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 |