Transcript OLI Systems, Inc

Robert Young
ESP and the OLI Engine Updates
24th Conference October 23-24, 2007
THINK SIMULATION!
Opening new doors with Chemistry
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
THINK
SIMULATION
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
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SIMULATION
Engine Updates
Mixed-Solvent Electrolytes (MSE)
■ Pseudo-components added
■ Expanded databank
◊1328 species
◊Organics added
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SIMULATION
Engine Updates (cont)
Petroleum pseudo components
■ A single pseudo-component
■ Assays
◊ASTM D86 data
◊D1160 data
◊D2887 data
◊TBP data
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SIMULATION
Engine Updates (cont)
Kinetics
■ Reference State Equilibrium Constant
◊Mole fraction reference state
◊K-Value made available to Kinetic Interface
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SIMULATION
Engine Updates (cont)
Transport Properties
■ Gas Phase
◊Added Viscosity
◊Added Thermal Conductivity
◊Added Diffusivities
■ Liquid Phase
◊Electrical Conductivity
◊Diffusivities
◊Viscosity
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SIMULATION
Engine Updates (cont)
Calculation speed
■ Added MSE two liquid phase initializer
■ Added solid inclusion initializer
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SIMULATION
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
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SIMULATION
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
THINK
SIMULATION
THINK
SIMULATION
Column Stage
Q
L j 1
Vj
x i , j 1
yi , j
H jL 1
H Vj
T jL 1
T jV
Vapor side draw
SDiV, j
QVj
L
j
Ni
Liquid
Vapor
E
FDiL, j ; H jL
Liquid side draw
L
i, j
SD
FDiV, j ; H Vj
Lj
V j 1
xi , j
y i , j 1
H jL
H Vj 1
T jL
T jV 1
Mass Transfer Limited Tower
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SIMULATION
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
Mass Transfer Limited Tower
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SIMULATION
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
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.
THINK
SIMULATION
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)
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SIMULATION
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)
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SIMULATION
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)
THINK
SIMULATION
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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SIMULATION