1. 3-8 Material Stream Property View
3-8
For instance, if you expand the width of the default stream view of
Figure 3.2, you can view the hidden phase properties (as shown in the
figure below). In this case, the vapour phase and liquid phase properties
appear beside the overall stream properties. If there was another liquid
phase, it would be shown as well.
Figure 3.3
Rather than expanding the view, you can use the horizontal scroll bar to
view the hidden phase properties.
When you are viewing a stream property view in the column sub-flowsheet,
there is an additional Create Column Stream Spec button on
the Conditions page. For more information on the functionality of the
Create Column Stream Spec button, refer to Section 8.5.29 - Column
Stream Specifications.
Dynamic Mode
In Dynamic mode, the Initialize Stream Conditions button appears on
the Conditions page of the Material Stream property view.
The Initialize Stream Conditions button allows you to change the values
in a stream, if you want to provide a different set of values for when the
integrator is started. Normally, you would not have to use this feature.
The Initialize Stream Conditions button is an advanced troubleshooting
In HYSYS, the liquid phase,
and aqueous phase are
internally recognized as
Liquid 1, and Liquid 2,
respectively. Liquid 1 refers to
the lighter phase whereas the
heavier phase is recognized
as Liquid 2. In the absence of
an aqueous phase, the
heavier hydrocarbon liquid is
treated as aqueous. If there is
only one hydrocarbon liquid
phase, that phase is referred
to as liquid. When there is
only one aqueous phase, that
phase is labelled as aqueous.
This feature can be used on
streams that feed into the
flowsheet (sits on the
boundary) and those that
connect operations together.
If the stream being changed
flows out of a unit operation,
its contents are likely
overwritten by the upstream
operation as soon as you
start the integrator.
However, if the downstream
operation is new or had
problems solving, changing
its feed stream may allow
HYSYS to solve the
downstream operation or
initialize and solve a
replacement unit operation.