Download - OLI Calculations in SysCAD - OLI Systems...OLI Simulation Conference 2016 Introduction to SysCAD •Flowsheet based simulator software for Steady State and Dynamic applications •Primarily

OLI Simulation Conference 2016

Innovative Software for Plant Simulation

OLI Calculations in SysCAD

Keith Armstrong – KWA Kenwalt Australia

OLI Conference Presentation, October 2016


Introduction to SysCAD

• Flowsheet based simulator software for Steady State and Dynamic applications

• Primarily minerals processing

• Used in Design and Operations

• Wide range of project sizes, complexity and applications

• Open Systems approach – Various Integration Solutions are possible


Why integrate OLI?

• Difficult to find suitable thermodynamic property models

• Require better prediction of properties, in particular pH and solubility

• OLI are leaders in electrolyte simulation technology

• Increasing number of requests about possible integration

• Looking for flexibility and best of both worlds


Why now?

• August 2016: Observed awkward use of OLI Studio and SysCAD by client:

– Use OLI Studio (Isothermal Singlepoint)

– Copy and paste to Excel, manipulate data

– Paste to SysCAD, solve and observe

– Copy to Excel, back to Studio

– Repeat

• October 2016: OLI Simulation User Conference

– Alliance Partner

– Invitation to present


Implementation

• The two toolkits:

– OLI Engine: Developer Edition

– SysCAD Model Developers Kit (SMDK)

• OLI library with API, documentation and example

• SysCAD libraries designed for creating add-ons

– Unit operations

– Property models


Demonstrate by example

• Practical example for testing and comparison

• Potash example from 2014 OLI Conference

• SysCAD is used in Potash with industry properties (D’Ans)


OLI Potash Chemical Model


Development Walk ThroughGetting Started

• What can we achieve in a couple of weeks?

• 1) Can we call OLI Engine from SysCAD?

– Use OLI example and documentation

– Implement hardwired call from SysCAD add-on

• 2) Need to select chemistry model?

– Manage initialisation and licensing

– Manage selecting and loading chemistry model


SysCAD - Chemical Model


Development Walk ThroughFirst OLI Calculations

• 3) Can we enter some data and perform a calculation?

– Implement a stand alone “Test Sample” Unit

– Compare OLI Studio Isothermal calculation


Sample Calculation in SysCAD


Development Walk ThroughMapping Species

• 4) How do we map species?

– SysCAD generally uses Molecular (Apparent) Species

– Manually map SysCAD Stream to OLI InFlows (Components)

– Manually map OLI OutFlows to SysCAD Streams

• 5) Improving species mapping?

– Manage changing the chemistry model

– Implement automated matching using MW

• 6) What to do with mismatches in mapping?

– Expand SysCAD Species list

– Bypass for OLI Calculations


Chemistry Model in SysCAD and Mapping Species


Development Walk ThroughFirst Calulations in Flowsheet

• 7) First Unit operation in a stream?

– Map Stream to Inflows

– Call OLI IsoThermal calculation

– Display Equilibrium Composition and calculation parameters

– Side calculation for measurement displays, no alteration in outlet stream


Stream Side Calculation


Development Walk ThroughFirst Useful Unit Operation

• 7) Adjust outflows (Reactor)?

– OLI gives Equilibrium composition

– Mass balance only possible if OutFlow species are mapped

• 8) What about energy balance?

– Fixed temperature calculation : report heat flow

– Iterative calculations to find temperature with zero heat flow


OLI Unit in SysCAD Flowsheet


Development Walk ThroughAdded functionality in OLI Reactor

• 9) What about heat exchange?

– Account for heat loss and/or heat exchanger

• 10) Implement in flowsheet?

– Now have “OLI Reactor” block to use for multitude of purposes

– Crashes with multiple units – had to implement thread locking

– Ongoing usability improvements

• 11) Beta version good to go?

Demonstrate and issue Beta version


KWA Kenwalt Australia

What next?

• Still learning OLI capabilities and Engine interface

• Expecting practical use on a few projects in coming months

• Future development:

– Use Core interface (speed and features)

– Investigate implementation of properties model in addition to unit operations

– Based on project driven requests

– Ongoing improvements in usability and features



Conclusions

• OLI and SysCAD Development tools allowed rapid effective integration of products

• Pleased to have SysCAD as new OLI Alliance Partner

• From OLI - Thread safe Engine would be a significant enhancement

• Thank You – Questions



Thank You

• Questions?