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Uploaded by: Ebooks Chemical Engineering (https://www.facebook.com/pages/Ebooks-Chemical-Engineering/238197077030)
For More Books, softwares & tutorials Related to Chemical Engineering Join Us @google+: http://gplus.to/ChemicalEngineering @facebook: https://www.facebook.com/AllAboutChemcalEngineering @facebook: https://www.facebook.com/groups/10436265147/ @facebook: https://www.facebook.com/pages/Ebooks-Chemical-
Engineering/238197077030
I t d ti t A PlIntroduction to Aspen PlusShort Courses on Computer Applications for ChE Students
PSE LaboratoryDepartment of Chemical EngineeringDepartment of Chemical Engineering
Nation Taiwan University
What is Aspen PlusWhat is Aspen PlusWhat is Aspen PlusWhat is Aspen Plus
• Aspen Plus is a market‐leading process modeling tool for conceptual design, optimization, and performance monitoring for the chemical, polymer, specialty chemical, metals and minerals, and coal power industries.
What Aspen Plus providesWhat Aspen Plus providesWhat Aspen Plus providesWhat Aspen Plus provides
• Physical Property Models– World’s largest database of pure component and phase equilibrium
data for conventional chemicals electrolytes solids and polymersdata for conventional chemicals, electrolytes, solids, and polymers– Regularly updated with data from U. S. National Institute of Standards
and Technology (NIST)
• Comprehensive Library of Unit Operation Models– Addresses a wide range of solid, liquid, and gas processing equipment
d d l d l f f d– Extends steady‐state simulation to dynamic simulation for safety and controllability studies, sizing relief valves, and optimizing transition, startup, and shutdown policies
– Enables you build your own libraries using Aspen Custom Modeler or programming languages (User‐defined models)
Ref: Aspen Plus® Product Brochure3
More DetailedMore DetailedMore DetailedMore Detailed
• Properties analysis– Properties of pure component and mixtures (Enthalpy, density, viscosity, heat capacity,…etc)
– Phase equilibrium (VLE, VLLE, azeotrope calculation…etc)– Parameters estimation for properties models (UNIFAC method for binary parameters, Joback method for boiling points etc)points…etc)
– Data regression from experimental deta
P i l ti• Process simulation– pump, compressor, valve, tank, heat exchanger, CSTR, PFR, di till ti l t ti l b b filtdistillation column, extraction column, absorber, filter, crystallizer…etc 4
What course Aspen Plus What course Aspen Plus can be employed forcan be employed for
• MASS AND ENERGY BALANCES• PHYSICAL CHEMISTRY• CHEMICAL ENGINEERING THERMODYNAMICS • CHEMICAL REACTION ENGINEERING• CHEMICAL REACTION ENGINEERING• UNIT OPERATIONS• PROCESS DESIGN• PROCESS CONTROL
Introduction to Aspen Plus – Part 1Startup in Aspen Plus
11
Start with Aspen PlusStart with Aspen PlusStart with Aspen PlusStart with Aspen Plus
A Pl U I t fAspen Plus User Interface
12
Aspen Plus StartupAspen Plus StartupAspen Plus StartupAspen Plus Startup
13
Interface of Aspen PlusInterface of Aspen PlusInterface of Aspen PlusInterface of Aspen Plus
Process Flowsheet WindowsProcess Flowsheet Windows
Model Library (View| Model Library )Model Library (View| Model Library )y ( | y )
Stream
y ( | y )
Status message14
More InformationMore InformationMore InformationMore Information
Help for Commands for Controlling Simulations 15
Data BrowserData BrowserData BrowserData Browser
• The Data Browser is a sheet and form viewer with a hierarchical tree view of the available simulation input, results, and objects that have been defined
16
Status IndicatorsStatus IndicatorsStatus IndicatorsStatus Indicators
17
Basic InputBasic InputBasic InputBasic Input
• The minimum required inputs to run a simulation are:– Setup– Components Property Analysis
– Properties– Streams
Process Simulation– Blocks
Process Simulation
18
SetupSetup –– SpecificationSpecificationSetup Setup –– SpecificationSpecificationRun TypeRun Type
Input mode
19
SetupSetup –– Run TypeRun TypeSetup Setup –– Run TypeRun TypeRun Type Description Use to
A t d l d t A l d t h d t t tAssay Data Analysis A standalone assay data analysis/pseudocomponents generation run
Analyze assay data when you do not want to perform a flowsheet simulation in the same run.
