3 dager
Deltid
Kurs
Norsk
Klasserom
Aspen HYSYS Dynamics: Introduction to Dynamic Modeling
In collaboration with Aspentech
Course Benefits
This course is designed to show you how to:
- Study items of interest in dynamic modeling such as vessel relief scenarios, compressor surge control, distillation column control, and pipeline hydraulics
- Learn the best practices for transitioning from steady-state to dynamic modeling and discover shortcuts for efficient use of HYSYS Dynamics
- Study the effectiveness of process safety measures for the implementation of ESD (Emergency Shutdown systems) through implementation of the Event Scheduler
- Help justify operational changes and counter regulatory concerns to comply with regulations and product quality constraints for process operations
Who Should Attend
- Engineers with Aspen HYSYS experience
- Engineers with no or limited previous experience in dynamic simulation
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
Prerequisites
Familiarity with Aspen HYSYS steady-state modeling concepts and Aspen Simulation workbook or have attended EHY101 Aspen HYSYS: Process Modeling
Introduction to Dynamic Modeling -Course Agenda
Getting Started in Steady State
- Define a fluid package
- Add streams and operations
- Converge and analyze steady state results
- Learn the flow sheet shortcuts to rapidly build a steady state model to establish a functioning dynamic model
- Workshop: Introduction to the basic concepts necessary for creating, solving and analyzing simulations in Aspen HYSYS®
Transitioning from Steady State to Dynamics
- Define dynamic pressure/flow specifications and equipment sizing data
- Add controllers and build strip charts to capture key results and operating data to analyze the process variables
- Explore flow sheet summary table to enter inputs and review preference settings to maintain file backup and data size
- Workshop: Review the basic concepts of steady state modeling in HYSYS, then convert the simulation into HYSYS Dynamics
Pressure-Flow Theory
- More detailed investigation of the required inputs for a HYSYS Dynamics simulation
- Learn about dynamic pressure/flow specifications for various unit operations
- Review the solving strategy and degrees of freedom analysis of HYSYS Dynamics
- Learn about the HYSYS Dynamics Assistant, flow sheet color scheme and key shortcuts for building dynamic models
- Workshop: Vary the pressure flow spec around vessels and valves to perform backflow flow calculation for flow profile
Dynamic Details
- Study valve characteristics and actuator parameters
- Implement heat loss models for process vessels
- Introduce nozzle location and hydrostatic head calculations
- Discuss the dynamics Integrator settings
- Workshop: Add operational details to an existing dynamic simulation to more accurately model real equipment
Expanding the Model
- Follow best practices for adding dynamic specifications, unit operations and controllers in the dynamic mode
- Develop appropriate control strategies using split range and on-off controllers
- Install a relief valve for vessel overpressure protection
- Workshop: Add equipment, modify the control system and add a pressure relief valve to a simulation directly in Dynamic mode
Compressor Curves and Surge Control
- Specify head and efficiency curves for compressors
- Use multiple curves to model compressor performance
- Make changes and additions in Dynamic model
- Move Pressure-Flow specs when required
- Accurately model existing plant equipment with Aspen HYSYS
- Add anti-surge control to a compressor
- Workshop: Apply performance curves to better represent the dynamic behavior of a compressor model. Implement a compressor surge control strategy to protect the equipment from potential damage
Dynamic Column Modeling
- Configure LNG column model in HYSYS Dynamics
- Prepare the column for dynamic simulation using tray sizing utility to calculate the tray holdup volume details
- Develop an appropriate control strategy for the column reflux, tray temperature and condenser pressure
- Explore the workflow to replace the column default kettle reboiler with a shell and tube heat exchanger
- Workshop: Set up a distillation column in steady state mode and transition back into dynamics
Column Pressure Relief
- Replace the standard condenser unit operation with a detailed overhead system including an air cooled exchanger
- Make necessary P/F (Pressure / Flow) specs for the overhead system
- Further develop model-building techniques and best practices by adding operations and controllers in the dynamic mode
- Install a relief valve for protection of the column overhead system
- Workshop: Set up a customized distillation column overhead condenser system
The Event Scheduler, Cause & Effect Matrix, and Spreadsheet
- Introduction to Event Scheduler manager
- Add Schedules and Build Sequences
- Implement cause-and-event matrix
- Create event conditions to activate valve actions
- Workshop: Set up a fire scenario for a vessel and implement process safety measures
Basic Control Theory
- Learn the basics of process control theory including feedback and feed forward control
- Discuss PID control action and options for tuning PID parameters
- Examine general guidelines for implementing appropriate control strategies
- Workshop: Basic discussion on control Theory for Dynamic Simulations
Dynamic User Variables and Profile Tables in excel
- Learn how to work with user variables in HYSYS Dynamics to accumulate the flow passing through a process stream
- Add Profile Tables in excel to integrate HYSYS Dynamics simulations
- Workshop: Accumulate flow passing through relief valve
- Workshop: Create profile table using ASW for reporting
Pipeline Hydraulics
- Basics of Modeling Multiphase Flow in Pipelines
- Pipeline Modeling Options in HYSYS
- Review pipeline hydraulics calculation options in Aspen HYSYS
- Explore Aspen Hydraulics to model pipeline hydraulics
- Pig launching, generating pipeline profiles and identifying slug regions
- Workshop: Configure and use the pigging operations, and launch pig using ASW
Forkunnskaper
Familiarity with Aspen HYSYS steady-state modeling concepts and Aspen Simulation workbook or have attended EHY101 Aspen HYSYS: Process Modeling
Varighet
3 days
Målgruppe
- Engineers with Aspen HYSYS experience
- Engineers with no or limited previous experience in dynamic simulation
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