - 3.2 Component : Pentane/Hexane/Heptane Feed Composition : 0.65042 0.34022 0.0093544 Constant alpha : 13.99 5.4 2.17 Distillate Purity : 0.99 0.0099999 1e-007 ASPEN PRODUCT : 0.67333 0.3266471 1.7239e-05 MidProduct Purity : 0.005 0.99 0.005 ASPEN PRODUCT : 6.0808e-05 0.34863481 0.6512 Bottom Purity : 1e-007 0.0099999 0.99 ASPEN PRODUCT : 1.2753e-09 0.0026466 0.9773 Feed 1 Flowrate : 0.38461 Feed 2 Flowrate : 0.36312 ----------------------- RESULT --------------- minimum BPD : 9.4977e-009 4.5625e-009 BPET of Intersect : 12.431 3.64299 Reflux Ratio : 2.3631 Reboil Ratio : 171.1845 Distillate Flow : 0.37125 MidProduct Flow : 0.36919 Bottom Flow : 0.0072935 Vapor Flowrate : 1.2485 Section 1 Tray # : 4.1894 Section 2 Tray # : 7.2971 Section 3 Tray # : 9.261 Section 4 Tray # : 3.8721 Total Tray # : 24.6196 Total Vapor Flowrate = 3.4321

  7. Find Feasible design of Network 2-1 2-1 08/26/2009 (2) (2) Hexane ------------------- Design Description ---------------- Column Number - 1 CASE - 4.2 Component : Pentane/Hexane/Heptane/Octane Feed Composition : 0.25 0.25 0.25 0.25 Constant alpha : 13.99 5.4 2.17 1 Distillate Purity : 0.99 0.0098 0.000191 9e-006 ASPEN PRODUCT : 0.99002 0.0099 5.09e-05 6.05e-07 Bottom Purity : 1e-005 0.33115 0.33439 0.33445 ASPEN PRODUCT : 1.29e-06 0.33110 0.33443 0.33445 Feed Flow Rate : 1 --------------------- RESULT -------------------------- minimum BPD : 2.8909e-005 BPET of Intersect : 10.0132 Reflux Ratio : 7.3645 Reboil Ratio : 2.8257 Distillate Flow : 0.25252 Bottom Flow : 0.74748 Vapor Flowrate : 2.1122 Rectifying Tray # : 3.8265 Stripping Tray # : 15.7426 Total Tray # : 19.5692 (1) (4) (4) Octane (3) (1) Pentane (3) Heptane

  8. Find Feasible design of Network 2-2 2-2 08/26/2009 (2) Heptane ----------------- Design Description ------------------ Column Number - 2 CASE - 3.3 Component : Hexane/Heptane/Octane Feed Composition : 0.33115 0.33439 0.33446 Constant alpha : 5.4 2.17 1 Distillate Purity : 0.7 0.299 0.001 ASPEN PRODUCT : 0.6998 0.2997 0.0004 Bottom Purity : 1e-005 0.36617 0.63382 ASPEN PRODUCT : 5.42e-05 0.36557 0.63437 Feed Flow Rate : 0.74748 ------------ RESULT ------------ minimum BPD : 7.7429e-008 BPET of Intersect : 2.3054 Reflux Ratio : 2.3726 Reboil Ratio : 3.0278 Distillate Flow : 0.35361 Bottom Flow : 0.39388 Vapor Flowrate : 1.1926 Rectifying Tray # : 7.3206 Stripping Tray # : 11.5411 Total Tray # : 18.8617 (1) Hexane (3) Octane

  9. Find Feasible design of Network 2-3 2-3 08/26/2009 ----------------- Design Description ------------------ Column Number - 3 CASE - 3.1 Component : Pentane/Hexane/Heptane/Octane Feed Composition : 0.7 0.299 0.001 Constant alpha : 5.4 2.17 1 Distillate Purity : 0.99 0.0099999 1e-007 ASPEN PRODUCT : 0.931 0.0694631 7.7569e-08 MidProduct Purity : 0.005 0.99 0.005 ASPEN PRODUCT : 0.14767 0.8503750 0.00195262 Bottom Purity : 1e-008 0.00999999 0.99 ASPEN PRODUCT : 7.4e-13 0.00494796 0.99505204 Feed 1 Flowrate : 0.35361 Feed 2 Flowrate : 0.35361 ----------------------- RESULT ------------------------ minimum BPD : 0.00059083 6.781e-005 BPET of Intersect : 4.4931 1.3328 Reflux Ratio : 1.4921 Reboil Ratio : 2.4672 Distillate Flow : 0.2475 MidProduct Flow : 0.24997 Vapor Flowrate : 0.61993 Bottom Flow : 0.25 Section 1 Tray # : 7.0494 Section 2 Tray # : 10.4056 Section 3 Tray # : 15.0196 Section 4 Tray # : 7.0601 Total Tray # : 39.5347 Total Vapor Flowrate = 3.9247

  10. Find Feasible design of Network 3-1 3-1 08/26/2009 (2) (2) Hexane ------------------- Design Description ---------------- Column Number - 1 CASE - 4.2 Component : Pentane/Hexane/Heptane/Octane Feed Composition : 0.25 0.25 0.25 0.25 Constant alpha : 13.99 5.4 2.17 1 Distillate Purity : 0.99 0.0098 0.000191 9e-006 Bottom Purity : 1e-005 0.33115 0.33439 0.33445 Feed Flow Rate : 1 --------------------- RESULT -------------------------- minimum BPD : 2.8909e-005 BPET of Intersect : 10.0132 Reflux Ratio : 7.3645 Reboil Ratio : 2.8257 Distillate Flow : 0.25252 Bottom Flow : 0.74748 Vapor Flowrate : 2.11218 Rectifying Tray # : 3.8265 Stripping Tray # : 15.7426 Total Tray # : 19.5692 (1) (4) (4) Octane (3) (1) Pentane (3) Heptane

  11. Find Feasible design of Network 3-2 3-2 08/26/2009 (2) Heptane ----------------- Design Description ------------------ Column Number - 2 CASE - 3.2 Component : Hexane/Heptane/Octane Feed Composition : 0.4 0.25 0.35 Constant alpha : 5.4 2.17 1 Distillate Purity : 0.99 0.0099 0.0001 Bottom Purity : 1e-005 0.41278 0.58721 Feed Flow Rate : 1 ----------------------- RESULT ------------------------ minimum BPD : 0 BPET of Intersect : 3.6059 Reflux Ratio : 3.0011 Reboil Ratio : 2.7126 Distillate Flow : 0.40403 Bottom Flow : 0.59597 Vapor Flowrate : 1.6166 Rectifying Tray # : 5.7737 Stripping Tray # : 16.0665 Total Tray # : 21.8401 (1) Hexane (3) Octane

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