Aspen Plus: Физические свойства для инженеров-технологов (Aspen Plus: Select, Use and Modify Property Model Calculations for Improved Accuracy)

Introduction to Flowsheet Simulation

• Identify and explain the need for accurate physical properties by studying a variety of examples
• Introduce basic concepts:
• Thermodynamic properties (density, enthalpy)
• Transport properties (viscosity, )
• Phases (vapor, liquid, liquid-liquid)
• Demonstrate how to start and navigate in Aspen Properties user interface

 Ideal Gas and Ideal Liquid

• Explain and review the IDEAL property method
• Ideal Gas Law for the vapor phase
• Calculation of the vapor phase enthalpy
• Calculation of the liquid phase properties
• Introduce the concept of routes and models
• Workshop: Analyze pure component properties using the Property Analysis tool

Physical Property Parameters

• Explain and review physical property parameters and databanks
• Workshop: Retrieve and display parameters for the IDEAL model

Property Sets and Property Analysis

• Show how to use interactive property analysis
• Explain how to create and use property sets
• Show how to create and use property analysis tables
• Workshop:  Analyse properties of a mixture using the Generic Property Analysis

Activity Coefficient Models

• Explain how activity coefficient models may be used to model large deviations from ideal mixture in liquid phase
• Workshop: Use mixture property interactive analysis tools and display binary and ternary equilibrium diagrams  

UNIFAC

• Explain the UNIFAC method
• Basis
• Limitations and applicability
• Workshop: Demonstrate how to create user defined UNIFAC groups

Henrys Law

• Explain how to use Henrys law with activity coefficient models
• Workshop: Analyze solubility for supercritical components (optional)

Equation of State

• Discuss Issues in Modeling Non-Ideal Systems Using Equations of State, Corresponding States Principle, Mixing Rules, Alpha function
• Discuss special equation of state for water/steam or specific mixtures
• Workshop:  Show how an equation of state can be used to model the expansion of a gas mixture through a valve

Advanced Equation of State

• Identify how some equation of states can be extended to improve predictions for strongly non-ideal mixtures (e.g. PSRK predictive Soave-Redlich-Kwong EOS)
• Explain how vapor phase association models may be used with activity coefficient models (e.g. NRTL-HOC)
• Discuss PC-SAFT EOS
• Workshop: Use PC-SAFT EOS for VLE and LLE calculations

Selection of Physical Property Methods

• Explain how to select the thermodynamic model based on the type of components and conditions
• Review the different levels at which property methods can be specified in a simulation
• Workshop: Demonstrate how to select the appropriate property method for different systems

Electrolyte Property Methods

• Review the ELECNRTL activity coefficient model for electrolyte systems
• Explain how to set up properties for a simulation using electrolytes
• Workshop: Evaluate liquid-vapor equilibrium for an electrolyte mixture

Data Regression

• Explain the basics of Data Regression in Aspen Plus  and how to setup a Data Regression Run
• Workshop: Regress Pure Component Data

Data Regression of Mixture Data

• Explain how to perform Mixture or Phase Equilibrium Data Regression and how to interpret regression results
• Workshop: Regress vapor-liquid, liquid-liquid and salt saturation experimental data

Property Constant Estimation

• Describe the purpose of the Property Estimation
• Explain the workflow to use the Property Estimation to define the molecular structure of components and specify the estimation methods
• Explain the methods available to estimate binary parameters
• Workshop: Estimate pure component parameters and binary interaction parameters s

Customizing Property Methods

• Explain how to customize physical property methods
• Workshops: Change various settings in property methods