lecture 2 - intro to hysys

8/10/2019 Lecture 2 - Intro to HYSYS

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Getting started with Aspen HYSYS


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H82CYS - Computer System Getting Started with HYSYS 2

Various unit operations in HYSYSReactors:

Continuous-stirred tankreactor (CSTR)Conversion ReactorEquilibrium reactorGibbs reactorPlug flow reactor (PFR)

Heat transfer equipment:Air coolerCoolerFired heaterHeat exchanger

HeaterRotating equipment:CompressorExpanderPump

Pre-built columns:3 stripper crude4 stripper crudeAbsorberDistillationFCCU main fractionatorLiquid-liquid extractor

Reboiled absorberRefluxed absorberThree phase distillationVacuum resid tower

Solid handlingBaghouse filterCycloneHydrocycloneRotary vacuum filterSimple solid separator


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Getting started

Path: Start/AspenTech/Aspen

Engineering Suite/Aspen HYSYS2006.5/Aspen HYSYS 2006.5


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Getting started

Select

AcademicUser

Select OK


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To maximise view

Unselect this

Maximise theflowsheet


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HYSYS interface

Start a new

flowsheet

Open anexisting file

Save asimulation file

Menu bar

Toolbar

Status barObjectstatus

windowTrace

window

Performanceslider


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Building a new flowsheet


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Example 1 - Water cooling

Water stream of 120C is cooled by a chiller(heat exchanger).A total of 120 MJ/h of heat is to be removedfrom the chiller.Task: determine the outlet temperature fromthe chiller.

Water100 kPa & 120C

?? C

120 MJ/h


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Basic simulation steps

Input topology of flowsheet 3

Select thermodynamic model 2

Select convergence criteriaand run simulation 7

6Select output display options

Sequence of input steps for asimulation problemBasic computational elements

in process simulatorComponent

database1

Thermodynamicmodel solver2

Flowsheet builder3

Unit operationblock builder4

Data output

generator5

Flowsheet solver6

Select chemical components 1

Select units and select feedstream properties 4

Select equipment parameters 5

(Turton et al . , 1998)* Other commonly found features: file control

options, eng units options, data regression, etc.


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Start a new flowsheet

Start a newflowsheet


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Simulation Basis Manager

Componentdatabase tab

Thermodynamicmodel tab

Reaction tab


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Add component from database Add

componenthere

Add water here@ double click@ click ENTER

Type waterhere

Remove (only ifyou have added

wrongly)

Sim name : nameappearing withinsimulation

Full Name/Synonym : IUPACname & synonyms

Formula : chemical

formula of component


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View component properties

Select thecomponent

Viewproperties

here

Close

Close


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Back to Simulation Basis Manager


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database1


Flowsheet builder3


Data output

generator5

Flowsheet solver6







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Define thermodynamic model

Fluid packagetab (HYSYS

thermo model)

Add a fluidpackage

Search forPeng-

Robinson

Close

Rename fluidpackage(optional)


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Back to Simulation Basis Manager

Name of thechosen fluid

package

NC = No ofcomponent

PP =Propertypackage

Click here toenter into

SimulationEnvironment


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The Simulation Environment

The PFD

The Object Palette to add streams and

unit operations open or close by F4Zoom

function

To return toSimulation Basis

Environment


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File saving

Click hereto saveyour file

Maximiseflowsheet


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A saved case

File name


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database1


Flowsheet builder3


Data outputgenerator5

Flowsheet solver6







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Place theCooler here

Flowsheet topology

Select a MaterialStream

Select aCooler

Colour code of HYSYS: Red - A major piece of

information is missing Yellow - All major info is

present, but the stream /operation has not been solved

because 1 or more degrees offreedom is present. Green - The stream/operation is

completely defined & solved .


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Connecting the stream (attach mode)

Attach mode

Steps for making a connection:1. Ensure you see a small transparent

box appears at the cursor tip, with apop-up description attached to thecursor tail ( Out in this case)

2. Left-lick and hold the cursor, thetransparent box becomes solid black,indicating that you are beginning aconnection.


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Connecting the stream (continue)

Steps for making a connection:3. Drag the cursor (while still

clicking on it) toward the leftside of the Cooler.

4. Place the cursor near theconnection point, and releasethe cursor, the stream will snapto that point.


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Do the same for outlet stream

Steps for making a connection:1. Position the cursor over the

right end of the Cooler icon.2. Left-click and hold the cursor.3. Move the cursor to the right of

the Cooler.4. Release the cursor


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An energy stream is needed for a cooler

The icon changeto yellow now

Colour code for streams: Light blue :

incompletely specified Royal blue : properly

specified

Energy stream


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To remove a unit/stream (optional)

Unselect Attach mode

Note: Dont remove thestream (this is for

demonstration only)


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database1


Flowsheet builder3



Flowsheet solver6







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Feed stream specification

Double click onthe streams

Temp = 120 C;Pressure = 100 kPa

(key in value &press ENTER)


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Feed stream specification

Select MassFlows

Enter 50 kg/h &press ENTER

Enter OK toexit

Click on Edit

Click onComposition

Close toreturn to PFD


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database1


Flowsheet builder3



Flowsheet solver6







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Equipment specification

Double click onthe Cooler

Object statuswindow

Stream change toRoyal blue

(properly specified)

Click onParameters

Close toreturn to PFD

Delta P = 0 kPa;Duty = 120 MJ/h


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in process simulator

Componentdatabase1


Flowsheet builder3



Flowsheet solver6







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Set session preference

Selectvariable tab

Select SIunit


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Customise the unit set (optional)

DuplicateRename

Delete

Close

Select SIunit


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in process simulator

Componentdatabase1


Flowsheet builder3



Flowsheet solver6







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Simulation execution

Solver Active button ( green ): Unlikeother simulation softwares, HYSYS

solves the flowsheet after eachaddition/change to the flowsheet

(default setting). This feature can be

disabled by clicking the SolverHolding button ( red )


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View simulation results (PDF)

Streamresult


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View simulation results (Workbook)

Click here tosee the

Workbook

New Workbookmenu appears

Vapour fractionchanges (1 0)


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Congratulation forconverging the firstHYSYS simulation file Remember to save your file

lecture 2 - intro to hysys

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