Beginning Simulation
1. Select new case from file menu or press new case button
2. Need to pick a property package so HYSYS knows how to calculate thermodynamic
and transport properties (viscosities, densities etc…)
Hit the “fluid Pkgs” tab and press Add button and available property packages appear:
The choice of Property Package is made on the Prop Pkg tab, to select a base property package, in this
case Peng Robinson:
• Scroll down the list of available property packages until Peng Robinson is highlighted.
3. Now we need to select the components in our gas stream:
Hit the “view” tab on Component List - 1
Notice that each component is listed in three ways:
At the top of each of these three columns is a corresponding radio button. Based on the selected radio
button, HYSYS will locate the component(s) that best match the input you type in the Match cell.
For this example, N2, H2S, H2O, CO2, C1, C2, C3, iC4 and nC4 will be used as the components. To
add nitrogen using the match feature:Matching Method Description
SimName The name appearing within the simulation.
FullName/Synonym IUPAC name (or similar), and synonyms for many
components.
Formula The chemical formula of the component
Select the components by either using your mouse or typing in the formulas/sim name
You can view the properties of each component by highlighting the component and hitting the “view
component” button (critical point and other thermochemical properties are displayed)
Close the “Component List View” window
4. Close the “Fluid Package:Basis 1” window and hit the “Enter Simulation
Environment” button  Save your case
5. First we install the feed streams, we will start with a “lean gas”.
You can create the feedstream from the workbook (under “Tools”) or use the palate at the right side of
the screen:
Create a stream and call it Well 1 with the following T, P, and compositions:
Temperature = 60 F
Pressure = 41.37 bar
Flowrate = 6 MMSCF  molar flowrate space
go to “Composition” then hit the “edit” button
mole fraction
N2
0.01
H2S
0
H2O
0.01
CO2
0.01
C1
0.9
C2
0.035
C3
0.015
iC4
0.0075
nC4
0.0075
nC5
0.0025
nC6
0.0025
nC7
0
hit “normalize”
”
HYSYS has performed a flash calculation to calculate the properties of the streams
(vapour fraction, critical properties etc…) you can see this if you go to the “properties”
section. You can also see this if you go to “tools” and highlight “workbooks”
You can also create a phase diagram:
go to well 1 and hit the “attachments” tab
then highlight “utilities”
hit the “create” button which gives you a choice of utilities to add, pick
“envelope” and hit “add utility”
hit the “performance” tab and you get the phase envelope for the well 1 stream,
you can also add the hydrate line
6. To see the impact of composition we will clone or copy “well 1” and add some more
H2S and CO2. So add another stream and hit the “define from other stream” button,
select “well 1”
7. Change the H2S and CO2 to 0.4 and 0.3 respectively then normalize (everything shifts
to account for change so if you actually want 20 H2S you have to specify all other
components to match.
8. Create and envelope. Hit the “performance” tab and then hit the “table” button. Copy
the dew and bubble point data to excel. This is what it will look like:
Phase Envelope
14000
lean gas bubble line
lean gas dew line
12000
Pressure (kPa)
10000
lean gas hydrate line
H2S natural gas bubble line
H2s dew line
8000
H2S hydrate line
6000
4000
2000
0
-17 5 -15 5 -13 5 -11 5 -95 -75 -55
Temperature (C)
-35
-15
5
25
your assignment is re-create the curve from Figure 10.5 (assume a
flowrate and T and P as this does not impact envelope)