Aspen Plus: Моделирование процессов (Introduction to Process Modeling using Aspen Plus)

Introduction to Flowsheet Simulation

• Introduce general flowsheet simulation concepts and Aspen Plus features
• Review the benefits of process modeling using Aspen Plus
• Discuss the approaches to flowsheet simulations

User Interface

• Become comfortable and familiar with the Aspen Plus graphical user interface

Property Environment

• Develop a working knowledge of the Aspen Plus Properties Environment
• Learn to enter Components and Property Method for a process flowsheet
• Review the save options for Aspen Plus models
• Workshop: Begin building a flowsheet – Enter components and property method.

Simulation Environment

• Develop a working knowledge of the Aspen Plus Simulation Environment
• Build a process flowsheet and enter stream and block information in an Aspen Plus simulation
• Run the simulation

Flowsheet Results

• Review features for viewing simulation results
• Discuss options to enhance flowsheet output
• Workshop: Finish building a flowsheet - Add the process and feed stream conditions to a flowsheet, run and review results

Unit Operation Models

• Review major types of unit operation models
• Explore flowsheet handling techniques

Modeling Distillation Tower (RadFrac)

• Enter the minimum input required for the RadFrac fractionation model
• Implement design specifications, stage efficiencies and column sizing
• Workshop: Set up a methanol – water distillation tower model, implement efficiencies and size the column

Modeling Reactors (Simple and Rigorous)

• Introduce the various classes of reactor models available
• Explore details of the balanced based reactors
• Review details of the equilibrium and kinetic based reactors
• Workshop: Model a combustion process using simple reactor models
• Workshop: Compare the uses of different reactor types to model an ethyl-acetate reactor

Modeling Chemical Plant – Cyclohexane Production Workshop

• Apply acquired skills to build a cyclohexane production flowsheet
• Workshop: Create a flowsheet to model a cyclohexane production process

Selecting Physical Property Models

• Key considerations in choosing a property method and review physical property parameters
• Introduction to Aspen Properties Enterprise Database (APED)
• Learn how to choose an appropriate Property Method to represent single chemical or mixture
• Workshop: Simulate a two-liquid phase settling tank

Sensitivity Analysis

• Become familiar with referencing flowsheet variables (accessing variables) which is used in sensitivity analyses, design specifications, calculator blocks and optimization
• Use a sensitivity analysis to study relationships between process variables
• Workshop: Use a sensitivity analysis to study the effect of the recycle flowrate on the reactor duty

Design Specification

• Introduce the use of design specifications to meet process design requirements
• Workshop: Use a design specification in the example flowsheet to fix the heat load on the reactor by varying the recycle flowrate

Calculator Blocks

• Introduce usage of Microsoft Excel and Fortran Calculator blocks.
• Workshop: Use a Calculator block to maintain the methane: water ratio in the feed to a reformer

Modeling Heat Exchangers

• Review the Aspen Plus models used for modeling Heat Exchangers
• Workshop: Compare the simulation of a heat exchanger using three methods: two Heaters connected with a Heat stream, a Heater using a Utility, and a detailed HeatX

Modeling Pumps, Compressors, Valves and Pipes (Pressure Changers)

• Introduce unit operation models used to change pressure, such as Pumps and Compressors, and those which model pressure drop, such as Pipes and Valves
• Workshop: Evaluate compressor performance at different flowrates

Improving Computation Performance Flowsheet Convergences ·

• Introduce the idea of convergence blocks, tear streams and flowsheet sequences
• Workshop: Converge a flowsheet and review results