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ESP and the OLI Engine Updates

Robert Young. ESP and the OLI Engine Updates. What is the OLI Engine?. Non-linear equation solver Newton-Raphson method Thermodynamic property methods Helgeson equation of state Bromley activity coefficient model MSE activity coefficient model SRK equation of state.

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ESP and the OLI Engine Updates

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  1. Robert Young ESP and the OLI Engine Updates

  2. What is the OLI Engine? • Non-linear equation solver • Newton-Raphson method • Thermodynamic property methods • Helgeson equation of state • Bromley activity coefficient model • MSE activity coefficient model • SRK equation of state

  3. What Products Use the OLI Engine? • Every OLI product uses the ENGINE • ESP • All of the Analyzers • All Alliance Products • UniSim OLI • PROII Electrolytes • Aspen OLI • HYSYS OLI • ScaleChem • ProChem

  4. Engine Updates • Mixed-Solvent Electrolytes (MSE) • Pseudo-components added • Expanded databank • 1328 species • Organics added

  5. Engine Updates (cont) • Petroleum pseudo components • A single pseudo-component • Assays • ASTM D86 data • D1160 data • D2887 data • TBP data

  6. Engine Updates (cont) • Kinetics • Reference State Equilibrium Constant • Mole fraction reference state • K-Value made available to Kinetic Interface

  7. Engine Updates (cont) • Transport Properties • Gas Phase • Added Viscosity • Added Thermal Conductivity • Added Diffusivities • Liquid Phase • Electrical Conductivity • Diffusivities • Viscosity

  8. Engine Updates (cont) • Calculation speed • Added MSE two liquid phase initializer • Added solid inclusion initializer

  9. What is ESP? • Environmental Simulation Program • Plant flowsheeting program • Sequential modular approach • Available unit operations • Mixer and Splitters • Distillation Columns • Reactors (including Bio-reactors) • Neutralizers • Heat Exchangers • Compressors

  10. ESP Updates • Mass Transfer Limited Tower • Calculation of Mass Transfer Coefficients • Packed Towers (Billet and Schultes) • Sieve Trays • Bubble Cap • Valve Trays • User Added Mass Transfer Coef routine • Calculation of Heat transfer Coefficient

  11. Column Stage Vapor side draw Liquid side draw

  12. Mass Transfer Limited Tower • Vapor Moles Transferred • Ni=VMTCi*Area*(YBi-YIi) • Liquid Moles Transferred • Ni=LMTCi*Area*(XIi-XBi) • Where: • Ni - moles transferred • VMTCi - Vapor side mass transfer coefficient • LMTCi - Liquid side mass transfer coefficient • Area - Interfacial area

  13. Mass Transfer Limited Tower • Vapor – Liquid Equilibrium • YIi = Ki*Xii • Mass Transfer Coefficient Calculation • Packed towers • Billet and Schultes • TransIChemE, Vol 77 • September 1999 • Mass transfer coefficient is a function of: • Packing type and size • Transport properties • Phase density and flow rate

  14. OLI Alliance Engine • What is the OLI Alliance Engine? • Callable Interface to OLI Engine • Supports typical flash types • Temp, Press • Bubble point • Dew point • Vapor, Press • Enthapy, Press • Etc.

  15. OLI Alliance Engine (Cont) • Honeywell’s Unisim • Supports both Aqueous and MSE models • Contains OLI tower program • Contains OLI mass transfer tower • User Interface for OLI PRO • Pseudo components and Assays • Last update Sept 2007 (OLI version 7.0)

  16. OLI Alliance Engine (Cont) • Aspen Plus and OLI • Supports Both Aqueous and MSE models • Contains OLI Tower program • Pseudo components and assays • OLI Engine is a Property Option in Aspen • Last update July 2007 (OLI version 7.0)

  17. OLI Alliance Engine (Cont) • Aspen HYSYS and OLI • Supports Aqueous model • Contains OLI Tower program • Implemented as a fluid package • Last update 2003 (OLI version 6.6)

  18. OLI Alliance Engine (Cont) • SimSci PRO/II • Contains both Aqueous and MSE models • Last update July 2006 (OLI version 7.0)

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