| Parameters | Distillation system | Three-effect system | ||
| I | II | III | ||
| Pressure/MPa | 0.1 | 0.16 | 0.069 | 0.03 |
| Theoretical stage | 66 | - | - | - |
| Top temperature/˚C | 64.39 | 101.9 | 82.7 | 66.4 |
| Bottom temperature/˚C | 99.66 | 111.0 | 90.1 | 72.1 |
| Condenser duty/kW | 493.90 | 441.23 | 261.90 | 317.72 |
| Reboiler duty/kW | 112.77 | |||
| Total heat exchange area/m2 | 53.61 | 55.05 | 47.69 | 65.75 |
| Annual steam cost (105$/y) | 4.11 | 92.76 | ||
| Annual cooling water cost (105$/y) | 2.74 | - | ||
| Compressor power consumption/kW | - | 51.88 | ||
| Total energy cost/t∙a−1 | 535.92 | |||
| TAC (105$/y) | 28.40 | |||