Aspen Dynamics®

Dynamic simulation and optimization of chemical processes

Aspen Dynamics extends Aspen Plus steady-state models into dynamic process models, enabling design and verification of process control schemes, safety studies, relief valve sizing, failure analysis, and development of startup, shutdown, rate-change, and grade transition policies. Aspen Dynamics is a core element of AspenTech’s aspenONE™ Process Engineering applications.

Features

Easy conversion of steady-state Aspen Plus® models into dynamic models; common look and feel with Aspen Plus and Aspen Custom Modeler®.
Optional custom modeling using Aspen Custom Modeler, enabling modification of standard unit operations in the Aspen Dynamics model library.
Best-in-class physical properties methods and data. Aspen Dynamics is fully integrated with Aspen Properties®; it includes extensive databases of pure component and phase equilibrium data for chemicals, electrolytes, solids, and polymers and links to the electrolyte data package sold by OLI Systems.
Optimization and estimation tools enabling parameter fitting, data reconciliation, and steady-state and dynamic process optimization.
Equation-oriented architecture allowing timely and robust simulation of complex, highly integrated processes.
Flexible Task Language to define transition schemes or to simulate process equipment failures or other disturbances.
Library of equipment including rigorous reactive distillation models with hydraulics and a full set of pressure relief models.
Library of control models to simulate process control systems, including links to Aspen DMCPlus® control models.
Option of flow-driven or pressure-driven simulation enables the user to optimize the model for performance or rigor.

Options

Aspen Model Runner™ is an execution environment which can be used to run process models exported from Aspen Dynamics. Use Aspen Model Runner to protect intellectual property inside the models and to reduce deployment costs.
Aspen Polymers Plus® extends Aspen Dynamics with a complete set of polymer thermodynamics methods and data, polymerization reaction models, and extensions to the equipment models to track polymer properties.
Aspen Simulation Workbook™ enables easy development of Excel®-based user interfaces to Aspen Dynamics or Aspen Model Runner, allowing broad deployment to casual users in the field.

Benefits

Aspen Plus is a proven, industry-standard solution with over ten years of use in the field. Customers have recognized and reported:

$15 million saved through improved start-up procedures
$10 million saved capital cost by avoiding over-design of relief systems
15% capacity increase in a sold-out plant through improved operability
Improved process safety through better operational procedures, improved control system design, and proper relief-valve sizing
Better design decisions through detailed analysis of the trade-offs between process operability and process integration

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