View source for Process-Simulation-using-DWSIM/C2/Flash-Separator/English

'''Title: Flash Separator'''

'''Author: Priyam Nayak'''

'''Keywords: '''DWSIM''', '''Material stream, simulation, compounds, thermodynamic package, unit systems, flash separator, gas-liquid separator, operating conditions, separation pressure, video tutorial.



{| border =1
|- 
|| '''Visual Cue'''
|| '''Narration'''
|- 
|| '''Slide Number 1'''


'''Title Slide'''



|| Welcome to this spoken tutorial on''' '''simulating a '''Flash Separator''' in DWSIM.
|- 
|| '''Slide Number 2'''


'''Learning Objectives'''
|| In this tutorial, we will learn to:
* Simulate a '''Flash Separator'''
* Define Operating Conditions for a '''Flash Separator'''


|-
|| '''Slide Number 3'''

'''System Requirements'''
|| This tutorial is recorded using
* '''DWSIM version 9.0.2'''
* '''Windows 11 OS'''


But, this process is identical in '''Linux, Mac OS X, '''or '''FOSSEE OS on ARM'''.
|-
|| '''Slide Number 4'''

'''Pre-requisites'''
|| To practice this tutorial, you should know to
* Add components to a '''flowsheet.'''
* Select '''thermodynamic''' packages
* Specify the properties of a '''material stream'''


|- 
|| '''Slide Number 5'''


'''Problem Statement'''


|| We will simulate a '''flash separator,''' as shown in the figure.


This is to determine the '''exit composition '''of vapor and liquid streams.


All the necessary feed streams and operating conditions are mentioned.


Use the '''Peng-Robinson''' property package.
|- 
|| Switch to '''DWSIM. '''
|| I have opened the '''DWSIM''' interface.
|- 
|| '''File''' >> '''New Chemical Process Model'''
|| Click on '''File '''on the menu bar.

Select '''New Chemical Process Model'''.
|- 
|| Point to '''Simulation Configuration Wizard window'''

''' '''Click the '''Next button.'''
|| A '''Simulation Configuration Wizard''' window appears.


Click the '''Next '''button on the lower right corner of the window.
|- 
|| Point to '''Compounds''' tab

Type '''Hydrogen''' in the search bar

Check the check box under the '''Added '''column.

'''Point to Added Compounds'''
|| We are now in the '''Compounds''' tab.

We will add the compounds present in the flowsheet.

Type '''Hydrogen''' in the search bar located at the bottom of the '''Compounds''' tab.

Under '''Added''' column, check the checkbox for '''Hydrogen'''.


'''Hydrogen''' is added to the simulation as displayed against the '''Added Compounds'''.
|- 
|| Type '''Methane '''in the search tab
|| Next, we will add '''Methane.'''
|- 
|| Type '''Benzene '''in the search tab
|| Similarly, add '''Benzene.'''
|- 
|| Type '''Toluene''' in the search bar
|| Then add '''Toluene.'''
|- 
|| Point to '''Added Compounds'''.
|| All the compounds required in this simulation are added. 

It can be seen in the '''Added Compounds'''.
|-
|| Click on the '''Next '''button at the bottom.
|| Click on the '''Next '''button at the bottom to continue.
|- 
|| Point to '''Property Packages'''

'''Property Packages''' >> '''Available Property Package

>> Peng-Robinson (PR).'''

Click on '''Add.'''

'''Added Property Package >> Peng- Robinson (PR)'''
|| Now comes '''Property Packages.'''

From the '''Available Property Packages''', 

click on '''Peng-Robinson (PR).'''

Then click on '''Add.'''

'''Peng-Robinson (PR)''' has been added under '''Added Property Packages.'''
|-
|| Click on the '''Next '''button at the bottom.
|| Click on the '''Next '''button at the bottom to continue.
|- 
|| '''System of Units''' >> '''C5'''
|| The next option is the '''System of Units.'''

