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Thermosiphon Reboilers Short Course

Course Fee: US$650

This short course is dedicated to the discussion of thermosiphon reboilers. Model thermosiphons in Xist using detailed guidelines for piping and fluid property specification. Investigate thermosiphon operational issues and learn how to screen for these using Xist. This course provides a checklist for future design review.

Key Topics

  • Common types of distillation column reboiler
  • Once-through vs. recirculating thermosiphon reboilers
  • Vertical vs. horizontal configurations
  • Modeling thermosiphons in Xist
  • Piping and fluid property specification
  • Operational issues
  • Modeling turndown operation

Suggested Participants

Engineers who design, rate or troubleshoot thermosiphon reboilers

Course credits: 6 hours (PDH/CEU)


  1. Reboiler Equipment
    • Types of reboilers
    • Advantages and disadvantages of each

  2. Modeling Thermosiphons 
    • Activating the thermosiphon logic in Xist 
    • Piping specification
    • Guidelines for fluid properties and heat release specification
    • Overview of pressure drop calculations

  3. Operational Issues 
    • Overview of wet-wall and dry-wall boiling methods 
    • Typical thermosiphon reboiler operational problems
    • HTRI thermosiphon reboilers checklist
    • Modeling turndown operation