Sulfur burning offgas temperatures

Sulfur burning offgas is introduced directly into the hot converter because it leaves the sulfur burning fumace/boiler/superheater at its specified feed gas temperature, 700 K. 

Fig. 3.6. Temperature of offgas from burning sulfur with excess air (calculated by means of S, O, N and enthalpy balances). Offgas temperature is decreased by raising input air/input sulfur ratio. This is because (i) excess air in offgas increases with an increasing input air/input sulfur ratio and because (ii) this excess air absorbs sulfur oxidation heat. ( For example, 7 kg of input air for every 1 kg of input sulfur.)...

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