Cooldown Path

Fig. 7.8. Heatup paths, intercepts and cooldown paths for Fig. 7.6 converter. They are described in Section 7.5. Final % SO2 oxidation after Fig. 7.6 s three catalyst beds is -98%.

This section adds a cooldown path to Fig. 13.2. It does so by preparing a data table which specifies that ... 

These specifications give the following two cooldown path points. They are plotted in Fig. 13.3 with a straight cooldown path between. 

Fig. 13.3. Cooldown path added to Fig. 13.2. It is a horizontal line at the lsl catalyst bed intercept % S02 oxidized level - between the 1st catalyst bed intercept temperature and the specified 2nd catalyst bed gas input temperature. Gas composition and % S02 oxidized don t change in the gas cooling equipment.

This chapter s 2-3 cooldown path is prepared like Fig. 13.3 s 1-2 cooldown path. It is a horizontal line at ... 

---