D t R iA standalone data regression run. Can contain
t t t ti ti d t l i
Fit physical property model parameters required by Aspen Plus to measured pure component, VLE LLE d th i t d t A PlData Regression property constant estimation and property analysis
calculations.VLE, LLE and other mixture data. Aspen Plus cannot perform data regression in a Flowsheet run. Prepare a property package for use with Aspen C M d l i h hi d i l
Properties Plus A Properties Plus setup runCustom Modeler, with third party commercial engineering programs, or with your company's in house programs. You must be licensed to use Properties Plus.P f l i b i bl
Property AnalysisA standalone property analysis run. Can contain property constant estimation and assay data analysis calculations.
Perform property analysis by generating tables of physical property values when you do not want to perform a flowsheet simulation in the same runE i h d
Property Estimation A standalone property constant estimation runEstimate property parameters when you do not want to perform a flowsheet simulation in the same run.
A Flowsheet run (including sensitivity studies and
Flowsheet
( g yoptimization). also include the following calculations: Property estimation, Assay data analysis and Property analysis
Cli k “NRTL” d th b ilt i bi tClick “NRTL” and then built-in binary parameters appear automatically if available.
33
Access Properties Models and Access Properties Models and ParametersParameters
Review Databank Data
34
Review Databank DataReview Databank DataReview Databank DataReview Databank DataIncluding:Ideal gas heat of formation at 298.15 KgIdeal gas Gibbs free energy of formation at 298.15 KHeat of vaporization at TBNormal boiling pointStandard liquid volume at 60°FStandard liquid volume at 60 F….
History *.his Text Detailed calculation history and diagnosticmessages
Problem * appdf Binary File containing arrays and intermediate
41
Problem Description
.appdf Binary File containing arrays and intermediateconvergence information used in the simulationcalculations
File Type CharacteristicsFile Type CharacteristicsFile Type CharacteristicsFile Type Characteristicsf l• Binary files
– Operating system and version specific– Not readable not printableNot readable, not printable
• ASCII files– Transferable between operating systems– Upwardly compatible– Contain no control characters, “readable”
N i d d b i d– Not intended to be printed• Text files
– Transferable between operating systemsTransferable between operating systems– Upwardly compatible– Readable, can be edited– Intended to be printed
42
Introduction to Aspen Plus – Part 2Properties Analysis in Aspen Plus
43
Overview of Property AnalysisOverview of Property AnalysisOverview of Property AnalysisOverview of Property AnalysisUse this form To generateUse this form To generate
Pure Tables and plots of pure component properties as a function of temperature and pressure
Binary Txy, Pxy, or Gibbs energy of mixing curves for a binary system
Residue Residue curve maps
Ternary maps showing phase envelope tie lines and azeotropes of ternaryTernary Ternary maps showing phase envelope, tie lines, and azeotropes of ternary systems
Azeotrope This feature locates all the azeotropes that exist among a specified set of componentscomponents.
Ternary MapsTernary diagrams in Aspen Distillation Synthesis feature: Azeotropes, Distillation boundary, Residue curves or distillation curves, Isovolatility curves, Ti li V B ili iTie lines, Vapor curve, Boiling point
Generic
Tables and plots of properties of either multi‐phase mixtures (for example, VLE, VLLE, LLE) resulting from flash calculations, or single‐phase mixtures
(Generic without flash calculations. Properties analysis of multi‐components (more than three) is also included.
