Page 264 - 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 241

132.0°
260.1°
320.0° 320.1°
10 HP_steam
CP = 6541.63 ΔH = 654.163
260.0° 260.1°
11 MP_steam
CP = 8743.73 ΔH = 874.373
41.0° 100.0°
1 OH_Nafta_1
CP = 27.51 ΔH = 1623.167
60.0° 132.0°
2 OH_Nafta_2
CP = 23.18 ΔH = 1669.32
224.0°
65.0°
3 OH_HKD
CP = 11.24 ΔH = 753.08 CP = 11.24 ΔH = 1034.08
30.0° 268.0°
4 LCT
CP = 1.63 ΔH = 165.621 CP = 1.63 ΔH = 195.442 CP = 1.53 ΔH = 12.053
45.0° 283.0°
5 Residue
CP = 1.41 ΔH = 122.913 CP = 1.41 ΔH = 180.979 CP = 1.41 ΔH = 32.353
30.0° 146.0°
6 Crude
CP = 17.51 ΔH = 1611.214 CP = 17.51 ΔH = 420.316
117.0° 204.0°
7 Denafta_1
CP = 11.24 ΔH = 56.2 CP = 11.24 ΔH = 921.68
305.0°
8 Denafta_2
CP = 12.72 ΔH = 942.878 CP = 12.72 ΔH = 698.589
20.0° 40.0°
9 Cooling water
CP = 132.83 ΔH = 2656.687
122.0° 250.1°
ΔT min = 10°C; All temperatures are in [°C], ΔH are in [kW], CP are in [kW/°C]
FIGURE 10.22 Preliminary grid diagram for Problem 6(c).
Answer to (d). See Figure 10.23.
1623.17 kW 132.0°
41.0° 100.0°
C1 1
57.71 kW
60.0° 62.51° 132.0°
C3 2 2
696.88 kW
65.0° 127.3° 132.0°
C5 4 3
155.62 kW
30.0° 132.0°
C6 4
122.91 kW
45.0° 132.0°
C7 5
30.0°
122.0°
6 2
1611.21 kW
117.0° 122.0°
7 4
56.2 kW
20.0°
9 C1 C7 C6 C5 C3
122.0°
FIGURE 10.23 HEN design below the Process Pinch [Problem 6(d)].