We will''' '''select '''C5.'''

This has the desired system of units according to our problem statement.
|-
|| Click on the '''Next '''button at the bottom.
|| Click on the '''Next '''button at the bottom to continue.
|- 
|| '''Behavior''' >> '''Next'''
|| We will not change anything here.


Click on the '''Next''' button at the bottom.
|- 
|| '''Undo/Redo Operation''' >> '''Finish'''
|| We will not change anything here.

Click on the '''Finish''' button at the bottom.

This completes configuring the simulation.
|- 
|| Point to '''Object Palette'''

Click on '''Separators/Tanks''' section.

Click and drag '''Gas-Liquid Separator''' to the flowsheet

|| Now let us add a '''Flash Separator'''. 

Go to the '''Separators/Tanks''' section in the '''Object Palette'''. 

It is located at the right side of the flowsheet window.

Scroll down a little to see '''Gas-Liquid Separator.'''

Drag and drop '''Gas-Liquid Separator '''to the flowsheet.

The '''Gas-liquid Separator''' in '''DWSIM''' can be used as a flash separator and a decanter.
|- 
|| Point to '''Gas-Liquid Separator''' added to the flowsheet.

Point to material Stream '''1'''.

Point to Material Stream '''2'''.

Point to Material Stream '''3'''.
|| This is the '''Gas-Liquid Separator'''. 

It has 3 material streams auto-connected to its connection ports. 

Material Stream named '''1''' enters the '''Gas-Liquid Separator''' as feed.

Material Stream named '''2''' leaves the '''Gas-Liquid Separator '''as a vapor product.

Material Streams named '''3''' leaves the '''Gas-Liquid Separator''' as a liquid product.
|- 
|| '''Click >> 1 >> 

1 (Material Stream) Property Editor Window.'''

'''Information''' >> '''General Info''' >> 

'''Object''' >> '''Feed'''
|| Now click on the Material Stream named '''1'''. 

In the '''Object''' field, under '''General Info''' section, rename '''1 '''as''' Feed'''.
|- 
|| 
|| Now, we will specify the '''Feed stream '''properties.
|- 
|| '''Input Data>> Stream Condition >> Flash Spec

>> Temperature''' '''and Pressure(TP)'''
|| Under '''Input Data''', in '''Stream Conditions''' section, select '''Flash Spec''' as '''Temperature and Pressure (TP).'''

By default, '''Temperature and Pressure '''are already selected as '''Flash Spec.'''
|- 
|| '''Input Data >> Stream Condition 

>> Temperature >> 20 C'''

Press '''Enter'''
|| Change '''Temperature''' to '''20 degree C''' and press '''Enter.'''
|- 
|| '''Input Data >> Stream Condition 

>> Pressure >> 50 bar'''

Press '''Enter'''
|| Change '''Pressure''' to '''50''' '''bar''' and press '''Enter'''.
|-
|| '''Point to Molar Flow Rate'''
|| Instead of the Overall Flow Rate, we have the individual flow rate of components. 


So we will not specify anything here.
|- 
|| '''Click >> Compound Amounts'''

'''Basis >> Mole Flows'''

'''Click Clear'''
|| To specify the individual flow rate of components, click on '''Compound Amounts'''.

Choose the '''Basis''' as '''Mole Flows.'''

Click on '''Clear''' to clear the default values.
|- 
|| '''Point to the Empty Table.'''

'''Hydrogen >> 400'''
|| Now, we will enter the Mole Flows for each compound.

Click on the first cell below '''Amount''' against '''Hydrogen''' and enter '''400'''. Press '''Enter'''.
|- 
|| '''Methane >> 100'''
|| For '''Methane, '''type '''100 '''and press '''Enter.''' 
|- 
|| '''Benzene >> 90'''
|| For '''Benzene''', type '''90''' and press '''Enter'''.
|- 
|| '''Toluene >> 10'''
|| For '''Toluene''', type '''10''' and press '''Enter'''.
|- 
|| '''Click >> Accept changes'''
|| On the right side, click on the '''Accept Changes '''button'''.'''
|- 
|| '''Click >> Stream Conditions'''

'''Point to Mass Flow'''

|| '''Go back to Stream Conditions.'''

