FSC 432
Petroleum Processing

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Self-Check Questions

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Please take a few minutes to complete the exercise and then answer the questions below.

Self-Check Exercise

Explain with chemical equations why the desired oxygen/hydrogen sulfide ratio in the feed to the Burner in the Claus Process should be 1/3 of the stoichiometric oxygen/hydrogen sulfide ratio (for complete combustion of hydrogen sulfide).

Burner reaction:
H2S +(3/2)O2 = H2O +SO2 (1) Combustion

Converter reaction:
2H2S +SO2 = 2H2O +3S (2) Conversion