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CHEN 4460 – Process Synthesis, Simulation and Optimization

Heat and Power Integration. CHEN 4460 – Process Synthesis, Simulation and Optimization Dr. Mario Richard Eden Department of Chemical Engineering Auburn University Lab Lecture No. 6 – Heat and Power Integration November 6, 2012. Example 1.

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CHEN 4460 – Process Synthesis, Simulation and Optimization

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  1. Heat and Power Integration CHEN 4460 – Process Synthesis, Simulation and Optimization Dr. Mario Richard EdenDepartment of Chemical EngineeringAuburn University Lab Lecture No. 6 – Heat and Power Integration November 6, 2012

  2. Example 1 • Given the stream information below, design the MER network Tmin = 10 oC

  3. Example 1 – Solution Tmin = 10 oC Temperature Driving ForceTH-ΔT

  4. Example 1 – Solution Tmin = 10 oC Temperature Driving ForceTH-ΔT

  5. Example 1 – Solution Tmin = 10 oC Temperature Driving ForceTH-ΔT

  6. Example 1 – Solution Tmin = 10 oC Temperature Driving ForceTH-ΔT

  7. Example 1 – Solution Tmin = 10 oC Temperature Driving ForceTH-ΔT

  8. Example 1 – Solution • Enthalpy Cascade Diagram T Cold pinch : 140 QH min : 60 QC min: 225

  9. Cp 150oC 150oC 180oC 1 40oC 2 150oC 150oC 150oC 2 40oC 4 140oC 140oC 180oC 3 60oC 3 140oC 140oC 105oC 4 30oC 2.6 Example 1 – Solution • HEN Grid Diagram T Cold pinch : 140 QH min : 60 QC min: 225

  10. Example 1 – Solution • HEN Grid Diagram Cp 150oC 150oC 180oC 1 40oC 2 150oC 150oC 150oC 2 40oC 4 140oC 140oC 180oC 3 60oC 3 140oC 105oC 105oC 4 30oC 2.6 T Cold pinch : 140 QH min : 60 QC min: 225

  11. 60 kW 60 kW H Example 1 – Solution • HEN Grid Diagram Cp  150oC 150oC 180oC 1 40oC 2 150oC 150oC 150oC 2 40oC 4  160oC 140oC 140oC 180oC 3 60oC 3 140oC 105oC 105oC 4 30oC 2.6 T Cold pinch : 140 QH min : 60 QC min: 225 

  12. 25 kW C 240 kW 200 kW C 195 kW Example 1 – Solution • HEN Grid Diagram Cp 60 kW 52.5oC   150oC 150oC 180oC 1 40oC 2  150oC 150oC 90oC 150oC 2 40oC 4 60 kW   160oC 140oC 140oC 180oC H 3 60oC 3  140oC 105oC 105oC 4 30oC 2.6 T Cold pinch : 140 QH min : 60 QC min: 225  

  13. Example 2 • Given the stream information below, design the MER network Tmin = 10 oC

  14. Example 2 – Solution Tmin = 10 oC Temperature Driving ForceTH-ΔT

  15. Example 2 – Solution Tmin = 10 oC Temperature Driving ForceTH-ΔT

  16. Example 2 – Solution Tmin = 10 oC Temperature Driving ForceTH-ΔT

  17. Example 2 – Solution Tmin = 10 oC Temperature Driving ForceTH-ΔT

  18. Example 2 – Solution Tmin = 10 oC Temperature Driving ForceTH-ΔT

  19. Example 2 – Solution • Temperature Interval Diagram

  20. Example 2 – Solution • Enthalpy Cascade Diagram T Cold pinch : 80 QH min : 80 QC min: 50

  21. Example 2 – Solution • HEN Grid Diagram Cp 90oC 90oC 180oC 1 60oC 3 90oC 90oC 150oC 2 30oC 1 80oC 80oC 135oC 3 30oC 2 80oC 80oC 140oC 4 80oC 5 T Cold pinch : 80 QH min : 80 QC min: 50

  22. Example 2 – Solution • HEN Grid Diagram Cp 90oC 90oC 180oC 1 60oC 3 90oC 90oC 150oC 2 30oC 1 80oC 80oC 135oC 3 30oC 2 80oC 80oC 140oC 4 80oC 5 T Cold pinch : 80 QH min : 80 QC min: 50

  23. 270 kW 60 kW 50 kW 30 kW H H Example 2 – Solution • HEN Grid Diagram Cp  90oC 90oC 180oC 1 60oC 3  90oC 90oC 150oC 2 30oC 1  110oC 80oC 80oC 135oC 3 30oC 2 134oC  80oC 80oC 140oC 4 80oC 5 T Cold pinch : 80 QH min : 80 QC min: 50 

  24. 270 kW 90 kW 60 kW 10 kW 50 kW 50 kW 30 kW H C H Example 2 – Solution • HEN Grid Diagram Cp   90oC 90oC 180oC 1 60oC 3  80oC  90oC 90oC 150oC 2 30oC 1  35oC 110oC  80oC 80oC 135oC 3 30oC 2 134oC  80oC 80oC 140oC 4 80oC 5 T Cold pinch : 80 QH min : 80 QC min: 50  

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