'''Mass Flow''' and '''Molar Flow''' are automatically calculated as per the entered flow rate of compounds.
|- 
|| '''Point to 2 and 3.'''
|| Now, we will rename our product streams.
|- 
|| '''Click >> 2 >> 

2 (Material Stream) Property Editor Window.'''

'''Information''' >> '''General Info''' 

>> '''Object''' >> '''Vapor'''
|| Now click on the Material Stream named '''2'''. 

In the '''Object''' field under '''General Info''' section, rename '''2 '''as''' Vapor'''.
|- 
|| '''Click >> 3 >> 3 (Material Stream) Property Editor Window.'''

'''Information''' >> '''General Info'''

>> '''Object''' >> '''Liquid'''
|| Now click on the Material Stream named '''3'''. 

In the '''Object''' field under '''General Info''' section, rename '''3 '''as''' Liquid'''.
|- 
|| 
|| All our streams have been defined.

Now we need to specify the parameters for the '''Gas-Liquid Separator'''.
|- 
|| '''Click >> V-1 >> 

V-1 (Gas-Liquid Separator) Property Editor Window'''


'''General '''>> '''Object''' >> '''Flash'''
|| Click on the Gas-Liquid Separator named '''V-1.'''

In this '''Object''' field under '''General '''section, rename '''V-1 '''as''' Flash'''.
|- 
|| Hover mouse at '''Calculation Parameters '''
|| Go to the section '''Calculation Parameters.'''
|- 
|| Hover mouse at '''Calculation Mode'''

'''Calculation Mode >> Legacy'''
|| The first field is '''Calculation Mode.'''

Click on the drop-down against '''Calculation Mode''' and select '''Legacy.'''
|- 
|| Hover mouse at '''Outlet Pressure Calculation'''
|| Next is '''Outlet Pressure Calculation'''.

This is similar to specifying pressure for a mixer.

Also, this is to be specified only when more than one feed stream enters the flash.

Since we have only one feed stream entering, we will not change anything here.
|- 
|| Point to '''Override Sep. Temperature'''

Select '''Override Sep. Temperature'''
|| Next is '''Override Separation Temperature. '''

This is to specify the operating temperature of the '''flash separator'''.

Since the operating temperature of the flash is not mentioned in the problem, we will not specify anything here.
|- 
|| Point to '''Override Sep. Temperature'''

Check the check box on the left of '''Override Sep. Pressure'''

'''Override Sep. Pressure >> 30 bar'''
|| The next field is '''Override Separation Pressure. '''

This is to specify the operating pressure of the '''flash separator'''.

Check the checkbox against '''Override Separation Pressure.'''

Click on the field against '''Override Separation Pressure''' and enter 30 '''bar'''.
|- 
|| Click''' Solve'''
|| This completes the problem specification.

Click on the '''Solve''' button in the toolbar area.
|- 
|| Point to '''Messages''' at the bottom
|| Once the calculations are complete, we can see an error message at the bottom.

It says, '''Error in ‘Flash’: The current calculation mode requires an Energy Stream to be connected to the Unit Operation.'''

This error message means we must connect an energy stream to the '''Gas-Liquid Separator'''.
|- 
|| '''Flash (Gas-Liquid Separator) '''property editor window >> Point to '''Energy Stream'''

'''Click >> Create and Connect'''
|| This can be done in two ways.

We can drag an '''Energy Stream''' from the '''Stream''' section of the '''Object Palette''' and drop it near the '''Gas-Liquid Separator'''.

Alternatively, we can also click on the yellow icon next to the drop-down against '''Energy Stream'''. 

It will automatically '''Create and Connect''' an '''Energy Stream''' to the '''Gas-Liquid Separator'''.

