Problem Statement

New in V7.3 - Usability Improvements and New Example Cases for Rate-Based Distillation in HYSYS

Solution

The use of rate-based distillation models for sour gas cleaning applications was first introduced within Aspen HYSYS in V7.2. V7.3 introduces improvements in both its usability and new industrial-scale example models for a variety of amines.

Easier Accessibility of the Rate-Based Distillation Unit Operation Model

The rate-based distillation unit operation model is now available on the standard HYSYS model palette, and can be included within any HYSYS flowsheet.

The use of the rate-based distillation model with HYSYS does require the availability of licenses for both Aspen Rate-Based Distillation and Aspen EO Modeling Option.

New ?True to Apparent? Transition to Facilitate Consistent Transfer of Compositions

The physical property model used within the rate-based distillation column model uses the true component approach, tracking individual ion species (e.g., H3O+, OH-, HS-, S--, etc.). To facilitate consistent transfer of data from the rate-based column to downstream unit operations that use the apparent compositions, a new transition called ?True to Apparent? has been added.

New Library of Ready-to-Use Examples

A new library of ready-to-use examples is now distributed with Aspen HYSYS V7.3. These industrial scale examples of sour-gas cleaning applications cover a variety of the common amines packages, and include the property package files (reaction sets and improved thermo properties parameters) for amines absorption modeling, making it easier to get started.

Keywords

Rate Based Distillation, What's New, Examples, Sour Gas, Amines