A training file of Aspen HYSYS training designed by an expert team. It teaches the basic how to use Aspen HYSYS.

1. Supported by:
Aspen HYSYS Training
Module 1: What is Aspen HYSYS?
Tutor:
M. Ersharry Yunashtanto
Zayyanatun Zulfa
Ikha Muliawati
Mada Harahap

2. +
Use of a computer program to quantitatively model the characteristic
equation of a process in term of material and energy stream.
Simulation

3. Given
Process Model
Predict Products
• Process Design/Analysis
• Optimization
• Equipment Sizing, Costing
Known Feeds
Principle

4. Right sequence?Reactor type?
Catalyst?
Chemistry?
Number
of trays?, Feed Stage?
T, P?
Reflux? P?
Recycle flowrate?
Steam Rate ?
CW rate?
Purity?
Example of process model
Principle 2

5.  Steady-State Modeling: Input – Output = 0
 Dynamic Modeling: Input – Output = Accumulation
F
FV
FL
Simulation Taken Time
or Number of Iteration
0
Solution Space
F(x)=0
F(x)x
xi
xs
Time0
x
)(/ LV FFFdtdV 
LV FFF 
F
FV
FL
PC
LCFC
•Design
•Operation
•Optimization
•Design Verification
•Operation Analysis
•Control Strategy
•Operator Training
Model

6. • Interactive Simulation (Automatic Calculation)
• Automatic detection of Degree of Freedom
• Automatic stream Flash calculation
• Full Microsoft Windows Program (click, cut and paste, object,,,)
• Bi-directional calculation (non-sequential)
• Easy to learn & use
• Fast solver (speed)
• Extensibility
• No Input text file (think about MS Excel)
• Fully integrated Steady and Dynamic simulation
HYSYS Uniqueness

7. Degree of Freedom: the number of independent parameters that define its
configuration
DOF = No of variables – No of equations
Yes, because it has unique solutions. DOF = 2 – 2 = 0
5x + 3y = 75
10x + 6y = 150
Degree of Freedom

8. DOF in Process Balance = No. of unknown variables + No. of reactions – No
of independent material balances – No. of other relationships
From above case, we can create 3 material balance (oxygen, nitrogen,
and total). However they all will not be independent.
You will need one other relationship. Let’s say you have created total
and oxygen balance (2 equation), then one (1) other relationship equation
will be
Then, DOF = 3 + 0 – 2 – 1 = 0 (solved)
yN2 = 1 – yO2
Degree of Freedom (2)

9. • Independent Variables
− Intensive variables(x,T,P,V,H,S) : Strength, Quality, Shape
− Extensive variables (F,Q,delta P) : Size, Quantity
• To define Stream completely
− Chemical Components
− State
− Temperature
− Pressure
− V/F (Vapor Fraction) ?
− Quantity
− Flowrate
• To define Process Unit
− All Units: Pressure Drop
− Heater/Cooler, Pump, Compressor: Q(Duty)
− Heat Exchanger, Distillation Column: more specifications
DOF
Specification
User Input
User Specified
BLUE Variable in HYSYS
Density ?
Viscosity ?
Cp, Cv, Cp/Cv ?
Enthalpy ?
Thermal Conductivity ?
MW ?
K-value ?
etc....
Degree of Freedom (3)

10. Have you installed hysys
with appropriate version??
It is more difficult to open
newer version in older
version (e.g 8.0 to 7.3).
First Things First…

11. What Good Looks Like..

12. What Good Doesn’t Look Like..

13. Thank You
M. Ersharry Yunashtanto
Zayyanatun Zulfa
Ikha Muliawati
Mada Harahap