Let us do that.
|- 
|| '''Click >> Create and Connect'''
|| Click on the yellow icon next to the drop-down against '''Energy Stream'''.
|- 
|| Hover Mouse at''' E-1'''
|| An energy stream named '''E-1''' is created and connected to the '''Gas-Liquid Separator'''.
|- 
|| Click''' Solve'''
|| Now, once again, solve the flowsheet.

Click on the '''Solve''' button in the toolbar area.
|-
|| Click on '''File '''and Click '''Save As'''
|| Let us now save this file.

Click on the '''File''' and select '''Save As''' option.
|-
|| Type '''flash-sim'''
|| Select a desired location to save the file.

Enter the file name as '''flash-sim'''.
|-
||  '''Insert >> Master Property Table'''
|| Now, let us display the streamwise results.

Go to the '''Insert '''menu and select '''Master Property Table'''.
|-
|| Double click on '''Master Property Table'''

Point to '''Configure Master Property Table'''
|| Double-click on the '''Master Property Table '''to edit it.

'''Configure Master Property Table''' window opens.
|-
|| Type '''Steamwise Results – Flowsheet'''
|| In the '''Name''' field, type '''Stream Wise Results – Flash.'''
|-
|| '''Object >> Feed, Vapor, Liquid'''
|| Under '''Object''', select '''Feed''', '''Vapor,''' and '''Liquid'''.
|-
|| '''Configure Master Property Table>> Property '''
|| Under '''Property''', scroll down to see all the parameters.

Now select the properties as:

'''Temperature'''

'''Pressure'''

'''Mass Flow'''

'''Molar Flow'''

'''Molar Flow (Vapor)'''

'''Molar Fraction (Mixture) / Hydrogen'''

'''Molar Flow (Mixture) / Hydrogen'''

'''Molar Fraction (Mixture) / Methane'''

'''Molar Flow (Mixture) / Methane'''

'''Molar Fraction (Mixture) / Benzene'''

'''Molar Flow (Mixture) / Benzene '''

'''Molar Fraction (Mixture) / Toluene'''

'''Molar Flow (Mixture) / Toluene'''
|- 
|| Close this window. 
|| Close this window.
|- 
|| Place the cursor on the''' Gas-Liquid Separator '''to see the table.
|| Move the '''Master Property Table '''for better visibility.

Here, we can see the corresponding stream results for '''Flash Separator.'''
|- 
|| 
|| This brings us to the end of this tutorial.
|- 
|| '''Slide Number 6'''

'''Summary'''


In this tutorial, we have learnt to
* Simulate a '''Flash Separator''' 
* Define Operating Conditions for a '''Flash Separator'''

|| Let's summarize.
|-
|| '''Slide Number 7 '''

'''Assignment'''


|| As an assignment,

Simulate the Flash Separator with different feed and operating conditions.
|-
|| '''Slide Number 8'''


'''DWSIM Flowsheeting Project'''


The '''FOSSEE''' team coordinates the conversion of existing '''flowsheets''' into '''DWSIM'''.


We give honorarium and certificates for those who do this.


For more details, please visit this site.
|| We invite you to participate in '''DWSIM Flowsheeting Project'''.
|-
|| '''Slide Number 9'''


'''Lab Migration Project'''

The '''FOSSEE''' team helps migrate commercial '''simulator labs''' to '''DWSIM.'''

We give honorarium and certificates for those who do this.

For more details, please visit this site.

|| We invite you to migrate commercial '''simulator labs''' to '''DWSIM.'''
|-
|| '''Slide Number 10'''


'''Acknowledgements'''

|| The '''FOSSEE''' project is funded by '''NMEICT, Ministry of Education(MoE)''', Government of India.
|-
|| '''Slide Number 11'''

'''Thank You'''
|| We thank the '''DWSIM''' team for making it as an''' open source software.'''


Thank you for joining.
|-
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