44
RemindingRemindingRemindingReminding
• When you start properties analysis, you MUST specify components , properties model, and p y p p pcorresponding model parameters. (Refer to Part I)Part I)
45
Properties AnalysisProperties Analysis –– Pure ComponentPure ComponentProperties Analysis Properties Analysis –– Pure Component Pure Component Use this form To generate
Pure Tables and plots of pure component properties as a function of temperature and pressure
Binary Txy, Pxy, or Gibbs energy of mixing curves for a binary system
Residue Residue curve maps
Ternary Ternary maps showing phase envelope, tie lines, and azeotropes of ternary systemsy systems
Azeotrope This feature locates all the azeotropes that exist among a specified set of components.
Ternary MapsTernary diagrams in Aspen Distillation Synthesis feature: Azeotropes, Distillation boundary, Residue curves or distillation curves, Isovolatility curves, Tie lines, Vapor curve, Boiling point
Generic
Tables and plots of properties of either multi‐phase mixtures (for example, VLE, VLLE, LLE) resulting from flash calculations, or single‐phase mixtures without flash calculations. Properties analysis of multi‐components (more than three) is also included.
46
Properties AnalysisProperties Analysis –– Pure ComponentPure ComponentProperties Analysis Properties Analysis –– Pure Component Pure Component
47
Available PropertiesAvailable PropertiesAvailable PropertiesAvailable PropertiesProperty (thermodynamic) Property (transport)
Example1: Calculation Results of CPExample1: Calculation Results of CPExample1: Calculation Results of CPExample1: Calculation Results of CP
Data results 50
Example2: H (Enthalpy)Example2: H (Enthalpy)Example2: H (Enthalpy)Example2: H (Enthalpy)
1. Select property (H)4. Specify range of temperature
2. Select phase
5. Specify pressure
3. Select component6 S l t t th d6. Select property method
7. click Go to generate the results51
Example: Calculation Results of HExample: Calculation Results of HExample: Calculation Results of HExample: Calculation Results of H
Data results
52
Properties AnalysisProperties Analysis –– Binary ComponentsBinary ComponentsProperties Analysis Properties Analysis –– Binary ComponentsBinary ComponentsUse this form To generate
Pure Tables and plots of pure component properties as a function of temperature and pressure
Binary Txy, Pxy, or Gibbs energy of mixing curves for a binary system
Residue Residue curve maps
Ternary Ternary maps showing phase envelope, tie lines, and azeotropes of ternary systemsy systems
Azeotrope This feature locates all the azeotropes that exist among a specified set of components.
Ternary MapsTernary diagrams in Aspen Distillation Synthesis feature: Azeotropes, Distillation boundary, Residue curves or distillation curves, Isovolatility curves, Tie lines, Vapor curve, Boiling point
Generic
Tables and plots of properties of either multi‐phase mixtures (for example, VLE, VLLE, LLE) resulting from flash calculations, or single‐phase mixtures without flash calculations. Properties analysis of multi‐components (more than three) is also included.
Txy Temperature‐compositions diagram at constant pressure
Pxy Pressure‐compositions diagram at Pxy constant temperatureGibbs energy of mixing diagram as a function of liquid compositions. The A Ph i l P S hiGibbs energy of mixing Aspen Physical Property System uses this diagram to determine whether the binary system will form two liquid phases at a given temperature and pressureat a given temperature and pressure.
Example: TExample: T XYXYExample: TExample: T‐‐XYXY1. Select analysis type (Txy) 2. Select phase (VLE, VLLE)y yp ( y)
2. Select two component 5. Specify pressure
3. Select compositions basis
6 Select property method4. Specify composition range
6. Select property method
7. click Go to generate the results
Example: calculation result of TExample: calculation result of T XYXYExample: calculation result of TExample: calculation result of T‐‐XYXY
Shortcoming of Binary AnalysisShortcoming of Binary AnalysisShortcoming of Binary AnalysisShortcoming of Binary Analysis
120Water-BuOH
100
110
90
100
T (o C
)
?0.0 0.2 0.4 0.6 0.8 1.0
70
80 ?
Bi A l i t t LLE d t b l t
Mole Fraction (Water)
Binary Analysis cannot generate LLE data below azeotrope.
