Consider the system illustrated in Figure P22.25(a). The process is to be scaled up from a design flowrate of \(120 \mathrm{~m}^{3} / \mathrm{h}\). The fluid is a liquid, and it is to be fed to a reactor. The heating medium is condensing, medium-pressure steam throttled and desuperheated to saturated steam at \(180^{\circ} \mathrm{C}\). In the heat exchanger, the resistances are such that the process-side resistance (tubes) is three times that of the condensing steam (shell). The pump and system curves are shown in Figure P22.25(b).

a. What is the maximum percent scale-up possible in this system and the corresponding outlet temperature of E-101?

b. If it is necessary for the minimum reactor feed temperature to be \(153^{\circ} \mathrm{C}\), what is the maximum possible scale-up?

Figure 22.25 (a) and Figure 22.25 (b)

Transcribed Image Text:

140 120 100 AP (kPa) 60 80 80 40 40 20 mps 180C 25C 155C E-101 P-101 A/B Figure P22.25(a). PFD for Problem 22.25 0 0 20 40 60 80 100 120 140 160 180 200 Flowrate (m/h)