Information Technology Reference
In-Depth Information
DATA0 Triangular plot of BENZENE 2-PROH WATER
Exp X1
Exp X2
Est X1
Est X2
0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5 0.55 0.6 0.65 0.7
Mole fraction BENZENE
0.75 0.8 0.85 0.9 0.95
Figure 11.32
Triangular plot.
function of the stage numbers. One may observe that the methanol composition barely
changes between stages 6 and 11, which suggests that there are too many stages in the
current design.
Workshop 11.2c
The column is reconfigured to 11 stages with the feed on stage 7.
The results are very close to those of Workshop 11.2b. The column design as proposed
by DSTWU has too many stages.
Workshop 11.3a
The triangular plot is shown in Figure 11.32.
Workshop 11.3c
To obtain the total quantity of 2-propanol extracted, it is convenient
to set up a Mix block and feed it the aqueous phases from each decanter. When this
is first run, one observes that with one-fourth of the required water added to the the
organic feed, no phase splitting occurs. It is necessary to feed both products of the first
decanter to the second decanter, and then everything proceeds as expected. If an error
message referring to insufficient iterations arises, double the default value of 30.
When comparing the results to Workshop 11.3b, one observes that less than half of
the alcohol is extracted by batch extraction.