Property AnalysisProperty Analysis –– GenericGenericProperty Analysis Property Analysis –– GenericGenericUse this form To generate
Pure Tables and plots of pure component properties as a function of temperature and pressure
Binary Txy, Pxy, or Gibbs energy of mixing curves for a binary system
Residue Residue curve maps
Ternary Ternary maps showing phase envelope, tie lines, and azeotropes of ternary systemsy systems
Azeotrope This feature locates all the azeotropes that exist among a specified set of components.
Ternary MapsTernary diagrams in Aspen Distillation Synthesis feature: Azeotropes, Distillation boundary, Residue curves or distillation curves, Isovolatility curves, Tie lines, Vapor curve, Boiling point
Generic
Tables and plots of properties of either multi‐phase mixtures (for example, VLE, VLLE, LLE) resulting from flash calculations, or single‐phase mixtures without flash calculations. Properties analysis of multi‐components (more than three) is also included.
1 Select three component4. Select phase (VLE, LLE)
1. Select three component
5. Specify pressure2. Specify number of tie line
3. Select property method6. Specify temperature
(if LLE is slected)
7. click Go to generate the results
Calculation Result of Ternary Map (LLE)Calculation Result of Ternary Map (LLE)Calculation Result of Ternary Map (LLE)Calculation Result of Ternary Map (LLE)
D t ltData results
Property AnalysisProperty Analysis –– GenericGenericProperty Analysis Property Analysis –– GenericGenericUse this form To generate
Pure Tables and plots of pure component properties as a function of temperature and pressure
Binary Txy, Pxy, or Gibbs energy of mixing curves for a binary system
Residue Residue curve maps
Ternary Ternary maps showing phase envelope, tie lines, and azeotropes of ternary systemsy systems
Azeotrope This feature locates all the azeotropes that exist among a specified set of components.
Ternary MapsTernary diagrams in Aspen Distillation Synthesis feature: Azeotropes, Distillation boundary, Residue curves or distillation curves, Isovolatility curves, Tie lines, Vapor curve, Boiling point
Generic
Tables and plots of properties of either multi‐phase mixtures (for example, VLE, VLLE, LLE) resulting from flash calculations, or single‐phase mixtures without flash calculations. Properties analysis of multi‐components (more than three) is also included.
Generic analysis is used if properties analysis of mixture is performed.65
When to Use Generic AnalysisWhen to Use Generic AnalysisWhen to Use Generic Analysis When to Use Generic Analysis
Enthalpy of Mixtures?Water-BuOH
100
110
120
80
90
100
T (o C
)
LLE? Specific composition?660.0 0.2 0.4 0.6 0.8 1.0
Specify PropertySpecify Property‐‐Sets for Sets for Calculation ResultsCalculation Results
71
Add New PropertyAdd New Property Set (UserSet (User Defined)Defined)Add New PropertyAdd New Property‐‐Set (UserSet (User‐‐Defined)Defined)
Select Physical Property
Description72
Add New PropertyAdd New Property Set (cont’d)Set (cont’d)Add New PropertyAdd New Property‐‐Set (cont d)Set (cont d)If the system requires VLLE calculationIf the system requires VLLE calculation…
Example 2: Example 2: Calculation of Calculation of LLE LLE for for Binary systemBinary system
120Water-BuOH
100
110
90
100
T (o C
)
80
0.0 0.2 0.4 0.6 0.8 1.070
Mole Fraction (Water)
81
Add New PropertyAdd New Property Set (cont’d)Set (cont’d)Add New PropertyAdd New Property‐‐Set (cont d)Set (cont d)
Select “Vapor” “1st liquid” “2nd liquid”
Specify System Variable and PropertySpecify System Variable and Property SetSetSpecify System, Variable and PropertySpecify System, Variable and Property‐‐SetSet1 2
Property AnalysisProperty Analysis –– Conceptual DesignConceptual DesignProperty Analysis Property Analysis –– Conceptual DesignConceptual DesignUse this form To generate
(Optional)
Pure Tables and plots of pure component properties as a function of temperature and pressure
Binary Txy Pxy or Gibbs energy of mixing curves for a binary systemBinary Txy, Pxy, or Gibbs energy of mixing curves for a binary system
Residue Residue curve maps
Ternary Ternary maps showing phase envelope, tie lines, and azeotropes of ternary Ternary y p g p p , , p ysystems
Azeotrope This feature locates all the azeotropes that exist among a specified set of components. p
Ternary MapsTernary diagrams in Aspen Distillation Synthesis feature: Azeotropes, Distillation boundary, Residue curves or distillation curves, Isovolatility curves, Tie lines Vapor curve Boiling pointTie lines, Vapor curve, Boiling point
Generic
Tables and plots of properties of either multi‐phase mixtures (for example, VLE, VLLE, LLE) resulting from flash calculations, or single‐phase mixtures without flash calculations Properties analysis of multi‐components (morewithout flash calculations. Properties analysis of multi‐components (more than three) is also included.
