Sketch the composition-temperature trajectory for the proposed ammonia converter shown in Figure 27.7 and use it to explain why it performs poorly. On the same plot, sketch the composition-temperature trajectory for the modified design shown in Figure 27.11, and comment on the differences.

Figure 27.7:-

Figure 27.11:-

Transcribed Image Text:

5-12 S-13 K-101 M-101 5-24 SYN Feed H-N Ratio S-14 S-14 B-111 TEE 100 K-101 Duty S-16 Purge Purge Mass Flow 1.303+004 kg/h TEE NH, CH 0.3328 N 0.1665 8.23 H 0.0913 3.002 B-112 Duty B-114 Duty S.21 S-22 VA-101 B-112 B-114 B-111 Duty S-15 5.20 DA-101 S-18 5.17 NH, Converter Costing MIX-101 8-19 DA-102 Figure 27.7 UniSim Design PFD for the base-case design: Synthesis loop section. V-101 Cost NH, Product NH3 Product Mass Flow 18758 NH3 Purity 0.9954