1. gO:CAPE-OPEN Costas Pantelides Technology Director
Process Systems Enterprise Limited
gO:CAPE-OPEN
Costas Pantelides
Technology Director
CO-LaN Annual Meeting
Leipzig, 13 February 2004
The model company

2. Overview gO:CAPE-OPEN within the gPROMS v2.3 family
gO:CAPE-OPEN: why and how ?
Beyond the CAPE-OPEN mixer-splitter:
High-fidelity rate-based modelling of reactive absorption
Demonstration

3. gO:CAPE-OPEN within the gPROMS v2.3 family

4. gPROMS v2.3 family products
gPROMS ModelBuilder
gSERVER for 3rd party gPROMS-based applications
gO:CAPE-OPEN
gO:CFD
gO:MATLAB
gO:RUN
gO:Simulink
…consistent models, same engine across the product/process lifecycle

5. gO:CAPE-OPEN: why and how ?

6. gO:CAPE-OPEN overview
Introduce advanced gPROMS models within CAPE-OPEN compliant steady-state flowsheeting packages e.g.
ASPEN PLUS™
HYSYS™
Consistent physical properties used throughout
No programming required
retain advantages of gPROMS-based modelling

7. gO:CAPE-OPEN +
gPROMS packaged model

9. Snapshots from gO:CAPE-OPEN – I

10. Snapshots from gO:CAPE-OPEN – II

11. Snapshots from gO:CAPE-OPEN – III

12. The gCO file Identification information Port information
input or output
obligatory or optional connectivity
Identification information
Port information
Exchangeable quantities
gPROMS mathematical model
(encrypted) input file
auxiliary files
Integers, reals, booleans, enumerated types
Scalars, or arrays/distributions of fixed or variable length
Input, output, or input-output
Self-contained XML file

13. Operation of gO:CAPE-OPEN
Expose CAPE-OPEN Unit Object interfaces to the host flowsheeting environment
Initialisation of simulation
parse gCO file
start gSERVER
load gPROMS model into gSERVER
perform model initialisation
Main computation loop
ask gPROMS model to perform unit object calculations whenever requested by host
Termination
save internal state

14. gO:CAPE-OPEN example High-fidelity rate-based modelling of absorption columns with fast reaction

15. Rate-based modelling is necessary for…
Accurate tracking of impurities
Prediction of departure from equilibrium caused by limited rates of mass and heat transfer
Prediction of reverse diffusion
Prediction of diffusion barriers
Prediction of interactions between diffusion and fast reactions
Prediction of effective reaction rates

16. Rate-based modelling is applicable to…
Reactive and non-reactive absorption
Reactive distillation
Condensation at the presence of non-condensibles
Evaporation
Liquid-liquid extraction
Multiphase reactors

17. CO2 removal in reactive absorption packing column gO:CAPE-OPEN in ASPEN PLUS
P. Tontiwachuwuthikul, A. Meisen, C.J.Lim, Chemical Engineering Science, 47, pp , 1992.

18. Packing column configuration and range of column operation
Height: 4.3 – 6.5 [m]
Diameter: 0.1 [m]
Packing: ½’’ Berl Saddles
Liquid feed: NaOH solution – 2.5 mol/l
Gas feed: 9.1 – 18.7% CO2
>47000 equations
Caustic soda solution
Processed gas

19. Process Systems Enterprise Limited
The model company