Aspen HYSYS and Process Modeling

Overview:

Introduction:

This training program provides participants with the skills to effectively use Aspen HYSYS software for process simulation and modeling. It enables participants to address real-world engineering challenges and enhance process performance.

Program Objectives:

At the end of this program, participants will be able to:

• Gain proficiency in building, navigating, and optimizing process simulations using Aspen HYSYS, including advanced steady-state simulations.

• Utilize various HYSYS functions efficiently to construct comprehensive process flowsheets, leveraging intuitive solving capabilities for rapid model development.

• Explore multi-flowsheet integration to streamline and organize simulation efforts effectively, using Workbook and Flowsheet interfaces for quick modeling.

• Enhance convergence characteristics of columns and flowsheets, troubleshoot common issues, and improve simulation accuracy.

• Utilize Aspen HYSYS's rating capabilities to evaluate the performance of existing equipment and determine optimum operating points through case studies.

• Learn pipeline hydraulics calculations essential for assessing sizing requirements in gas gathering systems.

• Discover effective methods for reporting simulation results, including the use of Microsoft Excel VB macros, to communicate findings efficiently.

Targeted Audience:

• Process Engineers with Process simulation experience.

• New engineering graduates/technologists who will be using Aspen HYSYS in their daily work.

• Process engineers doing process design and optimization projects and studies.

• Plant engineers checking plant performance under different operating conditions.

• R&D engineers and researchers using Aspen HYSYS for process synthesis.

Program Outlines:

Unit 1:

Propane Refrigeration Loop:

• Add and connect operations to construct a simple flowsheet.

• Use the graphic interface to manipulate flowsheet objects and provide a clearer representation of the process.

• Understand how to process information has propagated both forwards and backward.

• Convert simulation cases to templates.

• Build and analyze a propane refrigeration loop simulation.

Unit 2:

Refrigerated Gas Plant:

• Install and converge heat exchangers.

• Use logical operations: Adjust and Balance.

• Model a simplified version of a refrigerated gas plant.

Unit 3:

NGL Fractionation Train:

• Model distillation columns with the assistance of the Column Input Expert.

• Manipulate column specifications to better represent process constraints.

• Evaluate utility requirements using the Process Utility Manager.

• Model a two-column natural gas liquid (NGL) recovery plant.

Unit 4:

Oil Characterization and HP Separation:

• Introduce Oil Characterization in Aspen HYSYS.

• Use the Aspen HYSYS Spreadsheet and Case Study functionality.

• Use the Oil Environment to characterize a crude assay and then employ the Case Study and Spreadsheet operation to determine how the Gas Oil Ratio (GOR) varies with pressure.

Unit 5:

Gas Gathering System:

• Simulate a gas gathering system located on varied terrain using the steady-state capabilities of Aspen HYSYS.

• Use the pipe segment and the Hydraulics subflowsheet to model a piping network in Aspen HYSYS.

Unit 6:

Two-Stage Compression:

• Introduce the use of the recycling operation.

• Recognize suitable recycling locations.

• Implement performance curves for rotating equipment.

• Utilize the recycle operation to build a two-stage compression flowsheet; define and activate compressor curves.

Unit 7:

Natural Gas Dehydration with TEG:

• Review the recommended methods to saturate single-phase and two-phase hydrocarbon streams.

• Discuss the implications of hydrate formation and the different means available to avoid hydrate problems.

• Model a typical TEG dehydration unit.

• Model a typical TEG dehydration unit and determine water dew point for the dry gas; use the hydrate utility to investigate the effects of methanol injection on hydrate inhibition.

Unit 8:

Rating Heat Exchangers:

• Review heat transfer calculation models in Aspen HYSYS.

• Configure a shell and tube heat exchanger to use a built-in Rating model.

• Integrate rigorous Exchanger Design and Rating (EDR) calculations into an Aspen HYSYS flowsheet.

• Use a Rating model to determine if an existing heat exchanger will meet process specifications; design and rate a heat exchanger using the EDR interface inside Aspen HYSYS.

Unit 9:

Troubleshooting / Best Practices:

• Introduce best practices for product integration and automation.

• Investigate the reasons why a simulation may produce poor results, consistency errors, etc.

• Identify appropriate thermodynamic models for common processes.

• Use suggested tips to debug simulations and columns.

• Troubleshoot existing Aspen HYSYS cases; recognize common problem areas in an Aspen HYSYS case.

Unit 10:

Reporting in Aspen HYSYS:

• Create a variety of customized reports using newly added functionality in the Report Manager.

• Access free Excel utilities designed to extract simulation data.

• Use Aspen Simulation Workbook to deploy models in Microsoft Excel.

• Use the Report Manager, Excel utilities, and Aspen Simulation Workbook to obtain custom reports.