O2 in feed gas

Equilibrium % SO2 oxidized increases slightly with increasing volume% O2 in feed gas. This is because a high volume% 02 volume% SO2 product pushes SO2 oxidation to the right, Eqn. 10.7. 

Fig. 11.1. Heatup path for SO2, O2, N2 gas descending a catalyst bed. The SO2 and O2 in feed gas react to form SO3, Eqn. (1.1). The gas is heated by the exothermic heat of reaction. The result is a path with increasing % SO2 oxidized and increasing gas temperature. Notice how the feed gas s heatup path approaches its Chapter 10 equilibrium curve.

Fig. 18.7. Effect of volume% O2 in feed gas on intercept SO2 oxidation efficiency. % SO2 oxidized increases with increasing O2 strength - but the effect is small, especially after 3 catalyst beds.

Figure 10.4 shows the effect of volume% O2 in feed gas on equilibrium % SO2... 

Figure 12.5 Effect of feed gas O2 strength on constant SO2 strength heatup paths, equilibrium curves, and intercepts. Intercept temperature and % SO2 oxidized increase slightly with increasing O2 in feed gas. Heatup path is barely affected by O2 strength—three paths are superimposed on this graph. The effect is small because ...

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