The gPROMS Object for CAPE-OPEN

The gPROMS® Object for CAPE-OPEN (gO:CAPE-OPEN) is a powerful tool that enables you to execute any gPROMS model within a CAPE-OPEN compliant flowsheeting environment such as Aspentech's Aspen Plus® and Invensys SimSci's PRO/II®.

This means that you can build a model of whatever complexity you require using gPROMS ModelBuilder's state-of-the-art modelling and solution capabilities, and then run it within traditional process flowsheeting tools.


For example, TOTAL implemented a complex three-phase Fischer-Tropsch GTL slurry bed reactor in gPROMS for execution in Invensys SimSci's PRO/II steady-state flowsheeting package.

With gO:CAPE-OPEN you can build a custom model of a reactor, use gPROMS’s parameter estimation capabilities to determine kinetic constants, optimize geometric aspects, operating conditions and control performance for various feed change scenarios, then use exactly the same model for steady-state simulation within PRO/II.

The gPROMS model executing within the flowsheeting environment can use the environment's native physical properties, ensuring consistency across applications.


This powerful combination of technologies:

  • lets your engineers work in their environment of choice
  • enables you to remain in compliance with corporate software standards
  • helps promote seamless working across different parts of the organisation

while accessing the advanced process modelling power of gPROMS to deliver additional value at every step.

AIChE 2009 – gPROMS Fischer-Tropsch GTL slurry bed model in PRO/II

Controlling a CAPE-OPEN Parameter through the PRO/II GUI (courtesy of Invensys Process Systems)

How gO:CAPE-OPEN works: a simple step-by-step guide

You can package and export any gPROMS model to a CAPE-OPEN compliant flowsheeting package.

The resulting object includes all the solvers and support software required for the model's solution. The gPROMS model is executed just like any other unit operation within the package.

Procedure for deploying a CAPE-OPEN model within a flowsheeting package

Step 1: Build a gPROMS model of the reactor or separation unit (for example) in gPROMS ModelBuilder.

Step 2: Export the gPROMS model using the ModelBuilder export facility. The model is packaged for export with all the solvers required for solution.

Procedure for deploying a CAPE-OPEN model within a flowsheeting package

Step 3: Import the gPROMS model into the CAPE-OPEN compliant process simulator – for example, Aspen Plus®.

Step 4: Perform steady-state process simulation using the gPROMS high-fidelity reactor model within the Aspen Plus® environment.


gO:CAPE-OPEN is licensed as a separate PSE product. A gPROMS ModelBuilder licence is required for building the gPROMS model that will execute within the CAPE-OPEN environment.

PSE's commitment to CAPE-OPEN

PSE is committed to the CAPE-OPEN set of standards and is an Associate Member of the CO-LaN organisation.

PSE has played a major part in defining CAPE-OPEN standards over the years.

More Information
We were able to build a highly-detailed model of reactive absorption that we could then drop straight into an Aspen Plus flowsheet for steady-state analysis of process synthesis.

This gave us the power and ease-of-use of gPROMS while allowing us to comply with corporate software policy.
AIChE 2009 – gPROMS Fischer-Tropsch GTL slurry bed model in PRO/II

Fischer-Tropsch reactor implementation, courtesy of Total

See the presentation

AIChE 2009 – gPROMS Fischer-Tropsch GTL slurry bed model in PRO/II

AIChE Annual Meeting 2009
Presentation by PSE, Invensys Process Systems and Total

With gO:CAPE-OPEN...

Execute advanced gPROMS models within Aspen Plus®, Hysys® and PRO/II®

Put advanced models on process engineers’ desktops to extend the power of their flowsheeting tools

Use the same models for advanced dynamic analysis and steady-state flowsheeting

Use existing, consistent physical properties from all CO-compliant packages

PSE Consulting

PSE Consulting's ModelCare service can provide expert assistance in building high-fidelity models of any type of process