Set-up an input/output structure of the flowsheet showing the flow of all materials into and out of the black-box representing the plant in kg/h. Estimate the economic potential in $/year (330 working days/year)
You work in a facility that produces about 150,000 ton/y of methyl tertiary butyl ether (MTBE). MTBE is an oxygenated fuel additive that is blended with gasoline to promote CO2 formation over CO formation during combustion. The facility manufactures MTBE from methanol and isobutylene.
The feeds and products prices are:
Mixed-butenes feed: $ 0.35/kg
Methanol feed: $ 3.3/L (Density = 792 kg/m³)
Process Water: $ 1.00 per ton
Product MTBE : $ 3.15/L (Density = 740 kg/m³)
Butene product waste stream: $ 0.34/kg
The properties of main feed and product streams are shown in Table Q2
|
|
Mixed-butenes feed |
Methanol Feed |
Process Water Feed |
Product MTBE |
Butene product waste stream |
|
Temperature oC |
25 |
25 |
30 |
178.46 |
83.49 |
|
Pressure, kPa |
390 |
400 |
450 |
1925 |
110 |
|
Vapour Fraction |
0 |
0 |
0 |
0 |
1 |
|
Total kg/h |
21875.00 |
5600 |
21618 |
12973.05 |
18828.85 |
|
Total kmole/h |
389.88 |
174.77 |
1200 |
150.40 |
500.96 |
|
Component kmole/h |
|
|
|
|
|
|
Methanol |
0 |
174.77 |
0 |
7.06 |
23.69 |
|
i-butene |
155.95 |
0 |
0 |
0 |
12.23 |
|
1-butene |
46.79 |
0 |
0 |
0 |
46.78 |
|
Trans-2-butene |
187.14 |
0 |
0 |
0 |
187.13 |
|
MTBE |
0 |
0 |
0 |
142.36 |
1.36 |
|
Water |
0 |
0 |
1200 |
0.97 |
229.76 |
- Set-up an input/output structure of the flowsheet showing the flow of all materials into and out of the black-box representing the plant in kg/h.
- Estimate the economic potential in $/year (330 working days/year)
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