Page 250 - 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 227

Stream name Supply temp. [°C] Target temp. [°C] ΔH [kW]
A1 50 140 450
A2 100 30 420
A3 100 140 80

TABLE 10.5 Data for Process A (Problem 3)

ΔT min = 10°C

(330;145)
150
Sink A1
Sink A2
T* [°C] (59;105)
100
(0;95)
Source A1
50
(40;55) Source A2
(220;25)
20
0 100 200 300
ΔH [kW]

FIGURE 10.8 Grand Composite Curve for process A (Problem 3).

Stream name Supply temp. [°C] Target temp. [°C] CP [kW/°C]
B1 190 120 6
B2 100 240 4
B3 80 60 2

TABLE 10.6 Data for Process B (Problem 3)

High-pressure (HP) steam from a boiler is available at 240°C
saturation temperature, and cooling water is available at 20–30°C.
It is necessary to analyze these two processes (and hence the
Total Site) as follows:

(a) Find the Pinch temperatures and minimum utility demands
for processes A and B.
(b) Construct the GCC for process B.