Aspen Rate-Based Distillation

Learn how to use the Aspen Rate-Based Distillation to predict tray efficiency or HETP and evaluate column set up. Learn how to use Rate-Based Distillation model to match real column data. Create accurate simulations of reactive and non-reactive column separations.


  • Engineers who need to simulate accurate models of rate limited separations
  • Former RateFrac users converting to Aspen Rate-Based Distillation

Training Details

  • Course Id:


  • Duration:

    1 day(s)

  • CEUs Awarded:


  • Level:



  • Create accurate simulations of reactive and non-reactive column separations which are rate limited
  • Use detailed rate-based modeling to understand and improve separation performance
  • Become prepared to work with difficult simulations through exposure to convergence and troubleshooting techniques


  • Instruction on basic topics
  • Demonstrations of features
  • Instructor-guided exercises
  • Participate in hands-on workshops that apply learned concepts
  • Detailed course notes are provided


Must have attended
  • EAP101 Aspen Plus: Process Modeling
  • Good familiarity with Aspen Plus process modeling and the graphical user interface
  • To apply skills after taking course, access to Aspen Plus should be available

Subsequent Courses

EAP250 Aspen Plus: Distillation Modeling


Introduction to Rate-Based Distillation
  • Review difference between equilibrium and rate-based model
  • Recognize the capabilities of the Aspen Plus Rate-Based Distillation application

Using Aspen Plus Rate-Based Distillation
  • Identify and explain how to enable, specify, and run Aspen Rate-Based Distillation
  • Demonstrate the conversion of an equilibrium Aspen Plus RadFrac column to a column that uses Aspen Rate-Based Distillation
  • Workshop Compare the operation of the equilibrium RadFrac model to Aspen Rate-Based Distillation
  • Workshop: Use an existing equilibrium-based column and enter rate based data

Reactive Distillation with Aspen Rate-Based Distillation
  • Recognize capabilities and options available for running Aspen Rate-Based Distillation with reactive processes
  • Demonstrate how to tune and adjust a reactive distillation model with the various Rate-Based functions
  • Workshop: Use Aspen Rate-Based Distillation to simulate the synthesis of an ether in a distillation column
  • Workshop: Capture CO2 from a gas stream using caustic solution in a Rate-Based absorber column

Tuning the Aspen Rate-Based Distillation Model
  • Identify and explain the rate-based distillation characteristics of the Pack/Tray Rating forms
  • Demonstrate how to use the Aspen Rate-Based Distillation tuning parameters
  • Workshop: Set up a sensitivity analysis and to study the influence of tuning data
  • Workshop: Use a Calculator Block to make corrections for tuning parameter adjustments
  • Workshop: Perform a design/sizing calculation within a Rate-Based model

Convergence and Diagnostics
  • Explain the Aspen Rate-Based Distillation calculation procedure
  • Review the various convergence settings associated with Rate-Based Distillation
  • Discuss typical problems encountered when running the Rate-Based Distillation model and provide troubleshooting techniques for achieving convergence
  • Workshop: Use sample rate-based distillation columns to practice and apply different convergence strategies

Appendix - The Rate-Based Modeling Approach
  • Identify the mathematical model of the Aspen Rate-Based Distillation non-equilibrium segment  
  • Identify the calculation of height equivalent to a theoretical plate (HETP) and tray efficiency

Register for a Class

Date Class Type Location Price Language

Aspen Technology, Inc. awards Continuing Education Units (CEUs) for training classes conducted by our organization. One CEU is granted for every 10 hours of class participation.