Page 262 - Sustainability in the Process Industry Integration and Optimization

E x a m p l e s a n d Ca s e S t u d i e s 239

Stream Name T [°C] T [°C] ΔH [kW] CP
s t
[kW/°C]
1 OH_Naphta_1 100 41 27.5113
2 OH_Naphta_2 132 60 23.1850
3 OH_HKD 224 65 11.2400
4 LCT 268 30 363.12 1.5257
5 Residue 283 45 336.25 1.4128
6 Crude 30 146 2031.50 17.5132
7 Denaphta_1 117 204 977.88
8 Denaphta_2 176 305 1641.45 12.7244

TABLE 10.15 Process Streams for Problem 6

Stream T [°C] T [°C] Cost
s t
[£/kWy]
HP steam 320.1 320.0 100
MP steam 260.1 260 60
Cooling water 20.0 40.0 8

TABLE 10.16 Available Utilities for Problem 6

HP steam = 654.2 kW
320.0°C 320.1°C
MP steam = 874.4 kW
300 305.0°C
260.1°C
260.0°C
250.1°C
224.0°C
T* [°C] 200 176.0°C
204.0°C
132.0°C 146.0°C
100.0°C 122.0°C
100
45.0°C
41.0°C 60.0°C
40.0°C
30.0°C
20.0°C Cooling water = 2657 kW
0 2000 4000 6000 8000
ΔH [kW]
FIGURE 10.20 Balanced Composite Curves and heat recovery targets for
Problem 6.