By assuming the T in between 200 to 320°C, find XEB and XMB using the equations obtained. The values
are calculated using Excel and tabulated as below.
T
XEB
XMB
200
0.0499
0.0000
210
0.0528
0.0000
220
0.0556
0.0000
230
0.0585
0.0001
240
0.0613
0.0006
250
0.0641
0.0027
260
0.0670
0.0111
270
0.0698
0.0389
280
0.0727
0.1123
290
0.0755
0.2495
300
0.0784
0.4238
310
0.0812
0.5868
320
0.0841
0.7135
The graph is plotted based on the values of T, XEB and XMB using Excel.
0.8000
0.7000
Conversion (X)
0.6000
0.5000
0.4000
XEB
0.3000
XMB
0.2000
0.1000
0.0000
230
240
250
260
270
280
290
300
Temperature (°C)
Figure 1: Graph of XEB AND XMB against T
310
320
330
0.1000
0.0900
Conversion (X)
0.0800
0.0700
0.0600
0.0500
XEB
0.0400
XMB
0.0300
0.0200
0.0100
0.0000
230
240
250
260
270
280
290
Temperature (°C)
Figure 2: Zoomed graph of XEB AND XMB against T
From the graph, the intersection point is at 274°C and 0.072 (7.2%) conversion. At this point, the energy
balance and mass balance are satisfied because XEB = XMB.