ADVANCED EXAMPLE 8001
Adjust Feed Composition From Excel
Components
NO. NAME
FORMULA PHC
1
2
3
4
H2O
N2
O2
H2O
H2O
N2
O2
H2O
Stream Data
Stream 1 - N2
Gaseous Assays
LI3
GC8
GC8
GC8
10 Mt/Hr
N2
..............1.0
Temp ...............50oC
Stream 2 - O2
Gaseous Assays
10 Mt/Hr
O2 ...............1.0
Temp ...............50oC
Stream 3 - H20
Gaseous Assays
10 Mt/Hr
H2O ................1.0
Temp ...............50oC
Stream 6 - WATER
2 Mt/Hr
Aqueous Assays
H2O ............1.0
Temp 20oC
Flash Vessel
Set the Pressure to achieve 65oC in the Slurry, stream 8.
The Flash Vessel Unit Operation Data variable PR is the pressure in the Flash. A Feedback
Control will be used to adjust the PR variable to achieve the desired temperature in stream 8. In
The CONTROL TAB of the Unit Operation Screen enter the following in the CtB and CtA fields.
Note: 3 FRND nv
(Returns the rounded off vector nv to 3 decimal places.
CtB
PRFRND VCTL 5

CtA
1
ADVANCED EXAMPLE 8001
FlashPressurePR
The pressure of the Flashing Vessel needs to be reported to the Excel Spreadsheet. The variable
"FlashPressure" is assigned the value of the Flash variable PR which is the Flash pressure. The
value of "FlashPressure" is then output too Excel via a DDE link in METSIM.
Flowrate Controls
CN ID
1
Control N2 in Feed Stream 5
2
Control O2 in Feed Stream 5
3
Control H20 in Feed Stream 5
4
Flowrate Feed Stream 5
OP
2
2
2
2
SN
1
2
3
5
SP
USFeedFlow×USN2WF
USFeedFlow×USO2WF
USFeedFlow×USH2OWF
USFeedFlow
Feedback Control
ID = Control Flash Pressure to achieve Outlet Temperature
CN OP NO SN LV HV
VF
SP
5
3
3
0 75
1000
VTEC s8
USslurryTemp
VF
VMTH SN
VMTH SN
VMTH SN
VMTH SN
SL
1
With the Edit Object Data Tool click on the "User Created Objects Button" and enter the
following;
User Created Objects
Type
Name
Description
Value
Scalar
USN2WF
N2 wf Feed Stream 5
0.67
Scalar
USO2WF
O2 wf Feed Stream 5
0.23
Scalar
USH2OWF
H2O wf Feed Stream 5
0.1
Scalar
USFeedFlow
Flowrate Feed Stream 5
205
Scalar
USslurryTemp
Flash Slurry Temp oC
65
BATCH
BATCH
Run METSIM From Excel
XCAL
From the Tools Menu select "IDDE Input DDE Data Exchange" and enter the following;
DDEs
ID
Flowrate Feed Stream 5
N2 wf
O2 wf
H2O wf
Flash Slurry Temp oC
Flowrate Stream 1-N2 Mt/Hr
Flowrate Stream 2-O2 Mt/Hr
Flowrate Stream 3-H2O Mt/Hr
Flowrate Stream 4-Error Mt/Hr
Flowrate Stream 5-Feed Mt/Hr
Flowrate Stream 6-Feed Mt/Hr
Flowrate Stream 7-Feed Mt/Hr
Flowrate Stream 8-Feed Mt/Hr
N2 wf in Feed
O2 wf in Feed
H2O wf in Feed
Feed Stream Temp oC
Flash Water Temp OC
Flash Offgas Temp oC
Flash Slurry Temp oC
Flash Pressure kPa
MV
USFeedFlow
USN2WF
USO2WF
USH2OWF
USslurryTemp
VMTH s1
VMTH s2
VMTH s3
VMTH s4
VMTH s5
VMTH s6
VMTH s7
VMTH s8
c2 VCWF s5
c3 VCWF s5
c4 VCWF s5
VTEC s5
VTEC s6
VTEC s7
VTEC s8
FlashPressure
IO
INPUT
INPUT
INPUT
INPUT
INPUT
OUTPUT
OUTPUT
OUTPUT
OUTPUT
OUTPUT
OUTPUT
OUTPUT
OUTPUT
OUTPUT
OUTPUT
OUTPUT
OUTPUT
OUTPUT
OUTPUT
OUTPUT
OUTPUT
PN
EXCEL
EXCEL
EXCEL
EXCEL
EXCEL
EXCEL
EXCEL
EXCEL
EXCEL
EXCEL
EXCEL
EXCEL
EXCEL
EXCEL
EXCEL
EXCEL
EXCEL
EXCEL
EXCEL
EXCEL
EXCEL
SN
