Page 23 - Process simulation and control using Aspen

16 PROCESS SIMULATION AND CONTROL USING ASPEN1"

Next, we need to fill up the table as suggested in Figure 1 .18. A Component ID is
essentially an alias for a component. It is enough to enter the formulas or names of the
components as their IDs . Based on these component IDs, Aspen Plus fills out the Type ,
Component name and Formula columns . But sometimes Aspen Plus does not find an
exact match in its library. Like , in the present simulation, we have the following screen
(Figure 1.19) after inserting chemical formulas of the components in the Component ID
column.

3513
I Toolt Run Plot Ltrarv . rxWv Help
Y3Mib\**\<M H - 1 .| |h| s.| v\
"
_ L r i iL 3 I
_
O
- NoncTvenbonal | Dalabanki |
-- i
Q Srxiaoor Oot-ons Dehne componentt
Q StreanOas* Type Component name Fo.mula
. Jj StXHtreans Convenhonal PflOPANE 3H9
- un*j-Set»
N'C MIO Cunvonbonal
9 BacorT Opbons Convenbonol
N-C6HU Conventonal
© Spectficanona
'
I Assay/Bend
ught-End Preoert**
Jj P«ro Characternatwn
-
Pieudocorrpcrientl
AfW-Corrpj
Merry CiJmp*
" " I
Ccrro-Coixt r
" l
Propertes
StT«f"t
| Peacfcoro Tind | EcoWaaid j U e. Defied | Reade
'
f
* Conv Oofins
- _ 21 EOConvOpBora Componen ID. II daia arc 10 be foliieved Ifcim dalobanks. enici Shai Componert Hanw c FwmUa See Help
O sab*
" -
j
f
Heai Etclianlet! | Coturr j Reacloit | Prenue Changers Manpiiaioo | Sobdi | U;ei Modets
"
- c .
Sep Sep2
FotMefcj . preMFI C:\ ..aFolde(5\A!penP1ui 11,
FIGURE 1.19
Obviously, only for Component ID C3H8, Aspen Plus provided the Component name
(PROPANE) and Formula (C3H8). This simulator does not recognize the other three
components by their IDs. Therefore, we have to search in the following way
(Figure 1.20) to obtain their names and formulas. Click on a component ID (say, N-C4H10),
then hit Find button.
Now, we have to give a hint with Component name or formula (butane) and then
hit Enter or Find now button (Figure 1.21). Apart from component name or formula,
we can also search a component by giving component class or molecular weight (range)
or boiling point (range) or CAS (Chemical Abstracts Service) number. Click on Advanced
button in the following screen to get these options.