Build, Optimize and Control Dynamic Process Models using Aspen HYSYS® Dynamics
- Learn how to convert steady-state models into dynamic models to solve process design, plant operation and control problems using Aspen HYSYS Dynamics.
- Analyze and determine the best control strategy to keep the plant operation at its best using different controller models and strip charts (plots).
- Rigorously model valve characteristics and define actuator parameters to closely mimic a realistic flow behavior.
- Dynamically model compressors using performance curves and account for anti-surge controllers to overcome the problems that arise when low flow to the compressor is likely to occur due to process disturbances.
- Model distillation columns in dynamic mode and vent off excess vapor through pressure safety valves to protect the columns against overpressure scenarios.
- Learn to automate dynamic models by defining actions to be executed either when a condition is met or when a specific simulation time is reached during the dynamic run in the Event Scheduler.
Audience:
- Engineers with Aspen HYSYS experience
- Engineers with no or limited previous experience in dynamic simulation
Training Details
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Course Id:
EHY223
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Duration:
3 day(s)
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CEUs Awarded:
2.1
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Level:
Intermediate
Benefits
- Explore Dynamic models to introduce various real-life disturbances to a simulation and discover how different control strategies can mitigate these disturbances
- Define dynamic specifications, create strip charts and configure various controllers in the process simulation
- Automate actions within a HYSYS Dynamics simulation by using the Event Scheduler and Cause & Effect Matrix tools
- Interactive sizing of distillation column using the Column Analysis tool to obtain detailed geometry for dynamic simulation
- Learn pressure flow theory, column dynamics concepts, pipeline hydraulics, and basic process control theory
Approach
- Instruction on basic topics through presentation
- Discussion about the general approach and the key elements for successful dynamic simulations
- Instructor-guided demonstrations of features
- Hands-on workshops
- Detailed course notes
Pre-requisites
- Familiarity with Aspen HYSYS steady-state modeling concepts and Aspen Simulation Workbook
- Or previously attended EHY101 Introduction to Process Modeling using Aspen HYSYS and EHY121 Building MS Excel User Interfaces for Aspen HYSYS Simulations Using Aspen Simulation Workbook
Agenda
Transitioning from Steady-state to Dynamic Mode- Define dynamic pressure-flow specifications and enter equipment sizing data
- Understand the solving strategy and degrees of freedom analysis in Aspen HYSYS Dynamics
- Use the Dynamics Assistant tool to verify the preparedness of a simulation to be run in dynamic mode
- Workshop: Convert a Steady-state Model into a Dynamic Model
- Add and set up controllers in a dynamic model
- Create strip charts to monitor key process variables
- Workshop: Add controllers and Strip Charts
- Configure a control valve with detailed operating characteristics and actuator parameters
- Implement heat loss models for process vessels
- Select nozzle locations and account for the hydrostatic head contribution in pressure drop calculations
- Workshop: Dynamic Details
- Add unit operations directly in dynamic mode
- Initialize newly added unit operations in dynamic mode
- Develop appropriate control strategies using split range and on-off controllers
- Install a relief valve for vessel overpressure protection
- Workshop: Expanding the Model in Dynamic mode
- Robustly model compressors using performance curves
- Model rotating equipment in dynamic mode
- Implement surge control schemes for compressors
- Workshop: Compressor Curves and Surge Control
- Convert a steady-state model containing distillation columns into a dynamic model
- Use the Column Internals tool to enter column geometry data and have it ready to run in dynamic mode
- Model an LPG distillation column in dynamic mode and implement an effective control strategy
- Workshop: Dynamic Column Modeling
- Modify the condenser overhead structure of a distillation column to include rigorous heat transfer equipment
- Develop model-building techniques and follow best practices by adding operations and controllers to the dynamic model
- Install a relief valve to protect the column overhead system against pressurization / emergency scenarios
- Workshop: Configure a Column Pressure Safety Valve
- Configure the Event Scheduler and Cause and Effect Matrix tools to automate an Aspen HYSYS Dynamics model
- Perform customized calculations in dynamic mode with the Spreadsheet operation
- Workshop: Fire Scenario with the Event Scheduler and Cause & Effect Matrix
- Learn how to define User Variables in Aspen HYSYS Dynamics
- Demonstrate the use of Aspen Simulation Workbook as a tool to link Aspen HYSYS Dynamics variables with Microsoft Excel
- Use ASW Profile Tables to monitor process variables in Excel
- Workshop: Create a Dynamic User Variable and Link Aspen Simulation Workbook to a Dynamic Model
- Explain the basics of multiphase flow modeling in pipelines
- Review pipeline modeling options in Aspen HYSYS
- Build Aspen Hydraulics as an option for steady-state and dynamic pipeline modeling
- Workshop: Pipeline Hydraulics
- Set up a compressor to perform dynamic surge analyses.
- Perform dynamic runs by only fully defining a compressor model in steady-state (skipping the necessary setup to depart to dynamic mode).
- Activate the analysis and run the dynamic scenario.
- Workshop: Activated Dynamic Compressor Surge
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.