Aspen Rate-Based Distillation

(formerly Aspen RateSep™)

Rate-based column modeling for maximum reliability

Product Training

Aspen Rate-Based Distillation Training

Related Courses

Aspen Rate-Based Distillation extends the functionality of the Aspen Plus® RadFrac distillation model with second-generation rate-based technology, ensuring more accurate simulation predictions over a wider range of operating conditions. Aspen Rate-Based Distillation uses state-of-the-art mass and heat transfer correlations to predict column performance, eliminating the need for efficiency factors or HETPs.

Aspen Rate-Based Distillation is a core element of AspenTech aspenONE® Process Engineering applications.

Features

Tightly integrated into Aspen Plus, allowing single-click switch from equilibrium-based to rate-based distillation calculations; homotopy options ensure robust initialization and convergence.
Online deployment of models as part of an open-loop operator advisory system or in closed-loop, real-time optimization/advanced process control applications when used with Aspen Online Deployment™ and Aspen Simulation Workbook™.
Best-in-class physical properties methods and data. Aspen Rate-Based Distillation uses the extensive databases of pure component and phase equilibrium data built into Aspen Plus.
Reactive distillation, including electrolytic, equilibrium, and kinetic reactions
Built-in mass and heat transfer and column hydraulics correlations for a wide range of trays and packing types.
Extensibility. Includes a full set of interfaces to link in user-defined correlations for transfer coefficients, interfacial area, pressure drop, and kinetics.
Design mode for calculating column diameter based on approach to flooding
Leverages Aspen Plus’s unique equation-oriented architecture, ensuring excellent computational performance

Options

Aspen Rate-Based Distillation is an optional extension of Aspen Plus, tightly integrated with the industry-standard RadFrac distillation model, enabling single-click transition from equilibrium-based to rate-based calculations
Aspen Simulation Workbook enables easy development of Excel®-based user interfaces to Aspen Plus models, enabling deployment to casual users

Benefits

Aspen Rate-Based Distillation is a proven, second-generation, rate-based distillation modeling solution used by nearly 100 commercial clients. Customers have recognized and reported:

More than 10% savings in capital expenditure by avoiding costly over-design of key distillation equipment Significantly improved model accuracy compared to equilibrium-based and first-generation, rate-based distillation models Reduced risks of inadequately sizing key columns, resulting in better investment decisions and improved ROI