• Conceptual design enables the user to:1. Locate all the azeotropes (homogeneous and
heterogeneous) present in any multicomponent mixture2. Automatically compute distillation boundaries and
id f t i tresidue curve maps for ternary mixtures3. Compute multiple liquid phase envelopes (liquid‐liquid
and vapor liquid liquid) for ternary mixturesand vapor‐liquid‐liquid) for ternary mixtures4. Determine the feasibility of splits for distillation columns
Reveal Model LibraryReveal Model LibraryReveal Model LibraryReveal Model Library
View|| Model LibraryView|| Model Libraryor press F10
100
Model Library: Mixer/SplitterModel Library: Mixer/SplitterModel Library: Mixer/SplitterModel Library: Mixer/Splitter
Model Description Purpose Use for
Mixer Stream mixer Combines multiple streams into one stream
Mixing tees. Stream mixing operations. g pAdding heat streams. Adding work streams
FSplit Stream splitter Divides feed based on splits Stream splitters BleedFSplit Stream splitter Divides feed based on splits specified for outlet streams
Stream splitters. Bleed valves
SSplit Substream splitter Divides feed based on splits Stream splitters PerfectSSplit Substream splitter Divides feed based on splits specified for each substream
Control valves and pressure changersdrop valve changers
Pipe Single segment pipe
Models pressure drop through a single segment of pipe
Pipe with constant diameter (may include fittings)
Pipeline Multiple segment Models pressure drop through a Pipeline with multiplePipeline Multiple segment pipeline
Models pressure drop through a pipe or annular space
Pipeline with multiple lengths of different diameter or elevation103
Adding a MixerAdding a MixerAdding a MixerAdding a Mixer
Click “one of icons” d th li k i th fl h t i dand then click again on the flowsheet window
Remark: The shape of the icons are meaningless
104
Adding Material StreamsAdding Material StreamsAdding Material StreamsAdding Material Streams
Click “Materials” and then click again on the flowsheet windowagain on the flowsheet window
105
Adding Material Streams (cont’d)Adding Material Streams (cont’d)Adding Material Streams (cont d)Adding Material Streams (cont d)
When clicking the mouse on the flowsheet windowWhen clicking the mouse on the flowsheet window,arrows (blue and red) appear.
106
Adding Material Streams (cont’d)Adding Material Streams (cont’d)Adding Material Streams (cont d)Adding Material Streams (cont d)
When moving the mouse on the arrows, some description appears.
Blue arrow: Water decant for Free water of dirty water
Red arrow(Left) Feed (Required; one ore more if mixing material
Red arrow(Right): Product (Required; if mixing material streams)of dirty water. if mixing material
streams)mixing material streams)
107
Adding Material Streams (cont’d)Adding Material Streams (cont’d)Adding Material Streams (cont d)Adding Material Streams (cont d)
After selecting “Material Streams”, click and pull a stream line.Repeat it three times to generate three stream linesRepeat it three times to generate three stream lines.
108
Reconnecting Material Streams Reconnecting Material Streams (Feed Stream)(Feed Stream)
Right Click on the stream and select Reconnect Destination
109
Reconnecting Material Streams Reconnecting Material Streams (Product Stream)(Product Stream)
Right Click on the stream and select Reconnect Sourceselect Reconnect Source
You must specify two of the following conditions:TemperaturepPressureVapor fraction
You can enter stream composition in terms of component flows, fractions, or concentrations.
