Minor influence—CO2 in feed gas

Metallurgical and spent acid regeneration gases contain CO2 from fossil fuel and spent acid impurities. CO2 concentrations in catalyst bed feed gas are typically  

CO2 has no effect on SO2 + V2O2 — SO3 equilibrium curves, Appendix F. It does, however, have a small effect on heatup paths and intercepts. Fig. 12.6. 

Intercept temperature decreases slightly with increasing C02-in-feed-gas. Intercept % SO oxidized increases slightly. 

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