Aspen Plus: Distillation Modeling

Course ID : EAP250

Duration In-class (в days) : 2 days

Duration Online : 2 days

Сurriculum : in-class, Virtual Instructor-Led Training - ONLINE

Price : $1 290

Overview

Build, improve and optimize steady state distillation models using Aspen Plus RadFrac block. Explore the rate-based modeling and the capabilities of RadFrac to model CO2 capture processes to meet sustainabilitygoals when required. Utilize Aspen Properties analyses to synthesize the best separation synthesis to achieve the desired separation tasks. Practice using complex features in distillation processes including, azeotropic, three phase and reactive distillation as well as columns with features such as pumparounds, side draws, multiple condensers, etc. using Aspen Plus. Review troubleshooting tips and how to enhance convergence and evaluate model quality.

Audience for this course

Engineers familiar with Aspen Plus with some experience simulating distillation processes who wish to improve their ability to simulate more difficult distillation processes.

Objective

Gain the skills and knowledge to model complex distillation processes
Reduce process design time by using advanced features of RadFrac
Determine separation schemes using conceptual design tools
Perform Tray Sizing/Rating and Packed Sizing/Rating calculations
Apply Aspen Rate-Based Distillation to accurately model column with real trays and packing
Use column analysis tools to optimize the feed location and number of stages and improve energy utilization
Improve distillation model stability and accuracy

Prerequisites for this course

Must have attended the EAP101 Aspen Plus: Process Modeling training course or have previous experience in using Aspen Plus.

Outcomes

Course Benefits

• Gain the skills and knowledge to model complex distillation processes

• Reduce process design time by using advanced features of RadFrac

• Determine separation schemes using conceptual design tools

• Perform Tray Sizing/Rating and Packed Sizing/Rating calculations

• Apply Aspen Rate-Based Distillation to accurately model column with real trays and packing

• Use column analysis tools to optimize the feed location and number of stages and improve energy utilization

• Improve distillation model stability and accuracy

• Get an overview of sustainability processes to capture CO2 in which distillation models take place

Take a deep dive into distillation modeling. Learn how to handle complex distillation such as azeotropic, 3-phase, and reactive distillation, how to set up pumparounds, side draws, multiple condensers and how to optimize the feed location and number of stages. Learn how to perform Sizing/Rating of trayed and packed towers. Troubleshoot convergence issues.

Outline

Introduction to Distillation Synthesis and Conceptual Design
Review and explain the Conceptual Design tools
Discuss how to use Ternary Maps to analyze distillation sequences
Workshop: Design a separation sequence using the Ternary Maps
Conceptual Design Block
Identify and explain the Aspen Plus conceptual distillation design block, CONSEP
Workshop: Ester separation from ether and alcohol
Distillation Using RadFrac
Preview available multistage separation models in Aspen Plus
Review the RadFrac model for single columns and functionality regarding Rating and Design
Workshop: HCL column setup
Efficiency
Review and explain the different types of efficiencies available in RadFrac
Sizing and Rating of Trays and Packing
Review and explain Column Analysis for Sizing (Design) and Rating of trays and packing
Workshop: Perform tray rating on an HCl column
NQ Curves
Review how the NQ Curve feature can be used to optimize the feed stage location and the total number of stages of a distillation column
Workshop: Use NQ Curves to optimize the feed stage location and number of stages for a hydrocarbon fractionation unit
Reporting Features
Review and explain the following reporting features of the RadFrac block: Heat Curves, Pseudo Streams
Complex Configurations
Learn how to model: zero flow in bottoms or distillate streams, pumparounds and bypasses, thermosiphon reboilers, and divided wall columns
Workshop: C2 splitter with side heater
Reactive Distillation
Review and explain how to model a reactive distillation column in Aspen Plus
Workshop: Specify a reactive distillation case
Three Phase Distillation
Review and explain how to model a distillation column where two liquid phases may be present on some or all stages
Workshop: Model a methylchloroacetate column
Three Phase Distillation (Free and Dirty Water)
Review and explain how to model a column that has two liquid phases, when one of the liquid phase is assumed to be pure water or mostly water
Demonstrate how to model a quench tower that uses the free-water option
Rate-Based Distillation
Review differences between equilibrium and rate-based distillation models
Recognize the capabilities of Aspen Plus Rate-Based Distillation
Workshop: Model a methanol-water distillation column using rate-based techniques
RadFrac Convergence and Troubleshooting
Review the convergence algorithms used by RadFrac
Explain the recommendations for selecting an appropriate convergence algorithm
Review and explain common convergence problems
Analyze how to troubleshoot and converge difficult columns
Workshop: Apply troubleshooting techniques to converge a series of RadFrac models