If you specify component fractions, you must specify the total mole, If you specify component fractions, you must specify the total mole, mass, or standard liquid volume flow.
Specifying Input of MixerSpecifying Input of MixerSpecifying Input of MixerSpecifying Input of Mixer
Right Click on the block and select Input
114
Specifying Input of Mixer (cont’d)Specifying Input of Mixer (cont’d)Specifying Input of Mixer (cont d)Specifying Input of Mixer (cont d)
Specify Pressure and valid phase
The corresponding description about this blank:Outlet pressure if value > 0Pressure drop if value ≦ 0
115
Run SimulationRun SimulationRun SimulationRun Simulation
Click ► to run the simulation
Run Start or continue calculations
Step Step through the flowsheet one block at a time
Stop Pause simulation calculations
Reinitialize Purge simulation results
Check “simulation status”“Required Input Complete” means the input is ready to run simualtionq p p p y
116
Status of Simulation ResultsStatus of Simulation ResultsStatus of Simulation Results Status of Simulation Results
Message Means
Results available The run has completed normally, and results are presentpresent.
Results with warnings
Results for the run are present. Warning messages were generated during the l l i Vi h C l P l Hiesu ts t a gs calculations. View the Control Panel or History
for messages.
Results for the run are present. Error messages Results with errors were generated during the calculations. View the
Control Panel or History for messages.
Results for the run are present, but you have
Input Changed
p , ychanged the input since the results were generated. The results may be inconsistent with the current input.
117
Control PannelControl PannelControl PannelControl Pannel
Click here
1.A message window showing the progress of the simulation by displaying the most recent messages from the calculationsrecent messages from the calculations
2.A status area showing the hierarchy and order of simulation blocks and convergenceorder of simulation blocks and convergence loops executed
• There are two degrees of freedom to manipulate d ll ddistillate composition and bottoms composition to manipulate the distillate andRR ? manipulate the distillate and bottoms compositions.
• If the feed condition and theIf the feed condition and the number of stages are given, how much of RR and QR are QR ?required to achieve the specification.
Temperature ProfilesTemperature ProfilesTemperature ProfilesTemperature Profiles
INTRODUCTION TO ASPEN PLUSINTRODUCTION TO ASPEN PLUSSome Tips and Others
202
Tips: NextTips: NextTips: NextTips: Next
Invokes the Aspen Plus expert system. Guides you through the steps required to complete your simulation.p q p y
Status message MeaningFlowsheet Not Complete
Flowsheet connectivity is incomplete. To find out why, click the Next button in the toolbar.
Required Input Not C l
Input specifications for the run are incomplete. Click Next h lb fi d h l h iComplete on the toolbar to find out how to complete the input
specifications, and to go to sheets that are incomplete.
203
Example: “NEXT”Example: “NEXT”Example: NEXTExample: NEXT
204
Tips: “What’s this”Tips: “What’s this”Tips: What s thisTips: What s this
Cli k “↖?” d th li k h d ’t kClick “↖?” and then click where you don’t know
?
205
Tips: “What’s this”Tips: “What’s this”Tips: What s thisTips: What s this
?
206
Tips: WindowTips: WindowTips: WindowTips: Window
If you are using You shouldWorkbook mode Click the Process Flowsheet tabFlowsheet as Wallpaper Click the flowsheet in the backgroundp p gNormal View Select the Process Flowsheet window
207
Help TopicsHelp TopicsHelp TopicsHelp Topics
Go to “Help”pSelect “Help Topics”
208
Help TopicsHelp TopicsHelp TopicsHelp Topics
U it O ti M d l R f M lUnit Operation Model Reference ManualPhysical Property Methods and ModelsPhysical Property Data Reference Manual
209
Help TopicsHelp TopicsHelp TopicsHelp TopicsCalculation of Properties Using an Equation-of-State Property Method
210
File Formats in Aspen PlusFile Formats in Aspen PlusFile Formats in Aspen PlusFile Formats in Aspen Plus
File Type Extension Format Description
Document *.apw Binary File containing simulation input and results andi t di t i f tiintermediate convergence information