Page 257 - Sustainability in the Process Industry Integration and Optimization

234 Cha p te r T e n

10.3 Integrated Placement of Processing
Units and Data Extraction

Problem 5: Task Assignment
The process flow sheet for a base-case design is shown in Figure 10.17
with some additional data. The CCs and GCC of the process (with
appropriate data) for ΔT = 20°C are shown in Figures 10.18 and
min
10.19, respectively.

purge
120°C
FR m=0.4
H
C 900
m=1 1300 505 180°C CA
50°C 130°C
F1 H 180°C
R1 A
50°C 180°C T=180°C Column A
F2
m=0.8
220°C HM
H
m=1.4 220°C
RA
1050 H
CB 200°C
1000
980 C
200°C
70°C C Heat exchanged
P2
with cold utility
m=1.3
B H Heat exchanged
with hot utility
Column B
RB Q Heat exchanged [kW]
1928 m=[kg/s]
m=0.5 70°C 150°C 270°C 270°C
P1 C H
FIGURE 10.17 Process fl owsheet for the base-case design (Problem 5).
T [°C] ΔT min = 20 °C 2642.6
250
Pinch
200
T = 240 °C
h
T = 220 °C
c
150
100
50
1958.6 10316.6
0
0 2000 4000 6000 8000 10000 ΔH [kW]
FIGURE 10.18 Composite Curves for the process in Problem 5.