FEED
FEED
FEED
FEED
FEED
FEED
FEED
FEED
FEED
FEED
FEED
FEED
FEED
FEED
FEED
FEED
FEED
FEED
FEED
FEED
FEED
CN
USFeedFlow
USN2WF
USO2WF
USH2OWF
USslurryTemp
Flow1out
Flow2out
Flow3out
Flow4out
Flow5out
Flow6out
Flow7out
Flow8out
N2out
O2out
H2Oout
FeedTemp
FlashWaterTemp
OffGasTemp
SlurryTempout
FlashPressure
EXCEL SPREADSHEET
Using the supplied graphic (cbkFeedCompExcelPic.jpg) setup the following Excel Spreadsheet.
2
ADVANCED EXAMPLE 8001
In Excel rename SHEET1 to FEED.
Add an Excel Button with the following Visual Basic Code;
Private Sub CommandButton1_Click()
MyAppID = Shell("c:\metsim\metsim.exe SIL=1 MOD=C:\METSIM\MEX\8001CalFromExcel.sfw")
End Sub
After the Excel spreadsheet is setup SAVE it as "8001CalFromExcel.XLS".
In METSIM Turn on the Activate Dynamic Data Exchange Switch (DDS) by clicking on the Model
Parameters Button, then the Calc Options tab and finally click the DDS box.
With the "Edit Object Data" Tool click on the SECTION at the bottom left-hand side of the palette.
Enter Feed Stream into the field UN - Unit Operation Name. Click OK to exit this unit operation.
The flowsheet is now ready to CALCULATE but before running the Calculation routine the file
should be SAVED as "8001CalFromExcel.sfw". It is important that the flowsheet be saved as the
filename used in the Command Button.
The METSIM flowsheet MUST BE SAVED in the directory used in the CommandButton. After
Saving the METSIM flowsheet and Excel file close both programs.
Load the Excel file.
From Excel click on the METSIM Button.
Results may be viewed in Excel after the calculation stops.
3
ADVANCED EXAMPLE 8001
Next change the input values in Excel and Calculate the flowsheet again. Then view the results in
Excel again.
Instructions for Running METSIM from EXCEL in Silent Mode
1.
Build METSIM model and get it working.
2.
Once model is working add DDE inputs and outputs to Excel.
3.
Build Excel Spreadsheet with input and output fields.
4.
Test model, DDE and Excel to make sure they function as desired.
5. In METSIM User Created Objects, create a 'BATCH' function with 'XCAL' command. 'XCAL'
calls the METSIM calculation routine. The BATCH function is executed when a model is
loaded in silent mode.
6.
Add METSIM button to Excel. Add following Vusual Basic commands to button.
Private Sub CommandButton1_Click()
MyAppID = Shell("c:\metsim\metsim.exe SIL=1 MOD=FILE")
End Sub
Where FILE is exact and complete drive:path/file/extension
Example: C:\METSIM\MEX\cbkFeedComposition.SFW
7.
Save METSIM and Excel files in same directory as specified in path noted.
8.
Close METSIM and Excel. Reopen Excel, load file, change data, click 'METSIM' button.
METSIM should startup, load model, read DDE input, calculate results, write DDE output
and shutdown without displaying any messages.
9.
The Security Option in Excel must be set to allow the running of Macros for the function to
work.
10. Whenever a new version of METSIM is received the flowsheet and spreadsheet need to be
loaded and Saved before the function will work correctly.
4