Table 3.
Computational outputs from the GA for the base case and future mode.
| Initial values |
|||||
|---|---|---|---|---|---|
| Base Case |
Future Mode |
||||
| [Recycle amount (kg/s), Bottom operating pressure of deethanizer (MPaa), Bottom operating pressure of debutanizer (MPaa)] | |||||
| [20, 0.69, 0.45] | [7, 0.9, 0.7] | [3.9, 0.95, 0.6] | [12,0.85,0.6] | [17,0.7,0.55] | |
| Optimum recycled flowrate (kg/s) | 3.21 | 3.206 | 3.2 | 10.0011 | 10.0011 |
| Optimum bottom operating pressure for deethanizer (MPaa) | 0.848922 | 0.849922 | 0.8489375 | 0.8697659 | 0.8697659 |
| Optimum bottom operating pressure for debutanizer (MPaa) | 0.500124 | 0.50001 | 0.500 | 0.5500942 | 0.5500942 |
| TAC (1000 USD/year) | 826.300 | 826.300 | 825.760 | 1118.60 | 1118.80 |
| CPU time (s) | 25,610 | 25,609 | 10,000 | 35,503 | 40,951 |
| Function evaluations | 6650 | 6650 | 4900 | 1850 | 2600 |