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Methanol-Water Batch Distillation

Detailed analysis of batch distillation performance of methanol-water mixture, including VLE diagrams, reflux data, product recovery rates, and conclusions for optimal operation. Prepared by Jason Hixson, Don Scott, and Michael Hickey.

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Methanol-Water Batch Distillation

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  1. Methanol-Water Batch Distillation September 20, 2005 UTCENCH 435 Prepared by: Jason Hixson Don Scott Michael Hickey

  2. Objective • Equipment • Power • VLE Diagram • Reboiler and Reflux composition. • VLE Data for the column trays. • Product Recovery. • Conclusions • Recommendations

  3. Objective • Observe and analyze performance of batch distillation.

  4. Power • Average heat loss Reboiler: • Average heat loss Column: • Average heat loss Condenser:

  5. VLE Diagram Vapor, y Liquid,x

  6. Reboiler Composition vs Time 75% Reflux 0% Reflux Initial xm: 23% 2500 W Initial Vm: 16.86 L

  7. Reflux Composition vs Time 75% Reflux 0% Reflux Collected 1.69 L at 75% Reflux Collected 6.38 L at 0% Reflux

  8. VLE Diagrams • All diagrams are for 75% reflux and 3200 W Setting.

  9. Tray 12 VLE DIAGRAM

  10. Tray 11 VLE DIAGRAM

  11. Tray 10 VLE DIAGRAM

  12. Tray 9 VLE DIAGRAM

  13. Tray 8 VLE DIAGRAM

  14. Tray 7 VLE DIAGRAM

  15. Tray 6 VLE DIAGRAM

  16. Tray 5 VLE DIAGRAM

  17. Tray 4 VLE DIAGRAM

  18. Tray 3 VLE DIAGRAM

  19. Tray 2 VLE DIAGRAM

  20. Tray 1 VLE DIAGRAM

  21. Product Recovery • At 75% reflux and 3200 Watts the rate of recovery is approximately .5 gal/hour. • At 0% reflux and 2500 watts the rate of recovery is approximately 1.6 gal/hour.

  22. Conclusions • At 75% reflux the purity of methane was a much higher quality. • If quality is more important then a high reflux percentage is needed. • If quantity and timeliness is more important then a low reflux is needed.

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