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