Information Technology Reference
In-Depth Information
Figure 2.1
Property analysis drop-down menu.
• Coefficients for
temperature-dependent
transport properties, such as liquid
viscosity
• Safety properties, such as flash point and flammability limits
• Functional group information for all Unifac models
• Parameters for Soave-Redlich-Kwong and Peng-Robinson equations of state
• Petroleum-related properties, such as API gravity, octane numbers, aromatic con-
tent, hydrogen content, and sulfur content
• Other model-specific parameters, such as the Rackett and Uniquac parameters
The list of components stored can be found by clicking the link Pure Compo-
nent Databanks and at that link, clicking the Pure Component Databank Parameters,
which provides the parameter names, descriptions, units, and availability in other
Aspen Plus data banks. An example of such data is shown in Figure 2.2. This dis-
play is invoked by selecting the Run type Property Analysis, entering components (in
this example, methanol and water), and selecting Tools, Retrieve Parameter Results,
and OK. The display will be found under Results, Pure Component. Pure compo-
nent temperature-dependent results are also available from the T-Dependent tab; for
example, the selection of parameter Plxant-1 refers to the coefficients of the extended
Antoine equation, as shown in Figure 2.3. The extended Antoine equation is
C
2
T
+
C
3
+
C
4
T
+
C
5
ln
T
+
C
6
T
C
7
ln
p
∗
=
C
1
+
C
8
≤
T
≤
C
9
(2.1)
